./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/loops-crafted-1/mono-crafted_10.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 8c5f43b3e9ff1d4598a5a525fe9e716f863331c4c517b4b8adb0491943243286 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 15:28:42,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 15:28:42,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 15:28:42,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 15:28:42,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 15:28:42,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 15:28:42,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 15:28:42,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 15:28:42,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 15:28:42,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 15:28:42,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 15:28:42,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 15:28:42,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 15:28:42,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 15:28:42,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 15:28:42,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 15:28:42,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 15:28:42,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 15:28:42,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 15:28:42,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 15:28:42,068 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 15:28:42,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 15:28:42,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 15:28:42,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 15:28:42,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 15:28:42,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 15:28:42,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 15:28:42,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 15:28:42,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 15:28:42,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 15:28:42,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 15:28:42,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 15:28:42,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 15:28:42,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 15:28:42,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 15:28:42,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 15:28:42,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 15:28:42,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 15:28:42,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 15:28:42,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 15:28:42,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 15:28:42,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 15:28:42,084 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 15:28:42,117 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 15:28:42,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 15:28:42,121 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 15:28:42,121 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 15:28:42,122 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 15:28:42,122 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 15:28:42,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 15:28:42,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 15:28:42,123 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 15:28:42,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 15:28:42,124 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 15:28:42,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 15:28:42,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 15:28:42,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 15:28:42,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 15:28:42,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 15:28:42,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 15:28:42,125 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 15:28:42,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 15:28:42,127 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 15:28:42,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 15:28:42,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 15:28:42,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 15:28:42,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 15:28:42,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:28:42,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 15:28:42,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 15:28:42,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 15:28:42,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 15:28:42,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 15:28:42,129 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 15:28:42,129 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 15:28:42,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 15:28:42,130 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c5f43b3e9ff1d4598a5a525fe9e716f863331c4c517b4b8adb0491943243286 [2022-07-22 15:28:42,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 15:28:42,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 15:28:42,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 15:28:42,353 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 15:28:42,354 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 15:28:42,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c [2022-07-22 15:28:42,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6446bc89a/9d5a56d182054c3ba9f2fee5da0ffd24/FLAGd55bce0b2 [2022-07-22 15:28:42,804 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 15:28:42,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c [2022-07-22 15:28:42,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6446bc89a/9d5a56d182054c3ba9f2fee5da0ffd24/FLAGd55bce0b2 [2022-07-22 15:28:42,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6446bc89a/9d5a56d182054c3ba9f2fee5da0ffd24 [2022-07-22 15:28:42,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 15:28:42,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 15:28:42,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 15:28:42,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 15:28:42,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 15:28:42,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:28:42" (1/1) ... [2022-07-22 15:28:42,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a5d724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:28:42, skipping insertion in model container [2022-07-22 15:28:42,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:28:42" (1/1) ... [2022-07-22 15:28:42,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 15:28:42,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 15:28:42,982 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/loops-crafted-1/mono-crafted_10.c[319,332] [2022-07-22 15:28:42,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:28:43,006 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 15:28:43,019 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/loops-crafted-1/mono-crafted_10.c[319,332] [2022-07-22 15:28:43,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:28:43,031 INFO L208 MainTranslator]: Completed translation [2022-07-22 15:28:43,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:28:43 WrapperNode [2022-07-22 15:28:43,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 15:28:43,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 15:28:43,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 15:28:43,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 15:28:43,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:28:43" (1/1) ... [2022-07-22 15:28:43,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:28:43" (1/1) ... [2022-07-22 15:28:43,061 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2022-07-22 15:28:43,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 15:28:43,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 15:28:43,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 15:28:43,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 15:28:43,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:28:43" (1/1) ... [2022-07-22 15:28:43,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:28:43" (1/1) ... [2022-07-22 15:28:43,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:28:43" (1/1) ... [2022-07-22 15:28:43,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:28:43" (1/1) ... [2022-07-22 15:28:43,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:28:43" (1/1) ... [2022-07-22 15:28:43,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:28:43" (1/1) ... [2022-07-22 15:28:43,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:28:43" (1/1) ... [2022-07-22 15:28:43,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 15:28:43,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 15:28:43,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 15:28:43,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 15:28:43,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:28:43" (1/1) ... [2022-07-22 15:28:43,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:28:43,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:28:43,127 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) [2022-07-22 15:28:43,128 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 [2022-07-22 15:28:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 15:28:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 15:28:43,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 15:28:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 15:28:43,201 