/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:38:41,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:38:41,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:38:41,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:38:41,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:38:41,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:38:41,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:38:41,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:38:41,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:38:41,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:38:41,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:38:41,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:38:41,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:38:41,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:38:41,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:38:41,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:38:41,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:38:41,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:38:41,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:38:41,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:38:41,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:38:41,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:38:41,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:38:41,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:38:41,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:38:41,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:38:41,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:38:41,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:38:41,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:38:41,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:38:41,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:38:41,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:38:41,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:38:41,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:38:41,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:38:41,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:38:41,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:38:41,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:38:41,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:38:41,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:38:41,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:38:41,324 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 [2020-09-21 12:38:41,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:38:41,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:38:41,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:38:41,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:38:41,381 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:38:41,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:38:41,382 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:38:41,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:38:41,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:38:41,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:38:41,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:38:41,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:38:41,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:38:41,384 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:38:41,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:38:41,385 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:38:41,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:38:41,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:38:41,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:38:41,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:38:41,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:38:41,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:38:41,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:38:41,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:38:41,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:38:41,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:38:41,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:38:41,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:38:41,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:38:41,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:38:41,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:38:41,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:38:41,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:38:41,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:38:41,886 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:38:41,887 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-21 12:38:41,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/475c1589a/395655e8c4c64ede8dfe846edffea3d2/FLAG21bb4a3a7 [2020-09-21 12:38:42,584 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:38:42,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-21 12:38:42,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/475c1589a/395655e8c4c64ede8dfe846edffea3d2/FLAG21bb4a3a7 [2020-09-21 12:38:42,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/475c1589a/395655e8c4c64ede8dfe846edffea3d2 [2020-09-21 12:38:42,840 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:38:42,846 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:38:42,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:38:42,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:38:42,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:38:42,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:38:42" (1/1) ... [2020-09-21 12:38:42,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e4cf0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:42, skipping insertion in model container [2020-09-21 12:38:42,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:38:42" (1/1) ... [2020-09-21 12:38:42,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:38:42,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:38:43,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:38:43,568 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:38:43,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:38:43,755 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:38:43,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:43 WrapperNode [2020-09-21 12:38:43,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:38:43,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:38:43,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:38:43,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:38:43,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:43" (1/1) ... [2020-09-21 12:38:43,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:43" (1/1) ... [2020-09-21 12:38:43,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:43" (1/1) ... [2020-09-21 12:38:43,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:43" (1/1) ... [2020-09-21 12:38:43,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:43" (1/1) ... [2020-09-21 12:38:43,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:43" (1/1) ... [2020-09-21 12:38:43,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:43" (1/1) ... [2020-09-21 12:38:43,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:38:43,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:38:43,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:38:43,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:38:43,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:43" (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 [2020-09-21 12:38:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:38:43,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:38:43,966 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:38:43,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:38:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:38:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-21 12:38:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-21 