/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=BIGGEST -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.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 13:06:58,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 13:06:58,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 13:06:58,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 13:06:58,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 13:06:58,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 13:06:58,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 13:06:58,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 13:06:58,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 13:06:58,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 13:06:58,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 13:06:58,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 13:06:58,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 13:06:58,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 13:06:58,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 13:06:58,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 13:06:58,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 13:06:58,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 13:06:58,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 13:06:58,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 13:06:58,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 13:06:58,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 13:06:58,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 13:06:58,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 13:06:58,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 13:06:58,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 13:06:58,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 13:06:58,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 13:06:58,298 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 13:06:58,338 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 13:06:58,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 13:06:58,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 13:06:58,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 13:06:58,341 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 13:06:58,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 13:06:58,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 13:06:58,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 13:06:58,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 13:06:58,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 13:06:58,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 13:06:58,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 13:06:58,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 13:06:58,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 13:06:58,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 13:06:58,344 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 13:06:58,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 13:06:58,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 13:06:58,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 13:06:58,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 13:06:58,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 13:06:58,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 13:06:58,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 13:06:58,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 13:06:58,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 13:06:58,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 13:06:58,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 13:06:58,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 13:06:58,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 13:06:58,347 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=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 13:06:58,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 13:06:58,673 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 13:06:58,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 13:06:58,681 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 13:06:58,682 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 13:06:58,683 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-18 13:06:58,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84a06e555/9ea9768e77ad4dd7b84b6788fa9d9c48/FLAG90a77290b [2020-08-18 13:06:59,281 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 13:06:59,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-18 13:06:59,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84a06e555/9ea9768e77ad4dd7b84b6788fa9d9c48/FLAG90a77290b [2020-08-18 13:06:59,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84a06e555/9ea9768e77ad4dd7b84b6788fa9d9c48 [2020-08-18 13:06:59,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 13:06:59,538 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 13:06:59,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 13:06:59,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 13:06:59,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 13:06:59,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:06:59" (1/1) ... [2020-08-18 13:06:59,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f98ced9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:59, skipping insertion in model container [2020-08-18 13:06:59,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:06:59" (1/1) ... [2020-08-18 13:06:59,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 13:06:59,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 13:07:00,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:07:00,383 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 13:07:00,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:07:00,891 INFO L208 MainTranslator]: Completed translation [2020-08-18 13:07:00,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:07:00 WrapperNode [2020-08-18 13:07:00,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 13:07:00,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 13:07:00,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 13:07:00,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 13:07:00,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:07:00" (1/1) ... [2020-08-18 13:07:00,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:07:00" (1/1) ... [2020-08-18 13:07:00,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:07:00" (1/1) ... [2020-08-18 13:07:00,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:07:00" (1/1) ... [2020-08-18 13:07:01,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:07:00" (1/1) ... [2020-08-18 13:07:01,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:07:00" (1/1) ... [2020-08-18 13:07:01,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:07:00" (1/1) ... [2020-08-18 13:07:01,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 13:07:01,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 13:07:01,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 13:07:01,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 13:07:01,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:07:00" (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 13:07:01,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 13:07:01,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 13:07:01,153 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 13:07:01,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 13:07:01,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 13:07:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 