/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.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:41:29,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:41:29,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:41:29,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:41:29,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:41:29,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:41:29,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:41:29,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:41:29,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:41:29,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:41:29,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:41:29,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:41:29,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:41:29,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:41:29,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:41:29,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:41:29,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:41:29,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:41:29,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:41:29,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:41:29,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:41:29,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:41:29,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:41:29,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:41:29,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:41:29,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:41:29,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:41:29,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:41:29,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:41:29,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-18 23:41:29,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:41:29,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:41:29,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:41:29,312 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 23:41:29,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:41:29,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:41:29,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:41:29,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:41:29,356 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:41:29,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:41:29,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:41:29,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:41:29,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:41:29,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:41:29,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:41:29,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:41:29,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:41:29,359 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:41:29,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:41:29,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:41:29,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:41:29,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:41:29,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:41:29,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:41:29,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:41:29,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:41:29,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:41:29,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:41:29,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:41:29,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:41:29,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:41:29,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:41:29,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:41:29,362 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 23:41:29,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:41:29,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:41:29,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:41:29,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:41:29,709 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:41:29,710 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-18 23:41:29,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbc10034c/7de653aa5e854a1dba3247610e8c8976/FLAGd64e5f332 [2020-08-18 23:41:30,357 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:41:30,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-18 23:41:30,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbc10034c/7de653aa5e854a1dba3247610e8c8976/FLAGd64e5f332 [2020-08-18 23:41:30,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbc10034c/7de653aa5e854a1dba3247610e8c8976 [2020-08-18 23:41:30,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:41:30,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:41:30,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:41:30,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:41:30,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:41:30,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:41:30" (1/1) ... [2020-08-18 23:41:30,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e2220c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:30, skipping insertion in model container [2020-08-18 23:41:30,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:41:30" (1/1) ... [2020-08-18 23:41:30,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:41:30,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:41:31,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:41:31,444 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:41:31,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:41:31,870 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:41:31,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:31 WrapperNode [2020-08-18 23:41:31,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:41:31,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:41:31,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:41:31,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:41:31,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:31" (1/1) ... [2020-08-18 23:41:31,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:31" (1/1) ... [2020-08-18 23:41:31,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:31" (1/1) ... [2020-08-18 23:41:31,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:31" (1/1) ... [2020-08-18 23:41:31,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:31" (1/1) ... [2020-08-18 23:41:31,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:31" (1/1) ... [2020-08-18 23:41:31,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:31" (1/1) ... [2020-08-18 23:41:31,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:41:31,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:41:31,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:41:31,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:41:31,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:31" (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 23:41:32,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:41:32,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:41:32,104 