/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:54:04,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:54:04,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:54:04,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:54:04,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:54:04,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:54:04,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:54:04,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:54:04,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:54:04,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:54:04,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:54:04,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:54:04,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:54:04,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:54:04,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:54:04,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:54:04,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:54:04,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:54:04,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:54:04,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:54:04,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:54:04,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:54:04,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:54:04,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:54:04,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 15:54:04,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:54:04,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:54:04,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:54:04,347 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 [2020-08-21 15:54:04,390 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:54:04,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:54:04,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:54:04,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:54:04,393 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:54:04,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:54:04,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:54:04,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:54:04,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:54:04,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:54:04,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:54:04,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:54:04,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:54:04,395 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:54:04,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:54:04,396 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:54:04,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:54:04,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:54:04,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:54:04,397 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:54:04,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:54:04,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:54:04,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:54:04,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:54:04,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:54:04,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:54:04,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:54:04,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:54:04,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:54:04,399 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=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:54:04,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:54:04,732 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:54:04,735 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:54:04,737 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:54:04,737 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:54:04,738 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-21 15:54:04,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71d4f666c/d3e7ed907ec34d9eba78ba83750316b6/FLAG556f741f3 [2020-08-21 15:54:05,371 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:54:05,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-21 15:54:05,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71d4f666c/d3e7ed907ec34d9eba78ba83750316b6/FLAG556f741f3 [2020-08-21 15:54:05,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71d4f666c/d3e7ed907ec34d9eba78ba83750316b6 [2020-08-21 15:54:05,648 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:54:05,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:54:05,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:54:05,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:54:05,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:54:05,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:54:05" (1/1) ... [2020-08-21 15:54:05,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8831ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:54:05, skipping insertion in model container [2020-08-21 15:54:05,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:54:05" (1/1) ... [2020-08-21 15:54:05,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:54:05,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:54:06,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:54:06,384 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:54:06,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:54:06,662 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:54:06,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:54:06 WrapperNode [2020-08-21 15:54:06,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:54:06,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:54:06,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:54:06,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:54:06,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:54:06" (1/1) ... [2020-08-21 15:54:06,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:54:06" (1/1) ... [2020-08-21 15:54:06,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:54:06" (1/1) ... [2020-08-21 15:54:06,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:54:06" (1/1) ... [2020-08-21 15:54:06,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:54:06" (1/1) ... [2020-08-21 15:54:06,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:54:06" (1/1) ... [2020-08-21 15:54:06,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:54:06" (1/1) ... [2020-08-21 15:54:06,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:54:06,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:54:06,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:54:06,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:54:06,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:54:06" (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 [2020-08-21 15:54:06,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:54:06,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:54:06,920 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 15:54:06,920 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:54:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:54:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 15:54:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-21 15:54:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-21 15:54:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-21 15:54:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 15:54:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 15:54:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-21 15:54:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-21 15:54:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-21 15:54:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-21 15:54:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-21 