/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 false -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 15:38:09,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:38:09,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:38:09,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:38:09,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:38:09,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:38:09,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:38:09,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:38:09,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:38:09,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:38:09,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:38:09,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:38:09,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:38:09,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:38:09,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:38:09,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:38:09,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:38:09,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:38:09,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:38:09,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:38:09,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:38:09,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:38:09,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:38:09,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:38:09,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:38:09,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:38:09,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:38:09,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:38:09,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:38:09,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:38:09,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:38:09,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:38:09,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:38:09,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:38:09,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:38:09,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:38:09,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:38:09,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:38:09,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:38:09,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:38:09,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:38:09,484 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 15:38:09,508 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:38:09,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:38:09,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:38:09,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:38:09,513 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:38:09,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:38:09,513 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:38:09,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:38:09,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:38:09,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:38:09,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:38:09,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:38:09,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:38:09,515 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:38:09,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:38:09,515 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:38:09,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:38:09,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:38:09,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:38:09,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:38:09,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:38:09,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:38:09,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:38:09,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:38:09,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:38:09,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:38:09,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:38:09,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:38:09,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:38:09,522 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 -> false [2020-08-18 15:38:09,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:38:09,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:38:09,871 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:38:09,873 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:38:09,873 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:38:09,874 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-18 15:38:09,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7a75a040/08ea93f38ed9495bb24fea20d9f43f29/FLAG493adb476 [2020-08-18 15:38:10,533 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:38:10,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-18 15:38:10,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7a75a040/08ea93f38ed9495bb24fea20d9f43f29/FLAG493adb476 [2020-08-18 15:38:10,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7a75a040/08ea93f38ed9495bb24fea20d9f43f29 [2020-08-18 15:38:10,831 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:38:10,832 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:38:10,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:38:10,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:38:10,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:38:10,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:38:10" (1/1) ... [2020-08-18 15:38:10,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332fc18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:38:10, skipping insertion in model container [2020-08-18 15:38:10,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:38:10" (1/1) ... [2020-08-18 15:38:10,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:38:10,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:38:11,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:38:11,521 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:38:11,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:38:11,982 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:38:11,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:38:11 WrapperNode [2020-08-18 15:38:11,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:38:11,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:38:11,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:38:11,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:38:11,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:38:11" (1/1) ... [2020-08-18 15:38:11,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:38:11" (1/1) ... [2020-08-18 15:38:12,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:38:11" (1/1) ... [2020-08-18 15:38:12,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:38:11" (1/1) ... [2020-08-18 15:38:12,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:38:11" (1/1) ... [2020-08-18 15:38:12,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:38:11" (1/1) ... [2020-08-18 15:38:12,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:38:11" (1/1) ... [2020-08-18 15:38:12,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:38:12,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:38:12,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:38:12,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:38:12,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:38:11" (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 15:38:12,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:38:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:38:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 15:38:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:38:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:38:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 