/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:41:24,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:41:24,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:41:24,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:41:24,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:41:24,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:41:24,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:41:24,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:41:24,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:41:24,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:41:24,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:41:24,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:41:24,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:41:24,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:41:24,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:41:24,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:41:24,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:41:24,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:41:24,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:41:24,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:41:24,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:41:24,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:41:24,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:41:24,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:41:24,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 23:41:24,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:41:24,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:41:24,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:41:24,887 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 23:41:24,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:41:24,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:41:24,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:41:24,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:41:24,932 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:41:24,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:41:24,933 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:41:24,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:41:24,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:41:24,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:41:24,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:41:24,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:41:24,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:41:24,935 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:41:24,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:41:24,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:41:24,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:41:24,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:41:24,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:41:24,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:41:24,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:41:24,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:41:24,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:41:24,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:41:24,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:41:24,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:41:24,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:41:24,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:41:24,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:41:24,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:41:25,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:41:25,224 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:41:25,228 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:41:25,229 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:41:25,229 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:41:25,230 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-18 23:41:25,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24a2beb6b/61bb3669d9dc4dfd8529ed2d8c77c342/FLAGcac49977a [2020-08-18 23:41:25,882 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:41:25,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-18 23:41:25,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24a2beb6b/61bb3669d9dc4dfd8529ed2d8c77c342/FLAGcac49977a [2020-08-18 23:41:26,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24a2beb6b/61bb3669d9dc4dfd8529ed2d8c77c342 [2020-08-18 23:41:26,134 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:41:26,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:41:26,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:41:26,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:41:26,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:41:26,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:41:26" (1/1) ... [2020-08-18 23:41:26,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@546c585d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:26, skipping insertion in model container [2020-08-18 23:41:26,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:41:26" (1/1) ... [2020-08-18 23:41:26,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:41:26,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:41:26,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:41:26,758 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:41:26,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:41:26,926 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:41:26,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:26 WrapperNode [2020-08-18 23:41:26,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:41:26,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:41:26,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:41:26,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:41:26,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:26" (1/1) ... [2020-08-18 23:41:26,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:26" (1/1) ... [2020-08-18 23:41:26,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:26" (1/1) ... [2020-08-18 23:41:26,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:26" (1/1) ... [2020-08-18 23:41:26,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:26" (1/1) ... [2020-08-18 23:41:27,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:26" (1/1) ... [2020-08-18 23:41:27,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:26" (1/1) ... [2020-08-18 23:41:27,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:41:27,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:41:27,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:41:27,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:41:27,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:41:27,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:41:27,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:41:27,147 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 