13:07:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-18 13:07:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 13:07:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 13:07:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 13:07:01,156 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 13:07:01,156 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 13:07:01,157 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 13:07:01,157 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-18 13:07:01,157 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-18 13:07:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-18 13:07:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 13:07:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 13:07:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 13:07:01,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 13:07:01,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 13:07:03,060 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 13:07:03,060 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 13:07:03,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:07:03 BoogieIcfgContainer [2020-08-18 13:07:03,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 13:07:03,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 13:07:03,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 13:07:03,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 13:07:03,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 01:06:59" (1/3) ... [2020-08-18 13:07:03,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f85ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:07:03, skipping insertion in model container [2020-08-18 13:07:03,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:07:00" (2/3) ... [2020-08-18 13:07:03,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f85ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:07:03, skipping insertion in model container [2020-08-18 13:07:03,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:07:03" (3/3) ... [2020-08-18 13:07:03,083 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-18 13:07:03,095 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 13:07:03,104 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-18 13:07:03,119 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-18 13:07:03,150 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 13:07:03,150 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 13:07:03,150 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 13:07:03,150 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 13:07:03,151 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 13:07:03,151 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 13:07:03,151 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 13:07:03,151 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 13:07:03,184 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states. [2020-08-18 13:07:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 13:07:03,203 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:07:03,205 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] [2020-08-18 13:07:03,206 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:07:03,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:07:03,214 INFO L82 PathProgramCache]: Analyzing trace with hash 2118038307, now seen corresponding path program 1 times [2020-08-18 13:07:03,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:07:03,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800568161] [2020-08-18 13:07:03,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:07:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,299 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 13:07:04,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:07:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,383 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 13:07:04,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800568161] [2020-08-18 13:07:04,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:07:04,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 13:07:04,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311793847] [2020-08-18 13:07:04,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 13:07:04,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:07:04,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 13:07:04,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 13:07:04,413 INFO L87 Difference]: Start difference. First operand 423 states. Second operand 4 states. [2020-08-18 13:07:04,711 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 13:07:07,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:07:07,504 INFO L93 Difference]: Finished difference Result 779 states and 1361 transitions. [2020-08-18 13:07:07,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 13:07:07,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-08-18 13:07:07,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:07:07,538 INFO L225 Difference]: With dead ends: 779 [2020-08-18 13:07:07,538 INFO L226 Difference]: Without dead ends: 610 [2020-08-18 13:07:07,542 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 13:07:07,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-08-18 13:07:07,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2020-08-18 13:07:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-08-18 13:07:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 893 transitions. [2020-08-18 13:07:07,662 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 893 transitions. Word has length 148 [2020-08-18 13:07:07,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:07:07,667 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 893 transitions. [2020-08-18 13:07:07,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 13:07:07,667 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 893 transitions. [2020-08-18 13:07:07,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 13:07:07,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:07:07,679 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] [2020-08-18 13:07:07,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 13:07:07,683 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:07:07,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:07:07,684 INFO L82 PathProgramCache]: Analyzing trace with hash 482868223, now seen corresponding path program 1 times [2020-08-18 13:07:07,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:07:07,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339600888] [2020-08-18 13:07:07,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:07:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:08,241 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 13:07:08,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:07:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:08,289 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 13:07:08,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339600888] [2020-08-18 13:07:08,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:07:08,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 13:07:08,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627130316] [2020-08-18 13:07:08,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 13:07:08,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:07:08,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 13:07:08,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 13:07:08,294 INFO L87 Difference]: Start difference. First operand 608 states and 893 transitions. Second