15:38:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-18 15:38:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 15:38:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 15:38:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 15:38:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 15:38:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 15:38:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 15:38:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-18 15:38:12,178 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-18 15:38:12,178 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-18 15:38:12,178 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 15:38:12,178 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 15:38:12,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:38:12,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:38:12,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:38:13,886 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:38:13,887 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 15:38:13,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:38:13 BoogieIcfgContainer [2020-08-18 15:38:13,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:38:13,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:38:13,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:38:13,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:38:13,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:38:10" (1/3) ... [2020-08-18 15:38:13,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fde816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:38:13, skipping insertion in model container [2020-08-18 15:38:13,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:38:11" (2/3) ... [2020-08-18 15:38:13,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fde816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:38:13, skipping insertion in model container [2020-08-18 15:38:13,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:38:13" (3/3) ... [2020-08-18 15:38:13,912 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-18 15:38:13,922 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:38:13,930 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-18 15:38:13,944 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-18 15:38:13,972 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:38:13,972 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:38:13,972 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:38:13,972 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:38:13,972 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:38:13,973 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:38:13,973 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:38:13,973 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:38:14,001 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states. [2020-08-18 15:38:14,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 15:38:14,018 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:38:14,020 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 15:38:14,020 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:38:14,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:38:14,027 INFO L82 PathProgramCache]: Analyzing trace with hash -731921028, now seen corresponding path program 1 times [2020-08-18 15:38:14,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:38:14,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335878327] [2020-08-18 15:38:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:38:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:14,997 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:38:15,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:38:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:15,109 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 15:38:15,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335878327] [2020-08-18 15:38:15,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:38:15,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:38:15,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354881499] [2020-08-18 15:38:15,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:38:15,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:38:15,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:38:15,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:38:15,145 INFO L87 Difference]: Start difference. First operand 387 states. Second operand 4 states. [2020-08-18 15:38:15,420 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:38:17,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:38:17,758 INFO L93 Difference]: Finished difference Result 708 states and 1251 transitions. [2020-08-18 15:38:17,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:38:17,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-08-18 15:38:17,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:38:17,782 INFO L225 Difference]: With dead ends: 708 [2020-08-18 15:38:17,782 INFO L226 Difference]: Without dead ends: 553 [2020-08-18 15:38:17,787 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 15:38:17,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-08-18 15:38:17,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 551. [2020-08-18 15:38:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-08-18 15:38:17,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 806 transitions. [2020-08-18 15:38:17,883 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 806 transitions. Word has length 139 [2020-08-18 15:38:17,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:38:17,884 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 806 transitions. [2020-08-18 15:38:17,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:38:17,884 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 806 transitions. [2020-08-18 15:38:17,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 15:38:17,894 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:38:17,895 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 15:38:17,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:38:17,895 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:38:17,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:38:17,899 INFO L82 PathProgramCache]: Analyzing trace with hash 807798716, now seen corresponding path program 1 times [2020-08-18 15:38:17,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:38:17,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681799533] [2020-08-18 15:38:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:38:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:18,319 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:38:18,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:38:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:18,358 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 15:38:18,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681799533] [2020-08-18 15:38:18,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:38:18,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:38:18,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810797529] [2020-08-18 15:38:18,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:38:18,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:38:18,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:38:18,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:38:18,362 INFO L87 Difference]: Start difference. First operand 551 states and 806 transitions. Second operand 4 states. [2020-08-18 15:38:18,576 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:38:20,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:38:20,591 INFO L93 Difference]: Finished difference Result 1108 states and 1675 transitions. [2020-08-18 15:38:20,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:38:20,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-08-18 15:38:20,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:38:20,601 INFO L225 Difference]: With dead ends: 1108 [2020-08-18 15:38:20,601 INFO L226 Difference]: Without dead ends: 891 [2020-08-18 15:38:20,604 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 15:38:20,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-18 15:38:20,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 889. [2020-08-18 15:38:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-08-18 15:38:20,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1322 transitions. [2020-08-18 15:38:20,656 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1322 transitions. Word has length 139 [2020-08-18 15:38:20,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:38:20,657 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1322 transitions. [2020-08-18 15:38:20,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:38:20,657 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1322 transitions. [2020-08-18 15:38:20,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 15:38:20,661 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:38:20,661 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 15:38:20,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:38:20,662 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:38:20,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:38:20,662 INFO L82 PathProgramCache]: Analyzing trace with hash -332552132, now seen corresponding path program 1 times [2020-08-18 15:38:20,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:38:20,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774039410] [2020-08-18 15:38:20,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:38:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:21,062 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:38:21,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:38:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:21,132 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 15:38:21,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774039410] [2020-08-18 15:38:21,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:38:21,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:38:21,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644325104] [2020-08-18 15:38:21,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:38:21,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:38:21,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:38:21,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:38:21,136 INFO L87 Difference]: Start difference. First operand 889 states and 1322 transitions. Second operand 5 states. [2020-08-18 15:38:24,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:38:24,100 INFO L93 Difference]: Finished difference Result 2594 states and 3851 transitions. [2020-08-18 15:38:24,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:38:24,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-08-18 15:38:24,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:38:24,110 INFO L225 Difference]: With dead ends: 2594 [2020-08-18 15:38:24,110 INFO L226 Difference]: Without dead ends: 1718 [2020-08-18 15:38:24,114 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 15:38:24,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2020-08-18 15:38:24,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1690. [2020-08-18 15:38:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-08-18 15:38:24,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2499 transitions. [2020-08-18 15:38:24,211 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2499 transitions. Word has length 139 [2020-08-18 15:38:24,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:38:24,212 INFO L479 AbstractCegarLoop]: Abstraction has 1690 states and 2499 transitions. [2020-08-18 15:38:24,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:38:24,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2499 transitions. [2020-08-18 15:38:24,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-08-18 15:38:24,218 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:38:24,218 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 15:38:24,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:38:24,219 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:38:24,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:38:24,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1153443372, now seen corresponding path program 1 times [2020-08-18 15:38:24,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:38:24,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553613841] [2020-08-18 15:38:24,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:38:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:24,559 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:38:24,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:38:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:24,599 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 15:38:24,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553613841] [2020-08-18 15:38:24,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:38:24,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:38:24,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27277104] [2020-08-18 15:38:24,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:38:24,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:38:24,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:38:24,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:38:24,602 INFO L87 Difference]: Start difference. First operand 1690 states and 2499 transitions. Second operand 4 states. [2020-08-18 15:38:26,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:38:26,446 INFO L93 Difference]: Finished difference Result 5024 states and 7427 transitions. [2020-08-18 15:38:26,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 15:38:26,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-08-18 15:38:26,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:38:26,467 INFO L225 Difference]: With dead ends: 5024 [2020-08-18 15:38:26,468 INFO L226 Difference]: Without dead ends: 3366 [2020-08-18 15:38:26,472 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 15:38:26,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2020-08-18 15:38:26,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 1692. [2020-08-18 15:38:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1692 states. [2020-08-18 15:38:26,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2501 transitions. [2020-08-18 15:38:26,585 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2501 transitions. Word has length 140 [2020-08-18 15:38:26,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:38:26,585 INFO L479 AbstractCegarLoop]: Abstraction has 1692 states and 2501 transitions. [2020-08-18 15:38:26,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:38:26,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2501 transitions. [2020-08-18 15:38:26,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-18 15:38:26,589 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:38:26,589 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 15:38:26,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:38:26,590 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:38:26,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:38:26,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2018819803, now seen corresponding path program 1 times [2020-08-18 15:38:26,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:38:26,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278259336] [2020-08-18 15:38:26,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:38:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:27,015 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:38:27,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:38:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:27,089 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 15:38:27,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278259336] [2020-08-18 