23:41:27,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:41:27,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:41:27,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 23:41:27,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 23:41:27,149 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 23:41:27,149 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 23:41:27,150 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 23:41:27,150 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 23:41:27,150 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 23:41:27,151 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-18 23:41:27,151 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-18 23:41:27,151 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-18 23:41:27,152 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 23:41:27,152 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 23:41:27,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:41:27,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:41:27,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:41:28,267 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:41:28,267 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 23:41:28,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:41:28 BoogieIcfgContainer [2020-08-18 23:41:28,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:41:28,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:41:28,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:41:28,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:41:28,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:41:26" (1/3) ... [2020-08-18 23:41:28,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60dc9d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:41:28, skipping insertion in model container [2020-08-18 23:41:28,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:26" (2/3) ... [2020-08-18 23:41:28,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60dc9d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:41:28, skipping insertion in model container [2020-08-18 23:41:28,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:41:28" (3/3) ... [2020-08-18 23:41:28,281 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-18 23:41:28,291 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:41:28,299 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:41:28,313 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:41:28,338 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:41:28,339 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:41:28,339 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:41:28,339 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:41:28,339 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:41:28,340 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:41:28,340 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:41:28,340 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:41:28,365 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-08-18 23:41:28,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-18 23:41:28,380 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:28,381 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] [2020-08-18 23:41:28,382 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:28,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:28,388 INFO L82 PathProgramCache]: Analyzing trace with hash -483172071, now seen corresponding path program 1 times [2020-08-18 23:41:28,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:28,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309088933] [2020-08-18 23:41:28,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:29,344 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-18 23:41:29,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:29,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309088933] [2020-08-18 23:41:29,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:29,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:41:29,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999556909] [2020-08-18 23:41:29,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:41:29,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:29,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:41:29,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:41:29,464 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 4 states. [2020-08-18 23:41:29,754 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-08-18 23:41:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:31,357 INFO L93 Difference]: Finished difference Result 599 states and 1046 transitions. [2020-08-18 23:41:31,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:41:31,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-08-18 23:41:31,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:31,380 INFO L225 Difference]: With dead ends: 599 [2020-08-18 23:41:31,380 INFO L226 Difference]: Without dead ends: 487 [2020-08-18 23:41:31,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:41:31,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2020-08-18 23:41:31,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 485. [2020-08-18 23:41:31,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-08-18 23:41:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 724 transitions. [2020-08-18 23:41:31,473 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 724 transitions. Word has length 142 [2020-08-18 23:41:31,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:31,474 INFO L479 AbstractCegarLoop]: Abstraction has 485 states and 724 transitions. [2020-08-18 23:41:31,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:41:31,474 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 724 transitions. [2020-08-18 23:41:31,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-18 23:41:31,482 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:31,482 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] [2020-08-18 23:41:31,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:41:31,483 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:31,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:31,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1126069355, now seen corresponding path program 1 times [2020-08-18 23:41:31,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:31,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263661564] [2020-08-18 23:41:31,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:31,938 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-18 23:41:31,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:32,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263661564] [2020-08-18 23:41:32,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:32,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:41:32,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139156111] [2020-08-18 23:41:32,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:41:32,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:32,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:41:32,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:41:32,079 