/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:14:28,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:14:28,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:14:28,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:14:28,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:14:28,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:14:28,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:14:28,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:14:28,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:14:28,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:14:28,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:14:28,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:14:28,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:14:28,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:14:28,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:14:28,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:14:28,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:14:28,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:14:28,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:14:28,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:14:28,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:14:28,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:14:28,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:14:28,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:14:28,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:14:28,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:14:28,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:14:28,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:14:28,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:14:28,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:14:28,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:14:28,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:14:28,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:14:28,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:14:28,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:14:28,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:14:28,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:14:28,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:14:28,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:14:28,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:14:28,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:14:28,120 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 17:14:28,157 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:14:28,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:14:28,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:14:28,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:14:28,159 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:14:28,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:14:28,160 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:14:28,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:14:28,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:14:28,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:14:28,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:14:28,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:14:28,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:14:28,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:14:28,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:14:28,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:14:28,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:14:28,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:14:28,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:14:28,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:14:28,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:14:28,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:14:28,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:14:28,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:14:28,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:14:28,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:14:28,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:14:28,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:14:28,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:14:28,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 17:14:28,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:14:28,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:14:28,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:14:28,473 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:14:28,474 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:14:28,474 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-18 17:14:28,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b0940c67/af5a3eda58414e4abf7b9667a2ced8bd/FLAG45e130de7 [2020-08-18 17:14:29,090 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:14:29,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-18 17:14:29,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b0940c67/af5a3eda58414e4abf7b9667a2ced8bd/FLAG45e130de7 [2020-08-18 17:14:29,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b0940c67/af5a3eda58414e4abf7b9667a2ced8bd [2020-08-18 17:14:29,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:14:29,355 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:14:29,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:14:29,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:14:29,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:14:29,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:14:29" (1/1) ... [2020-08-18 17:14:29,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8831ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:29, skipping insertion in model container [2020-08-18 17:14:29,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:14:29" (1/1) ... [2020-08-18 17:14:29,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:14:29,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:14:29,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:14:29,983 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:14:30,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:14:30,597 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:14:30,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:30 WrapperNode [2020-08-18 17:14:30,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:14:30,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:14:30,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:14:30,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:14:30,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:30" (1/1) ... [2020-08-18 17:14:30,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:30" (1/1) ... [2020-08-18 17:14:30,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:30" (1/1) ... [2020-08-18 17:14:30,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:30" (1/1) ... [2020-08-18 