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 23:41:32,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:41:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:41:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 23:41:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-18 23:41:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 23:41:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 23:41:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 23:41:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 23:41:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 23:41:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 23:41:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-18 23:41:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-18 23:41:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-18 23:41:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 23:41:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 23:41:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:41:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:41:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:41:33,868 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:41:33,869 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 23:41:33,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:41:33 BoogieIcfgContainer [2020-08-18 23:41:33,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:41:33,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:41:33,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:41:33,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:41:33,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:41:30" (1/3) ... [2020-08-18 23:41:33,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354bf5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:41:33, skipping insertion in model container [2020-08-18 23:41:33,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:31" (2/3) ... [2020-08-18 23:41:33,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354bf5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:41:33, skipping insertion in model container [2020-08-18 23:41:33,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:41:33" (3/3) ... [2020-08-18 23:41:33,896 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-18 23:41:33,906 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:41:33,919 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-18 23:41:33,934 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-18 23:41:33,969 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:41:33,969 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:41:33,969 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:41:33,970 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:41:33,970 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:41:33,970 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:41:33,970 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:41:33,970 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:41:33,998 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states. [2020-08-18 23:41:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 23:41:34,016 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:34,017 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] [2020-08-18 23:41:34,018 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:34,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:34,024 INFO L82 PathProgramCache]: Analyzing trace with hash -731921028, now seen corresponding path program 1 times [2020-08-18 23:41:34,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:34,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651913111] [2020-08-18 23:41:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:34,989 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:41:34,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:35,154 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 23:41:35,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651913111] [2020-08-18 23:41:35,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:35,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:41:35,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335173617] [2020-08-18 23:41:35,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:41:35,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:35,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:41:35,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:41:35,183 INFO L87 Difference]: Start difference. First operand 387 states. Second operand 4 states. [2020-08-18 23:41:35,482 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:41:37,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:37,919 INFO L93 Difference]: Finished difference Result 708 states and 1251 transitions. [2020-08-18 23:41:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:41:37,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-08-18 23:41:37,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:37,941 INFO L225 Difference]: With dead ends: 708 [2020-08-18 23:41:37,941 INFO L226 Difference]: Without dead ends: 553 [2020-08-18 23:41:37,945 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 23:41:37,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-08-18 23:41:38,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 551. [2020-08-18 23:41:38,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-08-18 23:41:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 806 transitions. [2020-08-18 23:41:38,035 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 806 transitions. Word has length 139 [2020-08-18 23:41:38,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:38,036 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 806 transitions. [2020-08-18 23:41:38,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:41:38,036 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 806 transitions. [2020-08-18 23:41:38,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 23:41:38,043 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:38,043 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] [2020-08-18 23:41:38,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:41:38,044 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:38,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:38,044 INFO L82 PathProgramCache]: Analyzing trace with hash 807798716, now seen corresponding path program 1 times [2020-08-18 23:41:38,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:38,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446062915] [2020-08-18 23:41:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:38,511 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:41:38,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:38,576 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 23:41:38,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446062915] [2020-08-18 23:41:38,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:38,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:41:38,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976354864] [2020-08-18 