15:54:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-21 15:54:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-21 15:54:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:54:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:54:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:54:08,608 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:54:08,608 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 15:54:08,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:54:08 BoogieIcfgContainer [2020-08-21 15:54:08,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:54:08,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:54:08,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:54:08,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:54:08,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:54:05" (1/3) ... [2020-08-21 15:54:08,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c32b7c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:54:08, skipping insertion in model container [2020-08-21 15:54:08,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:54:06" (2/3) ... [2020-08-21 15:54:08,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c32b7c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:54:08, skipping insertion in model container [2020-08-21 15:54:08,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:54:08" (3/3) ... [2020-08-21 15:54:08,626 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-21 15:54:08,637 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:54:08,645 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-21 15:54:08,659 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-21 15:54:08,685 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:54:08,685 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:54:08,685 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:54:08,686 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:54:08,686 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:54:08,686 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:54:08,686 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:54:08,686 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:54:08,746 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states. [2020-08-21 15:54:08,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-21 15:54:08,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:54:08,771 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] [2020-08-21 15:54:08,771 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:54:08,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:54:08,777 INFO L82 PathProgramCache]: Analyzing trace with hash 2118038307, now seen corresponding path program 1 times [2020-08-21 15:54:08,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:54:08,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379703767] [2020-08-21 15:54:08,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:54:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:09,766 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 15:54:09,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:54:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:54:09,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379703767] [2020-08-21 15:54:09,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:54:09,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:54:09,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970638091] [2020-08-21 15:54:09,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:54:09,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:54:09,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:54:09,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:54:09,961 INFO L87 Difference]: Start difference. First operand 423 states. Second operand 4 states. [2020-08-21 15:54:10,315 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 15:54:13,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:54:13,452 INFO L93 Difference]: Finished difference Result 779 states and 1361 transitions. [2020-08-21 15:54:13,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:54:13,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-08-21 15:54:13,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:54:13,476 INFO L225 Difference]: With dead ends: 779 [2020-08-21 15:54:13,476 INFO L226 Difference]: Without dead ends: 610 [2020-08-21 15:54:13,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:54:13,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-08-21 15:54:13,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2020-08-21 15:54:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-08-21 15:54:13,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 893 transitions. [2020-08-21 15:54:13,578 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 893 transitions. Word has length 148 [2020-08-21 15:54:13,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:54:13,580 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 893 transitions. [2020-08-21 15:54:13,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:54:13,580 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 893 transitions. [2020-08-21 15:54:13,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-21 15:54:13,585 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:54:13,585 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] [2020-08-21 15:54:13,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:54:13,586 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:54:13,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:54:13,587 INFO L82 PathProgramCache]: Analyzing trace with hash 482868223, now seen corresponding path program 1 times [2020-08-21 15:54:13,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:54:13,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961477422] [2020-08-21 15:54:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:54:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:14,190 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 15:54:14,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:54:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:14,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:54:14,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961477422] [2020-08-21 15:54:14,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:54:14,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:54:14,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673273814] [2020-08-21 15:54:14,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:54:14,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:54:14,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:54:14,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:54:14,249 INFO L87 Difference]: Start difference. First operand 608 states and 893 transitions. Second operand 4 states. [2020-08-21 15:54:14,596 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 15:54:16,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:54:16,935 INFO L93 Difference]: Finished difference Result 1231 states and 1864 transitions. [2020-08-21 15:54:16,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:54:16,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-08-21 15:54:16,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:54:16,943 INFO L225 Difference]: With dead ends: 1231 [2020-08-21 15:54:16,943 INFO L226 Difference]: Without dead ends: 990 [2020-08-21 15:54:16,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:54:16,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2020-08-21 15:54:17,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2020-08-21 15:54:17,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-08-21 15:54:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1475 transitions. [2020-08-21 15:54:17,025 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1475 