15:38:27,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:38:27,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:38:27,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470371975] [2020-08-18 15:38:27,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:38:27,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:38:27,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:38:27,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:38:27,092 INFO L87 Difference]: Start difference. First operand 1692 states and 2501 transitions. Second operand 5 states. [2020-08-18 15:38:29,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:38:29,405 INFO L93 Difference]: Finished difference Result 4920 states and 7255 transitions. [2020-08-18 15:38:29,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:38:29,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-08-18 15:38:29,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:38:29,422 INFO L225 Difference]: With dead ends: 4920 [2020-08-18 15:38:29,422 INFO L226 Difference]: Without dead ends: 3262 [2020-08-18 15:38:29,426 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 15:38:29,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2020-08-18 15:38:29,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3234. [2020-08-18 15:38:29,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3234 states. [2020-08-18 15:38:29,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4739 transitions. [2020-08-18 15:38:29,591 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4739 transitions. Word has length 141 [2020-08-18 15:38:29,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:38:29,591 INFO L479 AbstractCegarLoop]: Abstraction has 3234 states and 4739 transitions. [2020-08-18 15:38:29,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:38:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4739 transitions. [2020-08-18 15:38:29,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-18 15:38:29,599 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:38:29,600 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 15:38:29,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:38:29,600 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:38:29,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:38:29,601 INFO L82 PathProgramCache]: Analyzing trace with hash -551640981, now seen corresponding path program 1 times [2020-08-18 15:38:29,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:38:29,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060710799] [2020-08-18 15:38:29,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:38:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:29,853 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:38:29,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:38:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:29,887 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 15:38:29,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060710799] [2020-08-18 15:38:29,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:38:29,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:38:29,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802096911] [2020-08-18 15:38:29,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:38:29,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:38:29,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:38:29,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:38:29,900 INFO L87 Difference]: Start difference. First operand 3234 states and 4739 transitions. Second operand 4 states. [2020-08-18 15:38:33,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:38:33,252 INFO L93 Difference]: Finished difference Result 9618 states and 14089 transitions. [2020-08-18 15:38:33,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 15:38:33,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-08-18 15:38:33,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:38:33,279 INFO L225 Difference]: With dead ends: 9618 [2020-08-18 15:38:33,280 INFO L226 Difference]: Without dead ends: 6432 [2020-08-18 15:38:33,286 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 15:38:33,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6432 states. [2020-08-18 15:38:33,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6432 to 3238. [2020-08-18 15:38:33,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3238 states. [2020-08-18 15:38:33,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3238 states to 3238 states and 4743 transitions. [2020-08-18 15:38:33,470 INFO L78 Accepts]: Start accepts. Automaton has 3238 states and 4743 transitions. Word has length 142 [2020-08-18 15:38:33,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:38:33,471 INFO L479 AbstractCegarLoop]: Abstraction has 3238 states and 4743 transitions. [2020-08-18 15:38:33,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:38:33,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3238 states and 4743 transitions. [2020-08-18 15:38:33,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 15:38:33,478 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:38:33,478 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 15:38:33,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:38:33,480 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:38:33,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:38:33,481 INFO L82 PathProgramCache]: Analyzing trace with hash -2117388245, now seen corresponding path program 1 times [2020-08-18 15:38:33,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:38:33,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31536260] [2020-08-18 15:38:33,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:38:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:33,775 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:38:33,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:38:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:33,813 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 15:38:33,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31536260] [2020-08-18 15:38:33,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:38:33,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:38:33,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916641341] [2020-08-18 15:38:33,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:38:33,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:38:33,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:38:33,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:38:33,816 INFO L87 Difference]: Start difference. First operand 3238 states and 4743 transitions. Second operand 4 states. [2020-08-18 15:38:36,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:38:36,675 INFO L93 Difference]: Finished difference Result 8535 states and 12504 transitions. [2020-08-18 15:38:36,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 15:38:36,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-18 15:38:36,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:38:36,699 INFO L225 Difference]: With dead ends: 8535 [2020-08-18 15:38:36,699 INFO L226 Difference]: Without dead ends: 5581 [2020-08-18 15:38:36,706 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 15:38:36,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5581 states. [2020-08-18 15:38:36,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5581 to 5553. [2020-08-18 15:38:36,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5553 states. [2020-08-18 15:38:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 8032 transitions. [2020-08-18 15:38:37,003 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 8032 transitions. Word has length 143 [2020-08-18 15:38:37,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:38:37,004 INFO L479 AbstractCegarLoop]: Abstraction has 5553 states and 8032 transitions. [2020-08-18 15:38:37,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:38:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 8032 transitions. [2020-08-18 15:38:37,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 