./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 37e549e4fa4b7b530556a3e37b4e2d4806fbb92dab5da0115a6c327b48fa0370 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 19:17:40,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 19:17:40,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 19:17:40,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 19:17:40,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 19:17:40,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 19:17:40,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 19:17:40,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 19:17:40,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 19:17:41,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 19:17:41,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 19:17:41,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 19:17:41,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 19:17:41,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 19:17:41,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 19:17:41,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 19:17:41,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 19:17:41,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 19:17:41,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 19:17:41,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 19:17:41,027 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 19:17:41,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 19:17:41,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 19:17:41,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 19:17:41,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 19:17:41,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 19:17:41,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 19:17:41,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 19:17:41,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 19:17:41,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 19:17:41,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 19:17:41,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 19:17:41,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 19:17:41,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 19:17:41,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 19:17:41,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 19:17:41,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 19:17:41,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 19:17:41,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 19:17:41,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 19:17:41,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 19:17:41,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 19:17:41,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 19:17:41,077 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 19:17:41,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 19:17:41,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 19:17:41,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 19:17:41,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 19:17:41,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 19:17:41,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 19:17:41,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 19:17:41,080 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 19:17:41,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 19:17:41,081 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 19:17:41,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 19:17:41,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 19:17:41,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 19:17:41,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 19:17:41,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 19:17:41,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 19:17:41,082 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 19:17:41,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 19:17:41,082 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 19:17:41,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 19:17:41,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 19:17:41,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 19:17:41,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 19:17:41,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:17:41,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 19:17:41,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 19:17:41,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 19:17:41,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 19:17:41,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 19:17:41,085 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 19:17:41,085 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 19:17:41,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 19:17:41,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37e549e4fa4b7b530556a3e37b4e2d4806fbb92dab5da0115a6c327b48fa0370 [2022-07-13 19:17:41,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 19:17:41,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 19:17:41,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 19:17:41,358 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 19:17:41,359 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 19:17:41,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-07-13 19:17:41,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/708f79302/3d62e24a330448e582c092ada0213439/FLAG8c4049f37 [2022-07-13 19:17:41,928 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 19:17:41,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-07-13 19:17:41,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/708f79302/3d62e24a330448e582c092ada0213439/FLAG8c4049f37 [2022-07-13 19:17:42,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/708f79302/3d62e24a330448e582c092ada0213439 [2022-07-13 19:17:42,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 19:17:42,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 19:17:42,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 19:17:42,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 19:17:42,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 19:17:42,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:17:42" (1/1) ... [2022-07-13 19:17:42,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@704afa7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:17:42, skipping insertion in model container [2022-07-13 19:17:42,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:17:42" (1/1) ... [2022-07-13 19:17:42,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 19:17:42,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 19:17:42,560 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13490,13503] [2022-07-13 19:17:42,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:17:42,651 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 19:17:42,716 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13490,13503] [2022-07-13 19:17:42,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:17:42,772 INFO L208 MainTranslator]: Completed translation [2022-07-13 19:17:42,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:17:42 WrapperNode [2022-07-13 19:17:42,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 19:17:42,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 19:17:42,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 19:17:42,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 19:17:42,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:17:42" (1/1) ... [2022-07-13 19:17:42,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:17:42" (1/1) ... [2022-07-13 19:17:42,861 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1333 [2022-07-13 19:17:42,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 19:17:42,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 19:17:42,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 19:17:42,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 19:17:42,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:17:42" (1/1) ... [2022-07-13 19:17:42,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:17:42" (1/1) ... [2022-07-13 19:17:42,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:17:42" (1/1) ... [2022-07-13 19:17:42,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:17:42" (1/1) ... [2022-07-13 19:17:42,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:17:42" (1/1) ... [2022-07-13 19:17:42,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:17:42" (1/1) ... [2022-07-13 19:17:42,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:17:42" (1/1) ... [2022-07-13 19:17:42,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 