/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:10:57,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:10:57,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:10:57,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:10:57,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:10:57,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:10:57,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:10:57,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:10:57,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:10:57,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:10:57,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:10:57,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:10:57,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:10:57,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:10:57,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:10:57,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:10:57,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:10:57,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:10:57,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:10:57,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:10:57,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:10:57,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:10:57,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:10:57,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:10:57,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 15:10:57,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:10:57,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:10:57,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:10:57,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:10:57,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:10:57,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:10:57,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:10:57,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:10:57,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:10:57,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:10:57,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:10:57,236 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 [2020-09-24 15:10:57,283 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:10:57,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:10:57,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:10:57,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:10:57,286 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:10:57,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:10:57,287 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:10:57,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:10:57,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:10:57,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:10:57,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:10:57,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:10:57,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:10:57,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:10:57,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:10:57,290 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:10:57,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:10:57,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:10:57,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:10:57,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:10:57,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:10:57,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:10:57,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:10:57,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:10:57,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:10:57,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:10:57,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:10:57,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:10:57,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:10:57,292 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 15:10:57,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:10:57,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:10:57,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:10:57,793 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:10:57,793 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:10:57,794 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 15:10:57,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e63c8dd24/29fad29a12c44b1aad20c5718ab46780/FLAG38477cf2c [2020-09-24 15:10:58,545 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:10:58,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 15:10:58,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e63c8dd24/29fad29a12c44b1aad20c5718ab46780/FLAG38477cf2c [2020-09-24 15:10:58,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e63c8dd24/29fad29a12c44b1aad20c5718ab46780 [2020-09-24 15:10:58,753 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:10:58,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:10:58,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:10:58,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:10:58,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:10:58,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:10:58" (1/1) ... [2020-09-24 15:10:58,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd027cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:58, skipping insertion in model container [2020-09-24 15:10:58,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:10:58" (1/1) ... [2020-09-24 15:10:58,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:10:58,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:10:59,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:10:59,550 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:11:00,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:11:00,103 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:11:00,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:11:00 WrapperNode [2020-09-24 15:11:00,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:11:00,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:11:00,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:11:00,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:11:00,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:11:00" (1/1) ... [2020-09-24 