23:41:38,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:41:38,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:38,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:41:38,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:41:38,580 INFO L87 Difference]: Start difference. First operand 551 states and 806 transitions. Second operand 4 states. [2020-08-18 23:41:38,816 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:41:40,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:40,708 INFO L93 Difference]: Finished difference Result 1108 states and 1675 transitions. [2020-08-18 23:41:40,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:41:40,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-08-18 23:41:40,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:40,722 INFO L225 Difference]: With dead ends: 1108 [2020-08-18 23:41:40,722 INFO L226 Difference]: Without dead ends: 891 [2020-08-18 23:41:40,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:41:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-18 23:41:40,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 889. [2020-08-18 23:41:40,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-08-18 23:41:40,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1322 transitions. [2020-08-18 23:41:40,784 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1322 transitions. Word has length 139 [2020-08-18 23:41:40,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:40,784 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1322 transitions. [2020-08-18 23:41:40,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:41:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1322 transitions. [2020-08-18 23:41:40,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 23:41:40,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:40,789 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] [2020-08-18 23:41:40,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:41:40,789 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:40,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:40,790 INFO L82 PathProgramCache]: Analyzing trace with hash -332552132, now seen corresponding path program 1 times [2020-08-18 23:41:40,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:40,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442433618] [2020-08-18 23:41:40,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:41,261 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:41:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:41,333 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 23:41:41,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442433618] [2020-08-18 23:41:41,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:41,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:41:41,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785029518] [2020-08-18 23:41:41,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:41:41,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:41,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:41:41,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:41:41,339 INFO L87 Difference]: Start difference. First operand 889 states and 1322 transitions. Second operand 5 states. [2020-08-18 23:41:44,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:44,439 INFO L93 Difference]: Finished difference Result 2594 states and 3851 transitions. [2020-08-18 23:41:44,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:41:44,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-08-18 23:41:44,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:44,450 INFO L225 Difference]: With dead ends: 2594 [2020-08-18 23:41:44,450 INFO L226 Difference]: Without dead ends: 1718 [2020-08-18 23:41:44,457 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 23:41:44,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2020-08-18 23:41:44,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1690. [2020-08-18 23:41:44,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-08-18 23:41:44,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2499 transitions. [2020-08-18 23:41:44,543 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2499 transitions. Word has length 139 [2020-08-18 23:41:44,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:44,544 INFO L479 AbstractCegarLoop]: Abstraction has 1690 states and 2499 transitions. [2020-08-18 23:41:44,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:41:44,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2499 transitions. [2020-08-18 23:41:44,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-08-18 23:41:44,549 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:44,550 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] [2020-08-18 23:41:44,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:41:44,550 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:44,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:44,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1153443372, now seen corresponding path program 1 times [2020-08-18 23:41:44,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:44,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253301597] [2020-08-18 23:41:44,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:44,885 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:41:44,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:44,935 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 23:41:44,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253301597] [2020-08-18 23:41:44,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:44,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:41:44,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331584344] [2020-08-18 23:41:44,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:41:44,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:44,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:41:44,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:41:44,938 INFO L87 Difference]: Start difference. First operand 1690 states and 2499 transitions. Second operand 4 states. [2020-08-18 23:41:47,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:47,063 INFO L93 Difference]: Finished difference Result 5024 states and 7427 transitions. [2020-08-18 23:41:47,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 23:41:47,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-08-18 23:41:47,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:47,084 INFO L225 Difference]: With dead ends: 5024 [2020-08-18 23:41:47,084 INFO L226 Difference]: Without dead ends: 3366 [2020-08-18 23:41:47,088 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 23:41:47,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2020-08-18 23:41:47,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 1692. [2020-08-18 23:41:47,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1692 states. [2020-08-18 23:41:47,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2501 transitions. [2020-08-18 23:41:47,203 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2501 transitions. Word has length 140 [2020-08-18 23:41:47,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:47,204 INFO L479 AbstractCegarLoop]: Abstraction has 1692 states and 2501 transitions. [2020-08-18 