./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-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 62ddbd8e479b9a9ff0259307914371bc7c12caf38dd9ff6b9d8872f71f8db1de --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:43:15,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:43:15,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:43:16,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:43:16,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:43:16,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:43:16,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:43:16,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:43:16,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:43:16,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:43:16,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:43:16,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:43:16,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:43:16,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:43:16,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:43:16,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:43:16,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:43:16,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:43:16,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:43:16,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:43:16,041 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:43:16,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:43:16,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:43:16,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:43:16,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:43:16,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:43:16,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:43:16,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:43:16,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:43:16,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:43:16,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:43:16,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:43:16,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:43:16,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:43:16,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:43:16,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:43:16,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:43:16,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:43:16,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:43:16,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:43:16,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:43:16,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:43:16,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:43:16,091 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:43:16,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:43:16,092 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:43:16,092 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:43:16,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:43:16,093 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:43:16,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:43:16,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:43:16,094 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:43:16,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:43:16,095 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:43:16,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:43:16,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:43:16,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:43:16,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:43:16,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:43:16,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:43:16,096 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:43:16,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:43:16,096 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:43:16,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:43:16,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:43:16,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:43:16,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:43:16,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:43:16,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:43:16,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:43:16,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:43:16,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:43:16,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:43:16,099 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:43:16,099 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:43:16,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:43:16,099 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62ddbd8e479b9a9ff0259307914371bc7c12caf38dd9ff6b9d8872f71f8db1de [2022-07-13 18:43:16,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:43:16,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:43:16,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:43:16,347 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:43:16,351 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:43:16,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-13 18:43:16,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea8f0810/50357ea9816941e485016fc2d95c483d/FLAG89f78e1ad [2022-07-13 18:43:16,871 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:43:16,872 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-13 18:43:16,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea8f0810/50357ea9816941e485016fc2d95c483d/FLAG89f78e1ad [2022-07-13 18:43:17,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea8f0810/50357ea9816941e485016fc2d95c483d [2022-07-13 18:43:17,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:43:17,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:43:17,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:43:17,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:43:17,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:43:17,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:43:17" (1/1) ... [2022-07-13 18:43:17,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50867ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:43:17, skipping insertion in model container [2022-07-13 18:43:17,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:43:17" (1/1) ... [2022-07-13 18:43:17,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:43:17,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:43:17,503 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8125,8138] [2022-07-13 18:43:17,533 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14955,14968] [2022-07-13 18:43:17,542 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17042,17055] [2022-07-13 18:43:17,548 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18066,18079] [2022-07-13 18:43:17,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:43:17,692 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:43:17,733 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8125,8138] [2022-07-13 18:43:17,769 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14955,14968] [2022-07-13 18:43:17,775 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17042,17055] [2022-07-13 18:43:17,786 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18066,18079] [2022-07-13 18:43:17,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:43:17,891 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:43:17,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:43:17 WrapperNode [2022-07-13 18:43:17,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:43:17,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:43:17,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:43:17,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:43:17,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:43:17" (1/1) ... [2022-07-13 18:43:17,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:43:17" (1/1) ... [2022-07-13 18:43:18,014 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2415 [2022-07-13 18:43:18,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:43:18,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:43:18,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:43:18,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:43:18,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:43:17" (1/1) ... [2022-07-13 18:43:18,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:43:17" (1/1) ... [2022-07-13 18:43:18,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:43:17" (1/1) ... [2022-07-13 18:43:18,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:43:17" (1/1) ... [2022-07-13 18:43:18,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:43:17" (1/1) ... [2022-07-13 18:43:18,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:43:17" (1/1) ... [2022-07-13 18:43:18,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:43:17" (1/1) ... [2022-07-13 18:43:18,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:43:18,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:43:18,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:43:18,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:43:18,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:43:17" (1/1) ... [2022-07-13 18:43:18,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:43:18,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:43:18,152 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 18:43:18,177 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 18:43:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:43:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:43:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:43:18,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:43:18,331 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:43:18,333 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:43:19,420 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:43:19,436 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:43:19,437 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 18:43:19,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:43:19 BoogieIcfgContainer [2022-07-13 18:43:19,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:43:19,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:43:19,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:43:19,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:43:19,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:43:17" (1/3) ... [2022-07-13 18:43:19,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ac5c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:43:19, skipping insertion in model container [2022-07-13 18:43:19,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:43:17" (2/3) ... [2022-07-13 18:43:19,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ac5c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:43:19, skipping insertion in model container [2022-07-13 18:43:19,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:43:19" (3/3) ... [2022-07-13 18:43:19,448 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-13 18:43:19,460 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:43:19,460 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-13 18:43:19,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:43:19,541 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@4f6526b4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@435a9d9 [2022-07-13 18:43:19,541 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 18:43:19,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 456 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 455 states have internal predecessors, (834), 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 18:43:19,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-13 18:43:19,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:19,560 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] [2022-07-13 18:43:19,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:19,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:19,565 INFO L85 PathProgramCache]: Analyzing trace with hash 26036561, now seen corresponding path program 1 times [2022-07-13 18:43:19,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:19,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817749157] [2022-07-13 18:43:19,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:19,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:19,864 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 18:43:19,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:19,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817749157] [2022-07-13 18:43:19,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817749157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:19,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:19,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:43:19,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057810632] [2022-07-13 18:43:19,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:19,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:43:19,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:19,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:43:19,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:43:19,896 INFO L87 Difference]: Start difference. First operand has 456 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 455 states have internal predecessors, (834), 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 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 18:43:20,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:20,341 INFO L93 Difference]: Finished difference Result 833 states and 1472 transitions. [2022-07-13 18:43:20,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:43:20,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2022-07-13 18:43:20,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:20,355 INFO L225 Difference]: With dead ends: 833 [2022-07-13 18:43:20,355 INFO L226 Difference]: Without dead ends: 484 [2022-07-13 18:43:20,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:43:20,362 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 2293 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:20,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2293 Valid, 576 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:43:20,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-07-13 18:43:20,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 478. [2022-07-13 18:43:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 474 states have (on average 1.3755274261603376) internal successors, (652), 477 states have internal predecessors, (652), 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 18:43:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 652 transitions. [2022-07-13 18:43:20,433 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 652 transitions. Word has length 50 [2022-07-13 18:43:20,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:20,433 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 652 transitions. [2022-07-13 18:43:20,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 18:43:20,434 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 