19:17:42,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 19:17:42,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 19:17:42,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 19:17:42,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:17:42" (1/1) ... [2022-07-13 19:17:42,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:17:42,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:17:42,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 19:17:43,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 19:17:43,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 19:17:43,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 19:17:43,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 19:17:43,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 19:17:43,183 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 19:17:43,192 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 19:17:43,997 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 19:17:44,016 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 19:17:44,017 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 19:17:44,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:17:44 BoogieIcfgContainer [2022-07-13 19:17:44,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 19:17:44,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 19:17:44,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 19:17:44,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 19:17:44,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 07:17:42" (1/3) ... [2022-07-13 19:17:44,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55626f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:17:44, skipping insertion in model container [2022-07-13 19:17:44,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:17:42" (2/3) ... [2022-07-13 19:17:44,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55626f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:17:44, skipping insertion in model container [2022-07-13 19:17:44,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:17:44" (3/3) ... [2022-07-13 19:17:44,027 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-07-13 19:17:44,041 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 19:17:44,041 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 19:17:44,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 19:17:44,104 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@14074831, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@28b41247 [2022-07-13 19:17:44,105 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 19:17:44,114 INFO L276 IsEmpty]: Start isEmpty. Operand has 338 states, 336 states have (on average 1.7797619047619047) internal successors, (598), 337 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 19:17:44,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:17:44,143 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:17:44,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:17:44,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:17:44,151 INFO L85 PathProgramCache]: Analyzing trace with hash -139604630, now seen corresponding path program 1 times [2022-07-13 19:17:44,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:17:44,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884815950] [2022-07-13 19:17:44,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:17:44,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:17:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:17:44,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:17:44,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:17:44,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884815950] [2022-07-13 19:17:44,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884815950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:17:44,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:17:44,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:17:44,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534862758] [2022-07-13 19:17:44,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:17:44,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:17:44,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:17:44,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:17:44,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:17:44,687 INFO L87 Difference]: Start difference. First operand has 338 states, 336 states have (on average 1.7797619047619047) internal successors, (598), 337 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:44,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:17:44,857 INFO L93 Difference]: Finished difference Result 640 states and 1100 transitions. [2022-07-13 19:17:44,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:17:44,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-13 19:17:44,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:17:44,885 INFO L225 Difference]: With dead ends: 640 [2022-07-13 19:17:44,885 INFO L226 Difference]: Without dead ends: 477 [2022-07-13 19:17:44,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:17:44,893 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 254 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:17:44,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1122 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 19:17:44,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-07-13 19:17:44,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 474. [2022-07-13 19:17:44,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 1.668076109936575) internal successors, (789), 473 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 789 transitions. [2022-07-13 19:17:44,993 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 789 transitions. Word has length 106 [2022-07-13 19:17:44,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:17:44,994 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 789 transitions. [2022-07-13 19:17:44,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:44,995 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 789 transitions. [2022-07-13 19:17:45,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 19:17:45,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:17:45,005 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:17:45,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 19:17:45,005 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:17:45,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:17:45,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1315500352, now seen corresponding path program 1 times [2022-07-13 19:17:45,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:17:45,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294688303] [2022-07-13 19:17:45,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:17:45,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:17:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:17:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:17:45,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:17:45,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294688303] [2022-07-13 19:17:45,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294688303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:17:45,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:17:45,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:17:45,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526451079] [2022-07-13 19:17:45,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:17:45,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:17:45,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:17:45,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:17:45,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:17:45,221 INFO L87 Difference]: Start difference. First operand 474 states and 789 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:45,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:17:45,286 INFO L93 Difference]: Finished difference Result 1040 states and 1729 transitions. [2022-07-13 19:17:45,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:17:45,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-07-13 19:17:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:17:45,293 INFO L225 Difference]: With dead ends: 1040 [2022-07-13 19:17:45,293 INFO L226 Difference]: Without dead ends: 747 [2022-07-13 19:17:45,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:17:45,303 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 229 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:17:45,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1084 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:17:45,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-07-13 19:17:45,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 