transitions. Word has length 148 [2020-08-21 15:54:17,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:54:17,027 INFO L479 AbstractCegarLoop]: Abstraction has 988 states and 1475 transitions. [2020-08-21 15:54:17,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:54:17,028 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1475 transitions. [2020-08-21 15:54:17,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-21 15:54:17,032 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:54:17,036 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] [2020-08-21 15:54:17,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:54:17,037 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:54:17,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:54:17,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1233925245, now seen corresponding path program 1 times [2020-08-21 15:54:17,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:54:17,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20111287] [2020-08-21 15:54:17,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:54:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:17,621 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 15:54:17,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:54:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:54:17,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20111287] [2020-08-21 15:54:17,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:54:17,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:54:17,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817252768] [2020-08-21 15:54:17,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:54:17,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:54:17,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:54:17,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:54:17,686 INFO L87 Difference]: Start difference. First operand 988 states and 1475 transitions. Second operand 5 states. [2020-08-21 15:54:20,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:54:20,842 INFO L93 Difference]: Finished difference Result 2882 states and 4292 transitions. [2020-08-21 15:54:20,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:54:20,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-21 15:54:20,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:54:20,853 INFO L225 Difference]: With dead ends: 2882 [2020-08-21 15:54:20,854 INFO L226 Difference]: Without dead ends: 1907 [2020-08-21 15:54:20,858 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 [2020-08-21 15:54:20,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2020-08-21 15:54:20,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1877. [2020-08-21 15:54:20,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1877 states. [2020-08-21 15:54:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2785 transitions. [2020-08-21 15:54:20,949 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2785 transitions. Word has length 148 [2020-08-21 15:54:20,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:54:20,950 INFO L479 AbstractCegarLoop]: Abstraction has 1877 states and 2785 transitions. [2020-08-21 15:54:20,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:54:20,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2785 transitions. [2020-08-21 15:54:20,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-21 15:54:20,956 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:54:20,956 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] [2020-08-21 15:54:20,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:54:20,957 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:54:20,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:54:20,958 INFO L82 PathProgramCache]: Analyzing trace with hash -603333123, now seen corresponding path program 1 times [2020-08-21 15:54:20,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:54:20,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109555749] [2020-08-21 15:54:20,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:54:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:21,490 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 15:54:21,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:54:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:54:21,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109555749] [2020-08-21 15:54:21,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:54:21,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:54:21,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793704528] [2020-08-21 15:54:21,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:54:21,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:54:21,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:54:21,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:54:21,555 INFO L87 Difference]: Start difference. First operand 1877 states and 2785 transitions. Second operand 4 states. [2020-08-21 15:54:25,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:54:25,533 INFO L93 Difference]: Finished difference Result 5585 states and 8285 transitions. [2020-08-21 15:54:25,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 15:54:25,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-08-21 15:54:25,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:54:25,552 INFO L225 Difference]: With dead ends: 5585 [2020-08-21 15:54:25,552 INFO L226 Difference]: Without dead ends: 3740 [2020-08-21 15:54:25,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:54:25,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3740 states. [2020-08-21 15:54:25,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 1879. [2020-08-21 15:54:25,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1879 states. [2020-08-21 15:54:25,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 2787 transitions. [2020-08-21 15:54:25,663 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 2787 transitions. Word has length 149 [2020-08-21 15:54:25,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:54:25,664 INFO L479 AbstractCegarLoop]: Abstraction has 1879 states and 2787 transitions. [2020-08-21 15:54:25,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:54:25,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 2787 transitions. [2020-08-21 15:54:25,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 15:54:25,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:54:25,668 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] [2020-08-21 15:54:25,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:54:25,669 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:54:25,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:54:25,669 INFO L82 PathProgramCache]: Analyzing trace with hash -428194662, now seen corresponding path program 1 times [2020-08-21 15:54:25,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:54:25,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776497080] [2020-08-21 15:54:25,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:54:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:26,076 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 15:54:26,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:54:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:54:26,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776497080] [2020-08-21 15:54:26,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:54:26,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:54:26,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257439816] [2020-08-21 15:54:26,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:54:26,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:54:26,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:54:26,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:54:26,129 INFO L87 Difference]: Start difference. First