operand 4 states. [2020-08-18 13:07:08,531 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 13:07:10,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:07:10,641 INFO L93 Difference]: Finished difference Result 1231 states and 1864 transitions. [2020-08-18 13:07:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 13:07:10,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-08-18 13:07:10,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:07:10,648 INFO L225 Difference]: With dead ends: 1231 [2020-08-18 13:07:10,649 INFO L226 Difference]: Without dead ends: 990 [2020-08-18 13:07:10,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 13:07:10,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2020-08-18 13:07:10,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2020-08-18 13:07:10,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-08-18 13:07:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1475 transitions. [2020-08-18 13:07:10,713 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1475 transitions. Word has length 148 [2020-08-18 13:07:10,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:07:10,713 INFO L479 AbstractCegarLoop]: Abstraction has 988 states and 1475 transitions. [2020-08-18 13:07:10,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 13:07:10,714 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1475 transitions. [2020-08-18 13:07:10,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 13:07:10,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:07:10,717 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] [2020-08-18 13:07:10,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 13:07:10,718 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:07:10,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:07:10,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1233925245, now seen corresponding path program 1 times [2020-08-18 13:07:10,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:07:10,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068528112] [2020-08-18 13:07:10,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:07:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:11,216 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 13:07:11,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:07:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:11,286 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 13:07:11,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068528112] [2020-08-18 13:07:11,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:07:11,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 13:07:11,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501269964] [2020-08-18 13:07:11,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 13:07:11,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:07:11,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 13:07:11,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 13:07:11,293 INFO L87 Difference]: Start difference. First operand 988 states and 1475 transitions. Second operand 5 states. [2020-08-18 13:07:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:07:14,292 INFO L93 Difference]: Finished difference Result 2882 states and 4292 transitions. [2020-08-18 13:07:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 13:07:14,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-18 13:07:14,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:07:14,302 INFO L225 Difference]: With dead ends: 2882 [2020-08-18 13:07:14,302 INFO L226 Difference]: Without dead ends: 1907 [2020-08-18 13:07:14,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 13:07:14,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2020-08-18 13:07:14,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1877. [2020-08-18 13:07:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1877 states. [2020-08-18 13:07:14,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2785 transitions. [2020-08-18 13:07:14,392 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2785 transitions. Word has length 148 [2020-08-18 13:07:14,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:07:14,394 INFO L479 AbstractCegarLoop]: Abstraction has 1877 states and 2785 transitions. [2020-08-18 13:07:14,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 13:07:14,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2785 transitions. [2020-08-18 13:07:14,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 13:07:14,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:07:14,400 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] [2020-08-18 13:07:14,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 13:07:14,401 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:07:14,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:07:14,401 INFO L82 PathProgramCache]: Analyzing trace with hash -603333123, now seen corresponding path program 1 times [2020-08-18 13:07:14,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:07:14,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004350784] [2020-08-18 13:07:14,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:07:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:14,772 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 13:07:14,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:07:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:14,814 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 13:07:14,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004350784] [2020-08-18 13:07:14,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:07:14,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 13:07:14,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694542911] [2020-08-18 13:07:14,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 13:07:14,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:07:14,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 13:07:14,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 13:07:14,817 INFO L87 Difference]: Start difference. First operand 1877 states and 2785 transitions. Second operand 4 states. [2020-08-18 13:07:19,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:07:19,033 INFO L93 Difference]: Finished difference Result 5585 states and 8285 transitions. [2020-08-18 13:07:19,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 13:07:19,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-08-18 13:07:19,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:07:19,052 INFO L225 Difference]: With dead ends: 5585 [2020-08-18 13:07:19,052 INFO L226 Difference]: Without dead ends: 3740 [2020-08-18 13:07:19,056 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 13:07:19,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3740 states. [2020-08-18 13:07:19,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 1879. [2020-08-18 13:07:19,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1879 states. [2020-08-18 13:07:19,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 2787 transitions. [2020-08-18 13:07:19,173 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 2787 transitions. Word has length 149 [2020-08-18 13:07:19,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:07:19,173 INFO L479 AbstractCegarLoop]: Abstraction has 1879 states and 2787 transitions. [2020-08-18 13:07:19,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 13:07:19,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 2787 transitions. [2020-08-18 13:07:19,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 13:07:19,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:07:19,177 