652 transitions. [2022-07-13 18:43:20,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-13 18:43:20,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:20,441 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] [2022-07-13 18:43:20,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:43:20,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:20,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:20,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1543870192, now seen corresponding path program 1 times [2022-07-13 18:43:20,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:20,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384759189] [2022-07-13 18:43:20,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:20,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:20,523 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 18:43:20,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:20,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384759189] [2022-07-13 18:43:20,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384759189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:20,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:20,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:43:20,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372384465] [2022-07-13 18:43:20,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:20,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:43:20,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:20,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:43:20,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:43:20,527 INFO L87 Difference]: Start difference. First operand 478 states and 652 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 18:43:20,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:20,583 INFO L93 Difference]: Finished difference Result 938 states and 1336 transitions. [2022-07-13 18:43:20,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:43:20,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-07-13 18:43:20,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:20,586 INFO L225 Difference]: With dead ends: 938 [2022-07-13 18:43:20,587 INFO L226 Difference]: Without dead ends: 684 [2022-07-13 18:43:20,588 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 18:43:20,589 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 272 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:20,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 860 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:43:20,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-07-13 18:43:20,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 678. [2022-07-13 18:43:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 674 states have (on average 1.4080118694362018) internal successors, (949), 677 states have internal predecessors, (949), 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 18:43:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 949 transitions. [2022-07-13 18:43:20,623 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 949 transitions. Word has length 51 [2022-07-13 18:43:20,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:20,624 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 949 transitions. [2022-07-13 18:43:20,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 18:43:20,624 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 949 transitions. [2022-07-13 18:43:20,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-13 18:43:20,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:20,626 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] [2022-07-13 18:43:20,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:43:20,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:20,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:20,627 INFO L85 PathProgramCache]: Analyzing trace with hash -359372662, now seen corresponding path program 1 times [2022-07-13 18:43:20,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:20,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006353177] [2022-07-13 18:43:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:20,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:20,768 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 18:43:20,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:20,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006353177] [2022-07-13 18:43:20,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006353177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:20,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:20,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:43:20,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066454403] [2022-07-13 18:43:20,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:20,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:43:20,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:20,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:43:20,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:43:20,772 INFO L87 Difference]: Start difference. First operand 678 states and 949 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 18:43:20,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:20,839 INFO L93 Difference]: Finished difference Result 1307 states and 1856 transitions. [2022-07-13 18:43:20,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:43:20,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-07-13 18:43:20,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:20,844 INFO L225 Difference]: With dead ends: 1307 [2022-07-13 18:43:20,844 INFO L226 Difference]: Without dead ends: 917 [2022-07-13 18:43:20,845 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 18:43:20,846 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 366 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:20,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 932 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:43:20,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2022-07-13 18:43:20,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 907. [2022-07-13 18:43:20,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 903 states have (on average 1.3820598006644518) internal successors, (1248), 906 states have internal predecessors, (1248), 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 18:43:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1248 transitions. [2022-07-13 18:43:20,892 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1248 transitions. Word has length 51 [2022-07-13 18:43:20,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:20,892 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 1248 transitions. [2022-07-13 18:43:20,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 18:43:20,893 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1248 transitions. [2022-07-13 18:43:20,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-13 18:43:20,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:20,894 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] [2022-07-13 18:43:20,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:43:20,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:20,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:20,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1979749037, now seen corresponding path program 1 times [2022-07-13 18:43:20,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:20,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863005630] [2022-07-13 18:43:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:20,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:20,965 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 18:43:20,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:20,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863005630] [2022-07-13 18:43:20,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863005630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:20,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:20,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:43:20,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145168332] [2022-07-13 18:43:20,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:20,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:43:20,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:20,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:43:20,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:43:20,968 INFO L87 Difference]: Start difference. First operand 907 states and 1248 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 18:43:21,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:21,079 INFO L93 Difference]: Finished difference Result 1892 states and 2673 transitions. [2022-07-13 18:43:21,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:43:21,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-07-13 18:43:21,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:21,086 INFO L225 Difference]: With dead ends: 1892 [2022-07-13 18:43:21,086 INFO L226 Difference]: Without dead ends: 1391 [2022-07-13 18:43:21,087 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 18:43:21,088 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 263 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:21,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 924 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:43:21,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-07-13 18:43:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1384. [2022-07-13 18:43:21,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1380 states have (on average 1.3898550724637682) internal successors, (1918), 1383 states have internal predecessors, (1918), 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 18:43:21,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1918 transitions. [2022-07-13 18:43:21,158 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1918 transitions. Word has length 51 [2022-07-13 18:43:21,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:21,159 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 1918 transitions. [2022-07-13 18:43:21,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 18:43:21,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1918 transitions. [2022-07-13 18:43:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-13 18:43:21,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:21,161 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] [2022-07-13 18:43:21,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:43:21,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:21,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:21,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2124032919, now seen corresponding path program 1 times [2022-07-13 18:43:21,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:21,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139847899] [2022-07-13 18:43:21,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:21,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:21,217 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 18:43:21,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:21,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139847899] [2022-07-13 18:43:21,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139847899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:21,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:21,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:43:21,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263750992] [2022-07-13 18:43:21,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:21,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:43:21,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:21,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:43:21,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:43:21,220 INFO L87 Difference]: Start difference. First operand 1384 states and 1918 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 18:43:21,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:21,563 INFO L93 Difference]: Finished difference Result 2979 states and 4184 transitions. [2022-07-13 18:43:21,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:43:21,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2022-07-13 18:43:21,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:21,570 INFO L225 Difference]: With dead ends: 2979 [2022-07-13 18:43:21,571 INFO L226 Difference]: Without dead ends: 1766 [2022-07-13 18:43:21,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:43:21,576 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 1529 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:21,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 371 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:43:21,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2022-07-13 18:43:21,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1754. [2022-07-13 18:43:21,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1750 states have (on average 1.3982857142857144) internal successors, (2447), 1753 states have internal predecessors, (2447), 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 18:43:21,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2447 transitions. [2022-07-13 18:43:21,711 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2447 transitions. Word has length 51 [2022-07-13 18:43:21,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:21,713 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 2447 transitions. [2022-07-13 18:43:21,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 18:43:21,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2447 transitions. [2022-07-13 18:43:21,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-13 18:43:21,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:21,720 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] [2022-07-13 18:43:21,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:43:21,720 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:21,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:21,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1035105163, now seen corresponding path program 1 times [2022-07-13 18:43:21,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:21,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739191161] [2022-07-13 18:43:21,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:21,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:21,809 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 18:43:21,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:21,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739191161] [2022-07-13 18:43:21,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739191161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:21,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:21,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:43:21,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617802579] [2022-07-13 18:43:21,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:21,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:43:21,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:21,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:43:21,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:43:21,814 