12:38:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-21 12:38:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:38:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:38:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-21 12:38:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-21 12:38:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-21 12:38:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-21 12:38:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-21 12:38:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-21 12:38:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-21 12:38:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:38:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:38:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:38:45,268 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:38:45,268 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:38:45,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:38:45 BoogieIcfgContainer [2020-09-21 12:38:45,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:38:45,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:38:45,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:38:45,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:38:45,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:38:42" (1/3) ... [2020-09-21 12:38:45,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78101c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:38:45, skipping insertion in model container [2020-09-21 12:38:45,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:43" (2/3) ... [2020-09-21 12:38:45,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78101c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:38:45, skipping insertion in model container [2020-09-21 12:38:45,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:38:45" (3/3) ... [2020-09-21 12:38:45,290 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-21 12:38:45,302 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:38:45,312 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:38:45,335 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:38:45,368 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:38:45,369 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:38:45,369 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:38:45,369 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:38:45,369 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:38:45,369 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:38:45,369 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:38:45,369 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:38:45,398 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states. [2020-09-21 12:38:45,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-21 12:38:45,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:45,418 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] [2020-09-21 12:38:45,419 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:45,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:45,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1777408137, now seen corresponding path program 1 times [2020-09-21 12:38:45,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:45,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591351410] [2020-09-21 12:38:45,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:46,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:46,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:46,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:46,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:46,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-21 12:38:46,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:38:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-09-21 12:38:46,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:46,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:46,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-21 12:38:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-21 12:38:46,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:38:47,571 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-21 12:38:47,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:47,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:47,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:47,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:47,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:47,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 12:38:47,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:47,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:47,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:47,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:47,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591351410] [2020-09-21 12:38:47,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:47,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:38:47,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557037259] [2020-09-21 12:38:47,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:38:47,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:47,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:38:47,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:38:47,725 INFO L87 Difference]: Start difference. First operand 336 states. Second operand 4 states. [2020-09-21 12:38:48,044 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-09-21 12:38:49,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:49,972 INFO L93 Difference]: Finished difference Result 649 states and 1122 transitions. [2020-09-21 12:38:49,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:38:49,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-09-21 12:38:49,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:49,999 INFO L225 Difference]: With dead ends: 649 [2020-09-21 12:38:49,999 INFO L226 Difference]: Without dead ends: 534 [2020-09-21 12:38:50,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:38:50,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-09-21 12:38:50,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2020-09-21 12:38:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2020-09-21 12:38:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 797 transitions. [2020-09-21 12:38:50,100 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 797 transitions. Word has length 151 [2020-09-21 12:38:50,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:50,101 INFO L479 AbstractCegarLoop]: Abstraction has 532 states and 797 transitions. [2020-09-21 12:38:50,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:38:50,101 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 797 transitions. [2020-09-21 12:38:50,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-21 12:38:50,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:50,107 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] [2020-09-21 12:38:50,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:38:50,107 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:50,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:50,108 INFO L82 PathProgramCache]: Analyzing trace with hash 623105739, now seen corresponding path program 1 times [2020-09-21 12:38:50,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:50,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845945826] [2020-09-21 12:38:50,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:50,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:50,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:50,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:51,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:51,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:51,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:51,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-21 12:38:51,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:38:51,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1149 [2020-09-21 