743. [2022-07-13 19:17:45,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 742 states have (on average 1.6630727762803235) internal successors, (1234), 742 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:45,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1234 transitions. [2022-07-13 19:17:45,347 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1234 transitions. Word has length 109 [2022-07-13 19:17:45,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:17:45,351 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 1234 transitions. [2022-07-13 19:17:45,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:45,352 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1234 transitions. [2022-07-13 19:17:45,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 19:17:45,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:17:45,360 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:17:45,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 19:17:45,363 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:17:45,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:17:45,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1899343221, now seen corresponding path program 1 times [2022-07-13 19:17:45,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:17:45,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844593599] [2022-07-13 19:17:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:17:45,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:17:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:17:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:17:45,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:17:45,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844593599] [2022-07-13 19:17:45,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844593599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:17:45,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:17:45,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:17:45,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902787072] [2022-07-13 19:17:45,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:17:45,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:17:45,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:17:45,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:17:45,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:17:45,506 INFO L87 Difference]: Start difference. First operand 743 states and 1234 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:45,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:17:45,599 INFO L93 Difference]: Finished difference Result 1827 states and 3028 transitions. [2022-07-13 19:17:45,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:17:45,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-07-13 19:17:45,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:17:45,608 INFO L225 Difference]: With dead ends: 1827 [2022-07-13 19:17:45,608 INFO L226 Difference]: Without dead ends: 1265 [2022-07-13 19:17:45,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:17:45,615 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 222 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:17:45,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1085 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:17:45,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2022-07-13 19:17:45,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1259. [2022-07-13 19:17:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1258 states have (on average 1.6550079491255962) internal successors, (2082), 1258 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:45,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2082 transitions. [2022-07-13 19:17:45,682 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2082 transitions. Word has length 112 [2022-07-13 19:17:45,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:17:45,683 INFO L495 AbstractCegarLoop]: Abstraction has 1259 states and 2082 transitions. [2022-07-13 19:17:45,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:45,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2082 transitions. [2022-07-13 19:17:45,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-13 19:17:45,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:17:45,685 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:17:45,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 19:17:45,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:17:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:17:45,689 INFO L85 PathProgramCache]: Analyzing trace with hash -634176207, now seen corresponding path program 1 times [2022-07-13 19:17:45,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:17:45,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005957509] [2022-07-13 19:17:45,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:17:45,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:17:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:17:45,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:17:45,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:17:45,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005957509] [2022-07-13 19:17:45,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005957509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:17:45,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:17:45,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:17:45,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822292563] [2022-07-13 19:17:45,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:17:45,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:17:45,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:17:45,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:17:45,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:17:45,795 INFO L87 Difference]: Start difference. First operand 1259 states and 2082 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:45,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:17:45,934 INFO L93 Difference]: Finished difference Result 3335 states and 5500 transitions. [2022-07-13 19:17:45,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:17:45,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-07-13 19:17:45,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:17:45,945 INFO L225 Difference]: With dead ends: 3335 [2022-07-13 19:17:45,945 INFO L226 Difference]: Without dead ends: 2257 [2022-07-13 19:17:45,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:17:45,954 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 215 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:17:45,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1086 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:17:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-07-13 19:17:46,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2247. [2022-07-13 19:17:46,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.6447016918967052) internal successors, (3694), 2246 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:46,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3694 transitions. [2022-07-13 19:17:46,119 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3694 transitions. Word has length 115 [2022-07-13 19:17:46,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:17:46,120 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3694 transitions. [2022-07-13 19:17:46,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:46,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3694 transitions. [2022-07-13 19:17:46,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-13 19:17:46,123 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:17:46,123 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:17:46,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 19:17:46,124 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:17:46,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:17:46,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1842996660, now seen corresponding path program 1 times [2022-07-13 19:17:46,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:17:46,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123169809] [2022-07-13 19:17:46,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:17:46,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:17:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:17:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:17:46,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:17:46,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123169809] [2022-07-13 19:17:46,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123169809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:17:46,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:17:46,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 