/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:26:25,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:26:25,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:26:25,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:26:25,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:26:25,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:26:25,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:26:25,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:26:25,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:26:25,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:26:25,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:26:25,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:26:25,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:26:25,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:26:25,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:26:25,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:26:25,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:26:25,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:26:25,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:26:25,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:26:25,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:26:25,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:26:25,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:26:25,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:26:25,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 06:26:25,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:26:25,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:26:25,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:26:25,251 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 [2020-08-22 06:26:25,274 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:26:25,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:26:25,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:26:25,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:26:25,276 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:26:25,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:26:25,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:26:25,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:26:25,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:26:25,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:26:25,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:26:25,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:26:25,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:26:25,277 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:26:25,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:26:25,278 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:26:25,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:26:25,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:26:25,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:26:25,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:26:25,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:26:25,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:26:25,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:26:25,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:26:25,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:26:25,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:26:25,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:26:25,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:26:25,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:26:25,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:26:25,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:26:25,616 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:26:25,622 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:26:25,623 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:26:25,625 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:26:25,625 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-22 06:26:25,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c0ae6a03/f7236dd1b4f44cfdb0753f2c6305c31c/FLAGd7d0668df [2020-08-22 06:26:26,231 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:26:26,231 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-22 06:26:26,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c0ae6a03/f7236dd1b4f44cfdb0753f2c6305c31c/FLAGd7d0668df [2020-08-22 06:26:26,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c0ae6a03/f7236dd1b4f44cfdb0753f2c6305c31c [2020-08-22 06:26:26,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:26:26,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:26:26,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:26:26,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:26:26,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:26:26,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:26:26" (1/1) ... [2020-08-22 06:26:26,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68901205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:26, skipping insertion in model container [2020-08-22 06:26:26,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:26:26" (1/1) ... [2020-08-22 06:26:26,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:26:26,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:26:27,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:26:27,286 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:26:27,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:26:27,471 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:26:27,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:27 WrapperNode [2020-08-22 06:26:27,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:26:27,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:26:27,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:26:27,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:26:27,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:27" (1/1) ... [2020-08-22 06:26:27,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:27" (1/1) ... [2020-08-22 06:26:27,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:27" (1/1) ... [2020-08-22 06:26:27,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:27" (1/1) ... [2020-08-22 06:26:27,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:27" (1/1) ... [2020-08-22 06:26:27,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:27" (1/1) ... [2020-08-22 06:26:27,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:27" (1/1) ... [2020-08-22 06:26:27,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:26:27,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:26:27,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:26:27,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:26:27,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:27" (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 [2020-08-22 06:26:27,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:26:27,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:26:27,663 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 