17:14:30,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:30" (1/1) ... [2020-08-18 17:14:30,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:30" (1/1) ... [2020-08-18 17:14:30,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:30" (1/1) ... [2020-08-18 17:14:30,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:14:30,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:14:30,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:14:30,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:14:30,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:30" (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 17:14:30,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:14:30,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:14:30,812 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 17:14:30,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:14:30,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:14:30,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 17:14:30,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 17:14:30,814 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 17:14:30,814 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 17:14:30,815 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 17:14:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 17:14:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 17:14:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-18 17:14:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-18 17:14:30,817 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-18 17:14:30,817 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 17:14:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 17:14:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:14:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:14:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:14:32,382 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:14:32,382 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 17:14:32,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:14:32 BoogieIcfgContainer [2020-08-18 17:14:32,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:14:32,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:14:32,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:14:32,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:14:32,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:14:29" (1/3) ... [2020-08-18 17:14:32,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af5c0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:14:32, skipping insertion in model container [2020-08-18 17:14:32,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:14:30" (2/3) ... [2020-08-18 17:14:32,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af5c0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:14:32, skipping insertion in model container [2020-08-18 17:14:32,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:14:32" (3/3) ... [2020-08-18 17:14:32,398 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-18 17:14:32,407 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:14:32,415 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-18 17:14:32,431 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-18 17:14:32,460 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:14:32,460 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:14:32,460 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:14:32,460 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:14:32,461 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:14:32,461 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:14:32,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:14:32,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:14:32,494 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states. [2020-08-18 17:14:32,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 17:14:32,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:32,513 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] [2020-08-18 17:14:32,513 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:32,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:32,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1152927299, now seen corresponding path program 1 times [2020-08-18 17:14:32,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:32,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844646315] [2020-08-18 17:14:32,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:33,470 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:14:33,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:33,526 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 17:14:33,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844646315] [2020-08-18 17:14:33,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:14:33,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:14:33,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854657103] [2020-08-18 17:14:33,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:14:33,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:33,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:14:33,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:14:33,554 INFO L87 Difference]: Start difference. First operand 376 states. Second operand 4 states. [2020-08-18 17:14:33,881 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:14:36,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:36,391 INFO L93 Difference]: Finished difference Result 684 states and 1212 transitions. [2020-08-18 17:14:36,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:14:36,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-08-18 17:14:36,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:36,426 INFO L225 Difference]: With dead ends: 684 [2020-08-18 17:14:36,426 INFO L226 Difference]: Without dead ends: 544 [2020-08-18 17:14:36,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:14:36,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-08-18 17:14:36,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 542. [2020-08-18 17:14:36,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-08-18 17:14:36,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 796 transitions. [2020-08-18 17:14:36,521 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 796 transitions. Word has length 137 [2020-08-18 17:14:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:36,522 INFO L479 AbstractCegarLoop]: Abstraction has 542 states and 796 transitions. [2020-08-18 17:14:36,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:14:36,522 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 796 transitions. [2020-08-18 17:14:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 17:14:36,528 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:36,529 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] [2020-08-18 