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] [2020-08-18 13:07:19,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 13:07:19,178 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:07:19,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:07:19,178 INFO L82 PathProgramCache]: Analyzing trace with hash -428194662, now seen corresponding path program 1 times [2020-08-18 13:07:19,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:07:19,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488645946] [2020-08-18 13:07:19,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:07:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:19,533 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 13:07:19,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:07:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:19,612 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 13:07:19,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488645946] [2020-08-18 13:07:19,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:07:19,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 13:07:19,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791096735] [2020-08-18 13:07:19,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 13:07:19,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:07:19,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 13:07:19,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 13:07:19,615 INFO L87 Difference]: Start difference. First operand 1879 states and 2787 transitions. Second operand 4 states. [2020-08-18 13:07:22,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:07:22,789 INFO L93 Difference]: Finished difference Result 4949 states and 7331 transitions. [2020-08-18 13:07:22,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 13:07:22,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-08-18 13:07:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:07:22,806 INFO L225 Difference]: With dead ends: 4949 [2020-08-18 13:07:22,807 INFO L226 Difference]: Without dead ends: 3255 [2020-08-18 13:07:22,811 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 13:07:22,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2020-08-18 13:07:22,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 3225. [2020-08-18 13:07:22,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3225 states. [2020-08-18 13:07:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 4733 transitions. [2020-08-18 13:07:22,997 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 4733 transitions. Word has length 150 [2020-08-18 13:07:22,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:07:22,998 INFO L479 AbstractCegarLoop]: Abstraction has 3225 states and 4733 transitions. [2020-08-18 13:07:22,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 13:07:22,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 4733 transitions. [2020-08-18 13:07:23,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 13:07:23,004 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:07:23,004 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] [2020-08-18 13:07:23,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 13:07:23,005 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:07:23,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:07:23,005 INFO L82 PathProgramCache]: Analyzing trace with hash 908644727, now seen corresponding path program 1 times [2020-08-18 13:07:23,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:07:23,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836146433] [2020-08-18 13:07:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:07:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:23,346 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 13:07:23,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:07:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:23,382 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 13:07:23,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836146433] [2020-08-18 13:07:23,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:07:23,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 13:07:23,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489462688] [2020-08-18 13:07:23,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 13:07:23,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:07:23,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 13:07:23,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 13:07:23,385 INFO L87 Difference]: Start difference. First operand 3225 states and 4733 transitions. Second operand 5 states. [2020-08-18 13:07:25,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:07:25,628 INFO L93 Difference]: Finished difference Result 6686 states and 9749 transitions. [2020-08-18 13:07:25,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 13:07:25,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-18 13:07:25,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:07:25,643 INFO L225 Difference]: With dead ends: 6686 [2020-08-18 13:07:25,644 INFO L226 Difference]: Without dead ends: 3404 [2020-08-18 13:07:25,650 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 13:07:25,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2020-08-18 13:07:25,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 3373. [2020-08-18 13:07:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3373 states. [2020-08-18 13:07:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3373 states to 3373 states and 4896 transitions. [2020-08-18 13:07:25,797 INFO L78 Accepts]: Start accepts. Automaton has 3373 states and 4896 transitions. Word has length 150 [2020-08-18 13:07:25,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:07:25,797 INFO L479 AbstractCegarLoop]: Abstraction has 3373 states and 4896 transitions. [2020-08-18 13:07:25,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 13:07:25,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3373 states and 4896 transitions. [2020-08-18 13:07:25,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 13:07:25,804 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:07:25,804 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] [2020-08-18 13:07:25,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 13:07:25,805 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:07:25,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:07:25,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1901273852, now seen corresponding path program 1 times [2020-08-18 13:07:25,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:07:25,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050448969] [2020-08-18 13:07:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:07:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:26,174 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 13:07:26,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:07:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:26,226 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 13:07:26,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050448969] [2020-08-18 13:07:26,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:07:26,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 13:07:26,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786449412] [2020-08-18 13:07:26,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 13:07:26,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:07:26,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 13:07:26,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 13:07:26,232 INFO L87 Difference]: Start