/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:38:27,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:38:27,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:38:27,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:38:27,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:38:27,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:38:27,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:38:27,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:38:27,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:38:27,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:38:27,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:38:27,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:38:27,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:38:27,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:38:27,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:38:27,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:38:27,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:38:27,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:38:27,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:38:27,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:38:27,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:38:27,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:38:27,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:38:27,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:38:27,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:38:27,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:38:27,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:38:27,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:38:27,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:38:27,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:38:27,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:38:27,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:38:27,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:38:27,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:38:27,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:38:27,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:38:27,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:38:27,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:38:27,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:38:27,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:38:27,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:38:27,332 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 05:38:27,362 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:38:27,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:38:27,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:38:27,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:38:27,364 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:38:27,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:38:27,364 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:38:27,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:38:27,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:38:27,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:38:27,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:38:27,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:38:27,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:38:27,368 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:38:27,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:38:27,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:38:27,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:38:27,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:38:27,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:38:27,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:38:27,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:38:27,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:38:27,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:38:27,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:38:27,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:38:27,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:38:27,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:38:27,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:38:27,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:38:27,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:38:27,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:38:27,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:38:27,697 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:38:27,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:38:27,699 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:38:27,700 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-22 05:38:27,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7a8933f8/c8363946dbc64dcc90de96d64179def2/FLAG15976bdee [2020-08-22 05:38:28,260 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:38:28,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-22 05:38:28,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7a8933f8/c8363946dbc64dcc90de96d64179def2/FLAG15976bdee [2020-08-22 05:38:28,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7a8933f8/c8363946dbc64dcc90de96d64179def2 [2020-08-22 05:38:28,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:38:28,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:38:28,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:38:28,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:38:28,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:38:28,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:38:28" (1/1) ... [2020-08-22 05:38:28,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef601eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:38:28, skipping insertion in model container [2020-08-22 05:38:28,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:38:28" (1/1) ... [2020-08-22 05:38:28,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:38:28,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:38:29,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:38:29,357 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:38:29,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:38:29,805 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:38:29,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:38:29 WrapperNode [2020-08-22 05:38:29,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:38:29,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:38:29,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:38:29,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:38:29,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:38:29" (1/1) ... [2020-08-22 05:38:29,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:38:29" (1/1) ... [2020-08-22 05:38:29,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:38:29" (1/1) ... [2020-08-22 05:38:29,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:38:29" (1/1) ... [2020-08-22 05:38:29,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:38:29" (1/1) ... [2020-08-22 05:38:29,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:38:29" (1/1) ... [2020-08-22 05:38:29,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:38:29" (1/1) ... [2020-08-22 05:38:29,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:38:29,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:38:29,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:38:29,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:38:29,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:38:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:38:29,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:38:29,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:38:29,999 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 05:38:29,999 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:38:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:38:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 05:38:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-22 05:38:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-22 05:38:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 05:38:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 