INFO L87 Difference]: Start difference. First operand 485 states and 724 transitions. Second operand 4 states. [2020-08-18 23:41:32,430 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-08-18 23:41:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:33,785 INFO L93 Difference]: Finished difference Result 1027 states and 1575 transitions. [2020-08-18 23:41:33,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:41:33,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-08-18 23:41:33,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:33,799 INFO L225 Difference]: With dead ends: 1027 [2020-08-18 23:41:33,799 INFO L226 Difference]: Without dead ends: 845 [2020-08-18 23:41:33,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:41:33,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-08-18 23:41:33,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 843. [2020-08-18 23:41:33,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2020-08-18 23:41:33,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1268 transitions. [2020-08-18 23:41:33,881 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1268 transitions. Word has length 142 [2020-08-18 23:41:33,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:33,882 INFO L479 AbstractCegarLoop]: Abstraction has 843 states and 1268 transitions. [2020-08-18 23:41:33,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:41:33,882 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1268 transitions. [2020-08-18 23:41:33,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-18 23:41:33,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:33,886 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] [2020-08-18 23:41:33,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:41:33,886 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:33,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:33,887 INFO L82 PathProgramCache]: Analyzing trace with hash 229473698, now seen corresponding path program 1 times [2020-08-18 23:41:33,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:33,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869725273] [2020-08-18 23:41:33,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:34,353 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-18 23:41:34,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:34,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869725273] [2020-08-18 23:41:34,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:34,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:41:34,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611729710] [2020-08-18 23:41:34,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:41:34,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:34,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:41:34,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:41:34,404 INFO L87 Difference]: Start difference. First operand 843 states and 1268 transitions. Second operand 5 states. [2020-08-18 23:41:36,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:36,912 INFO L93 Difference]: Finished difference Result 2459 states and 3695 transitions. [2020-08-18 23:41:36,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:41:36,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-18 23:41:36,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:36,924 INFO L225 Difference]: With dead ends: 2459 [2020-08-18 23:41:36,924 INFO L226 Difference]: Without dead ends: 1629 [2020-08-18 23:41:36,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:41:36,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2020-08-18 23:41:37,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1627. [2020-08-18 23:41:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1627 states. [2020-08-18 23:41:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2425 transitions. [2020-08-18 23:41:37,011 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2425 transitions. Word has length 142 [2020-08-18 23:41:37,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:37,011 INFO L479 AbstractCegarLoop]: Abstraction has 1627 states and 2425 transitions. [2020-08-18 23:41:37,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:41:37,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2425 transitions. [2020-08-18 23:41:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 23:41:37,016 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:37,016 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] [2020-08-18 23:41:37,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:41:37,016 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:37,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:37,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1866532876, now seen corresponding path program 1 times [2020-08-18 23:41:37,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:37,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192000952] [2020-08-18 23:41:37,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:37,277 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-18 23:41:37,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:37,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192000952] [2020-08-18 23:41:37,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:37,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:41:37,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549041663] [2020-08-18 23:41:37,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:41:37,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:37,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:41:37,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:41:37,310 INFO L87 Difference]: Start difference. First operand 1627 states and 2425 transitions. Second operand 4 states. [2020-08-18 23:41:39,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:39,091 INFO L93 Difference]: Finished difference Result 4835 states and 7205 transitions. [2020-08-18 23:41:39,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 23:41:39,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-18 23:41:39,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:39,114 INFO L225 Difference]: With dead ends: 4835 [2020-08-18 23:41:39,114 INFO L226 Difference]: Without dead ends: 3240 [2020-08-18 23:41:39,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:41:39,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2020-08-18 23:41:39,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 1629. [2020-08-18 23:41:39,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2020-08-18 23:41:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2427 transitions. [2020-08-18 23:41:39,243 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2427 transitions. Word has length 143 [2020-08-18 23:41:39,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:39,243 INFO L479 AbstractCegarLoop]: Abstraction