12:38:51,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:51,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:38:51,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:38:51,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:38:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:51,750 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-21 12:38:51,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:51,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:51,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:51,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:51,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:51,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:38:51,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:51,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:51,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:51,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845945826] [2020-09-21 12:38:51,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:51,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:38:51,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117150176] [2020-09-21 12:38:51,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:38:51,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:51,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:38:51,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:38:51,843 INFO L87 Difference]: Start difference. First operand 532 states and 797 transitions. Second operand 5 states. [2020-09-21 12:38:54,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:54,557 INFO L93 Difference]: Finished difference Result 1527 states and 2280 transitions. [2020-09-21 12:38:54,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:38:54,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-09-21 12:38:54,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:54,564 INFO L225 Difference]: With dead ends: 1527 [2020-09-21 12:38:54,565 INFO L226 Difference]: Without dead ends: 1016 [2020-09-21 12:38:54,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:38:54,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2020-09-21 12:38:54,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1014. [2020-09-21 12:38:54,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2020-09-21 12:38:54,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1503 transitions. [2020-09-21 12:38:54,634 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1503 transitions. Word has length 151 [2020-09-21 12:38:54,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:54,635 INFO L479 AbstractCegarLoop]: Abstraction has 1014 states and 1503 transitions. [2020-09-21 12:38:54,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:38:54,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1503 transitions. [2020-09-21 12:38:54,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-21 12:38:54,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:54,640 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] [2020-09-21 12:38:54,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:38:54,641 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:54,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:54,641 INFO L82 PathProgramCache]: Analyzing trace with hash 796675069, now seen corresponding path program 1 times [2020-09-21 12:38:54,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:54,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658796368] [2020-09-21 12:38:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:54,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:54,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:55,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:55,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:55,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:55,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:55,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:55,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:55,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-21 12:38:55,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:38:55,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-09-21 12:38:55,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:55,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:55,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:38:55,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:38:55,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:56,076 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-21 12:38:56,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:56,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:56,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:56,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:56,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:56,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 12:38:56,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:56,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:56,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658796368] [2020-09-21 12:38:56,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:56,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:38:56,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659080717] [2020-09-21 12:38:56,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:38:56,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:56,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:38:56,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:38:56,202 INFO L87 Difference]: Start difference. First operand 1014 states and 1503 transitions. Second operand 4 states. [2020-09-21 12:38:59,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:59,327 INFO L93 Difference]: Finished difference Result 2992 states and 4432 transitions. [2020-09-21 12:38:59,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:38:59,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-09-21 12:38:59,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:59,340 INFO L225 Difference]: With dead ends: 2992 [2020-09-21 12:38:59,341 INFO L226 Difference]: Without dead ends: 2006 [2020-09-21 12:38:59,344 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 [2020-09-21 12:38:59,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2020-09-21 12:38:59,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1016. [2020-09-21 12:38:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-09-21 12:38:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1505 transitions. [2020-09-21 12:38:59,418 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1505 transitions. Word has length 152 [2020-09-21 12:38:59,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:59,418 INFO L479 AbstractCegarLoop]: Abstraction has 1016 states and 1505 transitions. [2020-09-21 12:38:59,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:38:59,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1505 transitions. [2020-09-21 12:38:59,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-21 12:38:59,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:59,424 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] [2020-09-21 12:38:59,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:38:59,424 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:59,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:59,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1053529415, now seen corresponding path program 1 times [2020-09-21 12:38:59,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:59,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118330295] [2020-09-21 12:38:59,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:59,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:59,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:59,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:59,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:00,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:00,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:00,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:00,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:00,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:00,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-21 