./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-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.3.1.ufo.UNBOUNDED.pals.c.v+nlh-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 43a630ae12d5f6fa3f8faf425527884a616bada52a1fbcc4f1f28adcf4c6e228 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:39:09,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:39:09,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:39:09,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:39:09,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:39:09,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:39:09,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:39:09,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:39:09,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:39:09,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:39:09,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:39:09,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:39:09,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:39:09,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:39:09,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:39:09,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:39:09,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:39:09,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:39:09,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:39:09,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:39:09,884 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:39:09,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:39:09,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:39:09,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:39:09,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:39:09,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:39:09,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:39:09,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:39:09,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:39:09,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:39:09,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:39:09,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:39:09,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:39:09,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:39:09,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:39:09,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:39:09,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:39:09,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:39:09,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:39:09,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:39:09,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:39:09,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:39:09,908 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:39:09,937 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:39:09,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:39:09,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:39:09,938 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:39:09,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:39:09,939 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:39:09,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:39:09,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:39:09,939 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:39:09,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:39:09,940 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:39:09,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:39:09,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:39:09,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:39:09,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:39:09,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:39:09,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:39:09,942 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:39:09,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:39:09,943 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:39:09,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:39:09,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:39:09,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:39:09,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:39:09,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:39:09,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:39:09,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:39:09,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:39:09,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:39:09,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:39:09,945 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:39:09,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:39:09,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:39:09,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43a630ae12d5f6fa3f8faf425527884a616bada52a1fbcc4f1f28adcf4c6e228 [2022-07-13 18:39:10,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:39:10,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:39:10,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:39:10,262 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:39:10,263 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:39:10,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-13 18:39:10,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a181a518/971011626fc14b5b8586209023238b0c/FLAG7dcc02196 [2022-07-13 18:39:10,773 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:39:10,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-13 18:39:10,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a181a518/971011626fc14b5b8586209023238b0c/FLAG7dcc02196 [2022-07-13 18:39:11,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a181a518/971011626fc14b5b8586209023238b0c [2022-07-13 18:39:11,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:39:11,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:39:11,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:39:11,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:39:11,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:39:11,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:39:11" (1/1) ... [2022-07-13 18:39:11,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f311a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:39:11, skipping insertion in model container [2022-07-13 18:39:11,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:39:11" (1/1) ... [2022-07-13 18:39:11,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:39:11,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:39:11,486 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.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2022-07-13 18:39:11,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:39:11,555 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:39:11,622 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.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2022-07-13 18:39:11,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:39:11,671 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:39:11,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:39:11 WrapperNode [2022-07-13 18:39:11,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:39:11,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:39:11,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:39:11,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:39:11,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:39:11" (1/1) ... [2022-07-13 18:39:11,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:39:11" (1/1) ... [2022-07-13 18:39:11,748 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 595 [2022-07-13 18:39:11,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:39:11,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:39:11,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:39:11,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:39:11,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:39:11" (1/1) ... [2022-07-13 18:39:11,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:39:11" (1/1) ... [2022-07-13 18:39:11,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:39:11" (1/1) ... [2022-07-13 18:39:11,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:39:11" (1/1) ... [2022-07-13 18:39:11,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:39:11" (1/1) ... [2022-07-13 18:39:11,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:39:11" (1/1) ... [2022-07-13 18:39:11,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:39:11" (1/1) ... [2022-07-13 18:39:11,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:39:11,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:39:11,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:39:11,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:39:11,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:39:11" (1/1) ... [2022-07-13 18:39:11,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:39:11,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:39:11,849 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 18:39:11,872 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 18:39:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:39:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:39:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:39:11,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:39:12,001 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:39:12,002 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:39:12,414 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:39:12,422 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:39:12,423 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 18:39:12,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:39:12 BoogieIcfgContainer [2022-07-13 18:39:12,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:39:12,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:39:12,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:39:12,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:39:12,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:39:11" (1/3) ... [2022-07-13 