17:14:36,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:14:36,529 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:36,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:36,531 INFO L82 PathProgramCache]: Analyzing trace with hash 801487942, now seen corresponding path program 1 times [2020-08-18 17:14:36,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:36,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250816987] [2020-08-18 17:14:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:37,104 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:14:37,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:37,151 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 17:14:37,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250816987] [2020-08-18 17:14:37,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:14:37,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:14:37,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590685030] [2020-08-18 17:14:37,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:14:37,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:37,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:14:37,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:14:37,155 INFO L87 Difference]: Start difference. First operand 542 states and 796 transitions. Second operand 5 states. [2020-08-18 17:14:40,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:40,175 INFO L93 Difference]: Finished difference Result 1574 states and 2307 transitions. [2020-08-18 17:14:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:14:40,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-08-18 17:14:40,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:40,183 INFO L225 Difference]: With dead ends: 1574 [2020-08-18 17:14:40,183 INFO L226 Difference]: Without dead ends: 1045 [2020-08-18 17:14:40,188 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 17:14:40,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-08-18 17:14:40,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1018. [2020-08-18 17:14:40,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2020-08-18 17:14:40,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1489 transitions. [2020-08-18 17:14:40,258 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1489 transitions. Word has length 137 [2020-08-18 17:14:40,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:40,258 INFO L479 AbstractCegarLoop]: Abstraction has 1018 states and 1489 transitions. [2020-08-18 17:14:40,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:14:40,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1489 transitions. [2020-08-18 17:14:40,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-18 17:14:40,263 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:40,264 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] [2020-08-18 17:14:40,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:14:40,264 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:40,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:40,265 INFO L82 PathProgramCache]: Analyzing trace with hash -930136376, now seen corresponding path program 1 times [2020-08-18 17:14:40,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:40,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609106583] [2020-08-18 17:14:40,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:40,611 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:14:40,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:40,665 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 17:14:40,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609106583] [2020-08-18 17:14:40,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:14:40,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:14:40,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893793763] [2020-08-18 17:14:40,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:14:40,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:40,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:14:40,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:14:40,669 INFO L87 Difference]: Start difference. First operand 1018 states and 1489 transitions. Second operand 4 states. [2020-08-18 17:14:44,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:44,322 INFO L93 Difference]: Finished difference Result 3008 states and 4397 transitions. [2020-08-18 17:14:44,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:14:44,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-08-18 17:14:44,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:44,336 INFO L225 Difference]: With dead ends: 3008 [2020-08-18 17:14:44,336 INFO L226 Difference]: Without dead ends: 2022 [2020-08-18 17:14:44,339 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 17:14:44,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2020-08-18 17:14:44,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1020. [2020-08-18 17:14:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2020-08-18 17:14:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1491 transitions. [2020-08-18 17:14:44,444 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1491 transitions. Word has length 138 [2020-08-18 17:14:44,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:44,445 INFO L479 AbstractCegarLoop]: Abstraction has 1020 states and 1491 transitions. [2020-08-18 17:14:44,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:14:44,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1491 transitions. [2020-08-18 17:14:44,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 17:14:44,453 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:44,454 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 17:14:44,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:14:44,454 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:44,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:44,455 INFO L82 PathProgramCache]: Analyzing trace with hash 2126861745, now seen corresponding path program 1 times [2020-08-18 17:14:44,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:44,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488842307] [2020-08-18 17:14:44,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:44,853 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:14:44,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:44,943 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 17:14:44,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488842307] [2020-08-18 17:14:44,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:14:44,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:14:44,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731776114] [2020-08-18 17:14:44,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:14:44,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:44,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:14:44,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:14:44,947 