23:41:47,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:41:47,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2501 transitions. [2020-08-18 23:41:47,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-18 23:41:47,207 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:47,208 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] [2020-08-18 23:41:47,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:41:47,208 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:47,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:47,209 INFO L82 PathProgramCache]: Analyzing trace with hash 2018819803, now seen corresponding path program 1 times [2020-08-18 23:41:47,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:47,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333245634] [2020-08-18 23:41:47,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:47,637 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:41:47,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:47,695 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 23:41:47,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333245634] [2020-08-18 23:41:47,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:47,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:41:47,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550610142] [2020-08-18 23:41:47,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:41:47,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:47,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:41:47,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:41:47,699 INFO L87 Difference]: Start difference. First operand 1692 states and 2501 transitions. Second operand 5 states. [2020-08-18 23:41:50,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:50,002 INFO L93 Difference]: Finished difference Result 4920 states and 7255 transitions. [2020-08-18 23:41:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:41:50,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-08-18 23:41:50,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:50,019 INFO L225 Difference]: With dead ends: 4920 [2020-08-18 23:41:50,019 INFO L226 Difference]: Without dead ends: 3262 [2020-08-18 23:41:50,023 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 23:41:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2020-08-18 23:41:50,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3234. [2020-08-18 23:41:50,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3234 states. [2020-08-18 23:41:50,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4739 transitions. [2020-08-18 23:41:50,170 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4739 transitions. Word has length 141 [2020-08-18 23:41:50,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:50,171 INFO L479 AbstractCegarLoop]: Abstraction has 3234 states and 4739 transitions. [2020-08-18 23:41:50,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:41:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4739 transitions. [2020-08-18 23:41:50,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-18 23:41:50,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:50,178 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 23:41:50,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:41:50,178 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:50,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:50,180 INFO L82 PathProgramCache]: Analyzing trace with hash -551640981, now seen corresponding path program 1 times [2020-08-18 23:41:50,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:50,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553388568] [2020-08-18 23:41:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,502 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:41:50,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:50,540 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 23:41:50,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553388568] [2020-08-18 23:41:50,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:50,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:41:50,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152674842] [2020-08-18 23:41:50,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:41:50,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:50,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:41:50,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:41:50,543 INFO L87 Difference]: Start difference. First operand 3234 states and 4739 transitions. Second operand 4 states. [2020-08-18 23:41:53,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:53,370 INFO L93 Difference]: Finished difference Result 9618 states and 14089 transitions. [2020-08-18 23:41:53,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 23:41:53,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-08-18 23:41:53,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:53,397 INFO L225 Difference]: With dead ends: 9618 [2020-08-18 23:41:53,398 INFO L226 Difference]: Without dead ends: 6432 [2020-08-18 23:41:53,405 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 23:41:53,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6432 states. [2020-08-18 23:41:53,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6432 to 3238. [2020-08-18 23:41:53,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3238 states. [2020-08-18 23:41:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3238 states to 3238 states and 4743 transitions. [2020-08-18 23:41:53,585 INFO L78 Accepts]: Start accepts. Automaton has 3238 states and 4743 transitions. Word has length 142 [2020-08-18 23:41:53,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:53,585 INFO L479 AbstractCegarLoop]: Abstraction has 3238 states and 4743 transitions. [2020-08-18 23:41:53,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:41:53,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3238 states and 4743 transitions. [2020-08-18 23:41:53,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 23:41:53,594 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:53,594 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 23:41:53,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:41:53,596 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:53,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:53,596 INFO L82 PathProgramCache]: Analyzing trace with hash -2117388245, now seen corresponding path program 1 times [2020-08-18 23:41:53,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:53,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764414961] [2020-08-18 23:41:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:53,894 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:41:53,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:53,985 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 23:41:53,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764414961] [2020-08-18 23:41:53,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:53,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:41:53,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639322506] [2020-08-18 23:41:53,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:41:53,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:53,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:41:53,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:41:53,991 