06:26:27,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:26:27,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:26:27,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 06:26:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-22 06:26:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-22 06:26:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 06:26:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 06:26:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-22 06:26:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-22 06:26:27,667 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-22 06:26:27,667 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-22 06:26:27,667 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-22 06:26:27,668 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-22 06:26:27,668 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-22 06:26:27,668 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:26:27,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:26:27,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:26:29,042 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:26:29,042 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 06:26:29,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:26:29 BoogieIcfgContainer [2020-08-22 06:26:29,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:26:29,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:26:29,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:26:29,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:26:29,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:26:26" (1/3) ... [2020-08-22 06:26:29,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e739f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:26:29, skipping insertion in model container [2020-08-22 06:26:29,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:27" (2/3) ... [2020-08-22 06:26:29,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e739f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:26:29, skipping insertion in model container [2020-08-22 06:26:29,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:26:29" (3/3) ... [2020-08-22 06:26:29,057 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-22 06:26:29,068 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:26:29,076 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:26:29,091 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:26:29,116 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:26:29,116 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:26:29,116 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:26:29,117 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:26:29,117 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:26:29,117 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:26:29,117 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:26:29,117 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:26:29,140 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-08-22 06:26:29,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 06:26:29,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:29,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:26:29,158 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:29,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:29,163 INFO L82 PathProgramCache]: Analyzing trace with hash -483172071, now seen corresponding path program 1 times [2020-08-22 06:26:29,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:29,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025479723] [2020-08-22 06:26:29,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:30,124 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 06:26:30,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:30,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:26:30,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025479723] [2020-08-22 06:26:30,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:30,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:26:30,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953741475] [2020-08-22 06:26:30,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:26:30,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:30,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:26:30,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:26:30,242 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 4 states. [2020-08-22 06:26:30,525 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-08-22 06:26:32,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:32,209 INFO L93 Difference]: Finished difference Result 599 states and 1046 transitions. [2020-08-22 06:26:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:26:32,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-08-22 06:26:32,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:32,249 INFO L225 Difference]: With dead ends: 599 [2020-08-22 06:26:32,250 INFO L226 Difference]: Without dead ends: 487 [2020-08-22 06:26:32,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:26:32,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2020-08-22 06:26:32,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 485. [2020-08-22 06:26:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-08-22 06:26:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 724 transitions. [2020-08-22 06:26:32,370 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 724 transitions. Word has length 142 [2020-08-22 06:26:32,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:32,371 INFO L479 AbstractCegarLoop]: Abstraction has 485 states and 724 transitions. [2020-08-22 06:26:32,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:26:32,371 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 724 transitions. [2020-08-22 06:26:32,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 06:26:32,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:32,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:26:32,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:26:32,376 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:32,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:32,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1126069355, now seen corresponding path program 1 times [2020-08-22 06:26:32,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:32,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223462553] [2020-08-22 06:26:32,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:32,821 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 06:26:32,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:26:32,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223462553] [2020-08-22 06:26:32,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:32,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:26:32,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722135065] [2020-08-22 