INFO L87 Difference]: Start difference. First operand 1020 states and 1491 transitions. Second operand 4 states. [2020-08-18 17:14:47,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:47,776 INFO L93 Difference]: Finished difference Result 2630 states and 3845 transitions. [2020-08-18 17:14:47,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:14:47,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-08-18 17:14:47,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:47,787 INFO L225 Difference]: With dead ends: 2630 [2020-08-18 17:14:47,787 INFO L226 Difference]: Without dead ends: 1780 [2020-08-18 17:14:47,790 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 17:14:47,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2020-08-18 17:14:47,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1753. [2020-08-18 17:14:47,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1753 states. [2020-08-18 17:14:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2535 transitions. [2020-08-18 17:14:47,887 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2535 transitions. Word has length 139 [2020-08-18 17:14:47,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:47,887 INFO L479 AbstractCegarLoop]: Abstraction has 1753 states and 2535 transitions. [2020-08-18 17:14:47,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:14:47,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2535 transitions. [2020-08-18 17:14:47,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 17:14:47,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:47,892 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 17:14:47,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:14:47,892 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:47,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:47,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1309552884, now seen corresponding path program 1 times [2020-08-18 17:14:47,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:47,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013153291] [2020-08-18 17:14:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:48,307 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:14:48,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:48,346 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 17:14:48,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013153291] [2020-08-18 17:14:48,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:14:48,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:14:48,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204778441] [2020-08-18 17:14:48,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:14:48,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:48,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:14:48,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:14:48,349 INFO L87 Difference]: Start difference. First operand 1753 states and 2535 transitions. Second operand 5 states. [2020-08-18 17:14:50,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:50,367 INFO L93 Difference]: Finished difference Result 3713 states and 5306 transitions. [2020-08-18 17:14:50,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:14:50,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-08-18 17:14:50,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:50,378 INFO L225 Difference]: With dead ends: 3713 [2020-08-18 17:14:50,379 INFO L226 Difference]: Without dead ends: 1916 [2020-08-18 17:14:50,383 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 17:14:50,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2020-08-18 17:14:50,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1888. [2020-08-18 17:14:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2020-08-18 17:14:50,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2688 transitions. [2020-08-18 17:14:50,476 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2688 transitions. Word has length 139 [2020-08-18 17:14:50,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:50,477 INFO L479 AbstractCegarLoop]: Abstraction has 1888 states and 2688 transitions. [2020-08-18 17:14:50,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:14:50,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2688 transitions. [2020-08-18 17:14:50,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 17:14:50,482 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:50,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:14:50,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:14:50,483 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:50,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:50,483 INFO L82 PathProgramCache]: Analyzing trace with hash -62113563, now seen corresponding path program 1 times [2020-08-18 17:14:50,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:50,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040037684] [2020-08-18 17:14:50,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:50,903 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:14:50,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:50,951 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 17:14:50,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040037684] [2020-08-18 17:14:50,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:14:50,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:14:50,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783694275] [2020-08-18 17:14:50,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:14:50,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:50,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:14:50,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:14:50,963 INFO L87 Difference]: Start difference. First operand 1888 states and 2688 transitions. Second operand 5 states. [2020-08-18 17:14:53,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:53,818 INFO L93 Difference]: Finished difference Result 5440 states and 7698 transitions. [2020-08-18 17:14:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:14:53,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-08-18 17:14:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:53,835 INFO L225 Difference]: With dead ends: 5440 [2020-08-18 17:14:53,835 INFO L226 Difference]: Without dead ends: 3624 [2020-08-18 17:14:53,839 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 17:14:53,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2020-08-18 17:14:53,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3596. [2020-08-18 17:14:53,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3596 states. [2020-08-18 17:14:54,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5054 transitions. [2020-08-18 17:14:54,009 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5054 transitions. Word has length 