INFO L87 Difference]: Start difference. First operand 3238 states and 4743 transitions. Second operand 4 states. [2020-08-18 23:41:56,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:56,710 INFO L93 Difference]: Finished difference Result 8535 states and 12504 transitions. [2020-08-18 23:41:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 23:41:56,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-18 23:41:56,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:56,731 INFO L225 Difference]: With dead ends: 8535 [2020-08-18 23:41:56,732 INFO L226 Difference]: Without dead ends: 5581 [2020-08-18 23:41:56,738 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 23:41:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5581 states. [2020-08-18 23:41:56,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5581 to 5553. [2020-08-18 23:41:56,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5553 states. [2020-08-18 23:41:56,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 8032 transitions. [2020-08-18 23:41:56,982 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 8032 transitions. Word has length 143 [2020-08-18 23:41:56,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:56,983 INFO L479 AbstractCegarLoop]: Abstraction has 5553 states and 8032 transitions. [2020-08-18 23:41:56,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:41:56,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 8032 transitions. [2020-08-18 23:41:56,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 23:41:56,992 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:56,992 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 23:41:56,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:41:56,992 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:56,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:56,993 INFO L82 PathProgramCache]: Analyzing trace with hash 755501102, now seen corresponding path program 1 times [2020-08-18 23:41:56,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:56,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544681204] [2020-08-18 23:41:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:57,370 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:41:57,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:57,400 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 23:41:57,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544681204] [2020-08-18 23:41:57,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:57,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:41:57,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154989801] [2020-08-18 23:41:57,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:41:57,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:57,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:41:57,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:41:57,407 INFO L87 Difference]: Start difference. First operand 5553 states and 8032 transitions. Second operand 5 states. [2020-08-18 23:41:59,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:59,291 INFO L93 Difference]: Finished difference Result 11458 states and 16461 transitions. [2020-08-18 23:41:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:41:59,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-18 23:41:59,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:59,320 INFO L225 Difference]: With dead ends: 11458 [2020-08-18 23:41:59,321 INFO L226 Difference]: Without dead ends: 5789 [2020-08-18 23:41:59,332 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 23:41:59,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5789 states. [2020-08-18 23:41:59,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5789 to 5761. [2020-08-18 23:41:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5761 states. [2020-08-18 23:41:59,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 8216 transitions. [2020-08-18 23:41:59,641 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 8216 transitions. Word has length 143 [2020-08-18 23:41:59,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:59,641 INFO L479 AbstractCegarLoop]: Abstraction has 5761 states and 8216 transitions. [2020-08-18 23:41:59,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:41:59,642 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 8216 transitions. [2020-08-18 23:41:59,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 23:41:59,650 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:59,651 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 23:41:59,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:41:59,651 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:59,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:59,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1606177018, now seen corresponding path program 1 times [2020-08-18 23:41:59,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:59,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213168534] [2020-08-18 23:41:59,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:59,946 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:41:59,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:59,995 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 23:41:59,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213168534] [2020-08-18 23:41:59,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:59,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:41:59,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849166280] [2020-08-18 23:41:59,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:41:59,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:59,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:41:59,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:41:59,998 INFO L87 Difference]: Start difference. First operand 5761 states and 8216 transitions. Second operand 5 states. [2020-08-18 23:42:02,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:42:02,848 INFO L93 Difference]: Finished difference Result 8092 states and 11511 transitions. [2020-08-18 23:42:02,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:42:02,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-18 23:42:02,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:42:02,859 INFO L225 Difference]: With dead ends: 8092 [2020-08-18 23:42:02,859 INFO L226 Difference]: Without dead ends: 5789 [2020-08-18 23:42:02,864 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 23:42:02,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5789 states. [2020-08-18 23:42:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5789 to 5553. [2020-08-18 23:42:03,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5553 states. [2020-08-18 23:42:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 7958 transitions. [2020-08-18 23:42:03,134 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 7958 transitions. Word has length 143 [2020-08-18 23:42:03,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:42:03,134 INFO L479 AbstractCegarLoop]: Abstraction has 5553 states and 7958 transitions. [2020-08-18 23:42:03,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:42:03,134 