19:17:46,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785333280] [2022-07-13 19:17:46,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:17:46,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 19:17:46,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:17:46,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 19:17:46,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 19:17:46,240 INFO L87 Difference]: Start difference. First operand 2247 states and 3694 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:47,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:17:47,098 INFO L93 Difference]: Finished difference Result 11827 states and 19558 transitions. [2022-07-13 19:17:47,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 19:17:47,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-07-13 19:17:47,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:17:47,149 INFO L225 Difference]: With dead ends: 11827 [2022-07-13 19:17:47,150 INFO L226 Difference]: Without dead ends: 9761 [2022-07-13 19:17:47,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 19:17:47,158 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 2216 mSDsluCounter, 4159 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 4710 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:17:47,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2216 Valid, 4710 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 19:17:47,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2022-07-13 19:17:47,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 4177. [2022-07-13 19:17:47,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4177 states, 4176 states have (on average 1.6429597701149425) internal successors, (6861), 4176 states have internal predecessors, (6861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:47,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4177 states to 4177 states and 6861 transitions. [2022-07-13 19:17:47,560 INFO L78 Accepts]: Start accepts. Automaton has 4177 states and 6861 transitions. Word has length 118 [2022-07-13 19:17:47,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:17:47,561 INFO L495 AbstractCegarLoop]: Abstraction has 4177 states and 6861 transitions. [2022-07-13 19:17:47,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:47,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4177 states and 6861 transitions. [2022-07-13 19:17:47,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-13 19:17:47,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:17:47,565 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:17:47,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 19:17:47,565 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:17:47,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:17:47,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1365383642, now seen corresponding path program 1 times [2022-07-13 19:17:47,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:17:47,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676398092] [2022-07-13 19:17:47,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:17:47,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:17:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:17:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:17:47,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:17:47,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676398092] [2022-07-13 19:17:47,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676398092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:17:47,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:17:47,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 19:17:47,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463167530] [2022-07-13 19:17:47,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:17:47,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 19:17:47,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:17:47,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 19:17:47,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 19:17:47,635 INFO L87 Difference]: Start difference. First operand 4177 states and 6861 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:48,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:17:48,321 INFO L93 Difference]: Finished difference Result 12275 states and 20249 transitions. [2022-07-13 19:17:48,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 19:17:48,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-07-13 19:17:48,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:17:48,358 INFO L225 Difference]: With dead ends: 12275 [2022-07-13 19:17:48,359 INFO L226 Difference]: Without dead ends: 8279 [2022-07-13 19:17:48,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:17:48,368 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 754 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:17:48,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1677 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:17:48,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8279 states. [2022-07-13 19:17:48,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8279 to 6211. [2022-07-13 19:17:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6211 states, 6210 states have (on average 1.644766505636071) internal successors, (10214), 6210 states have internal predecessors, (10214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 10214 transitions. [2022-07-13 19:17:48,885 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 10214 transitions. Word has length 119 [2022-07-13 19:17:48,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:17:48,886 INFO L495 AbstractCegarLoop]: Abstraction has 6211 states and 10214 transitions. [2022-07-13 19:17:48,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 10214 transitions. [2022-07-13 19:17:48,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-13 19:17:48,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:17:48,890 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:17:48,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 19:17:48,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:17:48,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:17:48,892 INFO L85 PathProgramCache]: Analyzing trace with hash 560276051, now seen corresponding path program 1 times [2022-07-13 19:17:48,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:17:48,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342695475] [2022-07-13 19:17:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:17:48,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:17:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:17:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:17:48,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:17:48,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342695475] [2022-07-13 19:17:48,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342695475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:17:48,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:17:48,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 19:17:48,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363268040] [2022-07-13 19:17:48,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:17:48,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 19:17:48,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:17:48,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 19:17:48,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 19:17:48,961 INFO L87 Difference]: Start difference. First operand 6211 states and 10214 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:17:49,943 INFO L93 Difference]: Finished difference Result 18273 states and 30109 transitions. [2022-07-13 19:17:49,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 19:17:49,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-07-13 19:17:49,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:17:49,980 INFO L225 Difference]: With dead ends: 18273 [2022-07-13 19:17:49,981 INFO L226 Difference]: Without dead ends: 12243 [2022-07-13 19:17:49,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:17:49,996 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 752 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:17:49,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 1861 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 19:17:50,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12243 states. [2022-07-13 19:17:50,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12243 to 9203. [2022-07-13 19:17:50,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9203 states, 9202 states have (on average 1.6426863725277114) internal