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 15:28:43,203 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 15:28:43,269 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 15:28:43,274 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 15:28:43,274 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 15:28:43,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:28:43 BoogieIcfgContainer [2022-07-22 15:28:43,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 15:28:43,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 15:28:43,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 15:28:43,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 15:28:43,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 03:28:42" (1/3) ... [2022-07-22 15:28:43,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a515527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:28:43, skipping insertion in model container [2022-07-22 15:28:43,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:28:43" (2/3) ... [2022-07-22 15:28:43,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a515527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:28:43, skipping insertion in model container [2022-07-22 15:28:43,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:28:43" (3/3) ... [2022-07-22 15:28:43,291 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_10.c [2022-07-22 15:28:43,303 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 15:28:43,303 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 15:28:43,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 15:28:43,352 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@1793d39b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6eef63bf [2022-07-22 15:28:43,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 15:28:43,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-07-22 15:28:43,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-22 15:28:43,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:28:43,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-22 15:28:43,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:28:43,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:28:43,365 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2022-07-22 15:28:43,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:28:43,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564693869] [2022-07-22 15:28:43,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:28:43,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:28:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:28:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:28:43,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:28:43,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564693869] [2022-07-22 15:28:43,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564693869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:28:43,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:28:43,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 15:28:43,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972757813] [2022-07-22 15:28:43,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:28:43,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 15:28:43,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:28:43,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 15:28:43,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 15:28:43,483 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-07-22 15:28:43,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:28:43,495 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-07-22 15:28:43,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 15:28:43,497 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-07-22 15:28:43,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:28:43,509 INFO L225 Difference]: With dead ends: 21 [2022-07-22 15:28:43,510 INFO L226 Difference]: Without dead ends: 9 [2022-07-22 15:28:43,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 15:28:43,519 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:28:43,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:28:43,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-22 15:28:43,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-22 15:28:43,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2022-07-22 15:28:43,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-07-22 15:28:43,553 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2022-07-22 15:28:43,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:28:43,553 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-07-22 15:28:43,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-07-22 15:28:43,554 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-07-22 15:28:43,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-22 15:28:43,554 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:28:43,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-22 15:28:43,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 15:28:43,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:28:43,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:28:43,556 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2022-07-22 15:28:43,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:28:43,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479589470] [2022-07-22 15:28:43,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:28:43,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:28:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:28:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:28:43,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:28:43,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479589470] [2022-07-22 15:28:43,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479589470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:28:43,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:28:43,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 15:28:43,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692097166] [2022-07-22 15:28:43,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:28:43,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 15:28:43,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:28:43,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 15:28:43,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 15:28:43,711 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-22 15:28:43,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:28:43,740 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2022-07-22 15:28:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 15:28:43,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-07-22 15:28:43,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:28:43,741 INFO L225 Difference]: With dead ends: 19 [2022-07-22 15:28:43,741 INFO L226 Difference]: Without dead ends: 12 [2022-07-22 15:28:43,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 15:28:43,742 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:28:43,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:28:43,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-22 15:28:43,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2022-07-22 15:28:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-07-22 15:28:43,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-07-22 15:28:43,752 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2022-07-22 15:28:43,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:28:43,752 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-07-22 15:28:43,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-22 15:28:43,753 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-07-22 15:28:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 15:28:43,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:28:43,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:28:43,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 15:28:43,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:28:43,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:28:43,755 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2022-07-22 15:28:43,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:28:43,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589311946] [2022-07-22 15:28:43,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:28:43,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:28:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:28:43,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:28:43,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:28:43,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589311946] [2022-07-22 15:28:43,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589311946] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:28:43,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426687708] [2022-07-22 15:28:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:28:43,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:28:43,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:28:43,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:28:43,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 15:28:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:28:43,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 15:28:43,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:28:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:28:44,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:28:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:28:44,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426687708] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:28:44,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 15:28:44,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 9 [2022-07-22 