18:39:12,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9638293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:39:12, skipping insertion in model container [2022-07-13 18:39:12,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:39:11" (2/3) ... [2022-07-13 18:39:12,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9638293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:39:12, skipping insertion in model container [2022-07-13 18:39:12,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:39:12" (3/3) ... [2022-07-13 18:39:12,433 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-13 18:39:12,446 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:39:12,446 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:39:12,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:39:12,528 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@42a60aa8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@716fcce9 [2022-07-13 18:39:12,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:39:12,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 159 states have (on average 1.7044025157232705) internal successors, (271), 160 states have internal predecessors, (271), 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 18:39:12,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-13 18:39:12,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:12,542 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] [2022-07-13 18:39:12,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:12,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:12,547 INFO L85 PathProgramCache]: Analyzing trace with hash 293786216, now seen corresponding path program 1 times [2022-07-13 18:39:12,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:12,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741503252] [2022-07-13 18:39:12,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:12,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:12,928 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 18:39:12,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:12,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741503252] [2022-07-13 18:39:12,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741503252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:12,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:12,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:39:12,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242431544] [2022-07-13 18:39:12,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:12,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:39:12,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:12,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:39:12,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:39:12,973 INFO L87 Difference]: Start difference. First operand has 161 states, 159 states have (on average 1.7044025157232705) internal successors, (271), 160 states have internal predecessors, (271), 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 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 18:39:13,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:13,249 INFO L93 Difference]: Finished difference Result 516 states and 834 transitions. [2022-07-13 18:39:13,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:39:13,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 49 [2022-07-13 18:39:13,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:13,278 INFO L225 Difference]: With dead ends: 516 [2022-07-13 18:39:13,278 INFO L226 Difference]: Without dead ends: 437 [2022-07-13 18:39:13,283 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 18:39:13,289 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 908 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:39:13,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 1286 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:39:13,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-13 18:39:13,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 255. [2022-07-13 18:39:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.515748031496063) internal successors, (385), 254 states have internal predecessors, (385), 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 18:39:13,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 385 transitions. [2022-07-13 18:39:13,369 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 385 transitions. Word has length 49 [2022-07-13 18:39:13,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:13,370 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 385 transitions. [2022-07-13 18:39:13,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 18:39:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 385 transitions. [2022-07-13 18:39:13,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-13 18:39:13,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:13,374 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 18:39:13,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:39:13,375 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:13,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:13,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1697275801, now seen corresponding path program 1 times [2022-07-13 18:39:13,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:13,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278566657] [2022-07-13 18:39:13,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:13,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:13,546 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 18:39:13,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:13,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278566657] [2022-07-13 18:39:13,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278566657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:13,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:13,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:39:13,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748802573] [2022-07-13 18:39:13,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:13,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:39:13,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:13,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:39:13,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:39:13,555 INFO L87 Difference]: Start difference. First operand 255 states and 385 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 18:39:13,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:13,614 INFO L93 Difference]: Finished difference Result 627 states and 965 transitions. [2022-07-13 18:39:13,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:39:13,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 18:39:13,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:13,618 INFO L225 Difference]: With dead ends: 627 [2022-07-13 18:39:13,618 INFO L226 Difference]: Without dead ends: 429 [2022-07-13 18:39:13,625 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 18:39:13,627 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 160 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 422 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 18:39:13,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 422 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:39:13,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-07-13 18:39:13,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 427. [2022-07-13 18:39:13,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.5046948356807512) internal successors, (641), 426 states have internal predecessors, (641), 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 18:39:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 641 transitions. [2022-07-13 18:39:13,677 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 641 transitions. Word has length 52 [2022-07-13 18:39:13,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:13,678 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 641 transitions. [2022-07-13 18:39:13,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 18:39:13,679 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 641 transitions. [2022-07-13 18:39:13,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-13 18:39:13,687 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:13,688 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 18:39:13,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:39:13,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:13,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:13,694 INFO L85 PathProgramCache]: Analyzing trace with hash -195371450, now seen corresponding path program 1 times [2022-07-13 18:39:13,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:13,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536792066] [2022-07-13 18:39:13,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:13,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:13,798 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 18:39:13,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:13,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536792066] [2022-07-13 18:39:13,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536792066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:13,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:13,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:39:13,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881993966] [2022-07-13 18:39:13,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:13,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:39:13,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:13,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:39:13,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:39:13,802 INFO L87 Difference]: Start difference. First operand 427 states and 641 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 18:39:13,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:13,866 INFO L93 Difference]: Finished difference Result 1077 states and 1638 