15:11:00,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:11:00" (1/1) ... [2020-09-24 15:11:00,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:11:00" (1/1) ... [2020-09-24 15:11:00,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:11:00" (1/1) ... [2020-09-24 15:11:00,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:11:00" (1/1) ... [2020-09-24 15:11:00,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:11:00" (1/1) ... [2020-09-24 15:11:00,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:11:00" (1/1) ... [2020-09-24 15:11:00,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:11:00,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:11:00,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:11:00,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:11:00,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:11:00" (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 [2020-09-24 15:11:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:11:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:11:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 15:11:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:11:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:11:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 15:11:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 15:11:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 15:11:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 15:11:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 15:11:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 15:11:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 15:11:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 15:11:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 15:11:00,401 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 15:11:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 15:11:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 15:11:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 15:11:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:11:00,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:11:00,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:11:02,512 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:11:02,512 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:11:02,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:11:02 BoogieIcfgContainer [2020-09-24 15:11:02,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:11:02,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:11:02,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:11:02,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:11:02,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:10:58" (1/3) ... [2020-09-24 15:11:02,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc34022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:11:02, skipping insertion in model container [2020-09-24 15:11:02,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:11:00" (2/3) ... [2020-09-24 15:11:02,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc34022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:11:02, skipping insertion in model container [2020-09-24 15:11:02,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:11:02" (3/3) ... [2020-09-24 15:11:02,538 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 15:11:02,550 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:11:02,562 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-24 15:11:02,584 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-24 15:11:02,620 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:11:02,620 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:11:02,620 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:11:02,620 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:11:02,620 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:11:02,620 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:11:02,621 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:11:02,621 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:11:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states. [2020-09-24 15:11:02,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2020-09-24 15:11:02,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:02,711 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:11:02,711 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:02,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:02,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1303335379, now seen corresponding path program 1 times [2020-09-24 15:11:02,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:02,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847752720] [2020-09-24 15:11:02,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:03,956 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 15:11:03,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:11:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:11:04,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847752720] [2020-09-24 15:11:04,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:11:04,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:11:04,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754856100] [2020-09-24 15:11:04,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:11:04,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:11:04,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:11:04,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:11:04,412 INFO L87 Difference]: Start difference. First operand 1233 states. Second operand 4 states. [2020-09-24 15:11:09,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:11:09,461 INFO L93 Difference]: Finished difference Result 2019 states and 2601 transitions. [2020-09-24 15:11:09,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:11:09,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 456 [2020-09-24 15:11:09,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:11:09,496 INFO L225 Difference]: With dead ends: 2019 [2020-09-24 15:11:09,497 INFO L226 Difference]: Without dead ends: 1445 [2020-09-24 15:11:09,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:11:09,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2020-09-24 15:11:09,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1438. [2020-09-24 