difference. First operand 3373 states and 4896 transitions. Second operand 5 states. [2020-08-18 13:07:29,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:07:29,316 INFO L93 Difference]: Finished difference Result 9783 states and 14126 transitions. [2020-08-18 13:07:29,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 13:07:29,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-18 13:07:29,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:07:29,346 INFO L225 Difference]: With dead ends: 9783 [2020-08-18 13:07:29,346 INFO L226 Difference]: Without dead ends: 6482 [2020-08-18 13:07:29,355 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 13:07:29,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6482 states. [2020-08-18 13:07:29,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6482 to 6451. [2020-08-18 13:07:29,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6451 states. [2020-08-18 13:07:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6451 states to 6451 states and 9243 transitions. [2020-08-18 13:07:29,707 INFO L78 Accepts]: Start accepts. Automaton has 6451 states and 9243 transitions. Word has length 150 [2020-08-18 13:07:29,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:07:29,708 INFO L479 AbstractCegarLoop]: Abstraction has 6451 states and 9243 transitions. [2020-08-18 13:07:29,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 13:07:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 6451 states and 9243 transitions. [2020-08-18 13:07:29,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 13:07:29,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:07:29,718 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 13:07:29,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 13:07:29,718 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:07:29,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:07:29,718 INFO L82 PathProgramCache]: Analyzing trace with hash 183741790, now seen corresponding path program 1 times [2020-08-18 13:07:29,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:07:29,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272300534] [2020-08-18 13:07:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:07:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:29,976 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 13:07:29,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:07:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:30,010 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 13:07:30,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272300534] [2020-08-18 13:07:30,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:07:30,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 13:07:30,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557619235] [2020-08-18 13:07:30,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 13:07:30,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:07:30,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 13:07:30,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 13:07:30,017 INFO L87 Difference]: Start difference. First operand 6451 states and 9243 transitions. Second operand 4 states. [2020-08-18 13:07:32,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:07:32,534 INFO L93 Difference]: Finished difference Result 19159 states and 27425 transitions. [2020-08-18 13:07:32,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 13:07:32,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-08-18 13:07:32,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:07:32,575 INFO L225 Difference]: With dead ends: 19159 [2020-08-18 13:07:32,575 INFO L226 Difference]: Without dead ends: 12824 [2020-08-18 13:07:32,588 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 13:07:32,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12824 states. [2020-08-18 13:07:32,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12824 to 6463. [2020-08-18 13:07:32,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6463 states. [2020-08-18 13:07:32,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6463 states to 6463 states and 9255 transitions. [2020-08-18 13:07:32,920 INFO L78 Accepts]: Start accepts. Automaton has 6463 states and 9255 transitions. Word has length 151 [2020-08-18 13:07:32,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:07:32,920 INFO L479 AbstractCegarLoop]: Abstraction has 6463 states and 9255 transitions. [2020-08-18 13:07:32,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 13:07:32,929 INFO L276 IsEmpty]: Start isEmpty. Operand 6463 states and 9255 transitions. [2020-08-18 13:07:32,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 13:07:32,938 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:07:32,939 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 13:07:32,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 13:07:32,939 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:07:32,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:07:32,940 INFO L82 PathProgramCache]: Analyzing trace with hash -22670587, now seen corresponding path program 1 times [2020-08-18 13:07:32,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:07:32,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024542629] [2020-08-18 13:07:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:07:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:33,304 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 13:07:33,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:07:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:33,359 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 13:07:33,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024542629] [2020-08-18 13:07:33,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:07:33,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 13:07:33,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241100001] [2020-08-18 13:07:33,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 13:07:33,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:07:33,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 13:07:33,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 13:07:33,362 INFO L87 Difference]: Start difference. First operand 6463 states and 9255 transitions. Second operand 5 states. [2020-08-18 13:07:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:07:36,009 INFO L93 Difference]: Finished difference Result 17409 states and 24785 transitions. [2020-08-18 13:07:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 13:07:36,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-18 13:07:36,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:07:36,038 INFO L225 Difference]: With dead ends: 17409 [2020-08-18 13:07:36,038 INFO L226 Difference]: Without dead ends: 11072 [2020-08-18 13:07:36,051 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 13:07:36,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11072 states. [2020-08-18 13:07:36,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11072 to 11041. [2020-08-18 13:07:36,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11041 states. [2020-08-18 13:07:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11041 states to 11041 states and 15539 transitions. [2020-08-18 13:07:36,633 INFO L78 Accepts]: Start accepts. Automaton has 11041 states and 15539 transitions. Word has length 152 [2020-08-18 13:07:36,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:07:36,633 INFO L479 AbstractCegarLoop]: Abstraction has 11041 states and 15539 transitions. [2020-08-18 13:07:36,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 