12:39:00,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:39:00,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-09-21 12:39:00,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:39:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 12:39:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-21 12:39:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:39:00,980 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-21 12:39:00,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:00,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:01,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:01,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:01,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:01,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 12:39:01,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:01,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:01,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:39:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:01,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118330295] [2020-09-21 12:39:01,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:01,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:39:01,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430224687] [2020-09-21 12:39:01,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:39:01,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:01,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:39:01,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:01,227 INFO L87 Difference]: Start difference. First operand 1016 states and 1505 transitions. Second operand 4 states. [2020-09-21 12:39:04,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:04,545 INFO L93 Difference]: Finished difference Result 2799 states and 4156 transitions. [2020-09-21 12:39:04,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:39:04,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-09-21 12:39:04,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:04,562 INFO L225 Difference]: With dead ends: 2799 [2020-09-21 12:39:04,562 INFO L226 Difference]: Without dead ends: 1950 [2020-09-21 12:39:04,566 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 [2020-09-21 12:39:04,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2020-09-21 12:39:04,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1948. [2020-09-21 12:39:04,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1948 states. [2020-09-21 12:39:04,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2857 transitions. [2020-09-21 12:39:04,690 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2857 transitions. Word has length 153 [2020-09-21 12:39:04,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:04,696 INFO L479 AbstractCegarLoop]: Abstraction has 1948 states and 2857 transitions. [2020-09-21 12:39:04,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:39:04,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2857 transitions. [2020-09-21 12:39:04,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-21 12:39:04,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:04,701 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] [2020-09-21 12:39:04,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:39:04,703 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:04,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:04,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1287500228, now seen corresponding path program 1 times [2020-09-21 12:39:04,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:04,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776739529] [2020-09-21 12:39:04,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:04,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:05,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:05,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:05,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:05,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:05,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:05,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:05,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-21 12:39:05,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:39:05,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-09-21 12:39:05,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:05,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:39:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:39:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-21 12:39:05,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:06,237 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-21 12:39:06,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:06,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:06,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:06,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:06,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:06,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 12:39:06,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:06,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:06,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:06,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:06,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776739529] [2020-09-21 12:39:06,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:06,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:39:06,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037916500] [2020-09-21 12:39:06,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:39:06,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:06,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:39:06,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:39:06,347 INFO L87 Difference]: Start difference. First operand 1948 states and 2857 transitions. Second operand 5 states. [2020-09-21 12:39:09,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:09,182 INFO L93 Difference]: Finished difference Result 5701 states and 8338 transitions. [2020-09-21 12:39:09,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:39:09,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-21 12:39:09,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:09,202 INFO L225 Difference]: With dead ends: 5701 [2020-09-21 12:39:09,203 INFO L226 Difference]: Without dead ends: 3766 [2020-09-21 12:39:09,208 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 [2020-09-21 12:39:09,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2020-09-21 12:39:09,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3764. [2020-09-21 12:39:09,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3764 states. [2020-09-21 12:39:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5454 transitions. [2020-09-21 12:39:09,407 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5454 transitions. Word has length 153 [2020-09-21 12:39:09,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:09,407 INFO L479 AbstractCegarLoop]: Abstraction has 3764 states and 5454 transitions. [2020-09-21 12:39:09,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:39:09,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5454 transitions. [2020-09-21 12:39:09,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-21 12:39:09,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:09,414 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] [2020-09-21 12:39:09,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:39:09,414 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:09,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:09,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1755657840, now seen corresponding path program 1 times [2020-09-21 12:39:09,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:09,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065363255] [2020-09-21 