15:11:09,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2020-09-24 15:11:09,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 1723 transitions. [2020-09-24 15:11:09,638 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 1723 transitions. Word has length 456 [2020-09-24 15:11:09,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:11:09,640 INFO L479 AbstractCegarLoop]: Abstraction has 1438 states and 1723 transitions. [2020-09-24 15:11:09,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:11:09,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 1723 transitions. [2020-09-24 15:11:09,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2020-09-24 15:11:09,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:09,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:11:09,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:11:09,654 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:09,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:09,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1418962381, now seen corresponding path program 1 times [2020-09-24 15:11:09,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:09,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010537471] [2020-09-24 15:11:09,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:10,275 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 15:11:10,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:11:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:10,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:11:10,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010537471] [2020-09-24 15:11:10,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:11:10,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:11:10,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368105440] [2020-09-24 15:11:10,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:11:10,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:11:10,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:11:10,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:11:10,504 INFO L87 Difference]: Start difference. First operand 1438 states and 1723 transitions. Second operand 4 states. [2020-09-24 15:11:14,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:11:14,506 INFO L93 Difference]: Finished difference Result 2635 states and 3268 transitions. [2020-09-24 15:11:14,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:11:14,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 456 [2020-09-24 15:11:14,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:11:14,519 INFO L225 Difference]: With dead ends: 2635 [2020-09-24 15:11:14,519 INFO L226 Difference]: Without dead ends: 2144 [2020-09-24 15:11:14,522 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 [2020-09-24 15:11:14,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2020-09-24 15:11:14,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 2132. [2020-09-24 15:11:14,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2020-09-24 15:11:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2619 transitions. [2020-09-24 15:11:14,586 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2619 transitions. Word has length 456 [2020-09-24 15:11:14,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:11:14,587 INFO L479 AbstractCegarLoop]: Abstraction has 2132 states and 2619 transitions. [2020-09-24 15:11:14,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:11:14,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2619 transitions. [2020-09-24 15:11:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2020-09-24 15:11:14,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:14,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:11:14,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:11:14,595 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:14,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:14,596 INFO L82 PathProgramCache]: Analyzing trace with hash 496290573, now seen corresponding path program 1 times [2020-09-24 15:11:14,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:14,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839427147] [2020-09-24 15:11:14,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:15,157 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 15:11:15,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:11:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:15,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:11:15,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839427147] [2020-09-24 15:11:15,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:11:15,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:11:15,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689165592] [2020-09-24 15:11:15,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:11:15,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:11:15,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:11:15,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:11:15,498 INFO L87 Difference]: Start difference. First operand 2132 states and 2619 transitions. Second operand 5 states. [2020-09-24 15:11:21,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:11:21,839 INFO L93 Difference]: Finished difference Result 5910 states and 7320 transitions. [2020-09-24 15:11:21,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:11:21,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 456 [2020-09-24 15:11:21,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:11:21,858 INFO L225 Difference]: With dead ends: 5910 [2020-09-24 15:11:21,858 INFO L226 Difference]: Without dead ends: 3965 [2020-09-24 15:11:21,862 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 [2020-09-24 15:11:21,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3965 states. [2020-09-24 15:11:21,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3965 to 3834. [2020-09-24 15:11:21,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3834 states. [2020-09-24 15:11:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3834 states to 3834 states and 4742 transitions. [2020-09-24 15:11:21,975 INFO L78 Accepts]: Start accepts. Automaton has 3834 states and 4742 transitions. Word has length 456 [2020-09-24 15:11:21,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:11:21,976 INFO L479 