13:07:36,633 INFO L276 IsEmpty]: Start isEmpty. Operand 11041 states and 15539 transitions. [2020-08-18 13:07:36,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 13:07:36,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:07:36,649 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 13:07:36,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 13:07:36,650 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:07:36,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:07:36,650 INFO L82 PathProgramCache]: Analyzing trace with hash 953495673, now seen corresponding path program 1 times [2020-08-18 13:07:36,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:07:36,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753363918] [2020-08-18 13:07:36,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:07:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:36,969 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 13:07:36,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:07:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:37,019 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 13:07:37,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753363918] [2020-08-18 13:07:37,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:07:37,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 13:07:37,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222612859] [2020-08-18 13:07:37,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 13:07:37,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:07:37,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 13:07:37,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 13:07:37,022 INFO L87 Difference]: Start difference. First operand 11041 states and 15539 transitions. Second operand 5 states. [2020-08-18 13:07:40,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:07:40,874 INFO L93 Difference]: Finished difference Result 31193 states and 43903 transitions. [2020-08-18 13:07:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 13:07:40,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-08-18 13:07:40,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:07:40,903 INFO L225 Difference]: With dead ends: 31193 [2020-08-18 13:07:40,904 INFO L226 Difference]: Without dead ends: 20491 [2020-08-18 13:07:40,921 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 13:07:40,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20491 states. [2020-08-18 13:07:41,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20491 to 20468. [2020-08-18 13:07:41,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20468 states. [2020-08-18 13:07:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20468 states to 20468 states and 28516 transitions. [2020-08-18 13:07:41,825 INFO L78 Accepts]: Start accepts. Automaton has 20468 states and 28516 transitions. Word has length 154 [2020-08-18 13:07:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:07:41,825 INFO L479 AbstractCegarLoop]: Abstraction has 20468 states and 28516 transitions. [2020-08-18 13:07:41,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 13:07:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 20468 states and 28516 transitions. [2020-08-18 13:07:41,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 13:07:41,846 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:07:41,846 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 13:07:41,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 13:07:41,846 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:07:41,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:07:41,847 INFO L82 PathProgramCache]: Analyzing trace with hash -734941375, now seen corresponding path program 1 times [2020-08-18 13:07:41,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:07:41,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425173443] [2020-08-18 13:07:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:07:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:42,837 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 13:07:42,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:07:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:42,884 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 13:07:42,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425173443] [2020-08-18 13:07:42,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:07:42,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 13:07:42,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338661205] [2020-08-18 13:07:42,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 13:07:42,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:07:42,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 13:07:42,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 13:07:42,886 INFO L87 Difference]: Start difference. First operand 20468 states and 28516 transitions. Second operand 5 states. [2020-08-18 13:07:46,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:07:46,506 INFO L93 Difference]: Finished difference Result 28775 states and 39937 transitions. [2020-08-18 13:07:46,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 13:07:46,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-08-18 13:07:46,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:07:46,541 INFO L225 Difference]: With dead ends: 28775 [2020-08-18 13:07:46,542 INFO L226 Difference]: Without dead ends: 20504 [2020-08-18 13:07:46,557 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 13:07:46,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20504 states. [2020-08-18 13:07:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20504 to 20181. [2020-08-18 13:07:47,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20181 states. [2020-08-18 13:07:47,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20181 states to 20181 states and 28104 transitions. [2020-08-18 13:07:47,501 INFO L78 Accepts]: Start accepts. Automaton has 20181 states and 28104 transitions. Word has length 154 [2020-08-18 13:07:47,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:07:47,502 INFO L479 AbstractCegarLoop]: Abstraction has 20181 states and 28104 transitions. [2020-08-18 13:07:47,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 13:07:47,502 INFO L276 IsEmpty]: Start isEmpty. Operand 20181 states and 28104 transitions. [2020-08-18 13:07:47,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 13:07:47,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:07:47,515 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 13:07:47,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 13:07:47,515 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:07:47,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:07:47,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1377742214, now seen corresponding path program 1 times [2020-08-18 13:07:47,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:07:47,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145028666] [2020-08-18 13:07:47,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:07:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 13:07:47,574 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 13:07:47,575 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 13:07:47,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 13:07:47,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 01:07:47 BoogieIcfgContainer [2020-08-18 13:07:47,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 13:07:47,631 INFO L168 Benchmark]: Toolchain (without parser) took 48093.35 ms. Allocated memory was 138.4 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 98.7 MB in the beginning and 836.7 MB in the end (delta: -738.0 MB). Peak memory consumption was 283.8 MB. Max. memory is 7.1 GB. [2020-08-18 13:07:47,632 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 13:07:47,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1353.78 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 98.3 MB in the beginning and 160.8 MB in the end (delta: -62.5 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2020-08-18 13:07:47,633 INFO L168 Benchmark]: Boogie Preprocessor took 165.58 ms. Allocated memory is still 202.4 MB. Free memory was 160.8 MB in the beginning and 154.