139 [2020-08-18 17:14:54,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:54,011 INFO L479 AbstractCegarLoop]: Abstraction has 3596 states and 5054 transitions. [2020-08-18 17:14:54,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:14:54,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5054 transitions. [2020-08-18 17:14:54,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-08-18 17:14:54,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:54,018 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 17:14:54,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:14:54,019 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:54,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:54,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1308011143, now seen corresponding path program 1 times [2020-08-18 17:14:54,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:54,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974272393] [2020-08-18 17:14:54,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:54,310 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:14:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:54,362 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 17:14:54,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974272393] [2020-08-18 17:14:54,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:14:54,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:14:54,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989188826] [2020-08-18 17:14:54,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:14:54,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:54,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:14:54,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:14:54,366 INFO L87 Difference]: Start difference. First operand 3596 states and 5054 transitions. Second operand 4 states. [2020-08-18 17:14:56,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:56,322 INFO L93 Difference]: Finished difference Result 10594 states and 14858 transitions. [2020-08-18 17:14:56,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:14:56,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-08-18 17:14:56,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:56,350 INFO L225 Difference]: With dead ends: 10594 [2020-08-18 17:14:56,351 INFO L226 Difference]: Without dead ends: 7114 [2020-08-18 17:14:56,358 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 17:14:56,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7114 states. [2020-08-18 17:14:56,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7114 to 3608. [2020-08-18 17:14:56,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3608 states. [2020-08-18 17:14:56,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 5066 transitions. [2020-08-18 17:14:56,576 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 5066 transitions. Word has length 140 [2020-08-18 17:14:56,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:14:56,576 INFO L479 AbstractCegarLoop]: Abstraction has 3608 states and 5066 transitions. [2020-08-18 17:14:56,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:14:56,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 5066 transitions. [2020-08-18 17:14:56,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-18 17:14:56,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:14:56,583 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 17:14:56,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 17:14:56,584 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:14:56,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:14:56,584 INFO L82 PathProgramCache]: Analyzing trace with hash -537100028, now seen corresponding path program 1 times [2020-08-18 17:14:56,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:14:56,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718400181] [2020-08-18 17:14:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:14:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:56,970 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:14:56,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:14:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:14:57,021 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 17:14:57,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718400181] [2020-08-18 17:14:57,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:14:57,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:14:57,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223543551] [2020-08-18 17:14:57,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:14:57,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:14:57,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:14:57,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:14:57,028 INFO L87 Difference]: Start difference. First operand 3608 states and 5066 transitions. Second operand 5 states. [2020-08-18 17:14:59,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:14:59,865 INFO L93 Difference]: Finished difference Result 10400 states and 14546 transitions. [2020-08-18 17:14:59,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:14:59,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-08-18 17:14:59,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:14:59,890 INFO L225 Difference]: With dead ends: 10400 [2020-08-18 17:14:59,891 INFO L226 Difference]: Without dead ends: 6918 [2020-08-18 17:14:59,898 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 17:14:59,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6918 states. [2020-08-18 17:15:00,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6918 to 6890. [2020-08-18 17:15:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6890 states. [2020-08-18 17:15:00,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6890 states to 6890 states and 9552 transitions. [2020-08-18 17:15:00,224 INFO L78 Accepts]: Start accepts. Automaton has 6890 states and 9552 transitions. Word has length 141 [2020-08-18 17:15:00,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:15:00,224 INFO L479 AbstractCegarLoop]: Abstraction has 6890 states and 9552 transitions. [2020-08-18 17:15:00,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:15:00,226 INFO L276 IsEmpty]: Start isEmpty. Operand 6890 states and 9552 transitions. [2020-08-18 17:15:00,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 17:15:00,237 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:15:00,237 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 17:15:00,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 17:15:00,237 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:15:00,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:15:00,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1250906830, now seen corresponding path program 1 times [2020-08-18 