transitions. [2022-07-13 18:39:13,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:39:13,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 18:39:13,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:13,871 INFO L225 Difference]: With dead ends: 1077 [2022-07-13 18:39:13,871 INFO L226 Difference]: Without dead ends: 749 [2022-07-13 18:39:13,875 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 18:39:13,877 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 159 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:39:13,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 436 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:39:13,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-07-13 18:39:13,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 747. [2022-07-13 18:39:13,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 1.4946380697050938) internal successors, (1115), 746 states have internal predecessors, (1115), 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 18:39:13,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1115 transitions. [2022-07-13 18:39:13,928 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1115 transitions. Word has length 52 [2022-07-13 18:39:13,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:13,929 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1115 transitions. [2022-07-13 18:39:13,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 18:39:13,929 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1115 transitions. [2022-07-13 18:39:13,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-13 18:39:13,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:13,931 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 18:39:13,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:39:13,931 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:13,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:13,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1046972601, now seen corresponding path program 1 times [2022-07-13 18:39:13,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:13,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656922749] [2022-07-13 18:39:13,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:13,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:13,979 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 18:39:13,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:13,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656922749] [2022-07-13 18:39:13,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656922749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:13,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:13,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:39:13,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185499080] [2022-07-13 18:39:13,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:13,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:39:13,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:13,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:39:13,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:39:13,982 INFO L87 Difference]: Start difference. First operand 747 states and 1115 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 18:39:14,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:14,080 INFO L93 Difference]: Finished difference Result 1857 states and 2792 transitions. [2022-07-13 18:39:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:39:14,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 18:39:14,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:14,086 INFO L225 Difference]: With dead ends: 1857 [2022-07-13 18:39:14,087 INFO L226 Difference]: Without dead ends: 1293 [2022-07-13 18:39:14,088 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 18:39:14,089 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 146 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:39:14,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 436 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:39:14,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2022-07-13 18:39:14,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1291. [2022-07-13 18:39:14,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1290 states have (on average 1.4751937984496124) internal successors, (1903), 1290 states have internal predecessors, (1903), 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 18:39:14,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1903 transitions. [2022-07-13 18:39:14,165 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1903 transitions. Word has length 52 [2022-07-13 18:39:14,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:14,165 INFO L495 AbstractCegarLoop]: Abstraction has 1291 states and 1903 transitions. [2022-07-13 18:39:14,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 18:39:14,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1903 transitions. [2022-07-13 18:39:14,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 18:39:14,167 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:14,167 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 18:39:14,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:39:14,168 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:14,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:14,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1633425885, now seen corresponding path program 1 times [2022-07-13 18:39:14,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:14,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227204755] [2022-07-13 18:39:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:14,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:14,257 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 18:39:14,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:14,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227204755] [2022-07-13 18:39:14,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227204755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:14,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:14,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:39:14,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489801631] [2022-07-13 18:39:14,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:14,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:39:14,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:14,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:39:14,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:39:14,262 INFO L87 Difference]: Start difference. First operand 1291 states and 1903 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 18:39:14,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:14,489 INFO L93 Difference]: Finished difference Result 2511 states and 3768 transitions. [2022-07-13 18:39:14,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:39:14,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 18:39:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:14,500 INFO L225 Difference]: With dead ends: 2511 [2022-07-13 18:39:14,501 INFO L226 Difference]: Without dead ends: 2145 [2022-07-13 18:39:14,502 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 18:39:14,503 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 640 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:39:14,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 1142 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:39:14,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2022-07-13 18:39:14,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 1740. [2022-07-13 18:39:14,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1739 states have (on average 1.4836112708453133) internal successors, (2580), 1739 states have internal predecessors, (2580), 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 18:39:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2580 transitions. [2022-07-13 18:39:14,644 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2580 transitions. Word has length 53 [2022-07-13 18:39:14,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:14,645 INFO L495 AbstractCegarLoop]: Abstraction has 1740 states and 2580 transitions. [2022-07-13 18:39:14,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 18:39:14,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2580 transitions. [2022-07-13 18:39:14,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 18:39:14,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:14,650 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 18:39:14,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:39:14,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:14,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:14,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1286312845, now seen corresponding path program 1 times [2022-07-13 18:39:14,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:14,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660176304] [2022-07-13 18:39:14,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:14,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:14,738 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 18:39:14,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:14,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660176304] [2022-07-13 18:39:14,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660176304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:14,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:14,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:39:14,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006706543] [2022-07-13 18:39:14,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:14,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:39:14,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:14,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:39:14,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:39:14,740 INFO L87 Difference]: Start difference. First operand 1740 states and 2580 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 18:39:14,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:14,952 