05:38:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-22 05:38:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-22 05:38:30,002 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-22 05:38:30,002 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-22 05:38:30,002 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-22 05:38:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-22 05:38:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-22 05:38:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:38:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:38:30,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:38:31,763 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:38:31,764 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 05:38:31,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:38:31 BoogieIcfgContainer [2020-08-22 05:38:31,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:38:31,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:38:31,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:38:31,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:38:31,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:38:28" (1/3) ... [2020-08-22 05:38:31,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b90165a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:38:31, skipping insertion in model container [2020-08-22 05:38:31,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:38:29" (2/3) ... [2020-08-22 05:38:31,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b90165a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:38:31, skipping insertion in model container [2020-08-22 05:38:31,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:38:31" (3/3) ... [2020-08-22 05:38:31,781 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-22 05:38:31,791 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:38:31,799 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-22 05:38:31,814 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-22 05:38:31,840 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:38:31,841 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:38:31,841 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:38:31,841 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:38:31,841 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:38:31,841 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:38:31,841 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:38:31,841 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:38:31,868 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states. [2020-08-22 05:38:31,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 05:38:31,886 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:38:31,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:38:31,888 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:38:31,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:38:31,894 INFO L82 PathProgramCache]: Analyzing trace with hash 604537660, now seen corresponding path program 1 times [2020-08-22 05:38:31,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:38:31,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86397755] [2020-08-22 05:38:31,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:38:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:38:32,937 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 05:38:32,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:38:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:38:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:38:33,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86397755] [2020-08-22 05:38:33,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:38:33,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:38:33,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910798334] [2020-08-22 05:38:33,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:38:33,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:38:33,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:38:33,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:38:33,091 INFO L87 Difference]: Start difference. First operand 412 states. Second operand 4 states. [2020-08-22 05:38:33,392 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-22 05:38:36,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:38:36,200 INFO L93 Difference]: Finished difference Result 754 states and 1320 transitions. [2020-08-22 05:38:36,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:38:36,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-22 05:38:36,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:38:36,224 INFO L225 Difference]: With dead ends: 754 [2020-08-22 05:38:36,225 INFO L226 Difference]: Without dead ends: 593 [2020-08-22 05:38:36,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:38:36,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-08-22 05:38:36,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-08-22 05:38:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-08-22 05:38:36,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 870 transitions. [2020-08-22 05:38:36,321 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 870 transitions. Word has length 146 [2020-08-22 05:38:36,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:38:36,322 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 870 transitions. [2020-08-22 05:38:36,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:38:36,322 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 870 transitions. [2020-08-22 05:38:36,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 05:38:36,331 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:38:36,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:38:36,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:38:36,332 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:38:36,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:38:36,333 INFO L82 PathProgramCache]: Analyzing trace with hash 694944860, now seen corresponding path program 1 times [2020-08-22 05:38:36,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:38:36,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628751666] [2020-08-22 05:38:36,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:38:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:38:36,711 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 05:38:36,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:38:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:38:36,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:38:36,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628751666] [2020-08-22 05:38:36,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:38:36,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:38:36,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486329341] [2020-08-22 05:38:36,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:38:36,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:38:36,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:38:36,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:38:36,759 INFO L87 Difference]: Start difference. First operand 591 states and 870 transitions. Second operand 4 states. [2020-08-22 05:38:37,074 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-22 05:38:39,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:38:39,193 INFO L93 Difference]: Finished difference Result 1190 states and 1805 transitions. [2020-08-22 05:38:39,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:38:39,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-22 05:38:39,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:38:39,208 INFO L225 Difference]: With dead ends: 1190 [2020-08-22 05:38:39,208 INFO L226 Difference]: Without dead ends: 961 [2020-08-22 05:38:39,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:38:39,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-08-22 05:38:39,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 959. [2020-08-22 05:38:39,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-08-22 05:38:39,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1434 transitions. [2020-08-22 05:38:39,292 