AbstractCegarLoop]: Abstraction has 3834 states and 4742 transitions. [2020-09-24 15:11:21,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:11:21,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3834 states and 4742 transitions. [2020-09-24 15:11:21,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-09-24 15:11:21,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:21,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:11:21,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:11:21,985 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:21,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:21,985 INFO L82 PathProgramCache]: Analyzing trace with hash -695136685, now seen corresponding path program 1 times [2020-09-24 15:11:21,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:21,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603277389] [2020-09-24 15:11:21,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:22,413 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 15:11:22,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:11:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:22,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:11:22,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603277389] [2020-09-24 15:11:22,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:11:22,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:11:22,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271711884] [2020-09-24 15:11:22,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:11:22,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:11:22,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:11:22,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:11:22,572 INFO L87 Difference]: Start difference. First operand 3834 states and 4742 transitions. Second operand 4 states. [2020-09-24 15:11:27,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:11:27,436 INFO L93 Difference]: Finished difference Result 11091 states and 13791 transitions. [2020-09-24 15:11:27,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:11:27,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 457 [2020-09-24 15:11:27,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:11:27,472 INFO L225 Difference]: With dead ends: 11091 [2020-09-24 15:11:27,473 INFO L226 Difference]: Without dead ends: 7478 [2020-09-24 15:11:27,483 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 [2020-09-24 15:11:27,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7478 states. [2020-09-24 15:11:27,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7478 to 3836. [2020-09-24 15:11:27,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3836 states. [2020-09-24 15:11:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 4744 transitions. [2020-09-24 15:11:27,720 INFO L78 Accepts]: Start accepts. Automaton has 3836 states and 4744 transitions. Word has length 457 [2020-09-24 15:11:27,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:11:27,721 INFO L479 AbstractCegarLoop]: Abstraction has 3836 states and 4744 transitions. [2020-09-24 15:11:27,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:11:27,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3836 states and 4744 transitions. [2020-09-24 15:11:27,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-09-24 15:11:27,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:27,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:11:27,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:11:27,735 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:27,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:27,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1387914629, now seen corresponding path program 1 times [2020-09-24 15:11:27,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:27,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362711594] [2020-09-24 15:11:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:28,413 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 15:11:28,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:11:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:28,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:11:28,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362711594] [2020-09-24 15:11:28,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:11:28,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:11:28,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633004002] [2020-09-24 15:11:28,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:11:28,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:11:28,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:11:28,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:11:28,754 INFO L87 Difference]: Start difference. First operand 3836 states and 4744 transitions. Second operand 5 states. [2020-09-24 15:11:35,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:11:35,824 INFO L93 Difference]: Finished difference Result 10854 states and 13468 transitions. [2020-09-24 15:11:35,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:11:35,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 458 [2020-09-24 15:11:35,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:11:35,858 INFO L225 Difference]: With dead ends: 10854 [2020-09-24 15:11:35,858 INFO L226 Difference]: Without dead ends: 7242 [2020-09-24 15:11:35,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:11:35,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7242 states. [2020-09-24 15:11:36,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7242 to 7111. [2020-09-24 15:11:36,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7111 states. [2020-09-24 15:11:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7111 states to 7111 states and 8796 transitions. [2020-09-24 15:11:36,067 INFO L78 Accepts]: Start accepts. Automaton has 7111 states and 8796 transitions. Word has length 458 [2020-09-24 15:11:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:11:36,068 INFO L479 AbstractCegarLoop]: Abstraction has 7111 states and 8796 transitions. [2020-09-24 15:11:36,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:11:36,068 INFO L276 IsEmpty]: Start isEmpty. Operand 7111 states and 8796 transitions. [2020-09-24 15:11:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-09-24 