15:28:44,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632408870] [2022-07-22 15:28:44,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 15:28:44,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 15:28:44,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:28:44,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 15:28:44,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2022-07-22 15:28:44,131 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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) [2022-07-22 15:28:44,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:28:44,196 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2022-07-22 15:28:44,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 15:28:44,196 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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 9 [2022-07-22 15:28:44,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:28:44,197 INFO L225 Difference]: With dead ends: 26 [2022-07-22 15:28:44,197 INFO L226 Difference]: Without dead ends: 19 [2022-07-22 15:28:44,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2022-07-22 15:28:44,199 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 24 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:28:44,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 12 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:28:44,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-22 15:28:44,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-22 15:28:44,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-07-22 15:28:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-22 15:28:44,204 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-22 15:28:44,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:28:44,204 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-22 15:28:44,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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) [2022-07-22 15:28:44,205 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-22 15:28:44,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 15:28:44,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:28:44,212 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-07-22 15:28:44,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 15:28:44,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:28:44,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:28:44,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:28:44,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2022-07-22 15:28:44,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:28:44,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198423418] [2022-07-22 15:28:44,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:28:44,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:28:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:28:44,650 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:28:44,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:28:44,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198423418] [2022-07-22 15:28:44,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198423418] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:28:44,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156335237] [2022-07-22 15:28:44,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 15:28:44,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:28:44,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:28:44,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:28:44,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 15:28:44,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 15:28:44,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 15:28:44,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-22 15:28:44,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:28:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:28:44,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:28:45,079 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:28:45,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156335237] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:28:45,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 15:28:45,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2022-07-22 15:28:45,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418502286] [2022-07-22 15:28:45,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 15:28:45,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 15:28:45,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:28:45,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 15:28:45,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2022-07-22 15:28:45,081 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 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) [2022-07-22 15:28:47,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:28:47,447 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2022-07-22 15:28:47,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 15:28:47,448 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 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 18 [2022-07-22 15:28:47,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:28:47,448 INFO L225 Difference]: With dead ends: 46 [2022-07-22 15:28:47,448 INFO L226 Difference]: Without dead ends: 37 [2022-07-22 15:28:47,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=178, Invalid=284, Unknown=0, NotChecked=0, Total=462 [2022-07-22 15:28:47,450 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 69 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 15:28:47,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 26 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 15:28:47,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-22 15:28:47,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-07-22 15:28:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 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) [2022-07-22 15:28:47,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-07-22 15:28:47,459 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 18 [2022-07-22 15:28:47,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:28:47,459 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-07-22 15:28:47,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 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) [2022-07-22 15:28:47,460 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-07-22 15:28:47,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 15:28:47,461 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:28:47,461 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1] [2022-07-22 15:28:47,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 15:28:47,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-22 15:28:47,668 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:28:47,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:28:47,669 INFO L85 PathProgramCache]: Analyzing trace with hash -51731342, now seen corresponding path program 3 times [2022-07-22 15:28:47,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:28:47,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431180505] [2022-07-22 15:28:47,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:28:47,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:28:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:28:47,990 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:28:47,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:28:47,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431180505] [2022-07-22 15:28:47,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431180505] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:28:47,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518840543] [2022-07-22 15:28:47,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 15:28:47,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:28:47,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:28:47,996 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:28:47,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 15:28:48,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-22 15:28:48,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 15:28:48,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 15:28:48,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:28:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-22 15:28:48,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 15:28:48,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518840543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:28:48,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 15:28:48,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2022-07-22 15:28:48,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625266432] [2022-07-22 15:28:48,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:28:48,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 15:28:48,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:28:48,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 15:28:48,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-07-22 15:28:48,160 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-07-22 15:28:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:28:48,201 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2022-07-22 15:28:48,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 15:28:48,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 36 [2022-07-22 15:28:48,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:28:48,206 INFO L225 Difference]: With dead ends: 63 [2022-07-22 15:28:48,206 INFO L226 Difference]: Without dead ends: 59 [2022-07-22 15:28:48,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-07-22 15:28:48,209 