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1434 transitions. Word has length 146 [2020-08-22 05:38:39,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:38:39,293 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1434 transitions. [2020-08-22 05:38:39,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:38:39,294 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1434 transitions. [2020-08-22 05:38:39,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 05:38:39,302 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:38:39,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:38:39,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:38:39,306 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:38:39,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:38:39,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1369993092, now seen corresponding path program 1 times [2020-08-22 05:38:39,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:38:39,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757144320] [2020-08-22 05:38:39,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:38:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:38:39,785 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 05:38:39,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:38:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:38:39,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:38:39,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757144320] [2020-08-22 05:38:39,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:38:39,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:38:39,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199160735] [2020-08-22 05:38:39,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:38:39,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:38:39,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:38:39,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:38:39,841 INFO L87 Difference]: Start difference. First operand 959 states and 1434 transitions. Second operand 4 states. [2020-08-22 05:38:40,197 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-22 05:38:42,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:38:42,896 INFO L93 Difference]: Finished difference Result 2090 states and 3210 transitions. [2020-08-22 05:38:42,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:38:42,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-22 05:38:42,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:38:42,913 INFO L225 Difference]: With dead ends: 2090 [2020-08-22 05:38:42,913 INFO L226 Difference]: Without dead ends: 1701 [2020-08-22 05:38:42,915 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 [2020-08-22 05:38:42,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2020-08-22 05:38:42,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1699. [2020-08-22 05:38:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-08-22 05:38:43,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2566 transitions. [2020-08-22 05:38:43,006 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2566 transitions. Word has length 146 [2020-08-22 05:38:43,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:38:43,006 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2566 transitions. [2020-08-22 05:38:43,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:38:43,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2566 transitions. [2020-08-22 05:38:43,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 05:38:43,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:38:43,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:38:43,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:38:43,015 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:38:43,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:38:43,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1370331716, now seen corresponding path program 1 times [2020-08-22 05:38:43,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:38:43,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728762898] [2020-08-22 05:38:43,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:38:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:38:43,661 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 05:38:43,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:38:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:38:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:38:43,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728762898] [2020-08-22 05:38:43,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:38:43,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:38:43,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438770436] [2020-08-22 05:38:43,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:38:43,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:38:43,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:38:43,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:38:43,770 INFO L87 Difference]: Start difference. First operand 1699 states and 2566 transitions. Second operand 5 states. [2020-08-22 05:38:47,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:38:47,080 INFO L93 Difference]: Finished difference Result 4967 states and 7485 transitions. [2020-08-22 05:38:47,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:38:47,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-22 05:38:47,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:38:47,103 INFO L225 Difference]: With dead ends: 4967 [2020-08-22 05:38:47,103 INFO L226 Difference]: Without dead ends: 3281 [2020-08-22 05:38:47,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:38:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2020-08-22 05:38:47,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3235. [2020-08-22 05:38:47,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2020-08-22 05:38:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4851 transitions. [2020-08-22 05:38:47,280 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4851 transitions. Word has length 146 [2020-08-22 05:38:47,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:38:47,280 INFO L479 AbstractCegarLoop]: Abstraction has 3235 states and 4851 transitions. [2020-08-22 05:38:47,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:38:47,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4851 transitions. [2020-08-22 05:38:47,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 05:38:47,288 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:38:47,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:38:47,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:38:47,289 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:38:47,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:38:47,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1648495204, now seen corresponding path program 1 times [2020-08-22 05:38:47,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:38:47,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333676464] [2020-08-22 05:38:47,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:38:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:38:47,590 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 05:38:47,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:38:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:38:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:38:47,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333676464] [2020-08-22 05:38:47,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:38:47,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:38:47,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137768645] [2020-08-22 05:38:47,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:38:47,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:38:47,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:38:47,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:38:47,655 INFO L87 Difference]: Start difference. First operand 3235 states and 4851 transitions. Second operand 4 states. [2020-08-22 05:38:50,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:38:50,135 INFO L93 Difference]: Finished difference