12:39:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:09,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:09,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:09,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:09,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:10,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:10,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:10,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:10,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-21 12:39:10,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:39:10,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-09-21 12:39:10,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:39:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:39:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:39:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:39:10,752 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-21 12:39:10,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:10,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:10,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:10,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:10,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:10,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:39:10,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:10,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:10,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:10,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065363255] [2020-09-21 12:39:10,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:10,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:39:10,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828609258] [2020-09-21 12:39:10,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:39:10,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:10,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:39:10,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:10,820 INFO L87 Difference]: Start difference. First operand 3764 states and 5454 transitions. Second operand 4 states. [2020-09-21 12:39:12,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:12,992 INFO L93 Difference]: Finished difference Result 11213 states and 16242 transitions. [2020-09-21 12:39:12,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:39:12,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-21 12:39:12,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:13,029 INFO L225 Difference]: With dead ends: 11213 [2020-09-21 12:39:13,029 INFO L226 Difference]: Without dead ends: 7514 [2020-09-21 12:39:13,040 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 [2020-09-21 12:39:13,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7514 states. [2020-09-21 12:39:13,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7514 to 3766. [2020-09-21 12:39:13,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3766 states. [2020-09-21 12:39:13,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 5456 transitions. [2020-09-21 12:39:13,329 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 5456 transitions. Word has length 154 [2020-09-21 12:39:13,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:13,329 INFO L479 AbstractCegarLoop]: Abstraction has 3766 states and 5456 transitions. [2020-09-21 12:39:13,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:39:13,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 5456 transitions. [2020-09-21 12:39:13,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-21 12:39:13,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:13,338 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] [2020-09-21 12:39:13,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:39:13,339 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:13,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:13,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1351457563, now seen corresponding path program 1 times [2020-09-21 12:39:13,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:13,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293485738] [2020-09-21 12:39:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:13,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:13,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:13,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:14,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:14,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:14,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:14,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:14,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-21 12:39:14,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:39:14,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-09-21 12:39:14,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:39:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:39:14,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-21 12:39:14,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:14,789 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-21 12:39:14,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:14,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:14,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:14,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:14,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:14,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:39:14,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:14,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:14,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:14,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:14,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:14,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293485738] [2020-09-21 12:39:14,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:14,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:39:14,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002558490] [2020-09-21 12:39:14,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:39:14,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:14,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:39:14,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:39:14,880 INFO L87 Difference]: Start difference. First operand 3766 states and 5456 transitions. Second operand 5 states. [2020-09-21 12:39:17,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:17,681 INFO L93 Difference]: Finished difference Result 10936 states and 15779 transitions. [2020-09-21 12:39:17,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:39:17,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-21 12:39:17,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:17,713 INFO L225 Difference]: With dead ends: 10936 [2020-09-21 12:39:17,713 INFO L226 Difference]: Without dead ends: 7254 [2020-09-21 12:39:17,722 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 [2020-09-21 12:39:17,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7254 states. [2020-09-21 12:39:18,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7254 to 7252. [2020-09-21 12:39:18,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7252 states. [2020-09-21 12:39:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7252 states to 7252 states and 10357 transitions. [2020-09-21 12:39:18,137 INFO L78 Accepts]: Start accepts. Automaton has 7252 states and 10357 transitions. Word has length 155 [2020-09-21 12:39:18,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:18,138 INFO L479 AbstractCegarLoop]: Abstraction has 7252 states and 10357 transitions. [2020-09-21 12:39:18,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:39:18,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7252 states and 10357 transitions. [2020-09-21 12:39:18,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-21 12:39:18,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:18,151 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] [2020-09-21 