06:26:32,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:26:32,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:32,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:26:32,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:26:32,878 INFO L87 Difference]: Start difference. First operand 485 states and 724 transitions. Second operand 4 states. [2020-08-22 06:26:33,197 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-08-22 06:26:34,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:34,485 INFO L93 Difference]: Finished difference Result 1027 states and 1575 transitions. [2020-08-22 06:26:34,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:26:34,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-08-22 06:26:34,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:34,492 INFO L225 Difference]: With dead ends: 1027 [2020-08-22 06:26:34,492 INFO L226 Difference]: Without dead ends: 845 [2020-08-22 06:26:34,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:26:34,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-08-22 06:26:34,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 843. [2020-08-22 06:26:34,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2020-08-22 06:26:34,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1268 transitions. [2020-08-22 06:26:34,542 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1268 transitions. Word has length 142 [2020-08-22 06:26:34,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:34,542 INFO L479 AbstractCegarLoop]: Abstraction has 843 states and 1268 transitions. [2020-08-22 06:26:34,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:26:34,543 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1268 transitions. [2020-08-22 06:26:34,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 06:26:34,546 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:34,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:26:34,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:26:34,547 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:34,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:34,548 INFO L82 PathProgramCache]: Analyzing trace with hash 229473698, now seen corresponding path program 1 times [2020-08-22 06:26:34,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:34,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139707540] [2020-08-22 06:26:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:34,931 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 06:26:34,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:26:35,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139707540] [2020-08-22 06:26:35,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:35,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:26:35,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794638116] [2020-08-22 06:26:35,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:26:35,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:35,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:26:35,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:26:35,028 INFO L87 Difference]: Start difference. First operand 843 states and 1268 transitions. Second operand 5 states. [2020-08-22 06:26:37,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:37,373 INFO L93 Difference]: Finished difference Result 2459 states and 3695 transitions. [2020-08-22 06:26:37,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:26:37,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-22 06:26:37,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:37,386 INFO L225 Difference]: With dead ends: 2459 [2020-08-22 06:26:37,387 INFO L226 Difference]: Without dead ends: 1629 [2020-08-22 06:26:37,391 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 [2020-08-22 06:26:37,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2020-08-22 06:26:37,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1627. [2020-08-22 06:26:37,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1627 states. [2020-08-22 06:26:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2425 transitions. [2020-08-22 06:26:37,582 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2425 transitions. Word has length 142 [2020-08-22 06:26:37,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:37,582 INFO L479 AbstractCegarLoop]: Abstraction has 1627 states and 2425 transitions. [2020-08-22 06:26:37,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:26:37,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2425 transitions. [2020-08-22 06:26:37,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 06:26:37,588 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:37,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:26:37,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:26:37,589 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:37,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:37,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1866532876, now seen corresponding path program 1 times [2020-08-22 06:26:37,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:37,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481961813] [2020-08-22 06:26:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:37,920 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 06:26:37,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:37,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:26:37,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481961813] [2020-08-22 06:26:37,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:37,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:26:37,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369910091] [2020-08-22 06:26:37,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:26:37,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:37,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:26:37,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:26:37,980 INFO L87 Difference]: Start difference. First operand 1627 states and 2425 transitions. Second operand 4 states. [2020-08-22 06:26:39,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:39,775 INFO L93 Difference]: Finished difference Result 4835 states and 7205 transitions. [2020-08-22 06:26:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 06:26:39,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-22 06:26:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:39,801 INFO L225 Difference]: With dead ends: 4835 [2020-08-22 06:26:39,802 INFO L226 Difference]: Without dead ends: 3240 [2020-08-22 06:26:39,806 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 [2020-08-22 06:26:39,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2020-08-22 06:26:39,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 1629. [2020-08-22 06:26:39,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2020-08-22 06:26:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2427 transitions. [2020-08-22 06:26:39,985 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2427 transitions. Word has length 143 [2020-08-22 