17:15:00,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:15:00,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101791489] [2020-08-18 17:15:00,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:15:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:15:00,582 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:15:00,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:15:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:15:00,624 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 17:15:00,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101791489] [2020-08-18 17:15:00,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:15:00,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:15:00,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323493254] [2020-08-18 17:15:00,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:15:00,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:15:00,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:15:00,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:15:00,627 INFO L87 Difference]: Start difference. First operand 6890 states and 9552 transitions. Second operand 5 states. [2020-08-18 17:15:03,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:15:03,836 INFO L93 Difference]: Finished difference Result 19130 states and 26600 transitions. [2020-08-18 17:15:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:15:03,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-18 17:15:03,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:15:03,868 INFO L225 Difference]: With dead ends: 19130 [2020-08-18 17:15:03,868 INFO L226 Difference]: Without dead ends: 12556 [2020-08-18 17:15:03,880 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 17:15:03,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12556 states. [2020-08-18 17:15:04,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12556 to 12534. [2020-08-18 17:15:04,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12534 states. [2020-08-18 17:15:04,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12534 states to 12534 states and 17242 transitions. [2020-08-18 17:15:04,359 INFO L78 Accepts]: Start accepts. Automaton has 12534 states and 17242 transitions. Word has length 143 [2020-08-18 17:15:04,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:15:04,360 INFO L479 AbstractCegarLoop]: Abstraction has 12534 states and 17242 transitions. [2020-08-18 17:15:04,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:15:04,360 INFO L276 IsEmpty]: Start isEmpty. Operand 12534 states and 17242 transitions. [2020-08-18 17:15:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 17:15:04,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:15:04,375 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 17:15:04,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 17:15:04,375 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:15:04,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:15:04,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1963229590, now seen corresponding path program 1 times [2020-08-18 17:15:04,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:15:04,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6186290] [2020-08-18 17:15:04,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:15:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:15:04,709 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:15:04,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:15:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:15:04,823 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 17:15:04,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6186290] [2020-08-18 17:15:04,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:15:04,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:15:04,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291752027] [2020-08-18 17:15:04,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:15:04,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:15:04,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:15:04,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:15:04,825 INFO L87 Difference]: Start difference. First operand 12534 states and 17242 transitions. Second operand 5 states. [2020-08-18 17:15:08,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:15:08,209 INFO L93 Difference]: Finished difference Result 17628 states and 24168 transitions. [2020-08-18 17:15:08,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:15:08,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-18 17:15:08,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:15:08,234 INFO L225 Difference]: With dead ends: 17628 [2020-08-18 17:15:08,234 INFO L226 Difference]: Without dead ends: 12565 [2020-08-18 17:15:08,243 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 17:15:08,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12565 states. [2020-08-18 17:15:08,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12565 to 12279. [2020-08-18 17:15:08,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12279 states. [2020-08-18 17:15:08,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12279 states to 12279 states and 16890 transitions. [2020-08-18 17:15:08,772 INFO L78 Accepts]: Start accepts. Automaton has 12279 states and 16890 transitions. Word has length 143 [2020-08-18 17:15:08,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:15:08,773 INFO L479 AbstractCegarLoop]: Abstraction has 12279 states and 16890 transitions. [2020-08-18 17:15:08,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:15:08,773 INFO L276 IsEmpty]: Start isEmpty. Operand 12279 states and 16890 transitions. [2020-08-18 17:15:08,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 17:15:08,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:15:08,787 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 17:15:08,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 17:15:08,788 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:15:08,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:15:08,788 INFO L82 PathProgramCache]: Analyzing trace with hash -2070457181, now seen corresponding path program 1 times [2020-08-18 17:15:08,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:15:08,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852619647] [2020-08-18 17:15:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:15:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:15:08,956 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:15:08,956 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:15:08,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 17:15:09,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:15:09 BoogieIcfgContainer [2020-08-18 17:15:09,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:15:09,008 INFO L168 Benchmark]: Toolchain (without parser) took 39652.27 ms. Allocated memory was 141.0 MB in the beginning and 773.8 MB in the end (delta: 632.8 MB). Free memory was 101.1 MB in the beginning and 651.7 MB in the end (delta: -550.6 MB). Peak memory consumption was 696.3 MB. Max. memory is 7.1 GB. [2020-08-18 17:15:09,008 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 17:15:09,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1240.37 ms. Allocated memory was 141.0 MB in the beginning and 206.0 MB in the end (delta: 65.0 MB). Free memory was 100.9 MB in the beginning and 172.1 MB in the end (delta: -71.1 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. [2020-08-18 17:15:09,010 INFO L168 Benchmark]: Boogie Preprocessor took 113.65 ms. Allocated memory is still 206.0 MB. Free memory was 172.1 MB in the beginning and 167.