12:39:18,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:39:18,151 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:18,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:18,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1466773962, now seen corresponding path program 1 times [2020-09-21 12:39:18,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:18,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451848246] [2020-09-21 12:39:18,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:18,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:18,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:18,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:18,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:18,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:19,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:19,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:19,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-21 12:39:19,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:39:19,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-09-21 12:39:19,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:39:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 12:39:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:39:19,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:19,591 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-21 12:39:19,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:19,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:19,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:19,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:19,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:19,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:39:19,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:19,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:19,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:19,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:19,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451848246] [2020-09-21 12:39:19,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:19,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:39:19,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942934753] [2020-09-21 12:39:19,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:39:19,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:19,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:39:19,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:19,675 INFO L87 Difference]: Start difference. First operand 7252 states and 10357 transitions. Second operand 4 states. [2020-09-21 12:39:22,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:22,505 INFO L93 Difference]: Finished difference Result 20940 states and 29963 transitions. [2020-09-21 12:39:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:39:22,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-09-21 12:39:22,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:22,543 INFO L225 Difference]: With dead ends: 20940 [2020-09-21 12:39:22,544 INFO L226 Difference]: Without dead ends: 14350 [2020-09-21 12:39:22,557 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 [2020-09-21 12:39:22,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14350 states. [2020-09-21 12:39:22,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14350 to 7276. [2020-09-21 12:39:22,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7276 states. [2020-09-21 12:39:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7276 states to 7276 states and 10389 transitions. [2020-09-21 12:39:22,976 INFO L78 Accepts]: Start accepts. Automaton has 7276 states and 10389 transitions. Word has length 156 [2020-09-21 12:39:22,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:22,976 INFO L479 AbstractCegarLoop]: Abstraction has 7276 states and 10389 transitions. [2020-09-21 12:39:22,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:39:22,977 INFO L276 IsEmpty]: Start isEmpty. Operand 7276 states and 10389 transitions. [2020-09-21 12:39:22,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-21 12:39:22,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:22,988 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] [2020-09-21 12:39:22,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:39:22,988 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:22,989 INFO L82 PathProgramCache]: Analyzing trace with hash -415240646, now seen corresponding path program 1 times [2020-09-21 12:39:22,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:22,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149662253] [2020-09-21 12:39:22,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:23,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:23,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:23,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:23,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:24,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:24,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-21 12:39:24,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:39:24,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-21 12:39:24,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:39:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:39:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-21 12:39:24,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:24,597 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-21 12:39:24,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:24,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:24,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:24,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:24,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:24,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 12:39:24,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:24,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:24,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:39:24,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:24,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149662253] [2020-09-21 12:39:24,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:24,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:39:24,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809685676] [2020-09-21 12:39:24,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:39:24,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:24,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:39:24,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:39:24,919 INFO L87 Difference]: Start difference. First operand 7276 states and 10389 transitions. Second operand 5 states. [2020-09-21 12:39:28,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:28,551 INFO L93 Difference]: Finished difference Result 19768 states and 28337 transitions. [2020-09-21 12:39:28,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:39:28,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-09-21 12:39:28,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:28,578 INFO L225 Difference]: With dead ends: 19768 [2020-09-21 12:39:28,579 INFO L226 Difference]: Without dead ends: 13526 [2020-09-21 12:39:28,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:39:28,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13526 states. [2020-09-21 12:39:29,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13526 to 13524. [2020-09-21 12:39:29,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13524 states. [2020-09-21 12:39:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13524 states to 13524 states and 19103 transitions. [2020-09-21 12:39:29,296 INFO L78 Accepts]: Start accepts. Automaton has 13524 states and 19103 transitions. Word has length 157 [2020-09-21 12:39:29,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:29,296 INFO L479 AbstractCegarLoop]: Abstraction has 13524 states and 19103 transitions. [2020-09-21 12:39:29,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:39:29,297 INFO