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 7.1 GB. [2020-08-18 13:07:47,634 INFO L168 Benchmark]: RCFGBuilder took 2014.97 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 154.9 MB in the beginning and 95.7 MB in the end (delta: 59.3 MB). Peak memory consumption was 90.2 MB. Max. memory is 7.1 GB. [2020-08-18 13:07:47,634 INFO L168 Benchmark]: TraceAbstraction took 44553.84 ms. Allocated memory was 233.3 MB in the beginning and 1.2 GB in the end (delta: 926.9 MB). Free memory was 94.2 MB in the beginning and 836.7 MB in the end (delta: -742.5 MB). Peak memory consumption was 184.4 MB. Max. memory is 7.1 GB. [2020-08-18 13:07:47,637 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1353.78 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 98.3 MB in the beginning and 160.8 MB in the end (delta: -62.5 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 165.58 ms. Allocated memory is still 202.4 MB. Free memory was 160.8 MB in the beginning and 154.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2014.97 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 154.9 MB in the beginning and 95.7 MB in the end (delta: 59.3 MB). Peak memory consumption was 90.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 44553.84 ms. Allocated memory was 233.3 MB in the beginning and 1.2 GB in the end (delta: 926.9 MB). Free memory was 94.2 MB in the beginning and 836.7 MB in the end (delta: -742.5 MB). Peak memory consumption was 184.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 892]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L15] msg_t nomsg = (msg_t )-1; [L16] port_t p12 = 0; [L17] char p12_old = '\x0'; [L18] char p12_new = '\x0'; [L19] _Bool ep12 = 0; [L20] port_t p13 = 0; [L21] char p13_old = '\x0'; [L22] char p13_new = '\x0'; [L23] _Bool ep13 = 0; [L24] port_t p21 = 0; [L25] char p21_old = '\x0'; [L26] char p21_new = '\x0'; [L27] _Bool ep21 = 0; [L28] port_t p23 = 0; [L29] char p23_old = '\x0'; [L30] char p23_new = '\x0'; [L31] _Bool ep23 = 0; [L32] port_t p31 = 0; [L33] char p31_old = '\x0'; [L34] char p31_new = '\x0'; [L35] _Bool ep31 = 0; [L36] port_t p32 = 0; [L37] char p32_old = '\x0'; [L38] char p32_new = '\x0'; [L39] _Bool ep32 = 0; [L40] char id1 = '\x0'; [L41] unsigned char r1 = '\x0'; [L42] char st1 = '\x0'; [L43] char nl1 = '\x0'; [L44] char m1 = '\x0'; [L45] char max1 = '\x0'; [L46] _Bool mode1 = 0; [L47] _Bool newmax1 = 0; [L48] char id2 = '\x0'; [L49] unsigned char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] _Bool newmax2 = 0; [L56] char id3 = '\x0'; [L57] unsigned char r3 = '\x0'; [L58] char st3 = '\x0'; [L59] char nl3 = '\x0'; [L60] char m3 = '\x0'; [L61] char max3 = '\x0'; [L62] _Bool mode3 = 0; [L63] _Bool newmax3 = 0; [L67] void (*nodes[3])() = { &node1, &node2, &node3 }; [L71] int __return_1873; [L72] int __return_2019; [L73] int __return_2152; [L74] int __return_2288; [L75] int __return_3084; [L76] int __return_3053; [L77] int __return_2989; [L78] int __return_2955; [L79] int __return_2551; [L80] int __return_2840; [L81] int __return_2806; [L82] int __return_2721; [L83] int __return_2426; [L86] int main__c1; [L87] int main__i2; [L88] main__c1 = 0 [L89] ep12 = __VERIFIER_nondet_bool() [L90] ep13 = __VERIFIER_nondet_bool() [L91] ep21 = __VERIFIER_nondet_bool() [L92] ep23 = __VERIFIER_nondet_bool() [L93] ep31 = __VERIFIER_nondet_bool() [L94] ep32 = __VERIFIER_nondet_bool() [L95] id1 = __VERIFIER_nondet_char() [L96] r1 = __VERIFIER_nondet_uchar() [L97] st1 = __VERIFIER_nondet_char() [L98] nl1 = __VERIFIER_nondet_char() [L99] m1 = __VERIFIER_nondet_char() [L100] max1 = __VERIFIER_nondet_char() [L101] mode1 = __VERIFIER_nondet_bool() [L102] newmax1 = __VERIFIER_nondet_bool() [L103] id2 = __VERIFIER_nondet_char() [L104] r2 = __VERIFIER_nondet_uchar() [L105] st2 = __VERIFIER_nondet_char() [L106] nl2 = __VERIFIER_nondet_char() [L107] m2 = __VERIFIER_nondet_char() [L108] max2 = __VERIFIER_nondet_char() [L109] mode2 = __VERIFIER_nondet_bool() [L110] newmax2 = __VERIFIER_nondet_bool() [L111] id3 = __VERIFIER_nondet_char() [L112] r3 = __VERIFIER_nondet_uchar() [L113] st3 = __VERIFIER_nondet_char() [L114] nl3 = __VERIFIER_nondet_char() [L115] m3 = __VERIFIER_nondet_char() [L116] max3 = __VERIFIER_nondet_char() [L117] mode3 = __VERIFIER_nondet_bool() [L118] newmax3 = __VERIFIER_nondet_bool() [L120] _Bool init__r121; [L121] _Bool init__r131; [L122] _Bool init__r211; [L123] _Bool init__r231; [L124] _Bool init__r311; [L125] _Bool init__r321; [L126] _Bool init__r122; [L127] int init__tmp; [L128] _Bool init__r132; [L129] int init__tmp___0; [L130] _Bool init__r212; [L131] int init__tmp___1; [L132] _Bool init__r232; [L133] int init__tmp___2; [L134] _Bool init__r312; [L135] int init__tmp___3; [L136] _Bool init__r322; [L137] int init__tmp___4; [L138] int init__tmp___5; [L139] init__r121 = ep12 [L140] init__r131 = ep13 [L141] init__r211 = ep21 [L142] init__r231 = ep23 [L143] init__r311 = ep31 [L144] init__r321 = ep32 [L145] COND FALSE !(!(init__r121 == 0)) [L3186] COND FALSE !(!(init__r131 == 0)) [L3202] init__tmp = 0 [L149] init__r122 = (_Bool)init__tmp [L150] COND FALSE !(!(init__r131 == 0)) [L3163] COND FALSE !(!(init__r121 == 0)) [L3179] init__tmp___0 = 0 [L154] init__r132 = (_Bool)init__tmp___0 [L155] COND FALSE !(!(init__r211 == 0)) [L3140] COND FALSE !(!(init__r231 == 0)) [L3156] init__tmp___1 = 0 [L159] init__r212 = (_Bool)init__tmp___1 [L160] COND FALSE !(!(init__r231 == 0)) [L3117] COND FALSE !(!(init__r211 == 0)) [L3133] init__tmp___2 = 0 [L164] init__r232 = (_Bool)init__tmp___2 [L165] COND FALSE !(!(init__r311 == 0)) [L3094] COND FALSE !(!(init__r321 == 0)) [L3110] init__tmp___3 = 0 [L169] init__r312 = (_Bool)init__tmp___3 [L170] COND FALSE !(!(init__r321 == 0)) [L3071] COND FALSE !(!(init__r311 == 0)) [L3087] init__tmp___4 = 0 [L174] init__r322 = (_Bool)init__tmp___4 [L175] COND TRUE ((int)id1) != ((int)id2) [L177] COND TRUE ((int)id1) != ((int)id3) [L179] COND TRUE ((int)id2) != ((int)id3) [L181] COND TRUE ((int)id1) >= 0 [L183] COND TRUE ((int)id2) >= 0 [L185] COND TRUE ((int)id3) >= 0 [L187] COND TRUE ((int)r1) == 0 [L189] COND TRUE ((int)r2) == 0 [L191] COND TRUE ((int)r3) == 0 [L193] COND TRUE ((int)max1) == ((int)id1) [L195] COND TRUE ((int)max2) == ((int)id2) [L197] COND TRUE ((int)max3) == ((int)id3) [L199] COND TRUE ((int)st1) == 0 [L201] COND TRUE ((int)st2) == 0 [L203] COND TRUE ((int)st3) == 0 [L205] COND TRUE ((int)nl1) == 0 [L207] COND TRUE ((int)nl2) == 0 [L209] COND TRUE ((int)nl3) == 0 [L211] COND TRUE ((int)mode1) == 0 [L213] COND TRUE ((int)mode2) == 0 [L215] COND TRUE ((int)mode3) == 0 [L217] COND TRUE !(newmax1 == 0) [L219] COND TRUE !(newmax2 == 0) [L221] COND TRUE !(newmax3 == 0) [L223] init__tmp___5 = 1 [L224] __return_1873 = init__tmp___5 [L225] main__i2 = __return_1873 [L226] COND TRUE main__i2 != 0 [L228] p12_old = nomsg [L229] p12_new = nomsg [L230] p13_old = nomsg [L231] p13_new = nomsg [L232] p21_old = nomsg [L233] p21_new = nomsg [L234] p23_old = nomsg [L235] p23_new = nomsg [L236] p31_old = nomsg [L237] p31_new = nomsg [L238] p32_old = nomsg [L239] p32_new = nomsg [L240] main__i2 = 0 [L242] _Bool node1__newmax; [L243] node1__newmax = 0 [L244] COND FALSE !