15:11:36,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:36,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:11:36,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:11:36,084 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:36,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:36,084 INFO L82 PathProgramCache]: Analyzing trace with hash -814325817, now seen corresponding path program 1 times [2020-09-24 15:11:36,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:36,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072483972] [2020-09-24 15:11:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:36,500 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 15:11:36,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:11:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:36,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:11:36,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072483972] [2020-09-24 15:11:36,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:11:36,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:11:36,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319433695] [2020-09-24 15:11:36,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:11:36,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:11:36,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:11:36,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:11:36,675 INFO L87 Difference]: Start difference. First operand 7111 states and 8796 transitions. Second operand 4 states. [2020-09-24 15:11:41,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:11:41,373 INFO L93 Difference]: Finished difference Result 20859 states and 25870 transitions. [2020-09-24 15:11:41,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:11:41,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 459 [2020-09-24 15:11:41,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:11:41,416 INFO L225 Difference]: With dead ends: 20859 [2020-09-24 15:11:41,416 INFO L226 Difference]: Without dead ends: 13992 [2020-09-24 15:11:41,431 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 [2020-09-24 15:11:41,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13992 states. [2020-09-24 15:11:41,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13992 to 7115. [2020-09-24 15:11:41,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7115 states. [2020-09-24 15:11:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7115 states to 7115 states and 8800 transitions. [2020-09-24 15:11:41,655 INFO L78 Accepts]: Start accepts. Automaton has 7115 states and 8800 transitions. Word has length 459 [2020-09-24 15:11:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:11:41,655 INFO L479 AbstractCegarLoop]: Abstraction has 7115 states and 8800 transitions. [2020-09-24 15:11:41,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:11:41,656 INFO L276 IsEmpty]: Start isEmpty. Operand 7115 states and 8800 transitions. [2020-09-24 15:11:41,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-09-24 15:11:41,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:41,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:11:41,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:11:41,670 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:41,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:41,670 INFO L82 PathProgramCache]: Analyzing trace with hash 112186533, now seen corresponding path program 1 times [2020-09-24 15:11:41,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:41,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904021027] [2020-09-24 15:11:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:42,256 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 15:11:42,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:11:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:11:42,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904021027] [2020-09-24 15:11:42,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:11:42,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:11:42,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325230365] [2020-09-24 15:11:42,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:11:42,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:11:42,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:11:42,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:11:42,438 INFO L87 Difference]: Start difference. First operand 7115 states and 8800 transitions. Second operand 5 states. [2020-09-24 15:11:48,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:11:48,655 INFO L93 Difference]: Finished difference Result 18958 states and 23459 transitions. [2020-09-24 15:11:48,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:11:48,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 460 [2020-09-24 15:11:48,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:11:48,677 INFO L225 Difference]: With dead ends: 18958 [2020-09-24 15:11:48,678 INFO L226 Difference]: Without dead ends: 12093 [2020-09-24 15:11:48,690 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 [2020-09-24 15:11:48,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12093 states. [2020-09-24 15:11:49,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12093 to 11962. [2020-09-24 15:11:49,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11962 states. [2020-09-24 15:11:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11962 states to 11962 states and 14721 transitions. [2020-09-24 15:11:49,044 INFO L78 Accepts]: Start accepts. Automaton has 11962 states and 14721 transitions. Word has length 460 [2020-09-24 15:11:49,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:11:49,045 INFO L479 AbstractCegarLoop]: Abstraction has 11962 states and 14721 transitions. [2020-09-24 15:11:49,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:11:49,045 INFO L276 IsEmpty]: Start isEmpty. Operand 11962 states and 14721 transitions. [2020-09-24 15:11:49,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-09-24 15:11:49,061 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:49,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:11:49,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 15:11:49,061 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:49,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:49,062 INFO L82 PathProgramCache]: Analyzing trace with hash -19356781, now seen corresponding path program 1 times [2020-09-24 15:11:49,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:49,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307020713] [2020-09-24 15:11:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:49,564 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 15:11:49,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:11:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:11:49,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307020713] [2020-09-24 15:11:49,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:11:49,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:11:49,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140785588] [2020-09-24 15:11:49,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:11:49,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:11:49,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:11:49,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:11:49,761 INFO L87 Difference]: Start difference. First operand 11962 states and 14721 transitions. Second operand 4 states. [2020-09-24 15:11:54,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:11:54,631 INFO L93 Difference]: Finished difference Result 34902 states and 43033 transitions. [2020-09-24 15:11:54,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:11:54,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 461 [2020-09-24 15:11:54,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:11:54,668 INFO L225 Difference]: With dead ends: 34902 [2020-09-24 15:11:54,668 INFO L226 Difference]: Without dead ends: 23598 [2020-09-24 15:11:54,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:11:54,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23598 states. [2020-09-24 15:11:55,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23598 to 11970. [2020-09-24 15:11:55,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11970 states. [2020-09-24 15:11:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11970 states to 11970 states and 14729 transitions. [2020-09-24 15:11:55,100 INFO L78 Accepts]: Start accepts. Automaton has 11970 states and 14729 transitions. Word has length 461 [2020-09-24 15:11:55,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:11:55,100 INFO L479 AbstractCegarLoop]: Abstraction has 11970 states and 14729 transitions. [2020-09-24 15:11:55,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:11:55,101 INFO L276 IsEmpty]: Start isEmpty. Operand 11970 states and 14729 transitions. [2020-09-24 15:11:55,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-09-24 15:11:55,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:55,116 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:11:55,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 15:11:55,117 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:55,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:55,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1853568403, now seen corresponding path program 1 times [2020-09-24 15:11:55,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:55,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288686854] [2020-09-24 15:11:55,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:11:55,243 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:11:55,244 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:11:55,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 15:11:55,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:11:55 BoogieIcfgContainer [2020-09-24 15:11:55,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:11:55,349 INFO L168 Benchmark]: Toolchain (without parser) took 56593.21 ms. Allocated memory was 137.4 MB in the beginning and 1.1 GB in the end (delta: 954.2 MB). Free memory was 98.8 MB in the beginning and 395.1 MB in the end (delta: -296.3 MB). Peak memory consumption was 657.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:11:55,350 INFO L168 Benchmark]: CDTParser took 0.55 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:11:55,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1343.01 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 98.2 MB in the beginning and 157.7 MB in the end (delta: -59.5 MB). Peak memory consumption was 34.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:11:55,351 INFO L168 Benchmark]: Boogie Preprocessor took 189.38 ms. Allocated memory is still 201.9 MB. Free memory was 157.7 MB in the beginning and 152.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:11:55,356 INFO L168 Benchmark]: RCFGBuilder took 2232.58 ms. Allocated memory was 201.9 MB in the beginning and 253.2 MB in the end (delta: 51.4 MB). Free memory was 152.5 MB in the beginning and 198.7 MB in the end (delta: -46.2 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:11:55,357 INFO L168 Benchmark]: TraceAbstraction took 52815.83 ms. Allocated memory was 253.2 MB in the beginning and 1.1 GB in the end (delta: 838.3 MB). Free memory was 196.7 MB in the beginning and 395.1 MB in the end (delta: -198.5 MB). Peak memory consumption was 639.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:11:55,369 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1343.01 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 98.2 MB in the beginning and 157.7 MB in the end (delta: -59.5 MB). Peak memory consumption was 34.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 189.38 ms. Allocated memory is still 201.9 MB. Free memory was 157.7 MB in the beginning and 152.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2232.58 ms. Allocated memory was 201.9 MB in the beginning and 253.2 MB in the end (delta: 51.4 MB). Free memory was 152.5 MB in the beginning and 198.7 MB in the end (delta: -46.2 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 52815.83 ms. Allocated memory was 253.2 MB in the beginning and 1.1 GB in the end (delta: 838.3 MB). Free memory was 196.7 MB in the beginning and 395.1 MB in the end (delta: -198.5 MB). Peak memory consumption was 639.