INFO L87 Difference]: Start difference. First operand 1754 states and 2447 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 18:43:22,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:22,195 INFO L93 Difference]: Finished difference Result 3899 states and 5482 transitions. [2022-07-13 18:43:22,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:43:22,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2022-07-13 18:43:22,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:22,205 INFO L225 Difference]: With dead ends: 3899 [2022-07-13 18:43:22,205 INFO L226 Difference]: Without dead ends: 2316 [2022-07-13 18:43:22,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:43:22,211 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 1372 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:22,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 340 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:43:22,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2022-07-13 18:43:22,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2300. [2022-07-13 18:43:22,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2296 states have (on average 1.3937282229965158) internal successors, (3200), 2299 states have internal predecessors, (3200), 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 18:43:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 3200 transitions. [2022-07-13 18:43:22,376 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 3200 transitions. Word has length 52 [2022-07-13 18:43:22,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:22,377 INFO L495 AbstractCegarLoop]: Abstraction has 2300 states and 3200 transitions. [2022-07-13 18:43:22,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 18:43:22,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 3200 transitions. [2022-07-13 18:43:22,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 18:43:22,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:22,379 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] [2022-07-13 18:43:22,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:43:22,380 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:22,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:22,380 INFO L85 PathProgramCache]: Analyzing trace with hash 825819079, now seen corresponding path program 1 times [2022-07-13 18:43:22,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:22,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478565808] [2022-07-13 18:43:22,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:22,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:22,457 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 18:43:22,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:22,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478565808] [2022-07-13 18:43:22,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478565808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:22,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:22,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:43:22,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085113198] [2022-07-13 18:43:22,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:22,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:43:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:22,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:43:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:43:22,461 INFO L87 Difference]: Start difference. First operand 2300 states and 3200 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 18:43:23,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:23,351 INFO L93 Difference]: Finished difference Result 7352 states and 10455 transitions. [2022-07-13 18:43:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 18:43:23,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2022-07-13 18:43:23,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:23,373 INFO L225 Difference]: With dead ends: 7352 [2022-07-13 18:43:23,373 INFO L226 Difference]: Without dead ends: 6322 [2022-07-13 18:43:23,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-13 18:43:23,376 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 2722 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:23,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2722 Valid, 604 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:43:23,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6322 states. [2022-07-13 18:43:23,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6322 to 2314. [2022-07-13 18:43:23,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2310 states have (on average 1.3930735930735931) internal successors, (3218), 2313 states have internal predecessors, (3218), 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 18:43:23,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 3218 transitions. [2022-07-13 18:43:23,631 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 3218 transitions. Word has length 53 [2022-07-13 18:43:23,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:23,631 INFO L495 AbstractCegarLoop]: Abstraction has 2314 states and 3218 transitions. [2022-07-13 18:43:23,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 18:43:23,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 3218 transitions. [2022-07-13 18:43:23,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 18:43:23,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:23,634 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] [2022-07-13 18:43:23,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:43:23,634 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:23,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:23,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1519774840, now seen corresponding path program 1 times [2022-07-13 18:43:23,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:23,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075867240] [2022-07-13 18:43:23,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:23,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:23,703 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 18:43:23,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:23,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075867240] [2022-07-13 18:43:23,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075867240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:23,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:23,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:43:23,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678481466] [2022-07-13 18:43:23,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:23,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:43:23,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:23,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:43:23,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:43:23,705 INFO L87 Difference]: Start difference. First operand 2314 states and 3218 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 18:43:24,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:24,939 INFO L93 Difference]: Finished difference Result 8112 states and 11565 transitions. [2022-07-13 18:43:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 18:43:24,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2022-07-13 18:43:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:24,965 INFO L225 Difference]: With dead ends: 8112 [2022-07-13 18:43:24,966 INFO L226 Difference]: Without dead ends: 7269 [2022-07-13 18:43:24,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-13 18:43:24,969 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 2035 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:24,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 765 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:43:24,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7269 states. [2022-07-13 18:43:25,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7269 to 2336. [2022-07-13 18:43:25,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 2332 states have (on average 1.3932246998284734) internal successors, (3249), 2335 states have internal predecessors, (3249), 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 18:43:25,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3249 transitions. [2022-07-13 18:43:25,279 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3249 transitions. Word has length 53 [2022-07-13 18:43:25,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:25,280 INFO L495 AbstractCegarLoop]: Abstraction has 2336 states and 3249 transitions. [2022-07-13 18:43:25,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 18:43:25,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3249 transitions. [2022-07-13 18:43:25,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 18:43:25,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:25,283 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] [2022-07-13 18:43:25,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:43:25,283 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:25,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:25,284 INFO L85 PathProgramCache]: Analyzing trace with hash -461927258, now seen corresponding path program 1 times [2022-07-13 18:43:25,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:25,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674393823] [2022-07-13 18:43:25,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:25,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:25,344 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 18:43:25,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:25,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674393823] [2022-07-13 18:43:25,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674393823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:25,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:25,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:43:25,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912487705] [2022-07-13 18:43:25,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:25,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:43:25,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:25,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:43:25,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:43:25,347 INFO L87 Difference]: Start difference. First operand 2336 states and 3249 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 18:43:26,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:26,719 INFO L93 Difference]: Finished difference Result 9735 states and 13865 transitions. [2022-07-13 18:43:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 18:43:26,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2022-07-13 18:43:26,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:26,752 INFO L225 Difference]: With dead ends: 9735 [2022-07-13 18:43:26,753 INFO L226 Difference]: Without dead ends: 8767 [2022-07-13 18:43:26,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-13 18:43:26,756 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 3180 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3180 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:26,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3180 Valid, 658 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:43:26,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8767 states. [2022-07-13 18:43:27,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8767 to 2370. [2022-07-13 18:43:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 2366 states have (on average 1.3918005071851225) internal successors, (3293), 2369 states have internal predecessors, (3293), 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 18:43:27,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 3293 transitions. [2022-07-13 18:43:27,084 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 3293 transitions. Word has length 53 [2022-07-13 18:43:27,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:27,084 INFO L495 AbstractCegarLoop]: Abstraction has 2370 states and 3293 transitions. [2022-07-13 18:43:27,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 18:43:27,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 3293 transitions. [2022-07-13 18:43:27,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-13 18:43:27,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:27,087 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] [2022-07-13 18:43:27,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:43:27,087 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:27,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:27,088 INFO L85 PathProgramCache]: Analyzing trace with hash -719043471, now seen corresponding path program 1 times [2022-07-13 18:43:27,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:27,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008597545] [2022-07-13 18:43:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:27,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:27,225 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 18:43:27,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:27,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008597545] [2022-07-13 18:43:27,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008597545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:27,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:27,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:43:27,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810133579] [2022-07-13 18:43:27,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:27,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:43:27,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:27,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:43:27,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:43:27,227 INFO L87 Difference]: Start difference. First operand 2370 states and 3293 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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 18:43:28,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:28,262 INFO L93 Difference]: Finished difference Result 5779 states and 8214 transitions. [2022-07-13 18:43:28,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:43:28,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2022-07-13 18:43:28,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:28,270 INFO L225 Difference]: With dead ends: 5779 [2022-07-13 18:43:28,270 INFO L226 Difference]: Without dead ends: 4241 [2022-07-13 18:43:28,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-07-13 18:43:28,273 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 2449 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:28,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2449 Valid, 946 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:43:28,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2022-07-13 18:43:28,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 2280. [2022-07-13 18:43:28,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 2276 states have (on average 1.390597539543058) internal successors, (3165), 2279 states have internal predecessors, (3165), 