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 7958 transitions. [2020-08-18 23:42:03,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-08-18 23:42:03,142 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:42:03,142 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 23:42:03,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:42:03,143 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:42:03,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:42:03,144 INFO L82 PathProgramCache]: Analyzing trace with hash 758328694, now seen corresponding path program 1 times [2020-08-18 23:42:03,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:42:03,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057277431] [2020-08-18 23:42:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:42:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:03,395 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:42:03,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:42:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:03,425 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 23:42:03,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057277431] [2020-08-18 23:42:03,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:42:03,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:42:03,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780590634] [2020-08-18 23:42:03,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:42:03,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:42:03,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:42:03,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:42:03,428 INFO L87 Difference]: Start difference. First operand 5553 states and 7958 transitions. Second operand 4 states. [2020-08-18 23:42:05,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:42:05,508 INFO L93 Difference]: Finished difference Result 13301 states and 19028 transitions. [2020-08-18 23:42:05,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 23:42:05,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-08-18 23:42:05,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:42:05,532 INFO L225 Difference]: With dead ends: 13301 [2020-08-18 23:42:05,532 INFO L226 Difference]: Without dead ends: 10998 [2020-08-18 23:42:05,540 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 23:42:05,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10998 states. [2020-08-18 23:42:05,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10998 to 5561. [2020-08-18 23:42:05,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5561 states. [2020-08-18 23:42:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5561 states to 5561 states and 7966 transitions. [2020-08-18 23:42:05,989 INFO L78 Accepts]: Start accepts. Automaton has 5561 states and 7966 transitions. Word has length 144 [2020-08-18 23:42:05,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:42:05,990 INFO L479 AbstractCegarLoop]: Abstraction has 5561 states and 7966 transitions. [2020-08-18 23:42:05,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:42:05,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5561 states and 7966 transitions. [2020-08-18 23:42:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-18 23:42:05,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:42:05,997 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 23:42:05,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:42:05,997 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:42:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:42:05,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1519114445, now seen corresponding path program 1 times [2020-08-18 23:42:05,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:42:05,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913033469] [2020-08-18 23:42:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:42:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:06,303 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:42:06,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:42:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:06,343 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 23:42:06,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913033469] [2020-08-18 23:42:06,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:42:06,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:42:06,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332187722] [2020-08-18 23:42:06,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:42:06,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:42:06,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:42:06,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:42:06,346 INFO L87 Difference]: Start difference. First operand 5561 states and 7966 transitions. Second operand 5 states. [2020-08-18 23:42:09,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:42:09,743 INFO L93 Difference]: Finished difference Result 16216 states and 23165 transitions. [2020-08-18 23:42:09,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:42:09,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-08-18 23:42:09,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:42:09,769 INFO L225 Difference]: With dead ends: 16216 [2020-08-18 23:42:09,769 INFO L226 Difference]: Without dead ends: 10702 [2020-08-18 23:42:09,780 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 23:42:09,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10702 states. [2020-08-18 23:42:10,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10702 to 10682. [2020-08-18 23:42:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10682 states. [2020-08-18 23:42:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10682 states to 10682 states and 15106 transitions. [2020-08-18 23:42:10,502 INFO L78 Accepts]: Start accepts. Automaton has 10682 states and 15106 transitions. Word has length 145 [2020-08-18 23:42:10,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:42:10,502 INFO L479 AbstractCegarLoop]: Abstraction has 10682 states and 15106 transitions. [2020-08-18 23:42:10,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:42:10,502 INFO L276 IsEmpty]: Start isEmpty. Operand 10682 states and 15106 transitions. [2020-08-18 23:42:10,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-18 23:42:10,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:42:10,514 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 23:42:10,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 23:42:10,514 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:42:10,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:42:10,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1320083815, now seen corresponding path program 1 times [2020-08-18 23:42:10,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:42:10,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550530343] [2020-08-18 23:42:10,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:42:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 23:42:10,574 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 23:42:10,574 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 23:42:10,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 23:42:10,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:42:10 BoogieIcfgContainer [2020-08-18 23:42:10,659 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:42:10,670 INFO L168 Benchmark]: Toolchain (without parser) took 40025.49 ms. Allocated memory was 138.9 MB in the beginning and 813.7 MB in the end (delta: 674.8 MB). Free memory was 98.8 MB in the beginning and 579.7 MB in the end (delta: -480.9 MB). Peak memory consumption was 193.9 MB. Max. memory is 7.1 GB. [2020-08-18 23:42:10,674 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 23:42:10,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1234.13 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 98.6 MB in the beginning and 161.2 MB in the end (delta: -62.7 MB). Peak memory consumption was 34.3 MB. Max. memory is 7.1 GB. [2020-08-18 23:42:10,676 INFO L168 Benchmark]: Boogie Preprocessor took 116.13 ms. Allocated memory is still 201.9 MB. Free memory was 161.2 MB in the beginning and 156.