Result 9659 states and 14483 transitions. [2020-08-22 05:38:50,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:38:50,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-08-22 05:38:50,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:38:50,168 INFO L225 Difference]: With dead ends: 9659 [2020-08-22 05:38:50,168 INFO L226 Difference]: Without dead ends: 6456 [2020-08-22 05:38:50,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:38:50,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2020-08-22 05:38:50,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 3237. [2020-08-22 05:38:50,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-08-22 05:38:50,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4853 transitions. [2020-08-22 05:38:50,398 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4853 transitions. Word has length 147 [2020-08-22 05:38:50,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:38:50,398 INFO L479 AbstractCegarLoop]: Abstraction has 3237 states and 4853 transitions. [2020-08-22 05:38:50,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:38:50,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4853 transitions. [2020-08-22 05:38:50,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 05:38:50,404 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:38:50,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:38:50,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:38:50,405 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:38:50,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:38:50,406 INFO L82 PathProgramCache]: Analyzing trace with hash 921116989, now seen corresponding path program 1 times [2020-08-22 05:38:50,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:38:50,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625138526] [2020-08-22 05:38:50,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:38:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:38:50,757 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 05:38:50,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:38:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:38:50,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:38:50,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625138526] [2020-08-22 05:38:50,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:38:50,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:38:50,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448750745] [2020-08-22 05:38:50,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:38:50,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:38:50,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:38:50,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:38:50,846 INFO L87 Difference]: Start difference. First operand 3237 states and 4853 transitions. Second operand 5 states. [2020-08-22 05:38:53,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:38:53,982 INFO L93 Difference]: Finished difference Result 9441 states and 14115 transitions. [2020-08-22 05:38:53,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:38:53,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-22 05:38:53,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:38:54,011 INFO L225 Difference]: With dead ends: 9441 [2020-08-22 05:38:54,012 INFO L226 Difference]: Without dead ends: 6238 [2020-08-22 05:38:54,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:38:54,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-08-22 05:38:54,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6192. [2020-08-22 05:38:54,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6192 states. [2020-08-22 05:38:54,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9193 transitions. [2020-08-22 05:38:54,298 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9193 transitions. Word has length 148 [2020-08-22 05:38:54,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:38:54,299 INFO L479 AbstractCegarLoop]: Abstraction has 6192 states and 9193 transitions. [2020-08-22 05:38:54,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:38:54,299 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9193 transitions. [2020-08-22 05:38:54,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 05:38:54,311 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:38:54,312 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] [2020-08-22 05:38:54,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:38:54,312 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:38:54,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:38:54,313 INFO L82 PathProgramCache]: Analyzing trace with hash 239618117, now seen corresponding path program 1 times [2020-08-22 05:38:54,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:38:54,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710261716] [2020-08-22 05:38:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:38:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:38:54,698 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 05:38:54,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:38:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:38:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:38:54,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710261716] [2020-08-22 05:38:54,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:38:54,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:38:54,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115979170] [2020-08-22 05:38:54,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:38:54,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:38:54,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:38:54,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:38:54,736 INFO L87 Difference]: Start difference. First operand 6192 states and 9193 transitions. Second operand 4 states. [2020-08-22 05:38:58,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:38:58,176 INFO L93 Difference]: Finished difference Result 18492 states and 27451 transitions. [2020-08-22 05:38:58,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:38:58,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-08-22 05:38:58,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:38:58,224 INFO L225 Difference]: With dead ends: 18492 [2020-08-22 05:38:58,225 INFO L226 Difference]: Without dead ends: 12348 [2020-08-22 05:38:58,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:38:58,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2020-08-22 05:38:58,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 6196. [2020-08-22 05:38:58,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6196 states. [2020-08-22 05:38:58,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 9197 transitions. [2020-08-22 05:38:58,532 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 9197 transitions. Word has length 149 [2020-08-22 05:38:58,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:38:58,532 INFO L479 AbstractCegarLoop]: Abstraction has 6196 states and 9197 transitions. [2020-08-22 05:38:58,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:38:58,532 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 9197 transitions. [2020-08-22 05:38:58,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 05:38:58,541 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:38:58,541 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] [2020-08-22 05:38:58,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:38:58,542 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:38:58,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:38:58,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1772203169, now seen corresponding path program 1 times [2020-08-22 05:38:58,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:38:58,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148243606] [2020-08-22 05:38:58,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:38:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:38:58,852 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 05:38:58,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:38:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:38:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:38:58,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148243606] [2020-08-22 