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 18:43:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3165 transitions. [2022-07-13 18:43:28,534 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3165 transitions. Word has length 54 [2022-07-13 18:43:28,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:28,535 INFO L495 AbstractCegarLoop]: Abstraction has 2280 states and 3165 transitions. [2022-07-13 18:43:28,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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 18:43:28,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3165 transitions. [2022-07-13 18:43:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-13 18:43:28,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:28,537 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] [2022-07-13 18:43:28,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:43:28,537 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:28,538 INFO L85 PathProgramCache]: Analyzing trace with hash 465454059, now seen corresponding path program 1 times [2022-07-13 18:43:28,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:28,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959833842] [2022-07-13 18:43:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:28,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:28,658 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 18:43:28,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:28,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959833842] [2022-07-13 18:43:28,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959833842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:28,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:28,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:43:28,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311066653] [2022-07-13 18:43:28,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:28,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:43:28,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:28,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:43:28,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:43:28,661 INFO L87 Difference]: Start difference. First operand 2280 states and 3165 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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 18:43:30,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:30,036 INFO L93 Difference]: Finished difference Result 7077 states and 10098 transitions. [2022-07-13 18:43:30,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:43:30,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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 54 [2022-07-13 18:43:30,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:30,046 INFO L225 Difference]: With dead ends: 7077 [2022-07-13 18:43:30,046 INFO L226 Difference]: Without dead ends: 5699 [2022-07-13 18:43:30,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-07-13 18:43:30,050 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 2142 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2142 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:30,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2142 Valid, 1563 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 18:43:30,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2022-07-13 18:43:30,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 2251. [2022-07-13 18:43:30,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2247 states have (on average 1.3902981753449044) internal successors, (3124), 2250 states have internal predecessors, (3124), 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 18:43:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3124 transitions. [2022-07-13 18:43:30,363 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3124 transitions. Word has length 54 [2022-07-13 18:43:30,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:30,363 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3124 transitions. [2022-07-13 18:43:30,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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 18:43:30,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3124 transitions. [2022-07-13 18:43:30,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-13 18:43:30,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:30,366 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] [2022-07-13 18:43:30,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:43:30,366 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:30,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:30,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1085167472, now seen corresponding path program 1 times [2022-07-13 18:43:30,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:30,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732266840] [2022-07-13 18:43:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:30,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:30,452 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 18:43:30,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:30,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732266840] [2022-07-13 18:43:30,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732266840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:30,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:30,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:43:30,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697286761] [2022-07-13 18:43:30,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:30,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:43:30,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:30,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:43:30,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:43:30,455 INFO L87 Difference]: Start difference. First operand 2251 states and 3124 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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 18:43:31,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:31,732 INFO L93 Difference]: Finished difference Result 5391 states and 7658 transitions. [2022-07-13 18:43:31,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:43:31,732 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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 54 [2022-07-13 18:43:31,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:31,741 INFO L225 Difference]: With dead ends: 5391 [2022-07-13 18:43:31,741 INFO L226 Difference]: Without dead ends: 5386 [2022-07-13 18:43:31,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-07-13 18:43:31,743 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 1237 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:31,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 1233 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 18:43:31,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5386 states. [2022-07-13 18:43:32,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5386 to 2251. [2022-07-13 18:43:32,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2247 states have (on average 1.3894080996884735) internal successors, (3122), 2250 states have internal predecessors, (3122), 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 18:43:32,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3122 transitions. [2022-07-13 18:43:32,092 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3122 transitions. Word has length 54 [2022-07-13 18:43:32,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:32,093 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3122 transitions. [2022-07-13 18:43:32,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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 18:43:32,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3122 transitions. [2022-07-13 18:43:32,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 18:43:32,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:32,095 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] [2022-07-13 18:43:32,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:43:32,096 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:32,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:32,096 INFO L85 PathProgramCache]: Analyzing trace with hash -344500623, now seen corresponding path program 1 times [2022-07-13 18:43:32,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:32,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247419453] [2022-07-13 18:43:32,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:32,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:32,132 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 18:43:32,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:32,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247419453] [2022-07-13 18:43:32,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247419453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:32,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:32,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:43:32,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548866646] [2022-07-13 18:43:32,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:32,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:43:32,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:32,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:43:32,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:43:32,134 INFO L87 Difference]: Start difference. First operand 2251 states and 3122 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 18:43:32,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:32,456 INFO L93 Difference]: Finished difference Result 3193 states and 4471 transitions. [2022-07-13 18:43:32,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:43:32,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2022-07-13 18:43:32,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:32,460 INFO L225 Difference]: With dead ends: 3193 [2022-07-13 18:43:32,460 INFO L226 Difference]: Without dead ends: 2258 [2022-07-13 18:43:32,461 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 18:43:32,462 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 224 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:32,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 798 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:43:32,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2022-07-13 18:43:32,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2251. [2022-07-13 18:43:32,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2247 states have (on average 1.3760569648420116) internal successors, (3092), 2250 states have internal predecessors, (3092), 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 18:43:32,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3092 transitions. [2022-07-13 18:43:32,840 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3092 transitions. Word has length 55 [2022-07-13 18:43:32,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:32,841 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3092 transitions. [2022-07-13 18:43:32,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 18:43:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3092 transitions. [2022-07-13 18:43:32,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 18:43:32,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:32,843 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] [2022-07-13 18:43:32,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 18:43:32,844 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:32,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:32,844 INFO L85 PathProgramCache]: Analyzing trace with hash 29096373, now seen corresponding path program 1 times [2022-07-13 18:43:32,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:32,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254898454] [2022-07-13 18:43:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:32,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:32,876 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 18:43:32,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:32,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254898454] [2022-07-13 18:43:32,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254898454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:32,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:32,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:43:32,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376014761] [2022-07-13 18:43:32,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:32,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:43:32,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:32,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:43:32,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:43:32,878 INFO L87 Difference]: Start difference. First operand 2251 states and 3092 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 18:43:33,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:33,180 INFO L93 Difference]: Finished difference Result 3252 states and 4507 transitions. [2022-07-13 18:43:33,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:43:33,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2022-07-13 18:43:33,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:33,184 INFO L225 Difference]: With dead ends: 3252 [2022-07-13 18:43:33,184 INFO L226 Difference]: Without dead ends: 2257 [2022-07-13 18:43:33,185 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 18:43:33,186 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 240 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:33,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 799 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:43:33,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-07-13 18:43:33,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2251. [2022-07-13 18:43:33,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2247 states have (on average 1.3635959056519804) internal successors, (3064), 2250 states have internal predecessors, (3064), 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 18:43:33,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3064 transitions. [2022-07-13 18:43:33,469 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3064 transitions. Word has length 55 [2022-07-13 18:43:33,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:33,469 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3064 transitions. [2022-07-13 18:43:33,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 18:43:33,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3064 transitions. [2022-07-13 18:43:33,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 18:43:33,471 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:33,471 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] [2022-07-13 18:43:33,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 18:43:33,472 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:33,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:33,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1813019801, now seen corresponding path program 1 times [2022-07-13 