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-08-18 23:42:10,678 INFO L168 Benchmark]: RCFGBuilder took 1895.59 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 156.3 MB in the beginning and 109.5 MB in the end (delta: 46.8 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. [2020-08-18 23:42:10,678 INFO L168 Benchmark]: TraceAbstraction took 36773.75 ms. Allocated memory was 234.4 MB in the beginning and 813.7 MB in the end (delta: 579.3 MB). Free memory was 109.5 MB in the beginning and 579.7 MB in the end (delta: -470.2 MB). Peak memory consumption was 109.1 MB. Max. memory is 7.1 GB. [2020-08-18 23:42:10,687 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1234.13 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 98.6 MB in the beginning and 161.2 MB in the end (delta: -62.7 MB). Peak memory consumption was 34.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.13 ms. Allocated memory is still 201.9 MB. Free memory was 161.2 MB in the beginning and 156.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1895.59 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 156.3 MB in the beginning and 109.5 MB in the end (delta: 46.8 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36773.75 ms. Allocated memory was 234.4 MB in the beginning and 813.7 MB in the end (delta: 579.3 MB). Free memory was 109.5 MB in the beginning and 579.7 MB in the end (delta: -470.2 MB). Peak memory consumption was 109.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 814]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L15] msg_t nomsg = (msg_t )-1; [L16] port_t p12 = 0; [L17] char p12_old = '\x0'; [L18] char p12_new = '\x0'; [L19] _Bool ep12 = 0; [L20] port_t p13 = 0; [L21] char p13_old = '\x0'; [L22] char p13_new = '\x0'; [L23] _Bool ep13 = 0; [L24] port_t p21 = 0; [L25] char p21_old = '\x0'; [L26] char p21_new = '\x0'; [L27] _Bool ep21 = 0; [L28] port_t p23 = 0; [L29] char p23_old = '\x0'; [L30] char p23_new = '\x0'; [L31] _Bool ep23 = 0; [L32] port_t p31 = 0; [L33] char p31_old = '\x0'; [L34] char p31_new = '\x0'; [L35] _Bool ep31 = 0; [L36] port_t p32 = 0; [L37] char p32_old = '\x0'; [L38] char p32_new = '\x0'; [L39] _Bool ep32 = 0; [L40] char id1 = '\x0'; [L41] unsigned char r1 = '\x0'; [L42] char st1 = '\x0'; [L43] char nl1 = '\x0'; [L44] char m1 = '\x0'; [L45] char max1 = '\x0'; [L46] _Bool mode1 = 0; [L47] char id2 = '\x0'; [L48] unsigned char r2 = '\x0'; [L49] char st2 = '\x0'; [L50] char nl2 = '\x0'; [L51] char m2 = '\x0'; [L52] char max2 = '\x0'; [L53] _Bool mode2 = 0; [L54] char id3 = '\x0'; [L55] unsigned char r3 = '\x0'; [L56] char st3 = '\x0'; [L57] char nl3 = '\x0'; [L58] char m3 = '\x0'; [L59] char max3 = '\x0'; [L60] _Bool mode3 = 0; [L64] void (*nodes[3])() = { &node1, &node2, &node3 }; [L68] int __return_1718; [L69] int __return_1846; [L70] int __return_1964; [L71] int __return_2082; [L72] int __return_2816; [L73] int __return_2785; [L74] int __return_2726; [L75] int __return_2692; [L76] int __return_2315; [L77] int __return_2587; [L78] int __return_2553; [L79] int __return_2473; [L80] int __return_2205; [L83] int main__c1; [L84] int main__i2; [L85] main__c1 = 0 [L86] ep12 = __VERIFIER_nondet_bool() [L87] ep13 = __VERIFIER_nondet_bool() [L88] ep21 = __VERIFIER_nondet_bool() [L89] ep23 = __VERIFIER_nondet_bool() [L90] ep31 = __VERIFIER_nondet_bool() [L91] ep32 = __VERIFIER_nondet_bool() [L92] id1 = __VERIFIER_nondet_char() [L93] r1 = __VERIFIER_nondet_uchar() [L94] st1 = __VERIFIER_nondet_char() [L95] nl1 = __VERIFIER_nondet_char() [L96] m1 = __VERIFIER_nondet_char() [L97] max1 = __VERIFIER_nondet_char() [L98] mode1 = __VERIFIER_nondet_bool() [L99] id2 = __VERIFIER_nondet_char() [L100] r2 = __VERIFIER_nondet_uchar() [L101] st2 = __VERIFIER_nondet_char() [L102] nl2 = __VERIFIER_nondet_char() [L103] m2 = __VERIFIER_nondet_char() [L104] max2 = __VERIFIER_nondet_char() [L105] mode2 = __VERIFIER_nondet_bool() [L106] id3 = __VERIFIER_nondet_char() [L107] r3 = __VERIFIER_nondet_uchar() [L108] st3 = __VERIFIER_nondet_char() [L109] nl3 = __VERIFIER_nondet_char() [L110] m3 = __VERIFIER_nondet_char() [L111] max3 = __VERIFIER_nondet_char() [L112] mode3 = __VERIFIER_nondet_bool() [L114] _Bool init__r121; [L115] _Bool init__r131; [L116] _Bool init__r211; [L117] _Bool init__r231; [L118] _Bool init__r311; [L119] _Bool init__r321; [L120] _Bool init__r122; [L121] int init__tmp; [L122] _Bool init__r132; [L123] int init__tmp___0; [L124] _Bool init__r212; [L125] int init__tmp___1; [L126] _Bool init__r232; [L127] int init__tmp___2; [L128] _Bool init__r312; [L129] int init__tmp___3; [L130] _Bool init__r322; [L131] int init__tmp___4; [L132] int init__tmp___5; [L133] init__r121 = ep12 [L134] init__r131 = ep13 [L135] init__r211 = ep21 [L136] init__r231 = ep23 [L137] init__r311 = ep31 [L138] init__r321 = ep32 [L139] COND FALSE !(!(init__r121 == 0)) [L2956] COND FALSE !(!(init__r131 == 0)) [L2972] init__tmp = 0 [L143] init__r122 = (_Bool)init__tmp [L144] COND FALSE !(!(init__r131 == 0)) [L2933] COND FALSE !(!(init__r121 == 0)) [L2949] init__tmp___0 = 0 [L148] init__r132 = (_Bool)init__tmp___0 [L149] COND FALSE !(!(init__r211 == 0)) [L2910] COND FALSE !(!(init__r231 == 0)) [L2926] init__tmp___1 = 0 [L153] init__r212 = (_Bool)init__tmp___1 [L154] COND FALSE !(!(init__r231 == 0)) [L2887] COND FALSE !(!(init__r211 == 0)) [L2903] init__tmp___2 = 0 [L158] init__r232 = (_Bool)init__tmp___2 [L159] COND FALSE !(!(init__r311 == 0)) [L2864] COND FALSE !(!(init__r321 == 0)) [L2880] init__tmp___3 = 0 [L163] init__r312 = (_Bool)init__tmp___3 [L164] COND FALSE !(!(init__r321 == 0)) [L2841] COND FALSE !(!(init__r311 == 0)) [L2857] init__tmp___4 = 0 [L168] init__r322 = (_Bool)init__tmp___4 [L169] COND TRUE ((int)id1) != ((int)id2) [L171] COND TRUE ((int)id1) != ((int)id3) [L173] COND TRUE ((int)id2) != ((int)id3) [L175] COND TRUE ((int)id1) >= 0 [L177] COND TRUE ((int)id2) >= 0 [L179] COND TRUE ((int)id3) >= 0 [L181] COND TRUE ((int)r1) == 0 [L183] COND TRUE ((int)r2) == 0 [L185] COND TRUE ((int)r3) == 0 [L187] COND TRUE ((int)max1) == ((int)id1) [L189] COND TRUE ((int)max2) == ((int)id2) [L191] COND TRUE ((int)max3) == ((int)id3) [L193] COND TRUE ((int)st1) == 0 [L195] COND TRUE ((int)st2) == 0 [L197] COND TRUE ((int)st3) == 0 [L199] COND TRUE ((int)nl1) == 0 [L201] COND TRUE ((int)nl2) == 0 [L203] COND TRUE ((int)nl3) == 0 [L205] COND TRUE ((int)mode1) == 0 [L207] COND TRUE ((int)mode2) == 0 [L209] COND TRUE ((int)mode3) == 0 [L211] init__tmp___5 = 1 [L212] __return_1718 = init__tmp___5 [L213] main__i2 = __return_1718 [L214] COND TRUE main__i2 != 0 [L216] p12_old = nomsg [L217] p12_new = nomsg [L218] p13_old = nomsg [L219] p13_new = nomsg [L220] p21_old = nomsg [L221] p21_new = nomsg [L222] p23_old = nomsg [L223] p23_new = nomsg [L224] p31_old = nomsg [L225] p31_new = nomsg [L226] p32_old = nomsg [L227] p32_new = nomsg [L228] main__i2 = 0 [L230] COND FALSE !