has 1629 states and 2427 transitions. [2020-08-18 23:41:39,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:41:39,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2427 transitions. [2020-08-18 23:41:39,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-08-18 23:41:39,247 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:39,248 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] [2020-08-18 23:41:39,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:41:39,248 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:39,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:39,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1747112419, now seen corresponding path program 1 times [2020-08-18 23:41:39,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:39,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112848715] [2020-08-18 23:41:39,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:39,723 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-18 23:41:39,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:39,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112848715] [2020-08-18 23:41:39,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:39,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:41:39,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649544126] [2020-08-18 23:41:39,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:41:39,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:39,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:41:39,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:41:39,808 INFO L87 Difference]: Start difference. First operand 1629 states and 2427 transitions. Second operand 5 states. [2020-08-18 23:41:42,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:42,453 INFO L93 Difference]: Finished difference Result 4735 states and 7041 transitions. [2020-08-18 23:41:42,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:41:42,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-08-18 23:41:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:42,471 INFO L225 Difference]: With dead ends: 4735 [2020-08-18 23:41:42,471 INFO L226 Difference]: Without dead ends: 3140 [2020-08-18 23:41:42,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:41:42,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2020-08-18 23:41:42,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3138. [2020-08-18 23:41:42,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3138 states. [2020-08-18 23:41:42,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4626 transitions. [2020-08-18 23:41:42,662 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4626 transitions. Word has length 144 [2020-08-18 23:41:42,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:42,663 INFO L479 AbstractCegarLoop]: Abstraction has 3138 states and 4626 transitions. [2020-08-18 23:41:42,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:41:42,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4626 transitions. [2020-08-18 23:41:42,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-18 23:41:42,670 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:42,670 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] [2020-08-18 23:41:42,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:41:42,670 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:42,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:42,671 INFO L82 PathProgramCache]: Analyzing trace with hash 470263341, now seen corresponding path program 1 times [2020-08-18 23:41:42,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:42,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885304381] [2020-08-18 23:41:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:42,941 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-18 23:41:42,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:42,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885304381] [2020-08-18 23:41:42,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:42,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:41:42,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801488150] [2020-08-18 23:41:42,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:41:42,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:42,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:41:42,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:41:42,981 INFO L87 Difference]: Start difference. First operand 3138 states and 4626 transitions. Second operand 4 states. [2020-08-18 23:41:45,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:45,688 INFO L93 Difference]: Finished difference Result 9330 states and 13750 transitions. [2020-08-18 23:41:45,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 23:41:45,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-08-18 23:41:45,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:45,719 INFO L225 Difference]: With dead ends: 9330 [2020-08-18 23:41:45,719 INFO L226 Difference]: Without dead ends: 6240 [2020-08-18 23:41:45,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:41:45,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2020-08-18 23:41:45,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 3142. [2020-08-18 23:41:45,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3142 states. [2020-08-18 23:41:45,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4630 transitions. [2020-08-18 23:41:45,976 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4630 transitions. Word has length 145 [2020-08-18 23:41:45,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:45,977 INFO L479 AbstractCegarLoop]: Abstraction has 3142 states and 4630 transitions. [2020-08-18 23:41:45,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:41:45,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4630 transitions. [2020-08-18 23:41:45,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 23:41:45,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:45,984 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] [2020-08-18 23:41:45,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:41:45,984 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:45,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:45,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1966669402, now seen corresponding path program 1 times [2020-08-18 23:41:45,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:45,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435298560] [2020-08-18 23:41:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:46,329 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-18 23:41:46,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:46,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435298560] [2020-08-18 23:41:46,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:46,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:41:46,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446221007] [2020-08-18 