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 892]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L15] msg_t nomsg = (msg_t )-1; [L16] port_t p12 = 0; [L17] char p12_old = '\x0'; [L18] char p12_new = '\x0'; [L19] _Bool ep12 = 0; [L20] port_t p13 = 0; [L21] char p13_old = '\x0'; [L22] char p13_new = '\x0'; [L23] _Bool ep13 = 0; [L24] port_t p21 = 0; [L25] char p21_old = '\x0'; [L26] char p21_new = '\x0'; [L27] _Bool ep21 = 0; [L28] port_t p23 = 0; [L29] char p23_old = '\x0'; [L30] char p23_new = '\x0'; [L31] _Bool ep23 = 0; [L32] port_t p31 = 0; [L33] char p31_old = '\x0'; [L34] char p31_new = '\x0'; [L35] _Bool ep31 = 0; [L36] port_t p32 = 0; [L37] char p32_old = '\x0'; [L38] char p32_new = '\x0'; [L39] _Bool ep32 = 0; [L40] char id1 = '\x0'; [L41] unsigned char r1 = '\x0'; [L42] char st1 = '\x0'; [L43] char nl1 = '\x0'; [L44] char m1 = '\x0'; [L45] char max1 = '\x0'; [L46] _Bool mode1 = 0; [L47] _Bool newmax1 = 0; [L48] char id2 = '\x0'; [L49] unsigned char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] _Bool newmax2 = 0; [L56] char id3 = '\x0'; [L57] unsigned char r3 = '\x0'; [L58] char st3 = '\x0'; [L59] char nl3 = '\x0'; [L60] char m3 = '\x0'; [L61] char max3 = '\x0'; [L62] _Bool mode3 = 0; [L63] _Bool newmax3 = 0; [L67] void (*nodes[3])() = { &node1, &node2, &node3 }; [L71] int __return_1873; [L72] int __return_2019; [L73] int __return_2152; [L74] int __return_2288; [L75] int __return_3084; [L76] int __return_3053; [L77] int __return_2989; [L78] int __return_2955; [L79] int __return_2551; [L80] int __return_2840; [L81] int __return_2806; [L82] int __return_2721; [L83] int __return_2426; [L86] int main__c1; [L87] int main__i2; [L88] main__c1 = 0 [L89] ep12 = __VERIFIER_nondet_bool() [L90] ep13 = __VERIFIER_nondet_bool() [L91] ep21 = __VERIFIER_nondet_bool() [L92] ep23 = __VERIFIER_nondet_bool() [L93] ep31 = __VERIFIER_nondet_bool() [L94] ep32 = __VERIFIER_nondet_bool() [L95] id1 = __VERIFIER_nondet_char() [L96] r1 = __VERIFIER_nondet_uchar() [L97] st1 = __VERIFIER_nondet_char() [L98] nl1 = __VERIFIER_nondet_char() [L99] m1 = __VERIFIER_nondet_char() [L100] max1 = __VERIFIER_nondet_char() [L101] mode1 = __VERIFIER_nondet_bool() [L102] newmax1 = __VERIFIER_nondet_bool() [L103] id2 = __VERIFIER_nondet_char() [L104] r2 = __VERIFIER_nondet_uchar() [L105] st2 = __VERIFIER_nondet_char() [L106] nl2 = __VERIFIER_nondet_char() [L107] m2 = __VERIFIER_nondet_char() [L108] max2 = __VERIFIER_nondet_char() [L109] mode2 = __VERIFIER_nondet_bool() [L110] newmax2 = __VERIFIER_nondet_bool() [L111] id3 = __VERIFIER_nondet_char() [L112] r3 = __VERIFIER_nondet_uchar() [L113] st3 = __VERIFIER_nondet_char() [L114] nl3 = __VERIFIER_nondet_char() [L115] m3 = __VERIFIER_nondet_char() [L116] max3 = __VERIFIER_nondet_char() [L117] mode3 = __VERIFIER_nondet_bool() [L118] newmax3 = __VERIFIER_nondet_bool() [L120] _Bool init__r121; [L121] _Bool init__r131; [L122] _Bool init__r211; [L123] _Bool init__r231; [L124] _Bool init__r311; [L125] _Bool init__r321; [L126] _Bool init__r122; [L127] int init__tmp; [L128] _Bool init__r132; [L129] int init__tmp___0; [L130] _Bool init__r212; [L131] int init__tmp___1; [L132] _Bool init__r232; [L133] int init__tmp___2; [L134] _Bool init__r312; [L135] int init__tmp___3; [L136] _Bool init__r322; [L137] int init__tmp___4; [L138] int init__tmp___5; [L139] init__r121 = ep12 [L140] init__r131 = ep13 [L141] init__r211 = ep21 [L142] init__r231 = ep23 [L143] init__r311 = ep31 [L144] init__r321 = ep32 [L145] COND FALSE !(!(init__r121 == 0)) [L3186] COND FALSE !(!(init__r131 == 0)) [L3202] init__tmp = 0 [L149] init__r122 = (_Bool)init__tmp [L150] COND FALSE !(!(init__r131 == 0)) [L3163] COND FALSE !(!(init__r121 == 0)) [L3179] init__tmp___0 = 0 [L154] init__r132 = (_Bool)init__tmp___0 [L155] COND FALSE !(!(init__r211 == 0)) [L3140] COND FALSE !(!(init__r231 == 0)) [L3156] init__tmp___1 = 0 [L159] init__r212 = (_Bool)init__tmp___1 [L160] COND FALSE !(!(init__r231 == 0)) [L3117] COND FALSE !(!(init__r211 == 0)) [L3133] init__tmp___2 = 0 [L164] init__r232 = (_Bool)init__tmp___2 [L165] COND FALSE !(!(init__r311 == 0)) [L3094] COND FALSE !(!(init__r321 == 0)) [L3110] init__tmp___3 = 0 [L169] init__r312 = (_Bool)init__tmp___3 [L170] COND FALSE !(!(init__r321 == 0)) [L3071] COND FALSE !(!(init__r311 == 0)) [L3087] init__tmp___4 = 0 [L174] init__r322 = (_Bool)init__tmp___4 [L175] COND TRUE ((int)id1) != ((int)id2) [L177] COND TRUE ((int)id1) != ((int)id3) [L179] COND TRUE ((int)id2) != ((int)id3) [L181] COND TRUE ((int)id1) >= 0 [L183] COND TRUE ((int)id2) >= 0 [L185] COND TRUE ((int)id3) >= 0 [L187] COND TRUE ((int)r1) == 0 [L189] COND TRUE ((int)r2) == 0 [L191] COND TRUE ((int)r3) == 0 [L193] COND TRUE ((int)max1) == ((int)id1) [L195] COND TRUE ((int)max2) == ((int)id2) [L197] COND TRUE ((int)max3) == ((int)id3) [L199] COND TRUE ((int)st1) == 0 [L201] COND TRUE ((int)st2) == 0 [L203] COND TRUE ((int)st3) == 0 [L205] COND TRUE ((int)nl1) == 0 [L207] COND TRUE ((int)nl2) == 0 [L209] COND TRUE ((int)nl3) == 0 [L211] COND TRUE ((int)mode1) == 0 [L213] COND TRUE ((int)mode2) == 0 [L215] COND TRUE ((int)mode3) == 0 [L217] COND TRUE !(newmax1 == 0) [L219] COND TRUE !(newmax2 == 0) [L221] COND TRUE !(newmax3 == 0) [L223] init__tmp___5 = 1 [L224] __return_1873 = init__tmp___5 [L225] main__i2 = __return_1873 [L226] COND TRUE main__i2 != 0 [L228] p12_old = nomsg [L229] p12_new = nomsg [L230] p13_old = nomsg [L231] p13_new = nomsg [L232] p21_old = nomsg [L233] p21_new = nomsg [L234] p23_old = nomsg [L235] p23_new = nomsg [L236] p31_old = nomsg [L237] p31_new = nomsg [L238] p32_old = nomsg [L239] p32_new = nomsg [L240] main__i2 = 0 [L242] _Bool node1__newmax; [L243] node1__newmax = 0 [L244] COND FALSE !(!(mode1 == 0)) [L250] COND TRUE ((int)r1) < 2 [L252] COND FALSE !(!(ep12 == 0)) [L265] COND FALSE !(!(ep13 == 0)) [L278] mode1 = 1 [L280] _Bool node2__newmax; [L281] node2__newmax = 0 [L282] COND FALSE !(!(mode2 == 0)) [L288] COND TRUE ((int)r2) < 2 [L290] COND FALSE !(!(ep21 == 0)) [L303] COND FALSE !(!(ep23 == 0)) [L316] mode2 = 1 [L318] _Bool node3__newmax; [L319] node3__newmax = 0 [L320] COND FALSE !(!(mode3 == 0)) [L326] COND TRUE ((int)r3) < 2 [L328] COND FALSE !(!(ep31 == 0)) [L341] COND FALSE !(!(ep32 == 0)) [L354] mode3 = 1 [L355] p12_old = p12_new [L356] p12_new = nomsg [L357] p13_old = p13_new [L358] p13_new = nomsg [L359] p21_old = p21_new [L360] p21_new = nomsg [L361] p23_old = p23_new [L362] p23_new = nomsg [L363] p31_old = p31_new [L364] p31_new = nomsg [L365] p32_old = p32_new [L366] p32_new = nomsg [L368] int check__tmp; [L369] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L371] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L373] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L375] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L377] COND FALSE !