operand 1879 states and 2787 transitions. Second operand 4 states. [2020-08-21 15:54:29,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:54:29,471 INFO L93 Difference]: Finished difference Result 4949 states and 7331 transitions. [2020-08-21 15:54:29,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 15:54:29,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-08-21 15:54:29,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:54:29,487 INFO L225 Difference]: With dead ends: 4949 [2020-08-21 15:54:29,487 INFO L226 Difference]: Without dead ends: 3255 [2020-08-21 15:54:29,491 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 [2020-08-21 15:54:29,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2020-08-21 15:54:29,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 3225. [2020-08-21 15:54:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3225 states. [2020-08-21 15:54:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 4733 transitions. [2020-08-21 15:54:29,630 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 4733 transitions. Word has length 150 [2020-08-21 15:54:29,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:54:29,630 INFO L479 AbstractCegarLoop]: Abstraction has 3225 states and 4733 transitions. [2020-08-21 15:54:29,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:54:29,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 4733 transitions. [2020-08-21 15:54:29,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 15:54:29,636 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:54:29,636 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] [2020-08-21 15:54:29,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:54:29,637 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:54:29,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:54:29,642 INFO L82 PathProgramCache]: Analyzing trace with hash 908644727, now seen corresponding path program 1 times [2020-08-21 15:54:29,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:54:29,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676370511] [2020-08-21 15:54:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:54:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:30,067 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 15:54:30,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:54:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:54:30,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676370511] [2020-08-21 15:54:30,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:54:30,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:54:30,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792855721] [2020-08-21 15:54:30,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:54:30,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:54:30,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:54:30,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:54:30,172 INFO L87 Difference]: Start difference. First operand 3225 states and 4733 transitions. Second operand 5 states. [2020-08-21 15:54:32,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:54:32,475 INFO L93 Difference]: Finished difference Result 6686 states and 9749 transitions. [2020-08-21 15:54:32,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:54:32,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-21 15:54:32,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:54:32,496 INFO L225 Difference]: With dead ends: 6686 [2020-08-21 15:54:32,496 INFO L226 Difference]: Without dead ends: 3404 [2020-08-21 15:54:32,504 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 [2020-08-21 15:54:32,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2020-08-21 15:54:32,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 3373. [2020-08-21 15:54:32,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3373 states. [2020-08-21 15:54:32,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3373 states to 3373 states and 4896 transitions. [2020-08-21 15:54:32,689 INFO L78 Accepts]: Start accepts. Automaton has 3373 states and 4896 transitions. Word has length 150 [2020-08-21 15:54:32,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:54:32,689 INFO L479 AbstractCegarLoop]: Abstraction has 3373 states and 4896 transitions. [2020-08-21 15:54:32,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:54:32,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3373 states and 4896 transitions. [2020-08-21 15:54:32,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 15:54:32,698 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:54:32,698 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] [2020-08-21 15:54:32,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:54:32,701 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:54:32,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:54:32,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1901273852, now seen corresponding path program 1 times [2020-08-21 15:54:32,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:54:32,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509692502] [2020-08-21 15:54:32,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:54:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:33,101 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 15:54:33,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:54:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:54:33,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509692502] [2020-08-21 15:54:33,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:54:33,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:54:33,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783557133] [2020-08-21 15:54:33,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:54:33,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:54:33,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:54:33,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:54:33,152 INFO L87 Difference]: Start difference. First operand 3373 states and 4896 transitions. Second operand 5 states. [2020-08-21 15:54:36,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:54:36,459 INFO L93 Difference]: Finished difference Result 9783 states and 14126 transitions. [2020-08-21 15:54:36,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:54:36,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-21 15:54:36,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:54:36,480 INFO L225 Difference]: With dead ends: 9783 [2020-08-21 15:54:36,480 INFO L226 Difference]: Without dead ends: 6482 [2020-08-21 15:54:36,487 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 [2020-08-21 15:54:36,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6482 states. [2020-08-21 15:54:36,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6482 to 6451. [2020-08-21 15:54:36,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6451 states. [2020-08-21 15:54:36,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6451 states to 6451 states and 9243 transitions. [2020-08-21 15:54:36,745 INFO L78 Accepts]: Start accepts. Automaton has 6451 states and 9243 transitions. Word has length 150 [2020-08-21 15:54:36,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:54:36,745 INFO L479 AbstractCegarLoop]: Abstraction has 6451 states and 9243 transitions. [2020-08-21 15:54:36,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:54:36,746 INFO L276 IsEmpty]: Start isEmpty. Operand 6451 states and 9243 transitions. [2020-08-21 15:54:36,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 15:54:36,755 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:54:36,755 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] [2020-08-21 15:54:36,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:54:36,755 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:54:36,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:54:36,756 