06:26:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:39,986 INFO L479 AbstractCegarLoop]: Abstraction has 1629 states and 2427 transitions. [2020-08-22 06:26:39,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:26:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2427 transitions. [2020-08-22 06:26:39,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-08-22 06:26:39,992 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:39,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:26:39,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:26:39,993 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:39,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:39,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1747112419, now seen corresponding path program 1 times [2020-08-22 06:26:39,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:39,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106801873] [2020-08-22 06:26:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:40,473 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 06:26:40,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:26:40,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106801873] [2020-08-22 06:26:40,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:40,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:26:40,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485962295] [2020-08-22 06:26:40,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:26:40,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:40,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:26:40,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:26:40,522 INFO L87 Difference]: Start difference. First operand 1629 states and 2427 transitions. Second operand 5 states. [2020-08-22 06:26:42,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:42,546 INFO L93 Difference]: Finished difference Result 4735 states and 7041 transitions. [2020-08-22 06:26:42,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:26:42,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-08-22 06:26:42,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:42,564 INFO L225 Difference]: With dead ends: 4735 [2020-08-22 06:26:42,565 INFO L226 Difference]: Without dead ends: 3140 [2020-08-22 06:26:42,568 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 [2020-08-22 06:26:42,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2020-08-22 06:26:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3138. [2020-08-22 06:26:42,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3138 states. [2020-08-22 06:26:42,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4626 transitions. [2020-08-22 06:26:42,726 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4626 transitions. Word has length 144 [2020-08-22 06:26:42,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:42,726 INFO L479 AbstractCegarLoop]: Abstraction has 3138 states and 4626 transitions. [2020-08-22 06:26:42,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:26:42,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4626 transitions. [2020-08-22 06:26:42,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-22 06:26:42,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:42,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:26:42,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 06:26:42,733 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:42,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:42,733 INFO L82 PathProgramCache]: Analyzing trace with hash 470263341, now seen corresponding path program 1 times [2020-08-22 06:26:42,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:42,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767753672] [2020-08-22 06:26:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:43,008 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 06:26:43,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:26:43,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767753672] [2020-08-22 06:26:43,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:43,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:26:43,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875378999] [2020-08-22 06:26:43,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:26:43,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:43,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:26:43,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:26:43,043 INFO L87 Difference]: Start difference. First operand 3138 states and 4626 transitions. Second operand 4 states. [2020-08-22 06:26:45,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:45,635 INFO L93 Difference]: Finished difference Result 9330 states and 13750 transitions. [2020-08-22 06:26:45,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 06:26:45,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-08-22 06:26:45,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:45,665 INFO L225 Difference]: With dead ends: 9330 [2020-08-22 06:26:45,666 INFO L226 Difference]: Without dead ends: 6240 [2020-08-22 06:26:45,673 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 [2020-08-22 06:26:45,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2020-08-22 06:26:45,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 3142. [2020-08-22 06:26:45,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3142 states. [2020-08-22 06:26:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4630 transitions. [2020-08-22 06:26:45,857 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4630 transitions. Word has length 145 [2020-08-22 06:26:45,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:45,858 INFO L479 AbstractCegarLoop]: Abstraction has 3142 states and 4630 transitions. [2020-08-22 06:26:45,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:26:45,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4630 transitions. [2020-08-22 06:26:45,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 06:26:45,863 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:45,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:26:45,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 06:26:45,864 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:45,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:45,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1966669402, now seen corresponding path program 1 times [2020-08-22 06:26:45,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:45,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809524259] [2020-08-22 06:26:45,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:46,140 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 06:26:46,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:26:46,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809524259] [2020-08-22 06:26:46,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:46,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:26:46,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76312213] [2020-08-22 