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-08-18 17:15:09,011 INFO L168 Benchmark]: RCFGBuilder took 1670.98 ms. Allocated memory was 206.0 MB in the beginning and 237.5 MB in the end (delta: 31.5 MB). Free memory was 167.1 MB in the beginning and 119.2 MB in the end (delta: 47.9 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. [2020-08-18 17:15:09,012 INFO L168 Benchmark]: TraceAbstraction took 36614.94 ms. Allocated memory was 237.5 MB in the beginning and 773.8 MB in the end (delta: 536.3 MB). Free memory was 119.2 MB in the beginning and 651.7 MB in the end (delta: -532.5 MB). Peak memory consumption was 617.8 MB. Max. memory is 7.1 GB. [2020-08-18 17:15:09,015 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1240.37 ms. Allocated memory was 141.0 MB in the beginning and 206.0 MB in the end (delta: 65.0 MB). Free memory was 100.9 MB in the beginning and 172.1 MB in the end (delta: -71.1 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.65 ms. Allocated memory is still 206.0 MB. Free memory was 172.1 MB in the beginning and 167.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1670.98 ms. Allocated memory was 206.0 MB in the beginning and 237.5 MB in the end (delta: 31.5 MB). Free memory was 167.1 MB in the beginning and 119.2 MB in the end (delta: 47.9 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36614.94 ms. Allocated memory was 237.5 MB in the beginning and 773.8 MB in the end (delta: 536.3 MB). Free memory was 119.2 MB in the beginning and 651.7 MB in the end (delta: -532.5 MB). Peak memory consumption was 617.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 793]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] char id2 = '\x0'; [L47] char r2 = '\x0'; [L48] char st2 = '\x0'; [L49] char nl2 = '\x0'; [L50] char m2 = '\x0'; [L51] char max2 = '\x0'; [L52] _Bool mode2 = 0; [L53] char id3 = '\x0'; [L54] char r3 = '\x0'; [L55] char st3 = '\x0'; [L56] char nl3 = '\x0'; [L57] char m3 = '\x0'; [L58] char max3 = '\x0'; [L59] _Bool mode3 = 0; [L63] void (*nodes[3])() = { &node1, &node2, &node3 }; [L67] int __return_1708; [L68] int __return_1836; [L69] int __return_1954; [L70] int __return_2075; [L71] int __return_2801; [L72] int __return_2770; [L73] int __return_2712; [L74] int __return_2678; [L75] int __tmp_2199_0; [L76] int __return_2307; [L77] int __return_2212; [L78] int __return_2575; [L79] int __return_2541; [L80] int __return_2462; [L81] int __return_2198; [L84] int main__c1; [L85] int main__i2; [L86] main__c1 = 0 [L87] ep12 = __VERIFIER_nondet_bool() [L88] ep13 = __VERIFIER_nondet_bool() [L89] ep21 = __VERIFIER_nondet_bool() [L90] ep23 = __VERIFIER_nondet_bool() [L91] ep31 = __VERIFIER_nondet_bool() [L92] ep32 = __VERIFIER_nondet_bool() [L93] id1 = __VERIFIER_nondet_char() [L94] r1 = __VERIFIER_nondet_char() [L95] st1 = __VERIFIER_nondet_char() [L96] nl1 = __VERIFIER_nondet_char() [L97] m1 = __VERIFIER_nondet_char() [L98] max1 = __VERIFIER_nondet_char() [L99] mode1 = __VERIFIER_nondet_bool() [L100] id2 = __VERIFIER_nondet_char() [L101] r2 = __VERIFIER_nondet_char() [L102] st2 = __VERIFIER_nondet_char() [L103] nl2 = __VERIFIER_nondet_char() [L104] m2 = __VERIFIER_nondet_char() [L105] max2 = __VERIFIER_nondet_char() [L106] mode2 = __VERIFIER_nondet_bool() [L107] id3 = __VERIFIER_nondet_char() [L108] r3 = __VERIFIER_nondet_char() [L109] st3 = __VERIFIER_nondet_char() [L110] nl3 = __VERIFIER_nondet_char() [L111] m3 = __VERIFIER_nondet_char() [L112] max3 = __VERIFIER_nondet_char() [L113] mode3 = __VERIFIER_nondet_bool() [L115] _Bool init__r121; [L116] _Bool init__r131; [L117] _Bool init__r211; [L118] _Bool init__r231; [L119] _Bool init__r311; [L120] _Bool init__r321; [L121] _Bool init__r122; [L122] int init__tmp; [L123] _Bool init__r132; [L124] int init__tmp___0; [L125] _Bool init__r212; [L126] int init__tmp___1; [L127] _Bool init__r232; [L128] int init__tmp___2; [L129] _Bool init__r312; [L130] int init__tmp___3; [L131] _Bool init__r322; [L132] int init__tmp___4; [L133] int init__tmp___5; [L134] init__r121 = ep12 [L135] init__r131 = ep13 [L136] init__r211 = ep21 [L137] init__r231 = ep23 [L138] init__r311 = ep31 [L139] init__r321 = ep32 [L140] COND FALSE !(!(init__r121 == 0)) [L2910] COND FALSE !(!(init__r131 == 0)) [L2926] init__tmp = 0 [L144] init__r122 = (_Bool)init__tmp [L145] COND FALSE !(!(init__r131 == 0)) [L2887] COND FALSE !(!(init__r121 == 0)) [L2903] init__tmp___0 = 0 [L149] init__r132 = (_Bool)init__tmp___0 [L150] COND FALSE !(!(init__r211 == 0)) [L2864] COND FALSE !(!(init__r231 == 0)) [L2880] init__tmp___1 = 0 [L154] init__r212 = (_Bool)init__tmp___1 [L155] COND FALSE !(!(init__r231 == 0)) [L2841] COND FALSE !(!(init__r211 == 0)) [L2857] init__tmp___2 = 0 [L159] init__r232 = (_Bool)init__tmp___2 [L160] COND FALSE !(!(init__r311 == 0)) [L2818] COND FALSE !(!(init__r321 == 0)) [L2834] init__tmp___3 = 0 [L164] init__r312 = (_Bool)init__tmp___3 [L165] COND FALSE !(!(init__r321 == 0)) [L2795] COND FALSE !(!(init__r311 == 0)) [L2811] init__tmp___4 = 0 [L169] init__r322 = (_Bool)init__tmp___4 [L170] COND TRUE ((int)id1) != ((int)id2) [L172] COND TRUE ((int)id1) != ((int)id3) [L174] COND TRUE ((int)id2) != ((int)id3) [L176] COND TRUE ((int)id1) >= 0 [L178] COND TRUE ((int)id2) >= 0 [L180] COND TRUE ((int)id3) >= 0 [L182] COND TRUE ((int)r1) == 0 [L184] COND TRUE ((int)r2) == 0 [L186] COND TRUE ((int)r3) == 0 [L188] COND TRUE ((int)max1) == ((int)id1) [L190] COND TRUE ((int)max2) == ((int)id2) [L192] COND TRUE ((int)max3) == ((int)id3) [L194] COND TRUE ((int)st1) == 0 [L196] COND TRUE ((int)st2) == 0 [L198] COND TRUE ((int)st3) == 0 [L200] COND TRUE ((int)nl1) == 0 [L202] COND TRUE ((int)nl2) == 0 [L204] COND TRUE ((int)nl3) == 0 [L206] COND TRUE ((int)mode1) == 0 [L208] COND TRUE ((int)mode2) == 0 [L210] COND TRUE ((int)mode3) == 0 [L212] init__tmp___5 = 1 [L213] __return_1708 = init__tmp___5 [L214] main__i2 = __return_1708 [L215] COND TRUE main__i2 != 0 [L217] p12_old = nomsg [L218] p12_new = nomsg [L219] p13_old = nomsg [L220] p13_new = nomsg [L221] p21_old = nomsg [L222] p21_new = nomsg [L223] p23_old = nomsg [L224] p23_new = nomsg [L225] p31_old = nomsg [L226] p31_new = nomsg [L227] p32_old = nomsg [L228] p32_new = nomsg [L229] main__i2 = 0 [L230] COND TRUE main__i2 < 6 [L233] COND FALSE !