18:43:33,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:33,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209455595] [2022-07-13 18:43:33,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:33,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:33,503 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 18:43:33,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:33,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209455595] [2022-07-13 18:43:33,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209455595] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:33,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:33,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:43:33,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229271846] [2022-07-13 18:43:33,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:33,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:43:33,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:33,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:43:33,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:43:33,505 INFO L87 Difference]: Start difference. First operand 2251 states and 3064 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 18:43:33,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:33,804 INFO L93 Difference]: Finished difference Result 3332 states and 4570 transitions. [2022-07-13 18:43:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:43:33,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2022-07-13 18:43:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:33,807 INFO L225 Difference]: With dead ends: 3332 [2022-07-13 18:43:33,807 INFO L226 Difference]: Without dead ends: 2242 [2022-07-13 18:43:33,809 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 18:43:33,809 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 259 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:33,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 814 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:43:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2022-07-13 18:43:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2236. [2022-07-13 18:43:34,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2232 states have (on average 1.3440860215053763) internal successors, (3000), 2235 states have internal predecessors, (3000), 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 18:43:34,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 3000 transitions. [2022-07-13 18:43:34,180 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 3000 transitions. Word has length 55 [2022-07-13 18:43:34,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:34,180 INFO L495 AbstractCegarLoop]: Abstraction has 2236 states and 3000 transitions. [2022-07-13 18:43:34,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 18:43:34,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 3000 transitions. [2022-07-13 18:43:34,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-13 18:43:34,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:34,183 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] [2022-07-13 18:43:34,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 18:43:34,183 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:34,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:34,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1260356730, now seen corresponding path program 1 times [2022-07-13 18:43:34,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:34,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601907325] [2022-07-13 18:43:34,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:34,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:34,213 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 18:43:34,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:34,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601907325] [2022-07-13 18:43:34,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601907325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:34,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:34,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:43:34,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531109871] [2022-07-13 18:43:34,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:34,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:43:34,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:34,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:43:34,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:43:34,216 INFO L87 Difference]: Start difference. First operand 2236 states and 3000 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 18:43:34,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:34,737 INFO L93 Difference]: Finished difference Result 3997 states and 5436 transitions. [2022-07-13 18:43:34,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:43:34,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2022-07-13 18:43:34,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:34,743 INFO L225 Difference]: With dead ends: 3997 [2022-07-13 18:43:34,743 INFO L226 Difference]: Without dead ends: 2740 [2022-07-13 18:43:34,745 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 18:43:34,746 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 348 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:34,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 540 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:43:34,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2022-07-13 18:43:35,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2054. [2022-07-13 18:43:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 2050 states have (on average 1.3482926829268294) internal successors, (2764), 2053 states have internal predecessors, (2764), 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 18:43:35,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2764 transitions. [2022-07-13 18:43:35,131 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2764 transitions. Word has length 56 [2022-07-13 18:43:35,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:35,131 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 2764 transitions. [2022-07-13 18:43:35,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 18:43:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2764 transitions. [2022-07-13 18:43:35,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 18:43:35,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:35,134 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] [2022-07-13 18:43:35,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 18:43:35,134 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:35,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:35,135 INFO L85 PathProgramCache]: Analyzing trace with hash -171160754, now seen corresponding path program 1 times [2022-07-13 18:43:35,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:35,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460589632] [2022-07-13 18:43:35,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:35,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:35,173 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 18:43:35,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:35,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460589632] [2022-07-13 18:43:35,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460589632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:35,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:35,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:43:35,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455714901] [2022-07-13 18:43:35,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:35,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:43:35,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:35,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:43:35,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:43:35,176 INFO L87 Difference]: Start difference. First operand 2054 states and 2764 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 18:43:35,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:35,610 INFO L93 Difference]: Finished difference Result 3721 states and 5059 transitions. [2022-07-13 18:43:35,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:43:35,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2022-07-13 18:43:35,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:35,614 INFO L225 Difference]: With dead ends: 3721 [2022-07-13 18:43:35,614 INFO L226 Difference]: Without dead ends: 2477 [2022-07-13 18:43:35,616 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 18:43:35,616 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 300 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:35,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 458 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:43:35,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2477 states. [2022-07-13 18:43:35,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2477 to 1932. [2022-07-13 18:43:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1928 states have (on average 1.3526970954356847) internal successors, (2608), 1931 states have internal predecessors, (2608), 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 18:43:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2608 transitions. [2022-07-13 18:43:35,962 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2608 transitions. Word has length 57 [2022-07-13 18:43:35,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:35,962 INFO L495 AbstractCegarLoop]: Abstraction has 1932 states and 2608 transitions. [2022-07-13 18:43:35,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 18:43:35,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2608 transitions. [2022-07-13 18:43:35,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 18:43:35,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:35,964 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] [2022-07-13 18:43:35,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 18:43:35,965 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:35,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:35,966 INFO L85 PathProgramCache]: Analyzing trace with hash -544179575, now seen corresponding path program 1 times [2022-07-13 18:43:35,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:35,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727368912] [2022-07-13 18:43:35,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:35,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:36,285 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 18:43:36,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:36,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727368912] [2022-07-13 18:43:36,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727368912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:36,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:36,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 18:43:36,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361780741] [2022-07-13 18:43:36,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:36,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 18:43:36,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:36,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 18:43:36,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:43:36,287 INFO L87 Difference]: Start difference. First operand 1932 states and 2608 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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 18:43:37,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:37,819 INFO L93 Difference]: Finished difference Result 3983 states and 5456 transitions. [2022-07-13 18:43:37,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:43:37,819 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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 57 [2022-07-13 18:43:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:37,823 INFO L225 Difference]: With dead ends: 3983 [2022-07-13 18:43:37,823 INFO L226 Difference]: Without dead ends: 3777 [2022-07-13 18:43:37,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2022-07-13 18:43:37,824 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 2564 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2564 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:37,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2564 Valid, 3210 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:43:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2022-07-13 18:43:38,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 1907. [2022-07-13 18:43:38,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1904 states have (on average 1.3539915966386555) internal successors, (2578), 1906 states have internal predecessors, (2578), 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 18:43:38,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2578 transitions. [2022-07-13 18:43:38,105 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2578 transitions. Word has length 57 [2022-07-13 18:43:38,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:38,105 INFO L495 AbstractCegarLoop]: Abstraction has 1907 states and 2578 transitions. [2022-07-13 18:43:38,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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 18:43:38,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2578 transitions. [2022-07-13 18:43:38,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 18:43:38,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:38,108 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] [2022-07-13 18:43:38,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 18:43:38,108 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:38,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:38,109 INFO L85 PathProgramCache]: Analyzing trace with hash 303331698, now seen corresponding path program 1 times [2022-07-13 18:43:38,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:38,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598429481] [2022-07-13 18:43:38,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:38,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:38,363 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 18:43:38,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:38,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598429481] [2022-07-13 18:43:38,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598429481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:38,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:38,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 18:43:38,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641966802] [2022-07-13 18:43:38,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:38,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 18:43:38,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:38,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 18:43:38,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:43:38,365 INFO L87 Difference]: Start difference. First operand 1907 states and 2578 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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 