23:41:46,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:41:46,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:46,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:41:46,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:41:46,402 INFO L87 Difference]: Start difference. First operand 3142 states and 4630 transitions. Second operand 4 states. [2020-08-18 23:41:49,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:49,191 INFO L93 Difference]: Finished difference Result 8922 states and 13174 transitions. [2020-08-18 23:41:49,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 23:41:49,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-18 23:41:49,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:49,219 INFO L225 Difference]: With dead ends: 8922 [2020-08-18 23:41:49,219 INFO L226 Difference]: Without dead ends: 6068 [2020-08-18 23:41:49,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:41:49,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6068 states. [2020-08-18 23:41:49,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6068 to 6066. [2020-08-18 23:41:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6066 states. [2020-08-18 23:41:49,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 8848 transitions. [2020-08-18 23:41:49,537 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 8848 transitions. Word has length 146 [2020-08-18 23:41:49,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:49,539 INFO L479 AbstractCegarLoop]: Abstraction has 6066 states and 8848 transitions. [2020-08-18 23:41:49,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:41:49,539 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 8848 transitions. [2020-08-18 23:41:49,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 23:41:49,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:49,549 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] [2020-08-18 23:41:49,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:41:49,549 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:49,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:49,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1533440317, now seen corresponding path program 1 times [2020-08-18 23:41:49,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:49,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709552778] [2020-08-18 23:41:49,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:49,970 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-18 23:41:49,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:50,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709552778] [2020-08-18 23:41:50,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:50,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:41:50,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583208428] [2020-08-18 23:41:50,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:41:50,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:50,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:41:50,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:41:50,030 INFO L87 Difference]: Start difference. First operand 6066 states and 8848 transitions. Second operand 5 states. [2020-08-18 23:41:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:51,871 INFO L93 Difference]: Finished difference Result 12466 states and 18074 transitions. [2020-08-18 23:41:51,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:41:51,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-18 23:41:51,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:51,898 INFO L225 Difference]: With dead ends: 12466 [2020-08-18 23:41:51,898 INFO L226 Difference]: Without dead ends: 6280 [2020-08-18 23:41:51,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:41:51,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2020-08-18 23:41:52,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 6278. [2020-08-18 23:41:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6278 states. [2020-08-18 23:41:52,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 9022 transitions. [2020-08-18 23:41:52,264 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 9022 transitions. Word has length 146 [2020-08-18 23:41:52,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:52,264 INFO L479 AbstractCegarLoop]: Abstraction has 6278 states and 9022 transitions. [2020-08-18 23:41:52,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:41:52,265 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 9022 transitions. [2020-08-18 23:41:52,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 23:41:52,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:52,274 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] [2020-08-18 23:41:52,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:41:52,275 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:52,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:52,275 INFO L82 PathProgramCache]: Analyzing trace with hash -400414044, now seen corresponding path program 1 times [2020-08-18 23:41:52,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:52,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538461758] [2020-08-18 23:41:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,594 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-18 23:41:52,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:52,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538461758] [2020-08-18 23:41:52,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:52,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:41:52,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419546095] [2020-08-18 23:41:52,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:41:52,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:52,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:41:52,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:41:52,651 INFO L87 Difference]: Start difference. First operand 6278 states and 9022 transitions. Second operand 5 states. [2020-08-18 23:41:54,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:54,956 INFO L93 Difference]: Finished difference Result 9166 states and 13176 transitions. [2020-08-18 23:41:54,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:41:54,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-18 23:41:54,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:54,981 INFO L225 Difference]: With dead ends: 9166 [2020-08-18 23:41:54,982 INFO L226 Difference]: Without dead ends: 6280 [2020-08-18 23:41:54,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:41:54,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2020-08-18 23:41:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 6066. [2020-08-18 23:41:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6066 states. [2020-08-18 23:41:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 8760 transitions. [2020-08-18 23:41:55,269 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 8760 transitions. Word has length 146 [2020-08-18 