06:26:46,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:26:46,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:46,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:26:46,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:26:46,219 INFO L87 Difference]: Start difference. First operand 3142 states and 4630 transitions. Second operand 4 states. [2020-08-22 06:26:48,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:48,879 INFO L93 Difference]: Finished difference Result 8922 states and 13174 transitions. [2020-08-22 06:26:48,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 06:26:48,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-22 06:26:48,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:48,907 INFO L225 Difference]: With dead ends: 8922 [2020-08-22 06:26:48,908 INFO L226 Difference]: Without dead ends: 6068 [2020-08-22 06:26:48,915 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 [2020-08-22 06:26:48,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6068 states. [2020-08-22 06:26:49,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6068 to 6066. [2020-08-22 06:26:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6066 states. [2020-08-22 06:26:49,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 8848 transitions. [2020-08-22 06:26:49,313 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 8848 transitions. Word has length 146 [2020-08-22 06:26:49,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:49,314 INFO L479 AbstractCegarLoop]: Abstraction has 6066 states and 8848 transitions. [2020-08-22 06:26:49,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:26:49,314 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 8848 transitions. [2020-08-22 06:26:49,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 06:26:49,326 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:49,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:26:49,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 06:26:49,326 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:49,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:49,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1533440317, now seen corresponding path program 1 times [2020-08-22 06:26:49,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:49,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661326574] [2020-08-22 06:26:49,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:49,674 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 06:26:49,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:26:49,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661326574] [2020-08-22 06:26:49,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:49,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:26:49,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582245471] [2020-08-22 06:26:49,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:26:49,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:49,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:26:49,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:26:49,724 INFO L87 Difference]: Start difference. First operand 6066 states and 8848 transitions. Second operand 5 states. [2020-08-22 06:26:51,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:51,356 INFO L93 Difference]: Finished difference Result 12466 states and 18074 transitions. [2020-08-22 06:26:51,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:26:51,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-22 06:26:51,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:51,393 INFO L225 Difference]: With dead ends: 12466 [2020-08-22 06:26:51,393 INFO L226 Difference]: Without dead ends: 6280 [2020-08-22 06:26:51,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:26:51,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2020-08-22 06:26:51,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 6278. [2020-08-22 06:26:51,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6278 states. [2020-08-22 06:26:51,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 9022 transitions. [2020-08-22 06:26:51,778 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 9022 transitions. Word has length 146 [2020-08-22 06:26:51,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:51,779 INFO L479 AbstractCegarLoop]: Abstraction has 6278 states and 9022 transitions. [2020-08-22 06:26:51,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:26:51,779 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 9022 transitions. [2020-08-22 06:26:51,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 06:26:51,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:51,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:26:51,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 06:26:51,789 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:51,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:51,789 INFO L82 PathProgramCache]: Analyzing trace with hash -400414044, now seen corresponding path program 1 times [2020-08-22 06:26:51,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:51,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300447143] [2020-08-22 06:26:51,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:52,112 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 06:26:52,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:26:52,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300447143] [2020-08-22 06:26:52,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:52,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:26:52,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112277907] [2020-08-22 06:26:52,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:26:52,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:52,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:26:52,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:26:52,177 INFO L87 Difference]: Start difference. First operand 6278 states and 9022 transitions. Second operand 5 states. [2020-08-22 06:26:54,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:54,383 INFO L93 Difference]: Finished difference Result 9166 states and 13176 transitions. [2020-08-22 06:26:54,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:26:54,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-22 06:26:54,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:54,404 INFO L225 Difference]: With dead ends: 9166 [2020-08-22 06:26:54,404 INFO L226 Difference]: Without dead ends: 6280 [2020-08-22 06:26:54,412 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 [2020-08-22 06:26:54,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2020-08-22 06:26:54,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 6066. [2020-08-22 06:26:54,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6066 states. [2020-08-22 06:26:54,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 8760 transitions. [2020-08-22 06:26:54,695 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 