18:43:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:39,693 INFO L93 Difference]: Finished difference Result 3147 states and 4298 transitions. [2022-07-13 18:43:39,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:43:39,694 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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 57 [2022-07-13 18:43:39,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:39,698 INFO L225 Difference]: With dead ends: 3147 [2022-07-13 18:43:39,698 INFO L226 Difference]: Without dead ends: 3086 [2022-07-13 18:43:39,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-07-13 18:43:39,700 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 2055 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2055 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:39,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2055 Valid, 2761 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:43:39,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2022-07-13 18:43:40,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 1895. [2022-07-13 18:43:40,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1893 states have (on average 1.3544638140517697) internal successors, (2564), 1894 states have internal predecessors, (2564), 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 18:43:40,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2564 transitions. [2022-07-13 18:43:40,052 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2564 transitions. Word has length 57 [2022-07-13 18:43:40,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:40,052 INFO L495 AbstractCegarLoop]: Abstraction has 1895 states and 2564 transitions. [2022-07-13 18:43:40,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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 18:43:40,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2564 transitions. [2022-07-13 18:43:40,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 18:43:40,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:40,053 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] [2022-07-13 18:43:40,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 18:43:40,054 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:40,055 INFO L85 PathProgramCache]: Analyzing trace with hash 839862953, now seen corresponding path program 1 times [2022-07-13 18:43:40,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:40,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25722055] [2022-07-13 18:43:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:40,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:40,277 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 18:43:40,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:40,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25722055] [2022-07-13 18:43:40,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25722055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:40,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:40,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 18:43:40,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207849218] [2022-07-13 18:43:40,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:40,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 18:43:40,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:40,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 18:43:40,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:43:40,279 INFO L87 Difference]: Start difference. First operand 1895 states and 2564 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 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 18:43:41,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:41,892 INFO L93 Difference]: Finished difference Result 4087 states and 5601 transitions. [2022-07-13 18:43:41,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 18:43:41,892 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 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 57 [2022-07-13 18:43:41,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:41,896 INFO L225 Difference]: With dead ends: 4087 [2022-07-13 18:43:41,896 INFO L226 Difference]: Without dead ends: 3873 [2022-07-13 18:43:41,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2022-07-13 18:43:41,897 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 2607 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2607 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:41,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2607 Valid, 2683 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:43:41,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2022-07-13 18:43:42,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 1844. [2022-07-13 18:43:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 1.3575691806836678) internal successors, (2502), 1843 states have internal predecessors, (2502), 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 18:43:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2502 transitions. [2022-07-13 18:43:42,238 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2502 transitions. Word has length 57 [2022-07-13 18:43:42,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:42,238 INFO L495 AbstractCegarLoop]: Abstraction has 1844 states and 2502 transitions. [2022-07-13 18:43:42,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 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 18:43:42,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2502 transitions. [2022-07-13 18:43:42,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 18:43:42,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:42,241 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] [2022-07-13 18:43:42,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 18:43:42,241 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:42,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:42,242 INFO L85 PathProgramCache]: Analyzing trace with hash 485032383, now seen corresponding path program 1 times [2022-07-13 18:43:42,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:42,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220009579] [2022-07-13 18:43:42,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:42,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:42,287 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 18:43:42,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:42,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220009579] [2022-07-13 18:43:42,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220009579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:42,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:42,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:43:42,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316167773] [2022-07-13 18:43:42,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:42,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:43:42,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:42,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:43:42,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:43:42,289 INFO L87 Difference]: Start difference. First operand 1844 states and 2502 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 18:43:43,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:43,013 INFO L93 Difference]: Finished difference Result 4234 states and 5899 transitions. [2022-07-13 18:43:43,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:43:43,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2022-07-13 18:43:43,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:43,016 INFO L225 Difference]: With dead ends: 4234 [2022-07-13 18:43:43,016 INFO L226 Difference]: Without dead ends: 3116 [2022-07-13 18:43:43,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:43:43,018 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1071 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:43,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 636 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:43:43,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2022-07-13 18:43:43,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2748. [2022-07-13 18:43:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 2747 states have (on average 1.358937022206043) internal successors, (3733), 2747 states have internal predecessors, (3733), 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 18:43:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 3733 transitions. [2022-07-13 18:43:43,589 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 3733 transitions. Word has length 66 [2022-07-13 18:43:43,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:43,589 INFO L495 AbstractCegarLoop]: Abstraction has 2748 states and 3733 transitions. [2022-07-13 18:43:43,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 18:43:43,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 3733 transitions. [2022-07-13 18:43:43,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 18:43:43,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:43,593 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] [2022-07-13 18:43:43,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 18:43:43,594 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:43,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:43,594 INFO L85 PathProgramCache]: Analyzing trace with hash -656464105, now seen corresponding path program 1 times [2022-07-13 18:43:43,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:43,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318641743] [2022-07-13 18:43:43,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:43,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:43,654 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 18:43:43,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:43,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318641743] [2022-07-13 18:43:43,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318641743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:43,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:43,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:43:43,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722955272] [2022-07-13 18:43:43,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:43,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:43:43,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:43,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:43:43,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:43:43,656 INFO L87 Difference]: Start difference. First operand 2748 states and 3733 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 18:43:44,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:44,406 INFO L93 Difference]: Finished difference Result 2754 states and 3736 transitions. [2022-07-13 18:43:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:43:44,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2022-07-13 18:43:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:44,411 INFO L225 Difference]: With dead ends: 2754 [2022-07-13 18:43:44,411 INFO L226 Difference]: Without dead ends: 2283 [2022-07-13 18:43:44,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:43:44,412 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 580 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:44,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 694 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:43:44,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2022-07-13 18:43:44,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2279. [2022-07-13 18:43:44,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 1.36215978928885) internal successors, (3103), 2278 states have internal predecessors, (3103), 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 18:43:44,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3103 transitions. [2022-07-13 18:43:44,964 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3103 transitions. Word has length 67 [2022-07-13 18:43:44,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:44,964 INFO L495 AbstractCegarLoop]: Abstraction has 2279 states and 3103 transitions. [2022-07-13 18:43:44,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 18:43:44,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3103 transitions. [2022-07-13 18:43:44,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 18:43:44,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:44,967 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] [2022-07-13 18:43:44,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 18:43:44,967 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:44,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:44,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1272488439, now seen corresponding path program 1 times [2022-07-13 18:43:44,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:44,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322139644] [2022-07-13 18:43:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:44,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:45,025 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 18:43:45,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:45,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322139644] [2022-07-13 18:43:45,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322139644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:45,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:45,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:43:45,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484040709] [2022-07-13 18:43:45,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:45,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:43:45,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:45,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:43:45,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:43:45,027 INFO L87 Difference]: Start difference. First operand 2279 states and 3103 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 18:43:46,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:46,073 INFO L93 Difference]: Finished difference Result 5375 states and 7427 transitions. [2022-07-13 18:43:46,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:43:46,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2022-07-13 18:43:46,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:46,077 INFO L225 Difference]: With dead ends: 5375 [2022-07-13 18:43:46,077 INFO L226 Difference]: Without dead ends: 3757 [2022-07-13 18:43:46,079 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 18:43:46,079 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 123 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:46,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 557 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:43:46,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2022-07-13 18:43:46,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3507. [2022-07-13 18:43:46,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3506 states have (on average 1.369937250427838) internal successors, (4803), 3506 states have internal predecessors, (4803), 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 