(!(mode1 == 0)) [L236] COND TRUE ((int)r1) < 2 [L238] COND FALSE !(!(ep12 == 0)) [L249] COND FALSE !(!(ep13 == 0)) [L260] mode1 = 1 [L262] COND FALSE !(!(mode2 == 0)) [L268] COND TRUE ((int)r2) < 2 [L270] COND FALSE !(!(ep21 == 0)) [L281] COND FALSE !(!(ep23 == 0)) [L292] mode2 = 1 [L294] COND FALSE !(!(mode3 == 0)) [L300] COND TRUE ((int)r3) < 2 [L302] COND FALSE !(!(ep31 == 0)) [L313] COND FALSE !(!(ep32 == 0)) [L324] mode3 = 1 [L325] p12_old = p12_new [L326] p12_new = nomsg [L327] p13_old = p13_new [L328] p13_new = nomsg [L329] p21_old = p21_new [L330] p21_new = nomsg [L331] p23_old = p23_new [L332] p23_new = nomsg [L333] p31_old = p31_new [L334] p31_new = nomsg [L335] p32_old = p32_new [L336] p32_new = nomsg [L338] int check__tmp; [L339] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L341] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L343] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L345] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L347] COND FALSE !(((int)r1) >= 2) [L353] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L355] COND TRUE ((int)r1) < 2 [L357] COND FALSE !(((int)r1) >= 2) [L363] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L365] COND TRUE ((int)r1) < 2 [L367] check__tmp = 1 [L368] __return_1846 = check__tmp [L369] main__c1 = __return_1846 [L371] _Bool __tmp_1; [L372] __tmp_1 = main__c1 [L373] _Bool assert__arg; [L374] assert__arg = __tmp_1 [L375] COND FALSE !(assert__arg == 0) [L382] COND TRUE !(mode1 == 0) [L384] COND FALSE !(r1 == 255) [L390] r1 = r1 + 1 [L391] COND FALSE !(!(ep21 == 0)) [L399] COND FALSE !(!(ep31 == 0)) [L407] COND FALSE !(((int)r1) == 2) [L413] mode1 = 0 [L415] COND TRUE !(mode2 == 0) [L417] COND FALSE !(r2 == 255) [L423] r2 = r2 + 1 [L424] COND FALSE !(!(ep12 == 0)) [L432] COND FALSE !(!(ep32 == 0)) [L440] COND FALSE !(((int)r2) == 2) [L446] mode2 = 0 [L448] COND TRUE !(mode3 == 0) [L450] COND FALSE !(r3 == 255) [L456] r3 = r3 + 1 [L457] COND FALSE !(!(ep13 == 0)) [L465] COND FALSE !(!(ep23 == 0)) [L473] COND FALSE !(((int)r3) == 2) [L479] mode3 = 0 [L480] p12_old = p12_new [L481] p12_new = nomsg [L482] p13_old = p13_new [L483] p13_new = nomsg [L484] p21_old = p21_new [L485] p21_new = nomsg [L486] p23_old = p23_new [L487] p23_new = nomsg [L488] p31_old = p31_new [L489] p31_new = nomsg [L490] p32_old = p32_new [L491] p32_new = nomsg [L493] int check__tmp; [L494] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L496] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L498] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L500] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L502] COND FALSE !(((int)r1) >= 2) [L508] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L510] COND TRUE ((int)r1) < 2 [L512] COND FALSE !(((int)r1) >= 2) [L518] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L520] COND TRUE ((int)r1) < 2 [L522] check__tmp = 1 [L523] __return_1964 = check__tmp [L524] main__c1 = __return_1964 [L526] _Bool __tmp_2; [L527] __tmp_2 = main__c1 [L528] _Bool assert__arg; [L529] assert__arg = __tmp_2 [L530] COND FALSE !(assert__arg == 0) [L537] COND FALSE !(!(mode1 == 0)) [L543] COND TRUE ((int)r1) < 2 [L545] COND FALSE !(!(ep12 == 0)) [L556] COND FALSE !(!(ep13 == 0)) [L567] mode1 = 1 [L569] COND FALSE !(!(mode2 == 0)) [L575] COND TRUE ((int)r2) < 2 [L577] COND FALSE !(!(ep21 == 0)) [L588] COND FALSE !(!(ep23 == 0)) [L599] mode2 = 1 [L601] COND FALSE !(!(mode3 == 0)) [L607] COND TRUE ((int)r3) < 2 [L609] COND FALSE !(!(ep31 == 0)) [L620] COND FALSE !(!(ep32 == 0)) [L631] mode3 = 1 [L632] p12_old = p12_new [L633] p12_new = nomsg [L634] p13_old = p13_new [L635] p13_new = nomsg [L636] p21_old = p21_new [L637] p21_new = nomsg [L638] p23_old = p23_new [L639] p23_new = nomsg [L640] p31_old = p31_new [L641] p31_new = nomsg [L642] p32_old = p32_new [L643] p32_new = nomsg [L645] int check__tmp; [L646] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L648] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L650] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L652] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L654] COND FALSE !(((int)r1) >= 2) [L660] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L662] COND TRUE ((int)r1) < 2 [L664] COND FALSE !(((int)r1) >= 2) [L670] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L672] COND TRUE ((int)r1) < 2 [L674] check__tmp = 1 [L675] __return_2082 = check__tmp [L676] main__c1 = __return_2082 [L678] _Bool __tmp_3; [L679] __tmp_3 = main__c1 [L680] _Bool assert__arg; [L681] assert__arg = __tmp_3 [L682] COND FALSE !(assert__arg == 0) [L689] COND TRUE !(mode1 == 0) [L691] COND FALSE !(r1 == 255) [L697] r1 = r1 + 1 [L698] COND FALSE !(!(ep21 == 0)) [L706] COND FALSE !(!(ep31 == 0)) [L714] COND TRUE ((int)r1) == 2 [L716] COND TRUE ((int)max1) == ((int)id1) [L718] st1 = 1 [L719] mode1 = 0 [L721] COND TRUE !(mode2 == 0) [L723] COND FALSE !(r2 == 255) [L729] r2 = r2 + 1 [L730] COND FALSE !(!(ep12 == 0)) [L738] COND FALSE !(!(ep32 == 0)) [L746] COND TRUE ((int)r2) == 2 [L748] COND TRUE ((int)max2) == ((int)id2) [L750] st2 = 1 [L751] mode2 = 0 [L753] COND TRUE !(mode3 == 0) [L755] COND FALSE !(r3 == 255) [L761] r3 = r3 + 1 [L762] COND FALSE !(!(ep13 == 0)) [L770] COND FALSE !(!(ep23 == 0)) [L778] COND TRUE ((int)r3) == 2 [L780] COND TRUE ((int)max3) == ((int)id3) [L782] st3 = 1 [L783] mode3 = 0 [L784] p12_old = p12_new [L785] p12_new = nomsg [L786] p13_old = p13_new [L787] p13_new = nomsg [L788] p21_old = p21_new [L789] p21_new = nomsg [L790] p23_old = p23_new [L791] p23_new = nomsg [L792] p31_old = p31_new [L793] p31_new = nomsg [L794] p32_old = p32_new [L795] p32_new = nomsg [L797] int check__tmp; [L798] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L804] check__tmp = 0 [L805] __return_2816 = check__tmp [L806] main__c1 = __return_2816 [L808] _Bool __tmp_4; [L809] __tmp_4 = main__c1 [L810] _Bool assert__arg; [L811] assert__arg = __tmp_4 [L812] COND TRUE assert__arg == 0 [L814] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 391 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.6s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 28.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8969 SDtfs, 8666 SDslu, 5494 SDs, 0 SdLazy, 9500 SolverSat, 100 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10682occurred 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: 2.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 10677 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 1703 NumberOfCodeBlocks, 1703 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1547 ConstructedInterpolants, 0 QuantifiedInterpolants, 792329 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...