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:28:48,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 10 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:28:48,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-22 15:28:48,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2022-07-22 15:28:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 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) [2022-07-22 15:28:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-07-22 15:28:48,226 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 36 [2022-07-22 15:28:48,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:28:48,226 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-07-22 15:28:48,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-07-22 15:28:48,227 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-07-22 15:28:48,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 15:28:48,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:28:48,228 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:28:48,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 15:28:48,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:28:48,444 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:28:48,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:28:48,444 INFO L85 PathProgramCache]: Analyzing trace with hash -108989644, now seen corresponding path program 1 times [2022-07-22 15:28:48,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:28:48,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349390760] [2022-07-22 15:28:48,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:28:48,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:28:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:28:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:28:48,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:28:48,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349390760] [2022-07-22 15:28:48,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349390760] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:28:48,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668421420] [2022-07-22 15:28:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:28:48,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:28:48,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:28:48,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:28:48,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 15:28:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:28:48,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-22 15:28:48,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:28:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:28:48,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:28:49,127 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:28:49,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668421420] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:28:49,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 15:28:49,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 24 [2022-07-22 15:28:49,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284064527] [2022-07-22 15:28:49,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 15:28:49,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 15:28:49,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:28:49,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 15:28:49,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2022-07-22 15:28:49,130 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 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) [2022-07-22 15:28:53,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:28:53,275 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2022-07-22 15:28:53,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 15:28:53,275 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 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 36 [2022-07-22 15:28:53,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:28:53,276 INFO L225 Difference]: With dead ends: 88 [2022-07-22 15:28:53,276 INFO L226 Difference]: Without dead ends: 70 [2022-07-22 15:28:53,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=393, Invalid=663, Unknown=0, NotChecked=0, Total=1056 [2022-07-22 15:28:53,278 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 61 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 15:28:53,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 43 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 15:28:53,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-22 15:28:53,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-07-22 15:28:53,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 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) [2022-07-22 15:28:53,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2022-07-22 15:28:53,287 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 36 [2022-07-22 15:28:53,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:28:53,288 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2022-07-22 15:28:53,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 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) [2022-07-22 15:28:53,288 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2022-07-22 15:28:53,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 15:28:53,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:28:53,290 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:28:53,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 15:28:53,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:28:53,513 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:28:53,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:28:53,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1647036101, now seen corresponding path program 2 times [2022-07-22 15:28:53,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:28:53,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374347695] [2022-07-22 15:28:53,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:28:53,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:28:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:28:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 41 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:28:53,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:28:53,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374347695] [2022-07-22 15:28:53,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374347695] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:28:53,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894663648] [2022-07-22 15:28:53,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 15:28:53,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:28:53,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:28:53,916 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:28:53,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 15:28:53,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 15:28:53,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 15:28:53,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-22 15:28:53,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:28:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 41 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:28:54,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:28:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:28:55,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894663648] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:28:55,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 15:28:55,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 26] total 49 [2022-07-22 15:28:55,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468828998] [2022-07-22 15:28:55,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 15:28:55,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-22 15:28:55,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:28:55,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-22 15:28:55,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=626, Invalid=1726, Unknown=0, NotChecked=0, Total=2352 [2022-07-22 15:28:55,843 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 49 states, 49 states have (on average 2.795918367346939) internal successors, (137), 49 states have internal predecessors, (137), 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) [2022-07-22 15:29:34,413 WARN L233 SmtUtils]: Spent 32.24s on a formula simplification. DAG size of input: 221 DAG size of output: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 15:30:06,722 WARN L233 SmtUtils]: Spent 21.81s on a formula simplification. DAG size of input: 222 DAG size of output: 15 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 15:30:30,907 WARN L233 SmtUtils]: Spent 15.45s on a formula simplification. DAG size of input: 211 DAG size of output: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 15:31:06,655 WARN L233 SmtUtils]: Spent 23.36s on a formula simplification. DAG size of input: 212 DAG size of output: 15 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 15:31:34,415 WARN L233 SmtUtils]: Spent 13.49s on a formula simplification. DAG size of input: 201 DAG size of output: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 15:31:54,869 WARN L233 SmtUtils]: Spent 10.64s on a formula simplification. DAG size of input: 202 DAG size of output: 15 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 15:32:33,095 WARN L233 SmtUtils]: Spent 23.72s on a formula simplification. DAG size of input: 191 DAG size of output: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 15:32:59,939 WARN L233 SmtUtils]: Spent 13.18s on a formula simplification. DAG size of input: 192 DAG size of output: 15 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)