INFO L82 PathProgramCache]: Analyzing trace with hash 183741790, now seen corresponding path program 1 times [2020-08-21 15:54:36,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:54:36,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724755196] [2020-08-21 15:54:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:54:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:37,224 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 15:54:37,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:54:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:54:37,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724755196] [2020-08-21 15:54:37,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:54:37,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:54:37,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001493578] [2020-08-21 15:54:37,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:54:37,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:54:37,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:54:37,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:54:37,293 INFO L87 Difference]: Start difference. First operand 6451 states and 9243 transitions. Second operand 4 states. [2020-08-21 15:54:40,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:54:40,388 INFO L93 Difference]: Finished difference Result 19159 states and 27425 transitions. [2020-08-21 15:54:40,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 15:54:40,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-08-21 15:54:40,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:54:40,428 INFO L225 Difference]: With dead ends: 19159 [2020-08-21 15:54:40,428 INFO L226 Difference]: Without dead ends: 12824 [2020-08-21 15:54:40,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:54:40,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12824 states. [2020-08-21 15:54:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12824 to 6463. [2020-08-21 15:54:40,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6463 states. [2020-08-21 15:54:40,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6463 states to 6463 states and 9255 transitions. [2020-08-21 15:54:40,717 INFO L78 Accepts]: Start accepts. Automaton has 6463 states and 9255 transitions. Word has length 151 [2020-08-21 15:54:40,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:54:40,717 INFO L479 AbstractCegarLoop]: Abstraction has 6463 states and 9255 transitions. [2020-08-21 15:54:40,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:54:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 6463 states and 9255 transitions. [2020-08-21 15:54:40,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 15:54:40,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:54:40,727 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] [2020-08-21 15:54:40,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:54:40,728 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:54:40,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:54:40,728 INFO L82 PathProgramCache]: Analyzing trace with hash -22670587, now seen corresponding path program 1 times [2020-08-21 15:54:40,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:54:40,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350737532] [2020-08-21 15:54:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:54:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:41,088 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 15:54:41,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:54:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:41,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:54:41,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350737532] [2020-08-21 15:54:41,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:54:41,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:54:41,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217954452] [2020-08-21 15:54:41,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:54:41,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:54:41,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:54:41,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:54:41,148 INFO L87 Difference]: Start difference. First operand 6463 states and 9255 transitions. Second operand 5 states. [2020-08-21 15:54:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:54:43,905 INFO L93 Difference]: Finished difference Result 17409 states and 24785 transitions. [2020-08-21 15:54:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:54:43,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-21 15:54:43,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:54:43,929 INFO L225 Difference]: With dead ends: 17409 [2020-08-21 15:54:43,930 INFO L226 Difference]: Without dead ends: 11072 [2020-08-21 15:54:43,942 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 [2020-08-21 15:54:43,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11072 states. [2020-08-21 15:54:44,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11072 to 11041. [2020-08-21 15:54:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11041 states. [2020-08-21 15:54:44,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11041 states to 11041 states and 15539 transitions. [2020-08-21 15:54:44,407 INFO L78 Accepts]: Start accepts. Automaton has 11041 states and 15539 transitions. Word has length 152 [2020-08-21 15:54:44,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:54:44,408 INFO L479 AbstractCegarLoop]: Abstraction has 11041 states and 15539 transitions. [2020-08-21 15:54:44,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:54:44,408 INFO L276 IsEmpty]: Start isEmpty. Operand 11041 states and 15539 transitions. [2020-08-21 15:54:44,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 15:54:44,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:54:44,420 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] [2020-08-21 15:54:44,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:54:44,421 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:54:44,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:54:44,421 INFO L82 PathProgramCache]: Analyzing trace with hash 953495673, now seen corresponding path program 1 times [2020-08-21 15:54:44,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:54:44,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178964573] [2020-08-21 15:54:44,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:54:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:44,786 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 15:54:44,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:54:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:54:44,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178964573] [2020-08-21 15:54:44,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:54:44,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:54:44,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126816826] [2020-08-21 15:54:44,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:54:44,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:54:44,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:54:44,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:54:44,834 INFO L87 Difference]: Start difference. First operand 11041 states and 15539 transitions. Second operand 5 states. [2020-08-21 15:54:48,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:54:48,931 INFO L93 Difference]: Finished difference Result 31193 states and 43903 transitions. [2020-08-21 15:54:48,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:54:48,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-08-21 15:54:48,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:54:48,973 INFO L225 Difference]: With dead ends: 31193 [2020-08-21 15:54:48,974 INFO L226 Difference]: Without