18:43:46,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 4803 transitions. [2022-07-13 18:43:46,936 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 4803 transitions. Word has length 68 [2022-07-13 18:43:46,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:46,936 INFO L495 AbstractCegarLoop]: Abstraction has 3507 states and 4803 transitions. [2022-07-13 18:43:46,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 18:43:46,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 4803 transitions. [2022-07-13 18:43:46,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-13 18:43:46,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:46,939 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] [2022-07-13 18:43:46,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 18:43:46,939 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:46,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:46,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1794430615, now seen corresponding path program 1 times [2022-07-13 18:43:46,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:46,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760876757] [2022-07-13 18:43:46,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:46,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:46,996 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 18:43:46,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:46,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760876757] [2022-07-13 18:43:46,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760876757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:46,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:46,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:43:46,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041855145] [2022-07-13 18:43:46,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:46,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:43:46,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:46,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:43:46,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:43:46,998 INFO L87 Difference]: Start difference. First operand 3507 states and 4803 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 18:43:48,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:48,485 INFO L93 Difference]: Finished difference Result 8767 states and 12085 transitions. [2022-07-13 18:43:48,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:43:48,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2022-07-13 18:43:48,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:48,491 INFO L225 Difference]: With dead ends: 8767 [2022-07-13 18:43:48,491 INFO L226 Difference]: Without dead ends: 5783 [2022-07-13 18:43:48,494 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 18:43:48,494 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 118 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:48,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 553 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:43:48,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5783 states. [2022-07-13 18:43:49,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5783 to 5365. [2022-07-13 18:43:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5365 states, 5364 states have (on average 1.360738255033557) internal successors, (7299), 5364 states have internal predecessors, (7299), 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 18:43:49,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5365 states to 5365 states and 7299 transitions. [2022-07-13 18:43:49,815 INFO L78 Accepts]: Start accepts. Automaton has 5365 states and 7299 transitions. Word has length 70 [2022-07-13 18:43:49,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:49,815 INFO L495 AbstractCegarLoop]: Abstraction has 5365 states and 7299 transitions. [2022-07-13 18:43:49,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 18:43:49,815 INFO L276 IsEmpty]: Start isEmpty. Operand 5365 states and 7299 transitions. [2022-07-13 18:43:49,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-13 18:43:49,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:49,818 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] [2022-07-13 18:43:49,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 18:43:49,818 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:49,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:49,818 INFO L85 PathProgramCache]: Analyzing trace with hash -530798665, now seen corresponding path program 1 times [2022-07-13 18:43:49,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:49,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661761269] [2022-07-13 18:43:49,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:49,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:49,850 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 18:43:49,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:49,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661761269] [2022-07-13 18:43:49,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661761269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:49,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:49,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:43:49,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035275772] [2022-07-13 18:43:49,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:49,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:43:49,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:49,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:43:49,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:43:49,853 INFO L87 Difference]: Start difference. First operand 5365 states and 7299 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 18:43:52,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:43:52,668 INFO L93 Difference]: Finished difference Result 14489 states and 19829 transitions. [2022-07-13 18:43:52,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:43:52,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2022-07-13 18:43:52,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:43:52,678 INFO L225 Difference]: With dead ends: 14489 [2022-07-13 18:43:52,679 INFO L226 Difference]: Without dead ends: 9647 [2022-07-13 18:43:52,682 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 18:43:52,682 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 97 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:43:52,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 528 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:43:52,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9647 states. [2022-07-13 18:43:55,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9647 to 8813. [2022-07-13 18:43:55,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8813 states, 8812 states have (on average 1.3571266454834316) internal successors, (11959), 8812 states have internal predecessors, (11959), 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 18:43:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8813 states to 8813 states and 11959 transitions. [2022-07-13 18:43:55,101 INFO L78 Accepts]: Start accepts. Automaton has 8813 states and 11959 transitions. Word has length 70 [2022-07-13 18:43:55,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:43:55,101 INFO L495 AbstractCegarLoop]: Abstraction has 8813 states and 11959 transitions. [2022-07-13 18:43:55,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 18:43:55,101 INFO L276 IsEmpty]: Start isEmpty. Operand 8813 states and 11959 transitions. [2022-07-13 18:43:55,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 18:43:55,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:43:55,103 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] [2022-07-13 18:43:55,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 18:43:55,104 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:43:55,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:43:55,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1176069985, now seen corresponding path program 1 times [2022-07-13 18:43:55,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:43:55,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127243388] [2022-07-13 18:43:55,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:43:55,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:43:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:43:55,159 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 18:43:55,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:43:55,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127243388] [2022-07-13 18:43:55,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127243388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:43:55,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:43:55,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:43:55,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476614580] [2022-07-13 18:43:55,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:43:55,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:43:55,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:43:55,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:43:55,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:43:55,162 INFO L87 Difference]: Start difference. First operand 8813 states and 11959 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 18:44:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:44:00,809 INFO L93 Difference]: Finished difference Result 18941 states and 25281 transitions. [2022-07-13 18:44:00,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:44:00,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 72 [2022-07-13 18:44:00,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:44:00,830 INFO L225 Difference]: With dead ends: 18941 [2022-07-13 18:44:00,830 INFO L226 Difference]: Without dead ends: 18939 [2022-07-13 18:44:00,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:44:00,834 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 344 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:44:00,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1309 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:44:00,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18939 states. [2022-07-13 18:44:03,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18939 to 9725. [2022-07-13 18:44:03,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9725 states, 9724 states have (on average 1.3236322501028384) internal successors, (12871), 9724 states have internal predecessors, (12871), 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 18:44:03,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9725 states to 9725 states and 12871 transitions. [2022-07-13 18:44:03,695 INFO L78 Accepts]: Start accepts. Automaton has 9725 states and 12871 transitions. Word has length 72 [2022-07-13 18:44:03,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:44:03,696 INFO L495 AbstractCegarLoop]: Abstraction has 9725 states and 12871 transitions. [2022-07-13 18:44:03,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 18:44:03,696 INFO L276 IsEmpty]: Start isEmpty. Operand 9725 states and 12871 transitions. [2022-07-13 18:44:03,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-13 18:44:03,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:44:03,698 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] [2022-07-13 18:44:03,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 18:44:03,698 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:44:03,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:44:03,699 INFO L85 PathProgramCache]: Analyzing trace with hash 406807320, now seen corresponding path program 1 times [2022-07-13 18:44:03,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:44:03,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744116297] [2022-07-13 18:44:03,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:44:03,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:44:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:44:03,732 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 18:44:03,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:44:03,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744116297] [2022-07-13 18:44:03,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744116297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:44:03,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:44:03,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:44:03,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151365870] [2022-07-13 18:44:03,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:44:03,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:44:03,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:44:03,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:44:03,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:44:03,735 INFO L87 Difference]: Start difference. First operand 9725 states and 12871 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 18:44:08,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:44:08,557 INFO L93 Difference]: Finished difference Result 23589 states and 31277 transitions. [2022-07-13 18:44:08,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:44:08,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2022-07-13 18:44:08,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:44:08,574 INFO L225 Difference]: With dead ends: 23589 [2022-07-13 18:44:08,574 INFO L226 Difference]: Without dead ends: 14387 [2022-07-13 18:44:08,582 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 18:44:08,582 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 193 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:44:08,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 377 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:44:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14387 states. [2022-07-13 18:44:12,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14387 to 14233. [2022-07-13 18:44:12,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14233 states, 14232 states have (on average 1.303752107925801) internal successors, (18555), 14232 states have internal predecessors, (18555), 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 18:44:12,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14233 states to 14233 states and 18555 transitions. [2022-07-13 18:44:12,833 INFO L78 Accepts]: Start accepts. Automaton has 14233 states and 18555 transitions. Word has length 73 [2022-07-13 18:44:12,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:44:12,833 INFO L495 AbstractCegarLoop]: Abstraction has 14233 states and 18555 transitions. [2022-07-13 18:44:12,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 18:44:12,833 INFO L276 IsEmpty]: Start isEmpty. Operand 14233 states and 18555 transitions. [2022-07-13 18:44:12,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-13 18:44:12,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:44:12,836 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] [2022-07-13 18:44:12,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 18:44:12,836 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:44:12,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:44:12,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1519050461, now