23:41:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:55,270 INFO L479 AbstractCegarLoop]: Abstraction has 6066 states and 8760 transitions. [2020-08-18 23:41:55,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:41:55,270 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 8760 transitions. [2020-08-18 23:41:55,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 23:41:55,279 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:55,279 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] [2020-08-18 23:41:55,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:41:55,280 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:55,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:55,280 INFO L82 PathProgramCache]: Analyzing trace with hash -946102129, now seen corresponding path program 1 times [2020-08-18 23:41:55,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:55,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010880941] [2020-08-18 23:41:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,525 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-18 23:41:55,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:55,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010880941] [2020-08-18 23:41:55,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:55,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:41:55,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283775015] [2020-08-18 23:41:55,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:41:55,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:55,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:41:55,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:41:55,641 INFO L87 Difference]: Start difference. First operand 6066 states and 8760 transitions. Second operand 4 states. [2020-08-18 23:41:57,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:57,448 INFO L93 Difference]: Finished difference Result 14910 states and 21518 transitions. [2020-08-18 23:41:57,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 23:41:57,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-08-18 23:41:57,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:57,468 INFO L225 Difference]: With dead ends: 14910 [2020-08-18 23:41:57,468 INFO L226 Difference]: Without dead ends: 12024 [2020-08-18 23:41:57,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:41:57,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12024 states. [2020-08-18 23:41:57,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12024 to 6074. [2020-08-18 23:41:57,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6074 states. [2020-08-18 23:41:57,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 8768 transitions. [2020-08-18 23:41:57,957 INFO L78 Accepts]: Start accepts. Automaton has 6074 states and 8768 transitions. Word has length 147 [2020-08-18 23:41:57,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:57,957 INFO L479 AbstractCegarLoop]: Abstraction has 6074 states and 8768 transitions. [2020-08-18 23:41:57,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:41:57,957 INFO L276 IsEmpty]: Start isEmpty. Operand 6074 states and 8768 transitions. [2020-08-18 23:41:57,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 23:41:57,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:57,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:41:57,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:41:57,965 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:57,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:57,966 INFO L82 PathProgramCache]: Analyzing trace with hash 585736260, now seen corresponding path program 1 times [2020-08-18 23:41:57,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:57,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956361363] [2020-08-18 23:41:57,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:58,268 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-18 23:41:58,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:58,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:58,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956361363] [2020-08-18 23:41:58,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:58,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:41:58,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067836952] [2020-08-18 23:41:58,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:41:58,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:58,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:41:58,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:41:58,313 INFO L87 Difference]: Start difference. First operand 6074 states and 8768 transitions. Second operand 5 states. [2020-08-18 23:42:00,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:42:00,901 INFO L93 Difference]: Finished difference Result 17704 states and 25485 transitions. [2020-08-18 23:42:00,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:42:00,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-18 23:42:00,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:42:00,917 INFO L225 Difference]: With dead ends: 17704 [2020-08-18 23:42:00,917 INFO L226 Difference]: Without dead ends: 11677 [2020-08-18 23:42:00,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:42:00,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11677 states. [2020-08-18 23:42:01,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11677 to 11675. [2020-08-18 23:42:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11675 states. [2020-08-18 23:42:01,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11675 states to 11675 states and 16612 transitions. [2020-08-18 23:42:01,617 INFO L78 Accepts]: Start accepts. Automaton has 11675 states and 16612 transitions. Word has length 148 [2020-08-18 23:42:01,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:42:01,617 INFO L479 AbstractCegarLoop]: Abstraction has 11675 states and 16612 transitions. [2020-08-18 23:42:01,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:42:01,617 INFO L276 IsEmpty]: Start isEmpty. Operand 11675 states and 16612 transitions. [2020-08-18 23:42:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 23:42:01,628 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:42:01,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:42:01,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 23:42:01,629 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:42:01,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:42:01,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1497708571, now seen corresponding path program 1 times [2020-08-18 23:42:01,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:42:01,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053032148] [2020-08-18 23:42:01,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:42:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 23:42:01,694 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 23:42:01,694 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 