8760 transitions. Word has length 146 [2020-08-22 06:26:54,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:54,695 INFO L479 AbstractCegarLoop]: Abstraction has 6066 states and 8760 transitions. [2020-08-22 06:26:54,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:26:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 8760 transitions. [2020-08-22 06:26:54,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 06:26:54,705 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:54,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:26:54,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 06:26:54,705 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:54,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:54,706 INFO L82 PathProgramCache]: Analyzing trace with hash -946102129, now seen corresponding path program 1 times [2020-08-22 06:26:54,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:54,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918279641] [2020-08-22 06:26:54,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:54,913 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 06:26:54,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:26:54,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918279641] [2020-08-22 06:26:54,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:54,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:26:54,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223573048] [2020-08-22 06:26:54,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:26:54,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:54,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:26:54,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:26:54,945 INFO L87 Difference]: Start difference. First operand 6066 states and 8760 transitions. Second operand 4 states. [2020-08-22 06:26:56,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:56,741 INFO L93 Difference]: Finished difference Result 14910 states and 21518 transitions. [2020-08-22 06:26:56,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 06:26:56,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-08-22 06:26:56,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:56,767 INFO L225 Difference]: With dead ends: 14910 [2020-08-22 06:26:56,767 INFO L226 Difference]: Without dead ends: 12024 [2020-08-22 06:26:56,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:26:56,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12024 states. [2020-08-22 06:26:57,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12024 to 6074. [2020-08-22 06:26:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6074 states. [2020-08-22 06:26:57,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 8768 transitions. [2020-08-22 06:26:57,284 INFO L78 Accepts]: Start accepts. Automaton has 6074 states and 8768 transitions. Word has length 147 [2020-08-22 06:26:57,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:57,284 INFO L479 AbstractCegarLoop]: Abstraction has 6074 states and 8768 transitions. [2020-08-22 06:26:57,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:26:57,284 INFO L276 IsEmpty]: Start isEmpty. Operand 6074 states and 8768 transitions. [2020-08-22 06:26:57,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 06:26:57,293 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:57,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:26:57,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 06:26:57,294 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:57,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:57,294 INFO L82 PathProgramCache]: Analyzing trace with hash 585736260, now seen corresponding path program 1 times [2020-08-22 06:26:57,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:57,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183417075] [2020-08-22 06:26:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:57,586 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 06:26:57,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:26:57,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183417075] [2020-08-22 06:26:57,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:57,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:26:57,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43779689] [2020-08-22 06:26:57,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:26:57,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:57,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:26:57,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:26:57,645 INFO L87 Difference]: Start difference. First operand 6074 states and 8768 transitions. Second operand 5 states. [2020-08-22 06:27:00,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:27:00,113 INFO L93 Difference]: Finished difference Result 17704 states and 25485 transitions. [2020-08-22 06:27:00,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:27:00,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-22 06:27:00,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:27:00,136 INFO L225 Difference]: With dead ends: 17704 [2020-08-22 06:27:00,136 INFO L226 Difference]: Without dead ends: 11677 [2020-08-22 06:27:00,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:27:00,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11677 states. [2020-08-22 06:27:00,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11677 to 11675. [2020-08-22 06:27:00,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11675 states. [2020-08-22 06:27:00,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11675 states to 11675 states and 16612 transitions. [2020-08-22 06:27:00,740 INFO L78 Accepts]: Start accepts. Automaton has 11675 states and 16612 transitions. Word has length 148 [2020-08-22 06:27:00,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:27:00,741 INFO L479 AbstractCegarLoop]: Abstraction has 11675 states and 16612 transitions. [2020-08-22 06:27:00,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:27:00,741 INFO L276 IsEmpty]: Start isEmpty. Operand 11675 states and 16612 transitions. [2020-08-22 06:27:00,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 06:27:00,755 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:27:00,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:27:00,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 06:27:00,756 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:27:00,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:27:00,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1497708571, now seen corresponding path program 1 times [2020-08-22 06:27:00,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:27:00,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473413469] [2020-08-22 06:27:00,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:27:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 06:27:00,823 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 06:27:00,823 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:27:00,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 06:27:01,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:27:01 BoogieIcfgContainer [2020-08-22 06:27:01,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:27:01,139 INFO L168 Benchmark]: Toolchain (without parser) took 34587.34 ms. Allocated memory was 137.4 MB in the beginning and 985.1 MB in the end (delta: 847.8 MB). Free memory was 98.8 MB in the beginning and 950.7 MB in the end (delta: -851.9 MB). Peak memory consumption was 777.8 MB. Max. memory is 7.1 GB. [2020-08-22 06:27:01,140 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 06:27:01,140 INFO L168 Benchmark]: CACSL2BoogieTranslator took 917.61 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 98.6 MB in the beginning and 167.0 MB in the end (delta: -68.3 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. [2020-08-22 06:27:01,141 INFO L168 Benchmark]: Boogie Preprocessor took 90.85 ms. Allocated memory is still 200.3 MB. Free memory was 167.0 MB in the beginning and 163.