(!(mode1 == 0)) [L239] COND TRUE ((int)r1) < 2 [L241] COND FALSE !(!(ep12 == 0)) [L252] COND FALSE !(!(ep13 == 0)) [L263] mode1 = 1 [L265] COND FALSE !(!(mode2 == 0)) [L271] COND TRUE ((int)r2) < 2 [L273] COND FALSE !(!(ep21 == 0)) [L284] COND FALSE !(!(ep23 == 0)) [L295] mode2 = 1 [L297] COND FALSE !(!(mode3 == 0)) [L303] COND TRUE ((int)r3) < 2 [L305] COND FALSE !(!(ep31 == 0)) [L316] COND FALSE !(!(ep32 == 0)) [L327] mode3 = 1 [L328] p12_old = p12_new [L329] p12_new = nomsg [L330] p13_old = p13_new [L331] p13_new = nomsg [L332] p21_old = p21_new [L333] p21_new = nomsg [L334] p23_old = p23_new [L335] p23_new = nomsg [L336] p31_old = p31_new [L337] p31_new = nomsg [L338] p32_old = p32_new [L339] p32_new = nomsg [L341] int check__tmp; [L342] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L344] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L346] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L348] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L350] COND FALSE !(((int)r1) >= 2) [L356] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L358] COND TRUE ((int)r1) < 2 [L360] COND FALSE !(((int)r1) >= 2) [L366] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L368] COND TRUE ((int)r1) < 2 [L370] check__tmp = 1 [L371] __return_1836 = check__tmp [L372] main__c1 = __return_1836 [L374] _Bool __tmp_1; [L375] __tmp_1 = main__c1 [L376] _Bool assert__arg; [L377] assert__arg = __tmp_1 [L378] COND FALSE !(assert__arg == 0) [L384] int main____CPAchecker_TMP_0 = main__i2; [L385] main__i2 = main__i2 + 1 [L386] COND TRUE main__i2 < 6 [L389] COND TRUE !(mode1 == 0) [L391] r1 = (char)(((int)r1) + 1) [L392] COND FALSE !(!(ep21 == 0)) [L400] COND FALSE !(!(ep31 == 0)) [L408] COND FALSE !(((int)r1) == 2) [L414] mode1 = 0 [L416] COND TRUE !(mode2 == 0) [L418] r2 = (char)(((int)r2) + 1) [L419] COND FALSE !(!(ep12 == 0)) [L427] COND FALSE !(!(ep32 == 0)) [L435] COND FALSE !(((int)r2) == 2) [L441] mode2 = 0 [L443] COND TRUE !(mode3 == 0) [L445] r3 = (char)(((int)r3) + 1) [L446] COND FALSE !(!(ep13 == 0)) [L454] COND FALSE !(!(ep23 == 0)) [L462] COND FALSE !(((int)r3) == 2) [L468] mode3 = 0 [L469] p12_old = p12_new [L470] p12_new = nomsg [L471] p13_old = p13_new [L472] p13_new = nomsg [L473] p21_old = p21_new [L474] p21_new = nomsg [L475] p23_old = p23_new [L476] p23_new = nomsg [L477] p31_old = p31_new [L478] p31_new = nomsg [L479] p32_old = p32_new [L480] p32_new = nomsg [L482] int check__tmp; [L483] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L485] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L487] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L489] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L491] COND FALSE !(((int)r1) >= 2) [L497] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L499] COND TRUE ((int)r1) < 2 [L501] COND FALSE !(((int)r1) >= 2) [L507] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L509] COND TRUE ((int)r1) < 2 [L511] check__tmp = 1 [L512] __return_1954 = check__tmp [L513] main__c1 = __return_1954 [L515] _Bool __tmp_2; [L516] __tmp_2 = main__c1 [L517] _Bool assert__arg; [L518] assert__arg = __tmp_2 [L519] COND FALSE !(assert__arg == 0) [L525] int main____CPAchecker_TMP_0 = main__i2; [L526] main__i2 = main__i2 + 1 [L527] COND TRUE main__i2 < 6 [L530] COND FALSE !(!(mode1 == 0)) [L536] COND TRUE ((int)r1) < 2 [L538] COND FALSE !(!(ep12 == 0)) [L549] COND FALSE !(!(ep13 == 0)) [L560] mode1 = 1 [L562] COND FALSE !(!(mode2 == 0)) [L568] COND TRUE ((int)r2) < 2 [L570] COND FALSE !(!(ep21 == 0)) [L581] COND FALSE !(!(ep23 == 0)) [L592] mode2 = 1 [L594] COND FALSE !(!(mode3 == 0)) [L600] COND TRUE ((int)r3) < 2 [L602] COND FALSE !(!(ep31 == 0)) [L613] COND FALSE !(!(ep32 == 0)) [L624] mode3 = 1 [L625] p12_old = p12_new [L626] p12_new = nomsg [L627] p13_old = p13_new [L628] p13_new = nomsg [L629] p21_old = p21_new [L630] p21_new = nomsg [L631] p23_old = p23_new [L632] p23_new = nomsg [L633] p31_old = p31_new [L634] p31_new = nomsg [L635] p32_old = p32_new [L636] p32_new = nomsg [L638] int check__tmp; [L639] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L641] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L643] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L645] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L647] COND FALSE !(((int)r1) >= 2) [L653] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L655] COND TRUE ((int)r1) < 2 [L657] COND FALSE !(((int)r1) >= 2) [L663] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L665] COND TRUE ((int)r1) < 2 [L667] check__tmp = 1 [L668] __return_2075 = check__tmp [L669] main__c1 = __return_2075 [L671] _Bool __tmp_3; [L672] __tmp_3 = main__c1 [L673] _Bool assert__arg; [L674] assert__arg = __tmp_3 [L675] COND FALSE !(assert__arg == 0) [L681] int main____CPAchecker_TMP_0 = main__i2; [L682] main__i2 = main__i2 + 1 [L683] COND TRUE main__i2 < 6 [L686] COND TRUE !(mode1 == 0) [L688] r1 = (char)(((int)r1) + 1) [L689] COND FALSE !(!(ep21 == 0)) [L697] COND FALSE !(!(ep31 == 0)) [L705] COND TRUE ((int)r1) == 2 [L707] COND TRUE ((int)max1) == ((int)id1) [L709] st1 = 1 [L710] mode1 = 0 [L712] COND TRUE !(mode2 == 0) [L714] r2 = (char)(((int)r2) + 1) [L715] COND FALSE !(!(ep12 == 0)) [L723] COND FALSE !(!(ep32 == 0)) [L731] COND TRUE ((int)r2) == 2 [L733] COND TRUE ((int)max2) == ((int)id2) [L735] st2 = 1 [L736] mode2 = 0 [L738] COND TRUE !(mode3 == 0) [L740] r3 = (char)(((int)r3) + 1) [L741] COND FALSE !(!(ep13 == 0)) [L749] COND FALSE !(!(ep23 == 0)) [L757] COND TRUE ((int)r3) == 2 [L759] COND TRUE ((int)max3) == ((int)id3) [L761] st3 = 1 [L762] mode3 = 0 [L763] p12_old = p12_new [L764] p12_new = nomsg [L765] p13_old = p13_new [L766] p13_new = nomsg [L767] p21_old = p21_new [L768] p21_new = nomsg [L769] p23_old = p23_new [L770] p23_new = nomsg [L771] p31_old = p31_new [L772] p31_new = nomsg [L773] p32_old = p32_new [L774] p32_new = nomsg [L776] int check__tmp; [L777] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L783] check__tmp = 0 [L784] __return_2801 = check__tmp [L785] main__c1 = __return_2801 [L787] _Bool __tmp_4; [L788] __tmp_4 = main__c1 [L789] _Bool assert__arg; [L790] assert__arg = __tmp_4 [L791] COND TRUE assert__arg == 0 [L793] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 380 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.5s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 28.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8440 SDtfs, 8507 SDslu, 4947 SDs, 0 SdLazy, 8948 SolverSat, 113 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12534occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 4956 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1539 NumberOfCodeBlocks, 1539 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1386 ConstructedInterpolants, 0 QuantifiedInterpolants, 775942 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...