L276 IsEmpty]: Start isEmpty. Operand 13524 states and 19103 transitions. [2020-09-21 12:39:29,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-21 12:39:29,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:29,322 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] [2020-09-21 12:39:29,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:39:29,322 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:29,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:29,323 INFO L82 PathProgramCache]: Analyzing trace with hash 725013288, now seen corresponding path program 1 times [2020-09-21 12:39:29,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:29,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645660881] [2020-09-21 12:39:29,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:39:29,428 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:39:29,429 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:39:29,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:39:29,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:39:29 BoogieIcfgContainer [2020-09-21 12:39:29,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:39:29,498 INFO L168 Benchmark]: Toolchain (without parser) took 46656.72 ms. Allocated memory was 137.9 MB in the beginning and 941.1 MB in the end (delta: 803.2 MB). Free memory was 99.6 MB in the beginning and 228.9 MB in the end (delta: -129.3 MB). Peak memory consumption was 673.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:39:29,499 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.9 kB). Peak memory consumption was 419.9 kB. Max. memory is 7.1 GB. [2020-09-21 12:39:29,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 909.73 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.2 MB in the beginning and 168.3 MB in the end (delta: -69.1 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:39:29,501 INFO L168 Benchmark]: Boogie Preprocessor took 98.99 ms. Allocated memory is still 202.4 MB. Free memory was 168.3 MB in the beginning and 164.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:39:29,502 INFO L168 Benchmark]: RCFGBuilder took 1422.28 ms. Allocated memory was 202.4 MB in the beginning and 232.3 MB in the end (delta: 29.9 MB). Free memory was 162.9 MB in the beginning and 144.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:39:29,502 INFO L168 Benchmark]: TraceAbstraction took 44216.08 ms. Allocated memory was 232.3 MB in the beginning and 941.1 MB in the end (delta: 708.8 MB). Free memory was 144.4 MB in the beginning and 228.9 MB in the end (delta: -84.5 MB). Peak memory consumption was 624.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:39:29,506 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.9 kB). Peak memory consumption was 419.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 909.73 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.2 MB in the beginning and 168.3 MB in the end (delta: -69.1 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.99 ms. Allocated memory is still 202.4 MB. Free memory was 168.3 MB in the beginning and 164.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1422.28 ms. Allocated memory was 202.4 MB in the beginning and 232.3 MB in the end (delta: 29.9 MB). Free memory was 162.9 MB in the beginning and 144.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 44216.08 ms. Allocated memory was 232.3 MB in the beginning and 941.1 MB in the end (delta: 708.8 MB). Free memory was 144.4 MB in the beginning and 228.9 MB in the end (delta: -84.5 MB). Peak memory consumption was 624.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 891]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] _Bool newmax1 = 0; [L47] char id2 = '\x0'; [L48] char r2 = '\x0'; [L49] char st2 = '\x0'; [L50] char nl2 = '\x0'; [L51] char m2 = '\x0'; [L52] char max2 = '\x0'; [L53] _Bool mode2 = 0; [L54] _Bool newmax2 = 0; [L55] char id3 = '\x0'; [L56] char r3 = '\x0'; [L57] char st3 = '\x0'; [L58] char nl3 = '\x0'; [L59] char m3 = '\x0'; [L60] char max3 = '\x0'; [L61] _Bool mode3 = 0; [L62] _Bool newmax3 = 0; [L66] void (*nodes[3])() = { &node1, &node2, &node3 }; [L70] int __return_1863; [L71] int __return_2009; [L72] int __return_2142; [L73] int __return_2281; [L74] int __return_2419; [L75] int __tmp_2420_0; [L76] int __return_2543; [L77] int __return_2433; [L80] int main__c1; [L81] int main__i2; [L82] main__c1 = 0 [L83] ep12 = __VERIFIER_nondet_bool() [L84] ep13 = __VERIFIER_nondet_bool() [L85] ep21 = __VERIFIER_nondet_bool() [L86] ep23 = __VERIFIER_nondet_bool() [L87] ep31 = __VERIFIER_nondet_bool() [L88] ep32 = __VERIFIER_nondet_bool() [L89] id1 = __VERIFIER_nondet_char() [L90] r1 = __VERIFIER_nondet_char() [L91] st1 = __VERIFIER_nondet_char() [L92] nl1 = __VERIFIER_nondet_char() [L93] m1 = __VERIFIER_nondet_char() [L94] max1 = __VERIFIER_nondet_char() [L95] mode1 = __VERIFIER_nondet_bool() [L96] newmax1 = __VERIFIER_nondet_bool() [L97] id2 = __VERIFIER_nondet_char() [L98] r2 = __VERIFIER_nondet_char() [L99] st2 = __VERIFIER_nondet_char() [L100] nl2 = __VERIFIER_nondet_char() [L101] m2 = __VERIFIER_nondet_char() [L102] max2 = __VERIFIER_nondet_char() [L103] mode2 = __VERIFIER_nondet_bool() [L104] newmax2 = __VERIFIER_nondet_bool() [L105] id3 = __VERIFIER_nondet_char() [L106] r3 = __VERIFIER_nondet_char() [L107] st3 = __VERIFIER_nondet_char() [L108] nl3 = __VERIFIER_nondet_char() [L109] m3 = __VERIFIER_nondet_char() [L110] max3 = __VERIFIER_nondet_char() [L111] mode3 = __VERIFIER_nondet_bool() [L112] newmax3 = __VERIFIER_nondet_bool() [L114] _Bool init__r121; [L115] _Bool init__r131; [L116] _Bool init__r211; [L117] _Bool init__r231; [L118] _Bool init__r311; [L119] _Bool init__r321; [L120] _Bool init__r122; [L121] int init__tmp; [L122] _Bool init__r132; [L123] int init__tmp___0; [L124] _Bool init__r212; [L125] int init__tmp___1; [L126] _Bool init__r232; [L127] int init__tmp___2; [L128] _Bool init__r312; [L129] int init__tmp___3; [L130] _Bool init__r322; [L131] int init__tmp___4; [L132] int init__tmp___5; [L133] init__r121 = ep12 [L134] init__r131 = ep13 [L135] init__r211 = ep21 [L136] init__r231 = ep23 [L137] init__r311 = ep31 [L138] init__r321 = ep32 [L139] COND FALSE !(!(init__r121 == 0)) [L2433] COND FALSE !(!(init__r131 == 0)) [L2449] init__tmp = 0 [L143] init__r122 = (_Bool)init__tmp [L144] COND FALSE !(!(init__r131 == 0)) [L2410] COND FALSE !(!(init__r121 == 0)) [L2426] init__tmp___0 = 0 [L148] init__r132 = (_Bool)init__tmp___0 [L149] COND FALSE !(!(init__r211 == 0)) [L2387] COND FALSE !(!(init__r231 == 0)) [L2403] init__tmp___1 = 0 [L153] init__r212 = (_Bool)init__tmp___1 [L154] COND FALSE !(!(init__r231 == 0)) [L2364] COND FALSE !(!(init__r211 == 0)) [L2380] init__tmp___2 = 0 [L158] init__r232 = (_Bool)init__tmp___2 [L159] COND FALSE !(!(init__r311 == 0)) [L2341] COND FALSE !(!(init__r321 == 0)) [L2357] init__tmp___3 = 0 [L163] init__r312 = (_Bool)init__tmp___3 [L164] COND FALSE !(!(init__r321 == 0)) [L2318] COND FALSE !(!(init__r311 == 0)) [L2334] init__tmp___4 = 0 [L168] init__r322 = (_Bool)init__tmp___4 [L169] COND TRUE ((int)id1) != ((int)id2) [L171] COND TRUE ((int)id1) != ((int)id3) [L173] COND TRUE ((int)id2) != ((int)id3) [L175] COND TRUE ((int)id1) >= 0 [L177] COND TRUE ((int)id2) >= 0 [L179] COND TRUE ((int)id3) >= 0 [L181] COND TRUE ((int)r1) == 0 [L183] COND TRUE ((int)r2) == 0 [L185] COND TRUE ((int)r3) == 0 [L187] COND TRUE ((int)max1) == ((int)id1) [L189] COND TRUE ((int)max2) == ((int)id2) [L191] COND TRUE ((int)max3) == ((int)id3) [L193] COND TRUE ((int)st1) == 0 [L195] COND TRUE ((int)st2) == 0 [L197] COND TRUE ((int)st3) == 0 [L199] COND TRUE ((int)nl1) == 0 [L201] COND TRUE ((int)nl2) == 0 [L203] COND TRUE ((int)nl3) == 0 [L205] COND TRUE ((int)mode1) == 0 [L207] COND TRUE ((int)mode2) == 0 [L209] COND TRUE ((int)mode3) == 0 [L211] COND TRUE !(newmax1 == 0) [L213] COND TRUE !(newmax2 == 0) [L215] COND TRUE !