05:38:58,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:38:58,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:38:58,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353501726] [2020-08-22 05:38:58,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:38:58,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:38:58,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:38:58,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:38:58,969 INFO L87 Difference]: Start difference. First operand 6196 states and 9197 transitions. Second operand 4 states. [2020-08-22 05:39:02,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:39:02,365 INFO L93 Difference]: Finished difference Result 16495 states and 24448 transitions. [2020-08-22 05:39:02,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:39:02,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-08-22 05:39:02,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:39:02,387 INFO L225 Difference]: With dead ends: 16495 [2020-08-22 05:39:02,387 INFO L226 Difference]: Without dead ends: 10615 [2020-08-22 05:39:02,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:39:02,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2020-08-22 05:39:02,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 10569. [2020-08-22 05:39:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-22 05:39:02,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15484 transitions. [2020-08-22 05:39:02,788 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15484 transitions. Word has length 150 [2020-08-22 05:39:02,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:39:02,788 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15484 transitions. [2020-08-22 05:39:02,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:39:02,789 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15484 transitions. [2020-08-22 05:39:02,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 05:39:02,802 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:39:02,803 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] [2020-08-22 05:39:02,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:39:02,803 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:39:02,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:39:02,804 INFO L82 PathProgramCache]: Analyzing trace with hash 251552574, now seen corresponding path program 1 times [2020-08-22 05:39:02,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:39:02,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455631447] [2020-08-22 05:39:02,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:39:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:39:03,140 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 05:39:03,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:39:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:39:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:39:03,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455631447] [2020-08-22 05:39:03,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:39:03,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:39:03,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680040142] [2020-08-22 05:39:03,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:39:03,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:39:03,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:39:03,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:39:03,176 INFO L87 Difference]: Start difference. First operand 10569 states and 15484 transitions. Second operand 5 states. [2020-08-22 05:39:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:39:05,613 INFO L93 Difference]: Finished difference Result 21564 states and 31467 transitions. [2020-08-22 05:39:05,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:39:05,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-22 05:39:05,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:39:05,642 INFO L225 Difference]: With dead ends: 21564 [2020-08-22 05:39:05,643 INFO L226 Difference]: Without dead ends: 10851 [2020-08-22 05:39:05,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:39:05,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-22 05:39:06,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10805. [2020-08-22 05:39:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10805 states. [2020-08-22 05:39:06,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 15660 transitions. [2020-08-22 05:39:06,247 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 15660 transitions. Word has length 150 [2020-08-22 05:39:06,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:39:06,247 INFO L479 AbstractCegarLoop]: Abstraction has 10805 states and 15660 transitions. [2020-08-22 05:39:06,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:39:06,247 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 15660 transitions. [2020-08-22 05:39:06,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 05:39:06,261 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:39:06,261 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] [2020-08-22 05:39:06,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:39:06,261 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:39:06,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:39:06,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1535594178, now seen corresponding path program 1 times [2020-08-22 05:39:06,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:39:06,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769159627] [2020-08-22 05:39:06,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:39:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:39:06,606 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 05:39:06,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:39:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:39:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:39:06,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769159627] [2020-08-22 05:39:06,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:39:06,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:39:06,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429835344] [2020-08-22 05:39:06,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:39:06,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:39:06,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:39:06,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:39:06,660 INFO L87 Difference]: Start difference. First operand 10805 states and 15660 transitions. Second operand 5 states. [2020-08-22 05:39:10,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:39:10,213 INFO L93 Difference]: Finished difference Result 15230 states and 22013 transitions. [2020-08-22 05:39:10,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:39:10,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-22 05:39:10,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:39:10,235 INFO L225 Difference]: With dead ends: 15230 [2020-08-22 05:39:10,236 INFO L226 Difference]: Without dead ends: 10851 [2020-08-22 05:39:10,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:39:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-22 05:39:10,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10569. [2020-08-22 05:39:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-22 05:39:10,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15362 transitions. [2020-08-22 05:39:10,704 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15362 transitions. Word has length 150 [2020-08-22 05:39:10,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:39:10,704 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15362 transitions. [2020-08-22 05:39:10,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:39:10,704 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15362 transitions. [2020-08-22 05:39:10,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-22 05:39:10,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:39:10,716 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] [2020-08-22 