successors, (15116), 9202 states have internal predecessors, (15116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:50,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9203 states to 9203 states and 15116 transitions. [2022-07-13 19:17:50,820 INFO L78 Accepts]: Start accepts. Automaton has 9203 states and 15116 transitions. Word has length 120 [2022-07-13 19:17:50,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:17:50,820 INFO L495 AbstractCegarLoop]: Abstraction has 9203 states and 15116 transitions. [2022-07-13 19:17:50,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:50,821 INFO L276 IsEmpty]: Start isEmpty. Operand 9203 states and 15116 transitions. [2022-07-13 19:17:50,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-13 19:17:50,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:17:50,826 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:17:50,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 19:17:50,826 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:17:50,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:17:50,827 INFO L85 PathProgramCache]: Analyzing trace with hash 130742413, now seen corresponding path program 1 times [2022-07-13 19:17:50,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:17:50,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378928527] [2022-07-13 19:17:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:17:50,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:17:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:17:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:17:50,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:17:50,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378928527] [2022-07-13 19:17:50,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378928527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:17:50,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:17:50,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 19:17:50,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959528040] [2022-07-13 19:17:50,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:17:50,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 19:17:50,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:17:50,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 19:17:50,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 19:17:50,893 INFO L87 Difference]: Start difference. First operand 9203 states and 15116 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:52,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:17:52,055 INFO L93 Difference]: Finished difference Result 27097 states and 44597 transitions. [2022-07-13 19:17:52,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 19:17:52,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-07-13 19:17:52,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:17:52,112 INFO L225 Difference]: With dead ends: 27097 [2022-07-13 19:17:52,113 INFO L226 Difference]: Without dead ends: 18075 [2022-07-13 19:17:52,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:17:52,134 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 750 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:17:52,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1864 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 19:17:52,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18075 states. [2022-07-13 19:17:53,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18075 to 13605. [2022-07-13 19:17:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13605 states, 13604 states have (on average 1.6406939135548368) internal successors, (22320), 13604 states have internal predecessors, (22320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13605 states to 13605 states and 22320 transitions. [2022-07-13 19:17:53,437 INFO L78 Accepts]: Start accepts. Automaton has 13605 states and 22320 transitions. Word has length 121 [2022-07-13 19:17:53,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:17:53,437 INFO L495 AbstractCegarLoop]: Abstraction has 13605 states and 22320 transitions. [2022-07-13 19:17:53,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:53,438 INFO L276 IsEmpty]: Start isEmpty. Operand 13605 states and 22320 transitions. [2022-07-13 19:17:53,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-13 19:17:53,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:17:53,444 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:17:53,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 19:17:53,445 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:17:53,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:17:53,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1601966021, now seen corresponding path program 1 times [2022-07-13 19:17:53,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:17:53,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440918401] [2022-07-13 19:17:53,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:17:53,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:17:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:17:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:17:53,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:17:53,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440918401] [2022-07-13 19:17:53,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440918401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:17:53,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:17:53,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:17:53,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486548201] [2022-07-13 19:17:53,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:17:53,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:17:53,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:17:53,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:17:53,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:17:53,501 INFO L87 Difference]: Start difference. First operand 13605 states and 22320 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:54,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:17:54,894 INFO L93 Difference]: Finished difference Result 30193 states and 49567 transitions. [2022-07-13 19:17:54,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:17:54,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-07-13 19:17:54,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:17:54,956 INFO L225 Difference]: With dead ends: 30193 [2022-07-13 19:17:54,956 INFO L226 Difference]: Without dead ends: 20847 [2022-07-13 19:17:54,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:17:54,982 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 228 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:17:54,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1219 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:17:55,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20847 states. [2022-07-13 19:17:56,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20847 to 20845. [2022-07-13 19:17:56,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20845 states, 20844 states have (on average 1.6359144118211475) internal successors, (34099), 20844 states have internal predecessors, (34099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:56,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20845 states to 20845 states and 34099 transitions. [2022-07-13 19:17:56,468 INFO L78 Accepts]: Start accepts. Automaton has 20845 states and 34099 transitions. Word has length 122 [2022-07-13 19:17:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:17:56,468 INFO L495 AbstractCegarLoop]: Abstraction has 20845 states and 34099 transitions. [2022-07-13 19:17:56,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 20845 states and 34099 transitions. [2022-07-13 19:17:56,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-13 19:17:56,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:17:56,472 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:17:56,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 19:17:56,473 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:17:56,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:17:56,473 INFO L85 PathProgramCache]: Analyzing trace with hash 654906329, now seen corresponding path program 1 times [2022-07-13 19:17:56,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:17:56,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627982780] [2022-07-13 19:17:56,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:17:56,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:17:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:17:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:17:56,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:17:56,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627982780] [2022-07-13 