dead ends: 20491 [2020-08-21 15:54:48,993 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 [2020-08-21 15:54:49,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20491 states. [2020-08-21 15:54:50,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20491 to 20468. [2020-08-21 15:54:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20468 states. [2020-08-21 15:54:50,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20468 states to 20468 states and 28516 transitions. [2020-08-21 15:54:50,539 INFO L78 Accepts]: Start accepts. Automaton has 20468 states and 28516 transitions. Word has length 154 [2020-08-21 15:54:50,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:54:50,540 INFO L479 AbstractCegarLoop]: Abstraction has 20468 states and 28516 transitions. [2020-08-21 15:54:50,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:54:50,540 INFO L276 IsEmpty]: Start isEmpty. Operand 20468 states and 28516 transitions. [2020-08-21 15:54:50,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 15:54:50,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:54:50,558 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] [2020-08-21 15:54:50,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:54:50,559 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:54:50,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:54:50,559 INFO L82 PathProgramCache]: Analyzing trace with hash -734941375, now seen corresponding path program 1 times [2020-08-21 15:54:50,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:54:50,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544786615] [2020-08-21 15:54:50,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:54:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:50,913 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 15:54:50,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:54:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:54:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:54:50,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544786615] [2020-08-21 15:54:50,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:54:50,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:54:50,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799248514] [2020-08-21 15:54:50,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:54:50,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:54:50,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:54:50,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:54:50,951 INFO L87 Difference]: Start difference. First operand 20468 states and 28516 transitions. Second operand 5 states. [2020-08-21 15:54:54,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:54:54,711 INFO L93 Difference]: Finished difference Result 28775 states and 39937 transitions. [2020-08-21 15:54:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:54:54,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-08-21 15:54:54,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:54:54,742 INFO L225 Difference]: With dead ends: 28775 [2020-08-21 15:54:54,742 INFO L226 Difference]: Without dead ends: 20504 [2020-08-21 15:54:54,758 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 [2020-08-21 15:54:54,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20504 states. [2020-08-21 15:54:55,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20504 to 20181. [2020-08-21 15:54:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20181 states. [2020-08-21 15:54:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20181 states to 20181 states and 28104 transitions. [2020-08-21 15:54:55,669 INFO L78 Accepts]: Start accepts. Automaton has 20181 states and 28104 transitions. Word has length 154 [2020-08-21 15:54:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:54:55,669 INFO L479 AbstractCegarLoop]: Abstraction has 20181 states and 28104 transitions. [2020-08-21 15:54:55,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:54:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 20181 states and 28104 transitions. [2020-08-21 15:54:55,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 15:54:55,688 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:54:55,688 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] [2020-08-21 15:54:55,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:54:55,689 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:54:55,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:54:55,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1377742214, now seen corresponding path program 1 times [2020-08-21 15:54:55,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:54:55,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331142296] [2020-08-21 15:54:55,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:54:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:54:55,753 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:54:55,754 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:54:55,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 15:54:55,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:54:55 BoogieIcfgContainer [2020-08-21 15:54:55,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:54:55,811 INFO L168 Benchmark]: Toolchain (without parser) took 50161.28 ms. Allocated memory was 141.0 MB in the beginning and 1.1 GB in the end (delta: 971.0 MB). Free memory was 102.7 MB in the beginning and 426.9 MB in the end (delta: -324.2 MB). Peak memory consumption was 646.8 MB. Max. memory is 7.1 GB. [2020-08-21 15:54:55,812 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 15:54:55,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1010.89 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 163.9 MB in the end (delta: -61.4 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2020-08-21 15:54:55,813 INFO L168 Benchmark]: Boogie Preprocessor took 172.61 ms. Allocated memory is still 205.0 MB. Free memory was 163.9 MB in the beginning and 159.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-08-21 15:54:55,814 INFO L168 Benchmark]: RCFGBuilder took 1780.17 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 159.0 MB in the beginning and 92.6 MB in the end (delta: 66.4 MB). Peak memory consumption was 98.4 MB. Max. memory is 7.1 GB. [2020-08-21 15:54:55,815 INFO L168 Benchmark]: TraceAbstraction took 47191.09 ms. Allocated memory was 237.0 MB in the beginning and 1.1 GB in the end (delta: 875.0 MB). Free memory was 91.1 MB in the beginning and 426.9 MB in the end (delta: -335.8 MB). Peak memory consumption was 539.3 MB. Max. memory is 7.1 GB. [2020-08-21 15:54:55,818 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1010.89 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 163.9 MB in the end (delta: -61.4 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 172.61 ms. Allocated memory is still 205.0 MB. Free memory was 163.9 MB in the beginning and 159.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1780.17 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 159.0 MB in the beginning and 92.6 MB in the end (delta: 66.4 MB). Peak memory consumption was 98.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 47191.09 ms. Allocated memory was 237.0 MB in the beginning and 1.1 GB in the end (delta: 875.0 MB). Free memory was 91.1 MB in the beginning and 426.9 MB in the end (delta: -335.8 MB). Peak memory consumption was 539.3 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: 47.0s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 36.3s, 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, 26.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s 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: 4.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 8725 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 4.5s 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...