23:42:01,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 23:42:01,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:42:01 BoogieIcfgContainer [2020-08-18 23:42:01,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:42:01,752 INFO L168 Benchmark]: Toolchain (without parser) took 35616.24 ms. Allocated memory was 138.9 MB in the beginning and 837.8 MB in the end (delta: 698.9 MB). Free memory was 101.1 MB in the beginning and 540.6 MB in the end (delta: -439.5 MB). Peak memory consumption was 259.4 MB. Max. memory is 7.1 GB. [2020-08-18 23:42:01,753 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.0 MB in the end (delta: 419.9 kB). Peak memory consumption was 419.9 kB. Max. memory is 7.1 GB. [2020-08-18 23:42:01,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.90 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 166.6 MB in the end (delta: -65.5 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. [2020-08-18 23:42:01,754 INFO L168 Benchmark]: Boogie Preprocessor took 100.16 ms. Allocated memory is still 201.9 MB. Free memory was 166.6 MB in the beginning and 162.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 23:42:01,755 INFO L168 Benchmark]: RCFGBuilder took 1245.08 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 162.5 MB in the beginning and 156.3 MB in the end (delta: 6.2 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2020-08-18 23:42:01,756 INFO L168 Benchmark]: TraceAbstraction took 33475.72 ms. Allocated memory was 234.4 MB in the beginning and 837.8 MB in the end (delta: 603.5 MB). Free memory was 156.3 MB in the beginning and 540.6 MB in the end (delta: -384.3 MB). Peak memory consumption was 219.1 MB. Max. memory is 7.1 GB. [2020-08-18 23:42:01,760 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.0 MB in the end (delta: 419.9 kB). Peak memory consumption was 419.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 790.90 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 166.6 MB in the end (delta: -65.5 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.16 ms. Allocated memory is still 201.9 MB. Free memory was 166.6 MB in the beginning and 162.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1245.08 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 162.5 MB in the beginning and 156.3 MB in the end (delta: 6.2 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33475.72 ms. Allocated memory was 234.4 MB in the beginning and 837.8 MB in the end (delta: 603.5 MB). Free memory was 156.3 MB in the beginning and 540.6 MB in the end (delta: -384.3 MB). Peak memory consumption was 219.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 813]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] char id2 = '\x0'; [L47] char r2 = '\x0'; [L48] char st2 = '\x0'; [L49] char nl2 = '\x0'; [L50] char m2 = '\x0'; [L51] char max2 = '\x0'; [L52] _Bool mode2 = 0; [L53] char id3 = '\x0'; [L54] char r3 = '\x0'; [L55] char st3 = '\x0'; [L56] char nl3 = '\x0'; [L57] char m3 = '\x0'; [L58] char max3 = '\x0'; [L59] _Bool mode3 = 0; [L63] void (*nodes[3])() = { &node1, &node2, &node3 }; [L67] int __return_1708; [L68] int __return_1836; [L69] int __return_1954; [L70] int __return_2075; [L71] int __return_2198; [L72] int __tmp_2199_0; [L73] int __return_2307; [L74] int __return_2212; [L77] int main__c1; [L78] int main__i2; [L79] main__c1 = 0 [L80] ep12 = __VERIFIER_nondet_bool() [L81] ep13 = __VERIFIER_nondet_bool() [L82] ep21 = __VERIFIER_nondet_bool() [L83] ep23 = __VERIFIER_nondet_bool() [L84] ep31 = __VERIFIER_nondet_bool() [L85] ep32 = __VERIFIER_nondet_bool() [L86] id1 = __VERIFIER_nondet_char() [L87] r1 = __VERIFIER_nondet_char() [L88] st1 = __VERIFIER_nondet_char() [L89] nl1 = __VERIFIER_nondet_char() [L90] m1 = __VERIFIER_nondet_char() [L91] max1 = __VERIFIER_nondet_char() [L92] mode1 = __VERIFIER_nondet_bool() [L93] id2 = __VERIFIER_nondet_char() [L94] r2 = __VERIFIER_nondet_char() [L95] st2 = __VERIFIER_nondet_char() [L96] nl2 = __VERIFIER_nondet_char() [L97] m2 = __VERIFIER_nondet_char() [L98] max2 = __VERIFIER_nondet_char() [L99] mode2 = __VERIFIER_nondet_bool() [L100] id3 = __VERIFIER_nondet_char() [L101] r3 = __VERIFIER_nondet_char() [L102] st3 = __VERIFIER_nondet_char() [L103] nl3 = __VERIFIER_nondet_char() [L104] m3 = __VERIFIER_nondet_char() [L105] max3 = __VERIFIER_nondet_char() [L106] mode3 = __VERIFIER_nondet_bool() [L108] _Bool init__r121; [L109] _Bool init__r131; [L110] _Bool init__r211; [L111] _Bool init__r231; [L112] _Bool init__r311; [L113] _Bool init__r321; [L114] _Bool init__r122; [L115] int init__tmp; [L116] _Bool init__r132; [L117] int init__tmp___0; [L118] _Bool init__r212; [L119] int init__tmp___1; [L120] _Bool init__r232; [L121] int init__tmp___2; [L122] _Bool init__r312; [L123] int init__tmp___3; [L124] _Bool init__r322; [L125] int init__tmp___4; [L126] int init__tmp___5; [L127] init__r121 = ep12 [L128] init__r131 = ep13 [L129] init__r211 = ep21 [L130] init__r231 = ep23 [L131] init__r311 = ep31 [L132] init__r321 = ep32 [L133] COND FALSE !(!(init__r121 == 0)) [L2223] COND FALSE !(!(init__r131 == 0)) [L2239] init__tmp = 0 [L137] init__r122 = (_Bool)init__tmp [L138] COND FALSE !(!(init__r131 == 0)) [L2200] COND FALSE !(!(init__r121 == 0)) [L2216] init__tmp___0 = 0 [L142] init__r132 = (_Bool)init__tmp___0 [L143] COND FALSE !(!(init__r211 == 0)) [L2177] COND FALSE !(!(init__r231 == 0)) [L2193] init__tmp___1 = 0 [L147] init__r212 = (_Bool)init__tmp___1 [L148] COND FALSE !(!(init__r231 == 0)) [L2154] COND FALSE !(!(init__r211 == 0)) [L2170] init__tmp___2 = 0 [L152] init__r232 = (_Bool)init__tmp___2 [L153] COND FALSE !(!(init__r311 == 0)) [L2131] COND FALSE !(!(init__r321 == 0)) [L2147] init__tmp___3 = 0 [L157] init__r312 = (_Bool)init__tmp___3 [L158] COND FALSE !(!(init__r321 == 0)) [L2108] COND FALSE !(!(init__r311 == 0)) [L2124] init__tmp___4 = 0 [L162] init__r322 = (_Bool)init__tmp___4 [L163] COND TRUE ((int)id1) != ((int)id2) [L165] COND TRUE ((int)id1) != ((int)id3) [L167] COND TRUE ((int)id2) != ((int)id3) [L169] COND TRUE ((int)id1) >= 0 [L171] COND TRUE ((int)id2) >= 0 [L173] COND TRUE ((int)id3) >= 0 [L175] COND TRUE ((int)r1) == 0 [L177] COND TRUE ((int)r2) == 0 [L179] COND TRUE ((int)r3) == 0 [L181] COND TRUE ((int)max1) == ((int)id1) [L183] COND TRUE ((int)max2) == ((int)id2) [L185] COND TRUE ((int)max3) == ((int)id3) [L187] COND TRUE ((int)st1) == 0 [L189] COND TRUE ((int)st2) == 0 [L191] COND TRUE ((int)st3) == 0 [L193] COND TRUE ((int)nl1) == 0 [L195] COND TRUE ((int)nl2) == 0 [L197] COND TRUE ((int)nl3) == 0 [L199] COND TRUE ((int)mode1) == 0 [L201] COND TRUE ((int)mode2) == 0 [L203] COND TRUE ((int)mode3) == 0 [L205] init__tmp___5 = 1 [L206] __return_1708 = init__tmp___5 [L207] main__i2 = __return_1708 [L208] COND TRUE main__i2 != 0 [L210] p12_old = nomsg [L211] p12_new = nomsg [L212] p13_old = nomsg [L213] p13_new = nomsg [L214] p21_old = nomsg [L215] p21_new = nomsg [L216] p23_old = nomsg [L217] p23_new = nomsg [L218] p31_old = nomsg [L219] p31_new = nomsg [L220] p32_old = nomsg [L221] p32_new = nomsg [L222] main__i2 = 0 [L223] COND TRUE main__i2 < 6 [L226] COND FALSE !