(newmax3 == 0) [L217] init__tmp___5 = 1 [L218] __return_1863 = init__tmp___5 [L219] main__i2 = __return_1863 [L220] COND TRUE main__i2 != 0 [L222] p12_old = nomsg [L223] p12_new = nomsg [L224] p13_old = nomsg [L225] p13_new = nomsg [L226] p21_old = nomsg [L227] p21_new = nomsg [L228] p23_old = nomsg [L229] p23_new = nomsg [L230] p31_old = nomsg [L231] p31_new = nomsg [L232] p32_old = nomsg [L233] p32_new = nomsg [L234] main__i2 = 0 [L235] COND TRUE main__i2 < 6 [L238] _Bool node1__newmax; [L239] node1__newmax = 0 [L240] COND FALSE !(!(mode1 == 0)) [L246] COND TRUE ((int)r1) < 2 [L248] COND FALSE !(!(ep12 == 0)) [L261] COND FALSE !(!(ep13 == 0)) [L274] mode1 = 1 [L276] _Bool node2__newmax; [L277] node2__newmax = 0 [L278] COND FALSE !(!(mode2 == 0)) [L284] COND TRUE ((int)r2) < 2 [L286] COND FALSE !(!(ep21 == 0)) [L299] COND FALSE !(!(ep23 == 0)) [L312] mode2 = 1 [L314] _Bool node3__newmax; [L315] node3__newmax = 0 [L316] COND FALSE !(!(mode3 == 0)) [L322] COND TRUE ((int)r3) < 2 [L324] COND FALSE !(!(ep31 == 0)) [L337] COND FALSE !(!(ep32 == 0)) [L350] mode3 = 1 [L351] p12_old = p12_new [L352] p12_new = nomsg [L353] p13_old = p13_new [L354] p13_new = nomsg [L355] p21_old = p21_new [L356] p21_new = nomsg [L357] p23_old = p23_new [L358] p23_new = nomsg [L359] p31_old = p31_new [L360] p31_new = nomsg [L361] p32_old = p32_new [L362] p32_new = nomsg [L364] int check__tmp; [L365] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L367] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L369] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L371] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L373] COND FALSE !(((int)r1) >= 2) [L379] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L381] COND TRUE ((int)r1) < 2 [L383] COND FALSE !(((int)r1) >= 2) [L389] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L391] COND TRUE ((int)r1) < 2 [L393] check__tmp = 1 [L394] __return_2009 = check__tmp [L395] main__c1 = __return_2009 [L397] _Bool __tmp_1; [L398] __tmp_1 = main__c1 [L399] _Bool assert__arg; [L400] assert__arg = __tmp_1 [L401] COND FALSE !(assert__arg == 0) [L407] int main____CPAchecker_TMP_0 = main__i2; [L408] main__i2 = main__i2 + 1 [L409] COND TRUE main__i2 < 6 [L412] _Bool node1__newmax; [L413] node1__newmax = 0 [L414] COND TRUE !(mode1 == 0) [L416] r1 = (char)(((int)r1) + 1) [L417] COND FALSE !(!(ep21 == 0)) [L426] COND FALSE !(!(ep31 == 0)) [L435] newmax1 = node1__newmax [L436] COND FALSE !(((int)r1) == 2) [L442] mode1 = 0 [L444] _Bool node2__newmax; [L445] node2__newmax = 0 [L446] COND TRUE !(mode2 == 0) [L448] r2 = (char)(((int)r2) + 1) [L449] COND FALSE !(!(ep12 == 0)) [L458] COND FALSE !(!(ep32 == 0)) [L467] newmax2 = node2__newmax [L468] COND FALSE !(((int)r2) == 2) [L474] mode2 = 0 [L476] _Bool node3__newmax; [L477] node3__newmax = 0 [L478] COND TRUE !(mode3 == 0) [L480] r3 = (char)(((int)r3) + 1) [L481] COND FALSE !(!(ep13 == 0)) [L490] COND FALSE !(!(ep23 == 0)) [L499] newmax3 = node3__newmax [L500] COND FALSE !(((int)r3) == 2) [L506] mode3 = 0 [L507] p12_old = p12_new [L508] p12_new = nomsg [L509] p13_old = p13_new [L510] p13_new = nomsg [L511] p21_old = p21_new [L512] p21_new = nomsg [L513] p23_old = p23_new [L514] p23_new = nomsg [L515] p31_old = p31_new [L516] p31_new = nomsg [L517] p32_old = p32_new [L518] p32_new = nomsg [L520] int check__tmp; [L521] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L523] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L525] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L527] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L529] COND FALSE !(((int)r1) >= 2) [L535] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L537] COND TRUE ((int)r1) < 2 [L539] COND FALSE !(((int)r1) >= 2) [L545] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L547] COND TRUE ((int)r1) < 2 [L549] check__tmp = 1 [L550] __return_2142 = check__tmp [L551] main__c1 = __return_2142 [L553] _Bool __tmp_2; [L554] __tmp_2 = main__c1 [L555] _Bool assert__arg; [L556] assert__arg = __tmp_2 [L557] COND FALSE !(assert__arg == 0) [L563] int main____CPAchecker_TMP_0 = main__i2; [L564] main__i2 = main__i2 + 1 [L565] COND TRUE main__i2 < 6 [L568] _Bool node1__newmax; [L569] node1__newmax = 0 [L570] COND FALSE !(!(mode1 == 0)) [L576] COND TRUE ((int)r1) < 2 [L578] COND FALSE !(!(ep12 == 0)) [L591] COND FALSE !(!(ep13 == 0)) [L604] mode1 = 1 [L606] _Bool node2__newmax; [L607] node2__newmax = 0 [L608] COND FALSE !(!(mode2 == 0)) [L614] COND TRUE ((int)r2) < 2 [L616] COND FALSE !(!(ep21 == 0)) [L629] COND FALSE !(!(ep23 == 0)) [L642] mode2 = 1 [L644] _Bool node3__newmax; [L645] node3__newmax = 0 [L646] COND FALSE !(!(mode3 == 0)) [L652] COND TRUE ((int)r3) < 2 [L654] COND FALSE !(!(ep31 == 0)) [L667] COND FALSE !(!(ep32 == 0)) [L680] mode3 = 1 [L681] p12_old = p12_new [L682] p12_new = nomsg [L683] p13_old = p13_new [L684] p13_new = nomsg [L685] p21_old = p21_new [L686] p21_new = nomsg [L687] p23_old = p23_new [L688] p23_new = nomsg [L689] p31_old = p31_new [L690] p31_new = nomsg [L691] p32_old = p32_new [L692] p32_new = nomsg [L694] int check__tmp; [L695] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L697] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L699] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L701] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L703] COND FALSE !(((int)r1) >= 2) [L709] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L711] COND TRUE ((int)r1) < 2 [L713] COND FALSE !(((int)r1) >= 2) [L719] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L721] COND TRUE ((int)r1) < 2 [L723] check__tmp = 1 [L724] __return_2281 = check__tmp [L725] main__c1 = __return_2281 [L727] _Bool __tmp_3; [L728] __tmp_3 = main__c1 [L729] _Bool assert__arg; [L730] assert__arg = __tmp_3 [L731] COND FALSE !(assert__arg == 0) [L737] int main____CPAchecker_TMP_0 = main__i2; [L738] main__i2 = main__i2 + 1 [L739] COND TRUE main__i2 < 6 [L742] _Bool node1__newmax; [L743] node1__newmax = 0 [L744] COND TRUE !(mode1 == 0) [L746] r1 = (char)(((int)r1) + 1) [L747] COND FALSE !(!(ep21 == 0)) [L756] COND FALSE !(!(ep31 == 0)) [L765] newmax1 = node1__newmax [L766] COND TRUE ((int)r1) == 2 [L768] COND TRUE ((int)max1) == ((int)id1) [L770] st1 = 1 [L772] mode1 = 0 [L774] _Bool node2__newmax; [L775] node2__newmax = 0 [L776] COND TRUE !(mode2 == 0) [L778] r2 = (char)(((int)r2) + 1) [L779] COND FALSE !(!(ep12 == 0)) [L788] COND FALSE !(!(ep32 == 0)) [L797] newmax2 = node2__newmax [L798] COND TRUE ((int)r2) == 2 [L800] COND TRUE ((int)max2) == ((int)id2) [L802] st2 = 1 [L804] mode2 = 0 [L806] _Bool node3__newmax; [L807] node3__newmax = 0 [L808] COND TRUE !(mode3 == 0) [L810] r3 = (char)(((int)r3) + 1) [L811] COND FALSE !(!(ep13 == 0)) [L820] COND FALSE !(!(ep23 == 0)) [L829] newmax3 = node3__newmax [L830] COND TRUE ((int)r3) == 2 [L832] COND TRUE ((int)max3) == ((int)id3) [L834] st3 = 1 [L836] mode3 = 0 [L837] p12_old = p12_new [L838] p12_new = nomsg [L839] p13_old = p13_new [L840] p13_new = nomsg [L841] p21_old = p21_new [L842] p21_new = nomsg [L843] p23_old = p23_new [L844] p23_new = nomsg [L845] p31_old = p31_new [L846] p31_new = nomsg [L847] p32_old = p32_new [L848] p32_new = nomsg [L850] int check__tmp; [L851] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1533] check__tmp = 0 [L879] __return_2419 = check__tmp [L880] main__c1 = __return_2419 [L881] __tmp_2420_0 = main____CPAchecker_TMP_0 [L883] main____CPAchecker_TMP_0 = __tmp_2420_0 [L885] _Bool __tmp_4; [L886] __tmp_4 = main__c1 [L887] _Bool assert__arg; [L888] assert__arg = __tmp_4 [L889] COND TRUE assert__arg == 0 [L891] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 340 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 44.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 25.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7134 SDtfs, 6005 SDslu, 4070 SDs, 0 SdLazy, 7492 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13524occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 11824 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 1539 NumberOfCodeBlocks, 1539 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1373 ConstructedInterpolants, 0 QuantifiedInterpolants, 907750 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...