seen corresponding path program 1 times [2022-07-13 18:44:12,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:44:12,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359854392] [2022-07-13 18:44:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:44:12,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:44:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:44:12,891 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 18:44:12,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:44:12,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359854392] [2022-07-13 18:44:12,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359854392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:44:12,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:44:12,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:44:12,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075466302] [2022-07-13 18:44:12,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:44:12,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:44:12,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:44:12,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:44:12,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:44:12,894 INFO L87 Difference]: Start difference. First operand 14233 states and 18555 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 18:44:18,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:44:18,074 INFO L93 Difference]: Finished difference Result 20743 states and 27195 transitions. [2022-07-13 18:44:18,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:44:18,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2022-07-13 18:44:18,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:44:18,092 INFO L225 Difference]: With dead ends: 20743 [2022-07-13 18:44:18,092 INFO L226 Difference]: Without dead ends: 17267 [2022-07-13 18:44:18,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:44:18,097 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 637 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:44:18,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 803 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:44:18,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17267 states. [2022-07-13 18:44:23,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17267 to 16091. [2022-07-13 18:44:23,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16091 states, 16090 states have (on average 1.2998756991920448) internal successors, (20915), 16090 states have internal predecessors, (20915), 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 18:44:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16091 states to 16091 states and 20915 transitions. [2022-07-13 18:44:23,105 INFO L78 Accepts]: Start accepts. Automaton has 16091 states and 20915 transitions. Word has length 74 [2022-07-13 18:44:23,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:44:23,105 INFO L495 AbstractCegarLoop]: Abstraction has 16091 states and 20915 transitions. [2022-07-13 18:44:23,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 18:44:23,106 INFO L276 IsEmpty]: Start isEmpty. Operand 16091 states and 20915 transitions. [2022-07-13 18:44:23,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 18:44:23,111 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:44:23,111 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:44:23,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 18:44:23,112 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:44:23,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:44:23,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1899335398, now seen corresponding path program 1 times [2022-07-13 18:44:23,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:44:23,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000638176] [2022-07-13 18:44:23,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:44:23,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:44:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:44:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 18:44:23,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:44:23,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000638176] [2022-07-13 18:44:23,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000638176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:44:23,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:44:23,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:44:23,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475308666] [2022-07-13 18:44:23,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:44:23,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:44:23,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:44:23,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:44:23,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:44:23,200 INFO L87 Difference]: Start difference. First operand 16091 states and 20915 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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 18:44:39,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:44:39,087 INFO L93 Difference]: Finished difference Result 58864 states and 76348 transitions. [2022-07-13 18:44:39,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 18:44:39,088 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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 92 [2022-07-13 18:44:39,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:44:39,163 INFO L225 Difference]: With dead ends: 58864 [2022-07-13 18:44:39,163 INFO L226 Difference]: Without dead ends: 51000 [2022-07-13 18:44:39,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2022-07-13 18:44:39,182 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 1458 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:44:39,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 1341 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:44:39,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51000 states. [2022-07-13 18:44:44,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51000 to 16033. [2022-07-13 18:44:44,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16033 states, 16032 states have (on average 1.3002120758483033) internal successors, (20845), 16032 states have internal predecessors, (20845), 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 18:44:44,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16033 states to 16033 states and 20845 transitions. [2022-07-13 18:44:44,786 INFO L78 Accepts]: Start accepts. Automaton has 16033 states and 20845 transitions. Word has length 92 [2022-07-13 18:44:44,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:44:44,786 INFO L495 AbstractCegarLoop]: Abstraction has 16033 states and 20845 transitions. [2022-07-13 18:44:44,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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 18:44:44,786 INFO L276 IsEmpty]: Start isEmpty. Operand 16033 states and 20845 transitions. [2022-07-13 18:44:44,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 18:44:44,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:44:44,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:44:44,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 18:44:44,792 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:44:44,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:44:44,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1332578409, now seen corresponding path program 1 times [2022-07-13 18:44:44,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:44:44,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372990648] [2022-07-13 18:44:44,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:44:44,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:44:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:44:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 18:44:44,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:44:44,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372990648] [2022-07-13 18:44:44,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372990648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:44:44,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:44:44,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:44:44,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826370445] [2022-07-13 18:44:44,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:44:44,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:44:44,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:44:44,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:44:44,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:44:44,889 INFO L87 Difference]: Start difference. First operand 16033 states and 20845 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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 18:44:55,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:44:55,876 INFO L93 Difference]: Finished difference Result 40121 states and 52033 transitions. [2022-07-13 18:44:55,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:44:55,876 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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 92 [2022-07-13 18:44:55,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:44:55,918 INFO L225 Difference]: With dead ends: 40121 [2022-07-13 18:44:55,919 INFO L226 Difference]: Without dead ends: 32439 [2022-07-13 18:44:55,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-07-13 18:44:55,943 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1730 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:44:55,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 948 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:44:55,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32439 states. [2022-07-13 18:45:01,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32439 to 15999. [2022-07-13 18:45:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15999 states, 15998 states have (on average 1.3002875359419928) internal successors, (20802), 15998 states have internal predecessors, (20802), 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 18:45:01,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15999 states to 15999 states and 20802 transitions. [2022-07-13 18:45:01,594 INFO L78 Accepts]: Start accepts. Automaton has 15999 states and 20802 transitions. Word has length 92 [2022-07-13 18:45:01,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:45:01,594 INFO L495 AbstractCegarLoop]: Abstraction has 15999 states and 20802 transitions. [2022-07-13 18:45:01,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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 18:45:01,595 INFO L276 IsEmpty]: Start isEmpty. Operand 15999 states and 20802 transitions. [2022-07-13 18:45:01,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 18:45:01,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:45:01,601 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:45:01,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 18:45:01,602 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 18:45:01,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:45:01,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1785022088, now seen corresponding path program 1 times [2022-07-13 18:45:01,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:45:01,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974128930] [2022-07-13 18:45:01,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:45:01,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:45:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:45:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:45:01,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:45:01,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974128930] [2022-07-13 18:45:01,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974128930] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:45:01,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599564707] [2022-07-13 18:45:01,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:45:01,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:45:01,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:45:01,779 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) [2022-07-13 18:45:01,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 18:45:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:45:01,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 18:45:01,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:45:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:45:03,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:45:04,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:45:04,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599564707] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:45:04,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:45:04,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2022-07-13 18:45:04,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064573136] [2022-07-13 18:45:04,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:45:04,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 18:45:04,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:45:04,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 18:45:04,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2022-07-13 18:45:04,110 INFO L87 Difference]: Start difference. First operand 15999 states and 20802 transitions. Second operand has 30 states, 30 states have (on average 8.133333333333333) internal successors, (244), 29 states have internal predecessors, (244), 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 18:47:00,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:47:00,965 INFO L93 Difference]: Finished difference Result 224265 states and 285579 transitions. [2022-07-13 18:47:00,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 271 states. [2022-07-13 18:47:00,966 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.133333333333333) internal successors, (244), 29 states have internal predecessors, (244), 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 93 [2022-07-13 18:47:00,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:47:01,452 INFO L225 Difference]: With dead ends: 224265 [2022-07-13 18:47:01,452 INFO L226 Difference]: Without dead ends: 216517 [2022-07-13 18:47:01,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36899 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=12438, Invalid=76664, Unknown=0, NotChecked=0, Total=89102 [2022-07-13 18:47:01,552 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 9310 mSDsluCounter, 10744 mSDsCounter, 0 mSdLazyCounter, 9923 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9310 SdHoareTripleChecker+Valid, 11256 SdHoareTripleChecker+Invalid, 10354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 9923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:47:01,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9310 Valid, 11256 Invalid, 10354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 9923 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-13 18:47:01,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216517 states.