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:27:01,142 INFO L168 Benchmark]: RCFGBuilder took 1485.13 ms. Allocated memory was 200.3 MB in the beginning and 229.1 MB in the end (delta: 28.8 MB). Free memory was 162.5 MB in the beginning and 155.0 MB in the end (delta: 7.6 MB). Peak memory consumption was 87.1 MB. Max. memory is 7.1 GB. [2020-08-22 06:27:01,142 INFO L168 Benchmark]: TraceAbstraction took 32087.19 ms. Allocated memory was 229.1 MB in the beginning and 985.1 MB in the end (delta: 756.0 MB). Free memory was 153.5 MB in the beginning and 950.7 MB in the end (delta: -797.2 MB). Peak memory consumption was 740.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:27:01,145 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 917.61 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 98.6 MB in the beginning and 167.0 MB in the end (delta: -68.3 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.85 ms. Allocated memory is still 200.3 MB. Free memory was 167.0 MB in the beginning and 163.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1485.13 ms. Allocated memory was 200.3 MB in the beginning and 229.1 MB in the end (delta: 28.8 MB). Free memory was 162.5 MB in the beginning and 155.0 MB in the end (delta: 7.6 MB). Peak memory consumption was 87.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32087.19 ms. Allocated memory was 229.1 MB in the beginning and 985.1 MB in the end (delta: 756.0 MB). Free memory was 153.5 MB in the beginning and 950.7 MB in the end (delta: -797.2 MB). Peak memory consumption was 740.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 813]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] char id2 = '\x0'; [L47] char r2 = '\x0'; [L48] char st2 = '\x0'; [L49] char nl2 = '\x0'; [L50] char m2 = '\x0'; [L51] char max2 = '\x0'; [L52] _Bool mode2 = 0; [L53] char id3 = '\x0'; [L54] char r3 = '\x0'; [L55] char st3 = '\x0'; [L56] char nl3 = '\x0'; [L57] char m3 = '\x0'; [L58] char max3 = '\x0'; [L59] _Bool mode3 = 0; [L63] void (*nodes[3])() = { &node1, &node2, &node3 }; [L67] int __return_1708; [L68] int __return_1836; [L69] int __return_1954; [L70] int __return_2075; [L71] int __return_2198; [L72] int __tmp_2199_0; [L73] int __return_2307; [L74] int __return_2212; [L77] int main__c1; [L78] int main__i2; [L79] main__c1 = 0 [L80] ep12 = __VERIFIER_nondet_bool() [L81] ep13 = __VERIFIER_nondet_bool() [L82] ep21 = __VERIFIER_nondet_bool() [L83] ep23 = __VERIFIER_nondet_bool() [L84] ep31 = __VERIFIER_nondet_bool() [L85] ep32 = __VERIFIER_nondet_bool() [L86] id1 = __VERIFIER_nondet_char() [L87] r1 = __VERIFIER_nondet_char() [L88] st1 = __VERIFIER_nondet_char() [L89] nl1 = __VERIFIER_nondet_char() [L90] m1 = __VERIFIER_nondet_char() [L91] max1 = __VERIFIER_nondet_char() [L92] mode1 = __VERIFIER_nondet_bool() [L93] id2 = __VERIFIER_nondet_char() [L94] r2 = __VERIFIER_nondet_char() [L95] st2 = __VERIFIER_nondet_char() [L96] nl2 = __VERIFIER_nondet_char() [L97] m2 = __VERIFIER_nondet_char() [L98] max2 = __VERIFIER_nondet_char() [L99] mode2 = __VERIFIER_nondet_bool() [L100] id3 = __VERIFIER_nondet_char() [L101] r3 = __VERIFIER_nondet_char() [L102] st3 = __VERIFIER_nondet_char() [L103] nl3 = __VERIFIER_nondet_char() [L104] m3 = __VERIFIER_nondet_char() [L105] max3 = __VERIFIER_nondet_char() [L106] mode3 = __VERIFIER_nondet_bool() [L108] _Bool init__r121; [L109] _Bool init__r131; [L110] _Bool init__r211; [L111] _Bool init__r231; [L112] _Bool init__r311; [L113] _Bool init__r321; [L114] _Bool init__r122; [L115] int init__tmp; [L116] _Bool init__r132; [L117] int init__tmp___0; [L118] _Bool init__r212; [L119] int init__tmp___1; [L120] _Bool init__r232; [L121] int init__tmp___2; [L122] _Bool init__r312; [L123] int init__tmp___3; [L124] _Bool init__r322; [L125] int init__tmp___4; [L126] int init__tmp___5; [L127] init__r121 = ep12 [L128] init__r131 = ep13 [L129] init__r211 = ep21 [L130] init__r231 = ep23 [L131] init__r311 = ep31 [L132] init__r321 = ep32 [L133] COND FALSE !(!(init__r121 == 0)) [L2223] COND FALSE !(!(init__r131 == 0)) [L2239] init__tmp = 0 [L137] init__r122 = (_Bool)init__tmp [L138] COND FALSE !(!(init__r131 == 0)) [L2200] COND FALSE !(!(init__r121 == 0)) [L2216] init__tmp___0 = 0 [L142] init__r132 = (_Bool)init__tmp___0 [L143] COND FALSE !(!(init__r211 == 0)) [L2177] COND FALSE !(!(init__r231 == 0)) [L2193] init__tmp___1 = 0 [L147] init__r212 = (_Bool)init__tmp___1 [L148] COND FALSE !(!(init__r231 == 0)) [L2154] COND FALSE !(!(init__r211 == 0)) [L2170] init__tmp___2 = 0 [L152] init__r232 = (_Bool)init__tmp___2 [L153] COND FALSE !(!(init__r311 == 0)) [L2131] COND FALSE !(!(init__r321 == 0)) [L2147] init__tmp___3 = 0 [L157] init__r312 = (_Bool)init__tmp___3 [L158] COND FALSE !(!(init__r321 == 0)) [L2108] COND FALSE !(!(init__r311 == 0)) [L2124] init__tmp___4 = 0 [L162] init__r322 = (_Bool)init__tmp___4 [L163] COND TRUE ((int)id1) != ((int)id2) [L165] COND TRUE ((int)id1) != ((int)id3) [L167] COND TRUE ((int)id2) != ((int)id3) [L169] COND TRUE ((int)id1) >= 0 [L171] COND TRUE ((int)id2) >= 0 [L173] COND TRUE ((int)id3) >= 0 [L175] COND TRUE ((int)r1) == 0 [L177] COND TRUE ((int)r2) == 0 [L179] COND TRUE ((int)r3) == 0 [L181] COND TRUE ((int)max1) == ((int)id1) [L183] COND TRUE ((int)max2) == ((int)id2) [L185] COND TRUE ((int)max3) == ((int)id3) [L187] COND TRUE ((int)st1) == 0 [L189] COND TRUE ((int)st2) == 0 [L191] COND TRUE ((int)st3) == 0 [L193] COND TRUE ((int)nl1) == 0 [L195] COND TRUE ((int)nl2) == 0 [L197] COND TRUE ((int)nl3) == 0 [L199] COND TRUE ((int)mode1) == 0 [L201] COND TRUE ((int)mode2) == 0 [L203] COND TRUE ((int)mode3) == 0 [L205] init__tmp___5 = 1 [L206] __return_1708 = init__tmp___5 [L207] main__i2 = __return_1708 [L208] COND TRUE main__i2 != 0 [L210] p12_old = nomsg [L211] p12_new = nomsg [L212] p13_old = nomsg [L213] p13_new = nomsg [L214] p21_old = nomsg [L215] p21_new = nomsg [L216] p23_old = nomsg [L217] p23_new = nomsg [L218] p31_old = nomsg [L219] p31_new = nomsg [L220] p32_old = nomsg [L221] p32_new = nomsg [L222] main__i2 = 0 [L223] COND TRUE main__i2 < 6 [L226] COND FALSE !