(!(mode1 == 0)) [L232] COND TRUE ((int)r1) < 2 [L234] COND FALSE !(!(ep12 == 0)) [L245] COND FALSE !(!(ep13 == 0)) [L256] mode1 = 1 [L258] COND FALSE !(!(mode2 == 0)) [L264] COND TRUE ((int)r2) < 2 [L266] COND FALSE !(!(ep21 == 0)) [L277] COND FALSE !(!(ep23 == 0)) [L288] mode2 = 1 [L290] COND FALSE !(!(mode3 == 0)) [L296] COND TRUE ((int)r3) < 2 [L298] COND FALSE !(!(ep31 == 0)) [L309] COND FALSE !(!(ep32 == 0)) [L320] mode3 = 1 [L321] p12_old = p12_new [L322] p12_new = nomsg [L323] p13_old = p13_new [L324] p13_new = nomsg [L325] p21_old = p21_new [L326] p21_new = nomsg [L327] p23_old = p23_new [L328] p23_new = nomsg [L329] p31_old = p31_new [L330] p31_new = nomsg [L331] p32_old = p32_new [L332] p32_new = nomsg [L334] int check__tmp; [L335] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L337] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L339] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L341] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L343] COND FALSE !(((int)r1) >= 2) [L349] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L351] COND TRUE ((int)r1) < 2 [L353] COND FALSE !(((int)r1) >= 2) [L359] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L361] COND TRUE ((int)r1) < 2 [L363] check__tmp = 1 [L364] __return_1836 = check__tmp [L365] main__c1 = __return_1836 [L367] _Bool __tmp_1; [L368] __tmp_1 = main__c1 [L369] _Bool assert__arg; [L370] assert__arg = __tmp_1 [L371] COND FALSE !(assert__arg == 0) [L377] int main____CPAchecker_TMP_0 = main__i2; [L378] main__i2 = main__i2 + 1 [L379] COND TRUE main__i2 < 6 [L382] COND TRUE !(mode1 == 0) [L384] r1 = (char)(((int)r1) + 1) [L385] COND FALSE !(!(ep21 == 0)) [L393] COND FALSE !(!(ep31 == 0)) [L401] COND FALSE !(((int)r1) == 2) [L407] mode1 = 0 [L409] COND TRUE !(mode2 == 0) [L411] r2 = (char)(((int)r2) + 1) [L412] COND FALSE !(!(ep12 == 0)) [L420] COND FALSE !(!(ep32 == 0)) [L428] COND FALSE !(((int)r2) == 2) [L434] mode2 = 0 [L436] COND TRUE !(mode3 == 0) [L438] r3 = (char)(((int)r3) + 1) [L439] COND FALSE !(!(ep13 == 0)) [L447] COND FALSE !(!(ep23 == 0)) [L455] COND FALSE !(((int)r3) == 2) [L461] mode3 = 0 [L462] p12_old = p12_new [L463] p12_new = nomsg [L464] p13_old = p13_new [L465] p13_new = nomsg [L466] p21_old = p21_new [L467] p21_new = nomsg [L468] p23_old = p23_new [L469] p23_new = nomsg [L470] p31_old = p31_new [L471] p31_new = nomsg [L472] p32_old = p32_new [L473] p32_new = nomsg [L475] int check__tmp; [L476] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L478] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L480] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L482] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L484] COND FALSE !(((int)r1) >= 2) [L490] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L492] COND TRUE ((int)r1) < 2 [L494] COND FALSE !(((int)r1) >= 2) [L500] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L502] COND TRUE ((int)r1) < 2 [L504] check__tmp = 1 [L505] __return_1954 = check__tmp [L506] main__c1 = __return_1954 [L508] _Bool __tmp_2; [L509] __tmp_2 = main__c1 [L510] _Bool assert__arg; [L511] assert__arg = __tmp_2 [L512] COND FALSE !(assert__arg == 0) [L518] int main____CPAchecker_TMP_0 = main__i2; [L519] main__i2 = main__i2 + 1 [L520] COND TRUE main__i2 < 6 [L523] COND FALSE !(!(mode1 == 0)) [L529] COND TRUE ((int)r1) < 2 [L531] COND FALSE !(!(ep12 == 0)) [L542] COND FALSE !(!(ep13 == 0)) [L553] mode1 = 1 [L555] COND FALSE !(!(mode2 == 0)) [L561] COND TRUE ((int)r2) < 2 [L563] COND FALSE !(!(ep21 == 0)) [L574] COND FALSE !(!(ep23 == 0)) [L585] mode2 = 1 [L587] COND FALSE !(!(mode3 == 0)) [L593] COND TRUE ((int)r3) < 2 [L595] COND FALSE !(!(ep31 == 0)) [L606] COND FALSE !(!(ep32 == 0)) [L617] mode3 = 1 [L618] p12_old = p12_new [L619] p12_new = nomsg [L620] p13_old = p13_new [L621] p13_new = nomsg [L622] p21_old = p21_new [L623] p21_new = nomsg [L624] p23_old = p23_new [L625] p23_new = nomsg [L626] p31_old = p31_new [L627] p31_new = nomsg [L628] p32_old = p32_new [L629] p32_new = nomsg [L631] int check__tmp; [L632] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L634] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L636] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L638] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L640] COND FALSE !(((int)r1) >= 2) [L646] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L648] COND TRUE ((int)r1) < 2 [L650] COND FALSE !(((int)r1) >= 2) [L656] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L658] COND TRUE ((int)r1) < 2 [L660] check__tmp = 1 [L661] __return_2075 = check__tmp [L662] main__c1 = __return_2075 [L664] _Bool __tmp_3; [L665] __tmp_3 = main__c1 [L666] _Bool assert__arg; [L667] assert__arg = __tmp_3 [L668] COND FALSE !(assert__arg == 0) [L674] int main____CPAchecker_TMP_0 = main__i2; [L675] main__i2 = main__i2 + 1 [L676] COND TRUE main__i2 < 6 [L679] COND TRUE !(mode1 == 0) [L681] r1 = (char)(((int)r1) + 1) [L682] COND FALSE !(!(ep21 == 0)) [L690] COND FALSE !(!(ep31 == 0)) [L698] COND TRUE ((int)r1) == 2 [L700] COND TRUE ((int)max1) == ((int)id1) [L702] st1 = 1 [L704] mode1 = 0 [L706] COND TRUE !(mode2 == 0) [L708] r2 = (char)(((int)r2) + 1) [L709] COND FALSE !(!(ep12 == 0)) [L717] COND FALSE !(!(ep32 == 0)) [L725] COND TRUE ((int)r2) == 2 [L727] COND TRUE ((int)max2) == ((int)id2) [L729] st2 = 1 [L731] mode2 = 0 [L733] COND TRUE !(mode3 == 0) [L735] r3 = (char)(((int)r3) + 1) [L736] COND FALSE !(!(ep13 == 0)) [L744] COND FALSE !(!(ep23 == 0)) [L752] COND TRUE ((int)r3) == 2 [L754] COND TRUE ((int)max3) == ((int)id3) [L756] st3 = 1 [L758] mode3 = 0 [L759] p12_old = p12_new [L760] p12_new = nomsg [L761] p13_old = p13_new [L762] p13_new = nomsg [L763] p21_old = p21_new [L764] p21_new = nomsg [L765] p23_old = p23_new [L766] p23_new = nomsg [L767] p31_old = p31_new [L768] p31_new = nomsg [L769] p32_old = p32_new [L770] p32_new = nomsg [L772] int check__tmp; [L773] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1398] check__tmp = 0 [L801] __return_2198 = check__tmp [L802] main__c1 = __return_2198 [L803] __tmp_2199_0 = main____CPAchecker_TMP_0 [L805] main____CPAchecker_TMP_0 = __tmp_2199_0 [L807] _Bool __tmp_4; [L808] __tmp_4 = main__c1 [L809] _Bool assert__arg; [L810] assert__arg = __tmp_4 [L811] COND TRUE assert__arg == 0 [L813] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 308 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.3s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 24.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7042 SDtfs, 6766 SDslu, 4400 SDs, 0 SdLazy, 7530 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11675occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 10887 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 1739 NumberOfCodeBlocks, 1739 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1580 ConstructedInterpolants, 0 QuantifiedInterpolants, 798711 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...