15:38:37,012 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:38:37,012 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 15:38:37,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 15:38:37,013 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:38:37,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:38:37,013 INFO L82 PathProgramCache]: Analyzing trace with hash 755501102, now seen corresponding path program 1 times [2020-08-18 15:38:37,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:38:37,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760380881] [2020-08-18 15:38:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:38:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:37,377 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:38:37,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:38:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:37,434 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 15:38:37,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760380881] [2020-08-18 15:38:37,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:38:37,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:38:37,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569348633] [2020-08-18 15:38:37,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:38:37,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:38:37,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:38:37,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:38:37,444 INFO L87 Difference]: Start difference. First operand 5553 states and 8032 transitions. Second operand 5 states. [2020-08-18 15:38:39,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:38:39,356 INFO L93 Difference]: Finished difference Result 11458 states and 16461 transitions. [2020-08-18 15:38:39,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:38:39,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-18 15:38:39,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:38:39,385 INFO L225 Difference]: With dead ends: 11458 [2020-08-18 15:38:39,385 INFO L226 Difference]: Without dead ends: 5789 [2020-08-18 15:38:39,396 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 15:38:39,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5789 states. [2020-08-18 15:38:39,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5789 to 5761. [2020-08-18 15:38:39,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5761 states. [2020-08-18 15:38:39,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 8216 transitions. [2020-08-18 15:38:39,635 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 8216 transitions. Word has length 143 [2020-08-18 15:38:39,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:38:39,635 INFO L479 AbstractCegarLoop]: Abstraction has 5761 states and 8216 transitions. [2020-08-18 15:38:39,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:38:39,635 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 8216 transitions. [2020-08-18 15:38:39,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 15:38:39,644 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:38:39,644 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 15:38:39,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 15:38:39,644 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:38:39,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:38:39,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1606177018, now seen corresponding path program 1 times [2020-08-18 15:38:39,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:38:39,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825264615] [2020-08-18 15:38:39,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:38:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:39,951 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:38:39,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:38:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:40,001 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 15:38:40,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825264615] [2020-08-18 15:38:40,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:38:40,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:38:40,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360437607] [2020-08-18 15:38:40,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:38:40,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:38:40,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:38:40,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:38:40,004 INFO L87 Difference]: Start difference. First operand 5761 states and 8216 transitions. Second operand 5 states. [2020-08-18 15:38:42,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:38:42,780 INFO L93 Difference]: Finished difference Result 8092 states and 11511 transitions. [2020-08-18 15:38:42,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:38:42,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-18 15:38:42,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:38:42,804 INFO L225 Difference]: With dead ends: 8092 [2020-08-18 15:38:42,805 INFO L226 Difference]: Without dead ends: 5789 [2020-08-18 15:38:42,809 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 15:38:42,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5789 states. [2020-08-18 15:38:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5789 to 5553. [2020-08-18 15:38:42,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5553 states. [2020-08-18 15:38:43,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 7958 transitions. [2020-08-18 15:38:43,002 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 7958 transitions. Word has length 143 [2020-08-18 15:38:43,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:38:43,002 INFO L479 AbstractCegarLoop]: Abstraction has 5553 states and 7958 transitions. [2020-08-18 15:38:43,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:38:43,002 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 7958 transitions. [2020-08-18 15:38:43,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-08-18 15:38:43,009 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:38:43,009 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 15:38:43,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 15:38:43,010 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:38:43,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:38:43,010 INFO L82 PathProgramCache]: Analyzing trace with hash 758328694, now seen corresponding path program 1 times [2020-08-18 15:38:43,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:38:43,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869456245] [2020-08-18 15:38:43,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:38:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:43,256 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:38:43,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:38:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:38:43,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869456245] [2020-08-18 15:38:43,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:38:43,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:38:43,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980653155] [2020-08-18 15:38:43,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:38:43,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:38:43,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:38:43,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:38:43,291 INFO L87 Difference]: Start difference. First operand 5553 states and 7958 transitions. Second operand 4 states. [2020-08-18 15:38:45,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:38:45,376 INFO L93 Difference]: Finished difference Result 13301 states and 19028 transitions. [2020-08-18 15:38:45,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 15:38:45,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-08-18 15:38:45,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:38:45,399 INFO L225 Difference]: With dead ends: 13301 [2020-08-18 15:38:45,400 INFO L226 Difference]: Without dead ends: 10998 [2020-08-18 15:38:45,406 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 15:38:45,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10998 states. [2020-08-18 15:38:45,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10998 to 5561. [2020-08-18 15:38:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5561 states. [2020-08-18 15:38:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5561 states to 5561 states and 7966 transitions. [2020-08-18 15:38:45,742 INFO L78 Accepts]: Start accepts. Automaton has 5561 states and 7966 transitions. Word has length 144 [2020-08-18 15:38:45,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:38:45,742 INFO L479 AbstractCegarLoop]: Abstraction has 5561 states and 7966 transitions. [2020-08-18 15:38:45,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:38:45,743 INFO L276 IsEmpty]: Start isEmpty. Operand 5561 states and 7966 transitions. [2020-08-18 15:38:45,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-18 15:38:45,749 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:38:45,750 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 15:38:45,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 15:38:45,750 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:38:45,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:38:45,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1519114445, now seen corresponding path program 1 times [2020-08-18 15:38:45,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:38:45,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275869126] [2020-08-18 15:38:45,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:38:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:46,108 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:38:46,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:38:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:38:46,149 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 15:38:46,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275869126] [2020-08-18 15:38:46,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:38:46,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:38:46,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498256854] [2020-08-18 15:38:46,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:38:46,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:38:46,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:38:46,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:38:46,151 INFO L87 Difference]: Start difference. First operand 5561 states and 7966 transitions. Second operand 5 states. [2020-08-18 15:38:49,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:38:49,478 INFO L93 Difference]: Finished difference Result 16216 states and 23165 transitions. [2020-08-18 15:38:49,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:38:49,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-08-18 15:38:49,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:38:49,501 INFO L225 Difference]: With dead ends: 16216 [2020-08-18 15:38:49,501 INFO L226 Difference]: Without dead ends: 10702 [2020-08-18 15:38:49,510 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 15:38:49,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10702 states. [2020-08-18 15:38:50,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10702 to 10682. [2020-08-18 15:38:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10682 states. [2020-08-18 15:38:50,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10682 states to 10682 states and 15106 transitions. [2020-08-18 15:38:50,122 INFO L78 Accepts]: Start accepts. Automaton has 10682 states and 15106 transitions. Word has length 145 [2020-08-18 15:38:50,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:38:50,122 INFO L479 AbstractCegarLoop]: Abstraction has 10682 states and 15106 transitions. [2020-08-18 15:38:50,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:38:50,122 INFO L276 IsEmpty]: Start isEmpty. Operand 10682 states and 15106 transitions. [2020-08-18 15:38:50,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-18 15:38:50,131 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:38:50,131 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 15:38:50,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 15:38:50,132 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:38:50,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:38:50,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1320083815, now seen corresponding path program 1 times [2020-08-18 15:38:50,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:38:50,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454448569] [2020-08-18 15:38:50,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:38:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 15:38:50,191 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 15:38:50,191 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 15:38:50,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 15:38:50,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:38:50 BoogieIcfgContainer [2020-08-18 15:38:50,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:38:50,253 INFO L168 Benchmark]: Toolchain (without parser) took 39418.42 ms. Allocated memory was 141.0 MB in the beginning and 762.3 MB in the end (delta: 621.3 MB). Free memory was 102.3 MB in the beginning and 622.3 MB in the end (delta: -519.9 MB). Peak memory consumption was 101.3 MB. Max. memory is 7.1 GB. [2020-08-18 15:38:50,256 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.9 kB). Peak memory consumption was 419.9 kB. Max. memory is 7.1 GB. [2020-08-18 15:38:50,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1149.41 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 160.1 MB in the end (delta: -58.2 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2020-08-18 15:38:50,257 INFO L168 Benchmark]: Boogie Preprocessor took 119.25 ms. Allocated memory is still 203.9 MB. Free memory was 160.1 MB in the beginning and 155.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-08-18 15:38:50,262 INFO L168 Benchmark]: RCFGBuilder took 1797.43 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 154.2 MB in the beginning and 103.1 MB in the end (delta: 51.1 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-08-18 15:38:50,264 INFO L168 Benchmark]: TraceAbstraction took 36346.31 ms. Allocated memory was 235.4 MB in the beginning and 762.3 MB in the end (delta: 526.9 MB). Free memory was 103.1 MB in the beginning and 622.3 MB in the end (delta: -519.2 MB). Peak memory consumption was 7.7 MB. Max. memory is 7.1 GB. [2020-08-18 15:38:50,271 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.9 kB). Peak memory consumption was 419.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1149.41 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 160.1 MB in the end (delta: -58.2 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.25 ms. Allocated memory is still 203.9 MB. Free memory was 160.1 MB in the beginning and 155.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1797.43 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 154.2 MB in the beginning and 103.1 MB in the end (delta: 51.1 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36346.31 ms. Allocated memory was 235.4 MB in the beginning and 762.3 MB in the end (delta: 526.9 MB). Free memory was 103.1 MB in the beginning and 622.3 MB in the end (delta: -519.2 MB). Peak memory consumption was 7.7 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: 36.2s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 28.6s, 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, 21.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s 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: 2.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 10677 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.4s 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...