(!(mode1 == 0)) [L232] COND TRUE ((int)r1) < 2 [L234] COND FALSE !(!(ep12 == 0)) [L245] COND FALSE !(!(ep13 == 0)) [L256] mode1 = 1 [L258] COND FALSE !(!(mode2 == 0)) [L264] COND TRUE ((int)r2) < 2 [L266] COND FALSE !(!(ep21 == 0)) [L277] COND FALSE !(!(ep23 == 0)) [L288] mode2 = 1 [L290] COND FALSE !(!(mode3 == 0)) [L296] COND TRUE ((int)r3) < 2 [L298] COND FALSE !(!(ep31 == 0)) [L309] COND FALSE !(!(ep32 == 0)) [L320] mode3 = 1 [L321] p12_old = p12_new [L322] p12_new = nomsg [L323] p13_old = p13_new [L324] p13_new = nomsg [L325] p21_old = p21_new [L326] p21_new = nomsg [L327] p23_old = p23_new [L328] p23_new = nomsg [L329] p31_old = p31_new [L330] p31_new = nomsg [L331] p32_old = p32_new [L332] p32_new = nomsg [L334] int check__tmp; [L335] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L337] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L339] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L341] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L343] COND FALSE !(((int)r1) >= 2) [L349] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L351] COND TRUE ((int)r1) < 2 [L353] COND FALSE !(((int)r1) >= 2) [L359] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L361] COND TRUE ((int)r1) < 2 [L363] check__tmp = 1 [L364] __return_1836 = check__tmp [L365] main__c1 = __return_1836 [L367] _Bool __tmp_1; [L368] __tmp_1 = main__c1 [L369] _Bool assert__arg; [L370] assert__arg = __tmp_1 [L371] COND FALSE !(assert__arg == 0) [L377] int main____CPAchecker_TMP_0 = main__i2; [L378] main__i2 = main__i2 + 1 [L379] COND TRUE main__i2 < 6 [L382] COND TRUE !(mode1 == 0) [L384] r1 = (char)(((int)r1) + 1) [L385] COND FALSE !(!(ep21 == 0)) [L393] COND FALSE !(!(ep31 == 0)) [L401] COND FALSE !(((int)r1) == 2) [L407] mode1 = 0 [L409] COND TRUE !(mode2 == 0) [L411] r2 = (char)(((int)r2) + 1) [L412] COND FALSE !(!(ep12 == 0)) [L420] COND FALSE !(!(ep32 == 0)) [L428] COND FALSE !(((int)r2) == 2) [L434] mode2 = 0 [L436] COND TRUE !(mode3 == 0) [L438] r3 = (char)(((int)r3) + 1) [L439] COND FALSE !(!(ep13 == 0)) [L447] COND FALSE !(!(ep23 == 0)) [L455] COND FALSE !(((int)r3) == 2) [L461] mode3 = 0 [L462] p12_old = p12_new [L463] p12_new = nomsg [L464] p13_old = p13_new [L465] p13_new = nomsg [L466] p21_old = p21_new [L467] p21_new = nomsg [L468] p23_old = p23_new [L469] p23_new = nomsg [L470] p31_old = p31_new [L471] p31_new = nomsg [L472] p32_old = p32_new [L473] p32_new = nomsg [L475] int check__tmp; [L476] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L478] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L480] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L482] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L484] COND FALSE !(((int)r1) >= 2) [L490] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L492] COND TRUE ((int)r1) < 2 [L494] COND FALSE !(((int)r1) >= 2) [L500] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L502] COND TRUE ((int)r1) < 2 [L504] check__tmp = 1 [L505] __return_1954 = check__tmp [L506] main__c1 = __return_1954 [L508] _Bool __tmp_2; [L509] __tmp_2 = main__c1 [L510] _Bool assert__arg; [L511] assert__arg = __tmp_2 [L512] COND FALSE !(assert__arg == 0) [L518] int main____CPAchecker_TMP_0 = main__i2; [L519] main__i2 = main__i2 + 1 [L520] COND TRUE main__i2 < 6 [L523] COND FALSE !(!(mode1 == 0)) [L529] COND TRUE ((int)r1) < 2 [L531] COND FALSE !(!(ep12 == 0)) [L542] COND FALSE !(!(ep13 == 0)) [L553] mode1 = 1 [L555] COND FALSE !(!(mode2 == 0)) [L561] COND TRUE ((int)r2) < 2 [L563] COND FALSE !(!(ep21 == 0)) [L574] COND FALSE !(!(ep23 == 0)) [L585] mode2 = 1 [L587] COND FALSE !(!(mode3 == 0)) [L593] COND TRUE ((int)r3) < 2 [L595] COND FALSE !(!(ep31 == 0)) [L606] COND FALSE !(!(ep32 == 0)) [L617] mode3 = 1 [L618] p12_old = p12_new [L619] p12_new = nomsg [L620] p13_old = p13_new [L621] p13_new = nomsg [L622] p21_old = p21_new [L623] p21_new = nomsg [L624] p23_old = p23_new [L625] p23_new = nomsg [L626] p31_old = p31_new [L627] p31_new = nomsg [L628] p32_old = p32_new [L629] p32_new = nomsg [L631] int check__tmp; [L632] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L634] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L636] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L638] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L640] COND FALSE !(((int)r1) >= 2) [L646] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L648] COND TRUE ((int)r1) < 2 [L650] COND FALSE !(((int)r1) >= 2) [L656] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L658] COND TRUE ((int)r1) < 2 [L660] check__tmp = 1 [L661] __return_2075 = check__tmp [L662] main__c1 = __return_2075 [L664] _Bool __tmp_3; [L665] __tmp_3 = main__c1 [L666] _Bool assert__arg; [L667] assert__arg = __tmp_3 [L668] COND FALSE !(assert__arg == 0) [L674] int main____CPAchecker_TMP_0 = main__i2; [L675] main__i2 = main__i2 + 1 [L676] COND TRUE main__i2 < 6 [L679] COND TRUE !(mode1 == 0) [L681] r1 = (char)(((int)r1) + 1) [L682] COND FALSE !(!(ep21 == 0)) [L690] COND FALSE !(!(ep31 == 0)) [L698] COND TRUE ((int)r1) == 2 [L700] COND TRUE ((int)max1) == ((int)id1) [L702] st1 = 1 [L704] mode1 = 0 [L706] COND TRUE !(mode2 == 0) [L708] r2 = (char)(((int)r2) + 1) [L709] COND FALSE !(!(ep12 == 0)) [L717] COND FALSE !(!(ep32 == 0)) [L725] COND TRUE ((int)r2) == 2 [L727] COND TRUE ((int)max2) == ((int)id2) [L729] st2 = 1 [L731] mode2 = 0 [L733] COND TRUE !(mode3 == 0) [L735] r3 = (char)(((int)r3) + 1) [L736] COND FALSE !(!(ep13 == 0)) [L744] COND FALSE !(!(ep23 == 0)) [L752] COND TRUE ((int)r3) == 2 [L754] COND TRUE ((int)max3) == ((int)id3) [L756] st3 = 1 [L758] mode3 = 0 [L759] p12_old = p12_new [L760] p12_new = nomsg [L761] p13_old = p13_new [L762] p13_new = nomsg [L763] p21_old = p21_new [L764] p21_new = nomsg [L765] p23_old = p23_new [L766] p23_new = nomsg [L767] p31_old = p31_new [L768] p31_new = nomsg [L769] p32_old = p32_new [L770] p32_new = nomsg [L772] int check__tmp; [L773] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1398] check__tmp = 0 [L801] __return_2198 = check__tmp [L802] main__c1 = __return_2198 [L803] __tmp_2199_0 = main____CPAchecker_TMP_0 [L805] main____CPAchecker_TMP_0 = __tmp_2199_0 [L807] _Bool __tmp_4; [L808] __tmp_4 = main__c1 [L809] _Bool assert__arg; [L810] assert__arg = __tmp_4 [L811] COND TRUE assert__arg == 0 [L813] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 308 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 31.7s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 23.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7042 SDtfs, 6766 SDslu, 4400 SDs, 0 SdLazy, 7530 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11675occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 10887 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1739 NumberOfCodeBlocks, 1739 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1580 ConstructedInterpolants, 0 QuantifiedInterpolants, 798711 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...