19:17:56,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627982780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:17:56,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:17:56,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:17:56,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668521740] [2022-07-13 19:17:56,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:17:56,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:17:56,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:17:56,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:17:56,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:17:56,546 INFO L87 Difference]: Start difference. First operand 20845 states and 34099 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:17:58,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:17:58,636 INFO L93 Difference]: Finished difference Result 46063 states and 75413 transitions. [2022-07-13 19:17:58,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:17:58,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-07-13 19:17:58,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:17:58,705 INFO L225 Difference]: With dead ends: 46063 [2022-07-13 19:17:58,705 INFO L226 Difference]: Without dead ends: 31699 [2022-07-13 19:17:58,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:17:58,742 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 221 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:17:58,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1186 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:17:58,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31699 states. [2022-07-13 19:18:00,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31699 to 31697. [2022-07-13 19:18:00,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31697 states, 31696 states have (on average 1.6305212014134276) internal successors, (51681), 31696 states have internal predecessors, (51681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31697 states to 31697 states and 51681 transitions. [2022-07-13 19:18:00,700 INFO L78 Accepts]: Start accepts. Automaton has 31697 states and 51681 transitions. Word has length 122 [2022-07-13 19:18:00,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:18:00,701 INFO L495 AbstractCegarLoop]: Abstraction has 31697 states and 51681 transitions. [2022-07-13 19:18:00,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:00,701 INFO L276 IsEmpty]: Start isEmpty. Operand 31697 states and 51681 transitions. [2022-07-13 19:18:00,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-13 19:18:00,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:18:00,703 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:18:00,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 19:18:00,704 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:18:00,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:18:00,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1423805753, now seen corresponding path program 1 times [2022-07-13 19:18:00,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:18:00,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327391877] [2022-07-13 19:18:00,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:18:00,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:18:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:18:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:18:00,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:18:00,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327391877] [2022-07-13 19:18:00,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327391877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:18:00,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:18:00,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:18:00,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284772068] [2022-07-13 19:18:00,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:18:00,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:18:00,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:18:00,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:18:00,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:00,770 INFO L87 Difference]: Start difference. First operand 31697 states and 51681 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:03,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:18:03,410 INFO L93 Difference]: Finished difference Result 61873 states and 101007 transitions. [2022-07-13 19:18:03,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:18:03,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-07-13 19:18:03,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:18:03,495 INFO L225 Difference]: With dead ends: 61873 [2022-07-13 19:18:03,496 INFO L226 Difference]: Without dead ends: 44427 [2022-07-13 19:18:03,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:03,530 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 214 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:18:03,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1154 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:18:03,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44427 states. [2022-07-13 19:18:06,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44427 to 44425. [2022-07-13 19:18:06,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44425 states, 44424 states have (on average 1.6254051863857375) internal successors, (72207), 44424 states have internal predecessors, (72207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44425 states to 44425 states and 72207 transitions. [2022-07-13 19:18:06,858 INFO L78 Accepts]: Start accepts. Automaton has 44425 states and 72207 transitions. Word has length 122 [2022-07-13 19:18:06,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:18:06,858 INFO L495 AbstractCegarLoop]: Abstraction has 44425 states and 72207 transitions. [2022-07-13 19:18:06,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:06,859 INFO L276 IsEmpty]: Start isEmpty. Operand 44425 states and 72207 transitions. [2022-07-13 19:18:06,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-13 19:18:06,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:18:06,861 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:18:06,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 19:18:06,861 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:18:06,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:18:06,862 INFO L85 PathProgramCache]: Analyzing trace with hash -295340454, now seen corresponding path program 1 times [2022-07-13 19:18:06,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:18:06,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638020663] [2022-07-13 19:18:06,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:18:06,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:18:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:18:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:18:06,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:18:06,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638020663] [2022-07-13 19:18:06,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638020663] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:18:06,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:18:06,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 19:18:06,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436935183] [2022-07-13 19:18:06,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:18:06,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 19:18:06,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:18:06,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 19:18:06,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 19:18:06,932 INFO L87 Difference]: Start difference. First operand 44425 states and 72207 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:13,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:18:13,155 INFO L93 Difference]: Finished difference Result 141581 states and 230498 transitions. [2022-07-13 19:18:13,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 19:18:13,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-07-13 19:18:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:18:13,365 INFO L225 Difference]: With dead ends: 141581 [2022-07-13 19:18:13,365 INFO L226 Difference]: Without dead ends: 97557 [2022-07-13 19:18:13,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:18:13,424 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 748 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:18:13,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1862 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 19:18:13,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97557 states.