(!(mode1 == 0)) [L250] COND TRUE ((int)r1) < 2 [L252] COND FALSE !(!(ep12 == 0)) [L265] COND FALSE !(!(ep13 == 0)) [L278] mode1 = 1 [L280] _Bool node2__newmax; [L281] node2__newmax = 0 [L282] COND FALSE !(!(mode2 == 0)) [L288] COND TRUE ((int)r2) < 2 [L290] COND FALSE !(!(ep21 == 0)) [L303] COND FALSE !(!(ep23 == 0)) [L316] mode2 = 1 [L318] _Bool node3__newmax; [L319] node3__newmax = 0 [L320] COND FALSE !(!(mode3 == 0)) [L326] COND TRUE ((int)r3) < 2 [L328] COND FALSE !(!(ep31 == 0)) [L341] COND FALSE !(!(ep32 == 0)) [L354] mode3 = 1 [L355] p12_old = p12_new [L356] p12_new = nomsg [L357] p13_old = p13_new [L358] p13_new = nomsg [L359] p21_old = p21_new [L360] p21_new = nomsg [L361] p23_old = p23_new [L362] p23_new = nomsg [L363] p31_old = p31_new [L364] p31_new = nomsg [L365] p32_old = p32_new [L366] p32_new = nomsg [L368] int check__tmp; [L369] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L371] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L373] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L375] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L377] COND FALSE !(((int)r1) >= 2) [L383] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L385] COND TRUE ((int)r1) < 2 [L387] COND FALSE !(((int)r1) >= 2) [L393] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L395] COND TRUE ((int)r1) < 2 [L397] check__tmp = 1 [L398] __return_2019 = check__tmp [L399] main__c1 = __return_2019 [L401] _Bool __tmp_1; [L402] __tmp_1 = main__c1 [L403] _Bool assert__arg; [L404] assert__arg = __tmp_1 [L405] COND FALSE !(assert__arg == 0) [L412] _Bool node1__newmax; [L413] node1__newmax = 0 [L414] COND TRUE !(mode1 == 0) [L416] COND FALSE !(r1 == 255) [L422] r1 = r1 + 1 [L423] COND FALSE !(!(ep21 == 0)) [L432] COND FALSE !(!(ep31 == 0)) [L441] newmax1 = node1__newmax [L442] COND FALSE !(((int)r1) == 2) [L448] mode1 = 0 [L450] _Bool node2__newmax; [L451] node2__newmax = 0 [L452] COND TRUE !(mode2 == 0) [L454] COND FALSE !(r2 == 255) [L460] r2 = r2 + 1 [L461] COND FALSE !(!(ep12 == 0)) [L470] COND FALSE !(!(ep32 == 0)) [L479] newmax2 = node2__newmax [L480] COND FALSE !(((int)r2) == 2) [L486] mode2 = 0 [L488] _Bool node3__newmax; [L489] node3__newmax = 0 [L490] COND TRUE !(mode3 == 0) [L492] COND FALSE !(r3 == 255) [L498] r3 = r3 + 1 [L499] COND FALSE !(!(ep13 == 0)) [L508] COND FALSE !(!(ep23 == 0)) [L517] newmax3 = node3__newmax [L518] COND FALSE !(((int)r3) == 2) [L524] mode3 = 0 [L525] p12_old = p12_new [L526] p12_new = nomsg [L527] p13_old = p13_new [L528] p13_new = nomsg [L529] p21_old = p21_new [L530] p21_new = nomsg [L531] p23_old = p23_new [L532] p23_new = nomsg [L533] p31_old = p31_new [L534] p31_new = nomsg [L535] p32_old = p32_new [L536] p32_new = nomsg [L538] int check__tmp; [L539] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L541] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L543] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L545] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L547] COND FALSE !(((int)r1) >= 2) [L553] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L555] COND TRUE ((int)r1) < 2 [L557] COND FALSE !(((int)r1) >= 2) [L563] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L565] COND TRUE ((int)r1) < 2 [L567] check__tmp = 1 [L568] __return_2152 = check__tmp [L569] main__c1 = __return_2152 [L571] _Bool __tmp_2; [L572] __tmp_2 = main__c1 [L573] _Bool assert__arg; [L574] assert__arg = __tmp_2 [L575] COND FALSE !(assert__arg == 0) [L582] _Bool node1__newmax; [L583] node1__newmax = 0 [L584] COND FALSE !(!(mode1 == 0)) [L590] COND TRUE ((int)r1) < 2 [L592] COND FALSE !(!(ep12 == 0)) [L605] COND FALSE !(!(ep13 == 0)) [L618] mode1 = 1 [L620] _Bool node2__newmax; [L621] node2__newmax = 0 [L622] COND FALSE !(!(mode2 == 0)) [L628] COND TRUE ((int)r2) < 2 [L630] COND FALSE !(!(ep21 == 0)) [L643] COND FALSE !(!(ep23 == 0)) [L656] mode2 = 1 [L658] _Bool node3__newmax; [L659] node3__newmax = 0 [L660] COND FALSE !(!(mode3 == 0)) [L666] COND TRUE ((int)r3) < 2 [L668] COND FALSE !(!(ep31 == 0)) [L681] COND FALSE !(!(ep32 == 0)) [L694] mode3 = 1 [L695] p12_old = p12_new [L696] p12_new = nomsg [L697] p13_old = p13_new [L698] p13_new = nomsg [L699] p21_old = p21_new [L700] p21_new = nomsg [L701] p23_old = p23_new [L702] p23_new = nomsg [L703] p31_old = p31_new [L704] p31_new = nomsg [L705] p32_old = p32_new [L706] p32_new = nomsg [L708] int check__tmp; [L709] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L711] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L713] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L715] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L717] COND FALSE !(((int)r1) >= 2) [L723] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L725] COND TRUE ((int)r1) < 2 [L727] COND FALSE !(((int)r1) >= 2) [L733] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L735] COND TRUE ((int)r1) < 2 [L737] check__tmp = 1 [L738] __return_2288 = check__tmp [L739] main__c1 = __return_2288 [L741] _Bool __tmp_3; [L742] __tmp_3 = main__c1 [L743] _Bool assert__arg; [L744] assert__arg = __tmp_3 [L745] COND FALSE !(assert__arg == 0) [L752] _Bool node1__newmax; [L753] node1__newmax = 0 [L754] COND TRUE !(mode1 == 0) [L756] COND FALSE !(r1 == 255) [L762] r1 = r1 + 1 [L763] COND FALSE !(!(ep21 == 0)) [L772] COND FALSE !(!(ep31 == 0)) [L781] newmax1 = node1__newmax [L782] COND TRUE ((int)r1) == 2 [L784] COND TRUE ((int)max1) == ((int)id1) [L786] st1 = 1 [L787] mode1 = 0 [L789] _Bool node2__newmax; [L790] node2__newmax = 0 [L791] COND TRUE !(mode2 == 0) [L793] COND FALSE !(r2 == 255) [L799] r2 = r2 + 1 [L800] COND FALSE !(!(ep12 == 0)) [L809] COND FALSE !(!(ep32 == 0)) [L818] newmax2 = node2__newmax [L819] COND TRUE ((int)r2) == 2 [L821] COND TRUE ((int)max2) == ((int)id2) [L823] st2 = 1 [L824] mode2 = 0 [L826] _Bool node3__newmax; [L827] node3__newmax = 0 [L828] COND TRUE !(mode3 == 0) [L830] COND FALSE !(r3 == 255) [L836] r3 = r3 + 1 [L837] COND FALSE !(!(ep13 == 0)) [L846] COND FALSE !(!(ep23 == 0)) [L855] newmax3 = node3__newmax [L856] COND TRUE ((int)r3) == 2 [L858] COND TRUE ((int)max3) == ((int)id3) [L860] st3 = 1 [L861] mode3 = 0 [L862] p12_old = p12_new [L863] p12_new = nomsg [L864] p13_old = p13_new [L865] p13_new = nomsg [L866] p21_old = p21_new [L867] p21_new = nomsg [L868] p23_old = p23_new [L869] p23_new = nomsg [L870] p31_old = p31_new [L871] p31_new = nomsg [L872] p32_old = p32_new [L873] p32_new = nomsg [L875] int check__tmp; [L876] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L882] check__tmp = 0 [L883] __return_3084 = check__tmp [L884] main__c1 = __return_3084 [L886] _Bool __tmp_4; [L887] __tmp_4 = main__c1 [L888] _Bool assert__arg; [L889] assert__arg = __tmp_4 [L890] COND TRUE assert__arg == 0 [L892] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 427 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 44.4s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 34.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10125 SDtfs, 10471 SDslu, 5974 SDs, 0 SdLazy, 10715 SolverSat, 118 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20468occurred 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: 3.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 8725 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 1808 NumberOfCodeBlocks, 1808 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1643 ConstructedInterpolants, 0 QuantifiedInterpolants, 955712 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...