05:39:10,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:39:10,716 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:39:10,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:39:10,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1232731994, now seen corresponding path program 1 times [2020-08-22 05:39:10,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:39:10,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800716926] [2020-08-22 05:39:10,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:39:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:39:11,096 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 05:39:11,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:39:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:39:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:39:11,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800716926] [2020-08-22 05:39:11,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:39:11,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:39:11,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307487279] [2020-08-22 05:39:11,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:39:11,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:39:11,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:39:11,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:39:11,146 INFO L87 Difference]: Start difference. First operand 10569 states and 15362 transitions. Second operand 4 states. [2020-08-22 05:39:14,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:39:14,860 INFO L93 Difference]: Finished difference Result 25409 states and 36872 transitions. [2020-08-22 05:39:14,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:39:14,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-08-22 05:39:14,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:39:14,887 INFO L225 Difference]: With dead ends: 25409 [2020-08-22 05:39:14,887 INFO L226 Difference]: Without dead ends: 21030 [2020-08-22 05:39:14,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:39:14,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-08-22 05:39:15,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 10577. [2020-08-22 05:39:15,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10577 states. [2020-08-22 05:39:15,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10577 states to 10577 states and 15370 transitions. [2020-08-22 05:39:15,377 INFO L78 Accepts]: Start accepts. Automaton has 10577 states and 15370 transitions. Word has length 151 [2020-08-22 05:39:15,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:39:15,378 INFO L479 AbstractCegarLoop]: Abstraction has 10577 states and 15370 transitions. [2020-08-22 05:39:15,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:39:15,378 INFO L276 IsEmpty]: Start isEmpty. Operand 10577 states and 15370 transitions. [2020-08-22 05:39:15,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 05:39:15,388 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:39:15,389 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] [2020-08-22 05:39:15,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 05:39:15,389 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:39:15,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:39:15,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1234425885, now seen corresponding path program 1 times [2020-08-22 05:39:15,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:39:15,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830352522] [2020-08-22 05:39:15,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:39:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:39:15,720 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 05:39:15,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:39:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:39:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:39:15,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830352522] [2020-08-22 05:39:15,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:39:15,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:39:15,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112964280] [2020-08-22 05:39:15,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:39:15,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:39:15,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:39:15,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:39:15,769 INFO L87 Difference]: Start difference. First operand 10577 states and 15370 transitions. Second operand 5 states. [2020-08-22 05:39:18,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:39:18,857 INFO L93 Difference]: Finished difference Result 30843 states and 44647 transitions. [2020-08-22 05:39:18,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:39:18,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-22 05:39:18,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:39:18,883 INFO L225 Difference]: With dead ends: 30843 [2020-08-22 05:39:18,883 INFO L226 Difference]: Without dead ends: 20313 [2020-08-22 05:39:18,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:39:18,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20313 states. [2020-08-22 05:39:19,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20313 to 20283. [2020-08-22 05:39:19,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20283 states. [2020-08-22 05:39:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20283 states to 20283 states and 29041 transitions. [2020-08-22 05:39:19,823 INFO L78 Accepts]: Start accepts. Automaton has 20283 states and 29041 transitions. Word has length 152 [2020-08-22 05:39:19,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:39:19,823 INFO L479 AbstractCegarLoop]: Abstraction has 20283 states and 29041 transitions. [2020-08-22 05:39:19,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:39:19,824 INFO L276 IsEmpty]: Start isEmpty. Operand 20283 states and 29041 transitions. [2020-08-22 05:39:19,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 05:39:19,838 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:39:19,838 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] [2020-08-22 05:39:19,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 05:39:19,838 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:39:19,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:39:19,839 INFO L82 PathProgramCache]: Analyzing trace with hash -695536157, now seen corresponding path program 1 times [2020-08-22 05:39:19,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:39:19,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854404249] [2020-08-22 05:39:19,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:39:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:39:20,169 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 05:39:20,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:39:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:39:20,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:39:20,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854404249] [2020-08-22 05:39:20,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:39:20,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:39:20,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320755049] [2020-08-22 05:39:20,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:39:20,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:39:20,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:39:20,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:39:20,217 INFO L87 Difference]: Start difference. First operand 20283 states and 29041 transitions. Second operand 5 states. [2020-08-22 05:39:24,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:39:24,459 INFO L93 Difference]: Finished difference Result 54646 states and 77842 transitions. [2020-08-22 05:39:24,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:39:24,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-22 05:39:24,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:39:24,495 INFO L225 Difference]: With dead ends: 54646 [2020-08-22 05:39:24,496 INFO L226 Difference]: Without dead ends: 34484 [2020-08-22 05:39:24,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:39:24,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34484 states. [2020-08-22 05:39:26,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34484 to 34424. [2020-08-22 05:39:26,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34424 states. [2020-08-22 05:39:26,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34424 states to 34424 states and 48378 transitions. [2020-08-22 05:39:26,150 INFO L78 Accepts]: Start accepts. Automaton has 34424 states and 48378 transitions. Word has length 152 [2020-08-22 05:39:26,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:39:26,150 INFO L479 AbstractCegarLoop]: Abstraction has 34424 states and 48378 transitions. [2020-08-22 05:39:26,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:39:26,151 INFO L276 IsEmpty]: Start isEmpty. Operand 34424 states and 48378 transitions. [2020-08-22 05:39:26,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 05:39:26,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:39:26,173 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] [2020-08-22 05:39:26,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 05:39:26,174 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:39:26,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:39:26,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1687005761, now seen corresponding path program 1 times [2020-08-22 05:39:26,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:39:26,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388577932] [2020-08-22 05:39:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:39:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:39:26,243 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:39:26,243 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:39:26,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 05:39:26,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:39:26 BoogieIcfgContainer [2020-08-22 05:39:26,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:39:26,298 INFO L168 Benchmark]: Toolchain (without parser) took 57718.24 ms. Allocated memory was 141.0 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 102.5 MB in the beginning and 1.1 GB in the end (delta: -962.8 MB). Peak memory consumption was 340.6 MB. Max. memory is 7.1 GB. [2020-08-22 05:39:26,299 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 05:39:26,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1225.04 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.3 MB in the beginning and 163.3 MB in the end (delta: -61.0 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. [2020-08-22 05:39:26,300 INFO L168 Benchmark]: Boogie Preprocessor took 118.18 ms. Allocated memory is still 205.0 MB. Free memory was 163.3 MB in the beginning and 157.6 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-08-22 05:39:26,301 INFO L168 Benchmark]: RCFGBuilder took 1847.50 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 157.6 MB in the beginning and 95.7 MB in the end (delta: 61.9 MB). Peak memory consumption was 93.9 MB. Max. memory is 7.1 GB. [2020-08-22 05:39:26,302 INFO L168 Benchmark]: TraceAbstraction took 54522.89 ms. Allocated memory was 237.0 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 95.7 MB in the beginning and 1.1 GB in the end (delta: -969.6 MB). Peak memory consumption was 237.8 MB. Max. memory is 7.1 GB. [2020-08-22 05:39:26,305 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 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1225.04 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.3 MB in the beginning and 163.3 MB in the end (delta: -61.0 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.18 ms. Allocated memory is still 205.0 MB. Free memory was 163.3 MB in the beginning and 157.6 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1847.50 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 157.6 MB in the beginning and 95.7 MB in the end (delta: 61.9 MB). Peak memory consumption was 93.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 54522.89 ms. Allocated memory was 237.0 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 95.7 MB in the beginning and 1.1 GB in the end (delta: -969.6 MB). Peak memory consumption was 237.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 871]: 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_3069; [L75] int __return_3038; [L76] int __return_2975; [L77] int __return_2941; [L78] int __tmp_2420_0; [L79] int __return_2543; [L80] int __return_2433; [L81] int __return_2828; [L82] int __return_2794; [L83] int __return_2710; [L84] int __return_2419; [L87] int main__c1; [L88] int main__i2; [L89] main__c1 = 0 [L90] ep12 = __VERIFIER_nondet_bool() [L91] ep13 = __VERIFIER_nondet_bool() [L92] ep21 = __VERIFIER_nondet_bool() [L93] ep23 = __VERIFIER_nondet_bool() [L94] ep31 = __VERIFIER_nondet_bool() [L95] ep32 = __VERIFIER_nondet_bool() [L96] id1 = __VERIFIER_nondet_char() [L97] r1 = __VERIFIER_nondet_char() [L98] st1 = __VERIFIER_nondet_char() [L99] nl1 = __VERIFIER_nondet_char() [L100] m1 = __VERIFIER_nondet_char() [L101] max1 = __VERIFIER_nondet_char() [L102] mode1 = __VERIFIER_nondet_bool() [L103] newmax1 = __VERIFIER_nondet_bool() [L104] id2 = __VERIFIER_nondet_char() [L105] r2 = __VERIFIER_nondet_char() [L106] st2 = __VERIFIER_nondet_char() [L107] nl2 = __VERIFIER_nondet_char() [L108] m2 = __VERIFIER_nondet_char() [L109] max2 = __VERIFIER_nondet_char() [L110] mode2 = __VERIFIER_nondet_bool() [L111] newmax2 = __VERIFIER_nondet_bool() [L112] id3 = __VERIFIER_nondet_char() [L113] r3 = __VERIFIER_nondet_char() [L114] st3 = __VERIFIER_nondet_char() [L115] nl3 = __VERIFIER_nondet_char() [L116] m3 = __VERIFIER_nondet_char() [L117] max3 = __VERIFIER_nondet_char() [L118] mode3 = __VERIFIER_nondet_bool() [L119] newmax3 = __VERIFIER_nondet_bool() [L121] _Bool init__r121; [L122] _Bool init__r131; [L123] _Bool init__r211; [L124] _Bool init__r231; [L125] _Bool init__r311; [L126] _Bool init__r321; [L127] _Bool init__r122; [L128] int init__tmp; [L129] _Bool init__r132; [L130] int init__tmp___0; [L131] _Bool init__r212; [L132] int init__tmp___1; [L133] _Bool init__r232; [L134] int init__tmp___2; [L135] _Bool init__r312; [L136] int init__tmp___3; [L137] _Bool init__r322; [L138] int init__tmp___4; [L139] int init__tmp___5; [L140] init__r121 = ep12 [L141] init__r131 = ep13 [L142] init__r211 = ep21 [L143] init__r231 = ep23 [L144] init__r311 = ep31 [L145] init__r321 = ep32 [L146] COND FALSE !(!(init__r121 == 0)) [L3140] COND FALSE !(!(init__r131 == 0)) [L3156] init__tmp = 0 [L150] init__r122 = (_Bool)init__tmp [L151] COND FALSE !(!(init__r131 == 0)) [L3117] COND FALSE !(!(init__r121 == 0)) [L3133] init__tmp___0 = 0 [L155] init__r132 = (_Bool)init__tmp___0 [L156] COND FALSE !(!(init__r211 == 0)) [L3094] COND FALSE !(!(init__r231 == 0)) [L3110] init__tmp___1 = 0 [L160] init__r212 = (_Bool)init__tmp___1 [L161] COND FALSE !(!(init__r231 == 0)) [L3071] COND FALSE !(!(init__r211 == 0)) [L3087] init__tmp___2 = 0 [L165] init__r232 = (_Bool)init__tmp___2 [L166] COND FALSE !(!(init__r311 == 0)) [L3048] COND FALSE !(!(init__r321 == 0)) [L3064] init__tmp___3 = 0 [L170] init__r312 = (_Bool)init__tmp___3 [L171] COND FALSE !(!(init__r321 == 0)) [L3025] COND FALSE !(!(init__r311 == 0)) [L3041] init__tmp___4 = 0 [L175] init__r322 = (_Bool)init__tmp___4 [L176] COND TRUE ((int)id1) != ((int)id2) [L178] COND TRUE ((int)id1) != ((int)id3) [L180] COND TRUE ((int)id2) != ((int)id3) [L182] COND TRUE ((int)id1) >= 0 [L184] COND TRUE ((int)id2) >= 0 [L186] COND TRUE ((int)id3) >= 0 [L188] COND TRUE ((int)r1) == 0 [L190] COND TRUE ((int)r2) == 0 [L192] COND TRUE ((int)r3) == 0 [L194] COND TRUE ((int)max1) == ((int)id1) [L196] COND TRUE ((int)max2) == ((int)id2) [L198] COND TRUE ((int)max3) == ((int)id3) [L200] COND TRUE ((int)st1) == 0 [L202] COND TRUE ((int)st2) == 0 [L204] COND TRUE ((int)st3) == 0 [L206] COND TRUE ((int)nl1) == 0 [L208] COND TRUE ((int)nl2) == 0 [L210] COND TRUE ((int)nl3) == 0 [L212] COND TRUE ((int)mode1) == 0 [L214] COND TRUE ((int)mode2) == 0 [L216] COND TRUE ((int)mode3) == 0 [L218] COND TRUE !(newmax1 == 0) [L220] COND TRUE !(newmax2 == 0) [L222] COND TRUE !