(((int)r1) >= 2) [L383] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L385] COND TRUE ((int)r1) < 2 [L387] COND FALSE !(((int)r1) >= 2) [L393] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L395] COND TRUE ((int)r1) < 2 [L397] check__tmp = 1 [L398] __return_2019 = check__tmp [L399] main__c1 = __return_2019 [L401] _Bool __tmp_1; [L402] __tmp_1 = main__c1 [L403] _Bool assert__arg; [L404] assert__arg = __tmp_1 [L405] COND FALSE !(assert__arg == 0) [L412] _Bool node1__newmax; [L413] node1__newmax = 0 [L414] COND TRUE !(mode1 == 0) [L416] COND FALSE !(r1 == 255) [L422] r1 = r1 + 1 [L423] COND FALSE !(!(ep21 == 0)) [L432] COND FALSE !(!(ep31 == 0)) [L441] newmax1 = node1__newmax [L442] COND FALSE !(((int)r1) == 2) [L448] mode1 = 0 [L450] _Bool node2__newmax; [L451] node2__newmax = 0 [L452] COND TRUE !(mode2 == 0) [L454] COND FALSE !(r2 == 255) [L460] r2 = r2 + 1 [L461] COND FALSE !(!(ep12 == 0)) [L470] COND FALSE !(!(ep32 == 0)) [L479] newmax2 = node2__newmax [L480] COND FALSE !(((int)r2) == 2) [L486] mode2 = 0 [L488] _Bool node3__newmax; [L489] node3__newmax = 0 [L490] COND TRUE !(mode3 == 0) [L492] COND FALSE !(r3 == 255) [L498] r3 = r3 + 1 [L499] COND FALSE !(!(ep13 == 0)) [L508] COND FALSE !(!(ep23 == 0)) [L517] newmax3 = node3__newmax [L518] COND FALSE !(((int)r3) == 2) [L524] mode3 = 0 [L525] p12_old = p12_new [L526] p12_new = nomsg [L527] p13_old = p13_new [L528] p13_new = nomsg [L529] p21_old = p21_new [L530] p21_new = nomsg [L531] p23_old = p23_new [L532] p23_new = nomsg [L533] p31_old = p31_new [L534] p31_new = nomsg [L535] p32_old = p32_new [L536] p32_new = nomsg [L538] int check__tmp; [L539] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L541] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L543] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L545] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L547] COND FALSE !(((int)r1) >= 2) [L553] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L555] COND TRUE ((int)r1) < 2 [L557] COND FALSE !(((int)r1) >= 2) [L563] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L565] COND TRUE ((int)r1) < 2 [L567] check__tmp = 1 [L568] __return_2152 = check__tmp [L569] main__c1 = __return_2152 [L571] _Bool __tmp_2; [L572] __tmp_2 = main__c1 [L573] _Bool assert__arg; [L574] assert__arg = __tmp_2 [L575] COND FALSE !(assert__arg == 0) [L582] _Bool node1__newmax; [L583] node1__newmax = 0 [L584] COND FALSE !(!(mode1 == 0)) [L590] COND TRUE ((int)r1) < 2 [L592] COND FALSE !(!(ep12 == 0)) [L605] COND FALSE !(!(ep13 == 0)) [L618] mode1 = 1 [L620] _Bool node2__newmax; [L621] node2__newmax = 0 [L622] COND FALSE !(!(mode2 == 0)) [L628] COND TRUE ((int)r2) < 2 [L630] COND FALSE !(!(ep21 == 0)) [L643] COND FALSE !(!(ep23 == 0)) [L656] mode2 = 1 [L658] _Bool node3__newmax; [L659] node3__newmax = 0 [L660] COND FALSE !(!(mode3 == 0)) [L666] COND TRUE ((int)r3) < 2 [L668] COND FALSE !(!(ep31 == 0)) [L681] COND FALSE !(!(ep32 == 0)) [L694] mode3 = 1 [L695] p12_old = p12_new [L696] p12_new = nomsg [L697] p13_old = p13_new [L698] p13_new = nomsg [L699] p21_old = p21_new [L700] p21_new = nomsg [L701] p23_old = p23_new [L702] p23_new = nomsg [L703] p31_old = p31_new [L704] p31_new = nomsg [L705] p32_old = p32_new [L706] p32_new = nomsg [L708] int check__tmp; [L709] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L711] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L713] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L715] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L717] COND FALSE !(((int)r1) >= 2) [L723] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L725] COND TRUE ((int)r1) < 2 [L727] COND FALSE !(((int)r1) >= 2) [L733] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L735] COND TRUE ((int)r1) < 2 [L737] check__tmp = 1 [L738] __return_2288 = check__tmp [L739] main__c1 = __return_2288 [L741] _Bool __tmp_3; [L742] __tmp_3 = main__c1 [L743] _Bool assert__arg; [L744] assert__arg = __tmp_3 [L745] COND FALSE !(assert__arg == 0) [L752] _Bool node1__newmax; [L753] node1__newmax = 0 [L754] COND TRUE !(mode1 == 0) [L756] COND FALSE !(r1 == 255) [L762] r1 = r1 + 1 [L763] COND FALSE !(!(ep21 == 0)) [L772] COND FALSE !(!(ep31 == 0)) [L781] newmax1 = node1__newmax [L782] COND TRUE ((int)r1) == 2 [L784] COND TRUE ((int)max1) == ((int)id1) [L786] st1 = 1 [L787] mode1 = 0 [L789] _Bool node2__newmax; [L790] node2__newmax = 0 [L791] COND TRUE !(mode2 == 0) [L793] COND FALSE !(r2 == 255) [L799] r2 = r2 + 1 [L800] COND FALSE !(!(ep12 == 0)) [L809] COND FALSE !(!(ep32 == 0)) [L818] newmax2 = node2__newmax [L819] COND TRUE ((int)r2) == 2 [L821] COND TRUE ((int)max2) == ((int)id2) [L823] st2 = 1 [L824] mode2 = 0 [L826] _Bool node3__newmax; [L827] node3__newmax = 0 [L828] COND TRUE !(mode3 == 0) [L830] COND FALSE !(r3 == 255) [L836] r3 = r3 + 1 [L837] COND FALSE !(!(ep13 == 0)) [L846] COND FALSE !(!(ep23 == 0)) [L855] newmax3 = node3__newmax [L856] COND TRUE ((int)r3) == 2 [L858] COND TRUE ((int)max3) == ((int)id3) [L860] st3 = 1 [L861] mode3 = 0 [L862] p12_old = p12_new [L863] p12_new = nomsg [L864] p13_old = p13_new [L865] p13_new = nomsg [L866] p21_old = p21_new [L867] p21_new = nomsg [L868] p23_old = p23_new [L869] p23_new = nomsg [L870] p31_old = p31_new [L871] p31_new = nomsg [L872] p32_old = p32_new [L873] p32_new = nomsg [L875] int check__tmp; [L876] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L882] check__tmp = 0 [L883] __return_3084 = check__tmp [L884] main__c1 = __return_3084 [L886] _Bool __tmp_4; [L887] __tmp_4 = main__c1 [L888] _Bool assert__arg; [L889] assert__arg = __tmp_4 [L890] COND TRUE assert__arg == 0 [L892] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 1238 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 52.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 43.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13303 SDtfs, 11512 SDslu, 9745 SDs, 0 SdLazy, 13717 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11970occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 22559 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 4125 NumberOfCodeBlocks, 4125 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3655 ConstructedInterpolants, 0 QuantifiedInterpolants, 3527228 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...