(newmax3 == 0) [L224] init__tmp___5 = 1 [L225] __return_1863 = init__tmp___5 [L226] main__i2 = __return_1863 [L227] COND TRUE main__i2 != 0 [L229] p12_old = nomsg [L230] p12_new = nomsg [L231] p13_old = nomsg [L232] p13_new = nomsg [L233] p21_old = nomsg [L234] p21_new = nomsg [L235] p23_old = nomsg [L236] p23_new = nomsg [L237] p31_old = nomsg [L238] p31_new = nomsg [L239] p32_old = nomsg [L240] p32_new = nomsg [L241] main__i2 = 0 [L242] COND TRUE main__i2 < 6 [L245] _Bool node1__newmax; [L246] node1__newmax = 0 [L247] COND FALSE !(!(mode1 == 0)) [L253] COND TRUE ((int)r1) < 2 [L255] COND FALSE !(!(ep12 == 0)) [L268] COND FALSE !(!(ep13 == 0)) [L281] mode1 = 1 [L283] _Bool node2__newmax; [L284] node2__newmax = 0 [L285] COND FALSE !(!(mode2 == 0)) [L291] COND TRUE ((int)r2) < 2 [L293] COND FALSE !(!(ep21 == 0)) [L306] COND FALSE !(!(ep23 == 0)) [L319] mode2 = 1 [L321] _Bool node3__newmax; [L322] node3__newmax = 0 [L323] COND FALSE !(!(mode3 == 0)) [L329] COND TRUE ((int)r3) < 2 [L331] COND FALSE !(!(ep31 == 0)) [L344] COND FALSE !(!(ep32 == 0)) [L357] mode3 = 1 [L358] p12_old = p12_new [L359] p12_new = nomsg [L360] p13_old = p13_new [L361] p13_new = nomsg [L362] p21_old = p21_new [L363] p21_new = nomsg [L364] p23_old = p23_new [L365] p23_new = nomsg [L366] p31_old = p31_new [L367] p31_new = nomsg [L368] p32_old = p32_new [L369] p32_new = nomsg [L371] int check__tmp; [L372] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L374] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L376] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L378] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L380] COND FALSE !(((int)r1) >= 2) [L386] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L388] COND TRUE ((int)r1) < 2 [L390] COND FALSE !(((int)r1) >= 2) [L396] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L398] COND TRUE ((int)r1) < 2 [L400] check__tmp = 1 [L401] __return_2009 = check__tmp [L402] main__c1 = __return_2009 [L404] _Bool __tmp_1; [L405] __tmp_1 = main__c1 [L406] _Bool assert__arg; [L407] assert__arg = __tmp_1 [L408] COND FALSE !(assert__arg == 0) [L414] int main____CPAchecker_TMP_0 = main__i2; [L415] main__i2 = main__i2 + 1 [L416] COND TRUE main__i2 < 6 [L419] _Bool node1__newmax; [L420] node1__newmax = 0 [L421] COND TRUE !(mode1 == 0) [L423] r1 = (char)(((int)r1) + 1) [L424] COND FALSE !(!(ep21 == 0)) [L433] COND FALSE !(!(ep31 == 0)) [L442] newmax1 = node1__newmax [L443] COND FALSE !(((int)r1) == 2) [L449] mode1 = 0 [L451] _Bool node2__newmax; [L452] node2__newmax = 0 [L453] COND TRUE !(mode2 == 0) [L455] r2 = (char)(((int)r2) + 1) [L456] COND FALSE !(!(ep12 == 0)) [L465] COND FALSE !(!(ep32 == 0)) [L474] newmax2 = node2__newmax [L475] COND FALSE !(((int)r2) == 2) [L481] mode2 = 0 [L483] _Bool node3__newmax; [L484] node3__newmax = 0 [L485] COND TRUE !(mode3 == 0) [L487] r3 = (char)(((int)r3) + 1) [L488] COND FALSE !(!(ep13 == 0)) [L497] COND FALSE !(!(ep23 == 0)) [L506] newmax3 = node3__newmax [L507] COND FALSE !(((int)r3) == 2) [L513] mode3 = 0 [L514] p12_old = p12_new [L515] p12_new = nomsg [L516] p13_old = p13_new [L517] p13_new = nomsg [L518] p21_old = p21_new [L519] p21_new = nomsg [L520] p23_old = p23_new [L521] p23_new = nomsg [L522] p31_old = p31_new [L523] p31_new = nomsg [L524] p32_old = p32_new [L525] p32_new = nomsg [L527] int check__tmp; [L528] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L530] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L532] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L534] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L536] COND FALSE !(((int)r1) >= 2) [L542] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L544] COND TRUE ((int)r1) < 2 [L546] COND FALSE !(((int)r1) >= 2) [L552] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L554] COND TRUE ((int)r1) < 2 [L556] check__tmp = 1 [L557] __return_2142 = check__tmp [L558] main__c1 = __return_2142 [L560] _Bool __tmp_2; [L561] __tmp_2 = main__c1 [L562] _Bool assert__arg; [L563] assert__arg = __tmp_2 [L564] COND FALSE !(assert__arg == 0) [L570] int main____CPAchecker_TMP_0 = main__i2; [L571] main__i2 = main__i2 + 1 [L572] COND TRUE main__i2 < 6 [L575] _Bool node1__newmax; [L576] node1__newmax = 0 [L577] COND FALSE !(!(mode1 == 0)) [L583] COND TRUE ((int)r1) < 2 [L585] COND FALSE !(!(ep12 == 0)) [L598] COND FALSE !(!(ep13 == 0)) [L611] mode1 = 1 [L613] _Bool node2__newmax; [L614] node2__newmax = 0 [L615] COND FALSE !(!(mode2 == 0)) [L621] COND TRUE ((int)r2) < 2 [L623] COND FALSE !(!(ep21 == 0)) [L636] COND FALSE !(!(ep23 == 0)) [L649] mode2 = 1 [L651] _Bool node3__newmax; [L652] node3__newmax = 0 [L653] COND FALSE !(!(mode3 == 0)) [L659] COND TRUE ((int)r3) < 2 [L661] COND FALSE !(!(ep31 == 0)) [L674] COND FALSE !(!(ep32 == 0)) [L687] mode3 = 1 [L688] p12_old = p12_new [L689] p12_new = nomsg [L690] p13_old = p13_new [L691] p13_new = nomsg [L692] p21_old = p21_new [L693] p21_new = nomsg [L694] p23_old = p23_new [L695] p23_new = nomsg [L696] p31_old = p31_new [L697] p31_new = nomsg [L698] p32_old = p32_new [L699] p32_new = nomsg [L701] int check__tmp; [L702] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L704] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L706] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L708] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L710] COND FALSE !(((int)r1) >= 2) [L716] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L718] COND TRUE ((int)r1) < 2 [L720] COND FALSE !(((int)r1) >= 2) [L726] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L728] COND TRUE ((int)r1) < 2 [L730] check__tmp = 1 [L731] __return_2281 = check__tmp [L732] main__c1 = __return_2281 [L734] _Bool __tmp_3; [L735] __tmp_3 = main__c1 [L736] _Bool assert__arg; [L737] assert__arg = __tmp_3 [L738] COND FALSE !(assert__arg == 0) [L744] int main____CPAchecker_TMP_0 = main__i2; [L745] main__i2 = main__i2 + 1 [L746] COND TRUE main__i2 < 6 [L749] _Bool node1__newmax; [L750] node1__newmax = 0 [L751] COND TRUE !(mode1 == 0) [L753] r1 = (char)(((int)r1) + 1) [L754] COND FALSE !(!(ep21 == 0)) [L763] COND FALSE !(!(ep31 == 0)) [L772] newmax1 = node1__newmax [L773] COND TRUE ((int)r1) == 2 [L775] COND TRUE ((int)max1) == ((int)id1) [L777] st1 = 1 [L778] mode1 = 0 [L780] _Bool node2__newmax; [L781] node2__newmax = 0 [L782] COND TRUE !(mode2 == 0) [L784] r2 = (char)(((int)r2) + 1) [L785] COND FALSE !(!(ep12 == 0)) [L794] COND FALSE !(!(ep32 == 0)) [L803] newmax2 = node2__newmax [L804] COND TRUE ((int)r2) == 2 [L806] COND TRUE ((int)max2) == ((int)id2) [L808] st2 = 1 [L809] mode2 = 0 [L811] _Bool node3__newmax; [L812] node3__newmax = 0 [L813] COND TRUE !(mode3 == 0) [L815] r3 = (char)(((int)r3) + 1) [L816] COND FALSE !(!(ep13 == 0)) [L825] COND FALSE !(!(ep23 == 0)) [L834] newmax3 = node3__newmax [L835] COND TRUE ((int)r3) == 2 [L837] COND TRUE ((int)max3) == ((int)id3) [L839] st3 = 1 [L840] mode3 = 0 [L841] p12_old = p12_new [L842] p12_new = nomsg [L843] p13_old = p13_new [L844] p13_new = nomsg [L845] p21_old = p21_new [L846] p21_new = nomsg [L847] p23_old = p23_new [L848] p23_new = nomsg [L849] p31_old = p31_new [L850] p31_new = nomsg [L851] p32_old = p32_new [L852] p32_new = nomsg [L854] int check__tmp; [L855] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L861] check__tmp = 0 [L862] __return_3069 = check__tmp [L863] main__c1 = __return_3069 [L865] _Bool __tmp_4; [L866] __tmp_4 = main__c1 [L867] _Bool assert__arg; [L868] assert__arg = __tmp_4 [L869] COND TRUE assert__arg == 0 [L871] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 416 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 54.4s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 41.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11743 SDtfs, 10970 SDslu, 6798 SDs, 0 SdLazy, 12476 SolverSat, 129 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34424occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 20386 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 2085 NumberOfCodeBlocks, 2085 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1920 ConstructedInterpolants, 0 QuantifiedInterpolants, 1088136 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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!