INFO L93 Difference]: Finished difference Result 2960 states and 4445 transitions. [2022-07-13 18:39:14,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:39:14,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 18:39:14,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:14,962 INFO L225 Difference]: With dead ends: 2960 [2022-07-13 18:39:14,963 INFO L226 Difference]: Without dead ends: 2594 [2022-07-13 18:39:14,964 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 18:39:14,965 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 632 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:39:14,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 997 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:39:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2022-07-13 18:39:15,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2085. [2022-07-13 18:39:15,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 2084 states have (on average 1.4889635316698657) internal successors, (3103), 2084 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 18:39:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3103 transitions. [2022-07-13 18:39:15,114 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3103 transitions. Word has length 53 [2022-07-13 18:39:15,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:15,115 INFO L495 AbstractCegarLoop]: Abstraction has 2085 states and 3103 transitions. [2022-07-13 18:39:15,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 18:39:15,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3103 transitions. [2022-07-13 18:39:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 18:39:15,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:15,117 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 18:39:15,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:39:15,117 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:15,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:15,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1015763425, now seen corresponding path program 1 times [2022-07-13 18:39:15,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:15,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794172898] [2022-07-13 18:39:15,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:15,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:15,182 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 18:39:15,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:15,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794172898] [2022-07-13 18:39:15,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794172898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:15,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:15,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:39:15,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220065550] [2022-07-13 18:39:15,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:15,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:39:15,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:15,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:39:15,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:39:15,184 INFO L87 Difference]: Start difference. First operand 2085 states and 3103 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 18:39:15,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:15,416 INFO L93 Difference]: Finished difference Result 3359 states and 5045 transitions. [2022-07-13 18:39:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:39:15,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 18:39:15,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:15,428 INFO L225 Difference]: With dead ends: 3359 [2022-07-13 18:39:15,428 INFO L226 Difference]: Without dead ends: 2993 [2022-07-13 18:39:15,429 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 18:39:15,430 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 636 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:39:15,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1068 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:39:15,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2022-07-13 18:39:15,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 2375. [2022-07-13 18:39:15,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 2374 states have (on average 1.4928390901432183) internal successors, (3544), 2374 states have internal predecessors, (3544), 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 18:39:15,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3544 transitions. [2022-07-13 18:39:15,588 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3544 transitions. Word has length 53 [2022-07-13 18:39:15,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:15,588 INFO L495 AbstractCegarLoop]: Abstraction has 2375 states and 3544 transitions. [2022-07-13 18:39:15,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 18:39:15,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3544 transitions. [2022-07-13 18:39:15,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 18:39:15,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:15,590 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 18:39:15,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:39:15,590 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:15,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:15,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1968890954, now seen corresponding path program 1 times [2022-07-13 18:39:15,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:15,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112626926] [2022-07-13 18:39:15,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:15,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:15,634 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 18:39:15,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:15,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112626926] [2022-07-13 18:39:15,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112626926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:15,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:15,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:39:15,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827488596] [2022-07-13 18:39:15,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:15,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:39:15,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:15,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:39:15,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:39:15,637 INFO L87 Difference]: Start difference. First operand 2375 states and 3544 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 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 18:39:16,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:16,160 INFO L93 Difference]: Finished difference Result 6743 states and 10099 transitions. [2022-07-13 18:39:16,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:39:16,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 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 18:39:16,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:16,176 INFO L225 Difference]: With dead ends: 6743 [2022-07-13 18:39:16,176 INFO L226 Difference]: Without dead ends: 4395 [2022-07-13 18:39:16,180 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 18:39:16,181 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 935 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:39:16,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 220 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:39:16,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4395 states. [2022-07-13 18:39:16,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4395 to 4368. [2022-07-13 18:39:16,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 1.4868330661781544) internal successors, (6493), 4367 states have internal predecessors, (6493), 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 18:39:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 6493 transitions. [2022-07-13 18:39:16,528 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 6493 transitions. Word has length 57 [2022-07-13 18:39:16,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:16,529 INFO L495 AbstractCegarLoop]: Abstraction has 4368 states and 6493 transitions. [2022-07-13 18:39:16,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 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 18:39:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 6493 transitions. [2022-07-13 18:39:16,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 18:39:16,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:16,538 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 18:39:16,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:39:16,539 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:16,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:16,539 INFO L85 PathProgramCache]: Analyzing trace with hash -108107112, now seen corresponding path program 1 times [2022-07-13 18:39:16,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:16,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047872463] [2022-07-13 18:39:16,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:16,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:16,612 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 18:39:16,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:16,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047872463] [2022-07-13 18:39:16,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047872463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:16,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:16,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:39:16,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379994623] [2022-07-13 18:39:16,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:16,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:39:16,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:16,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:39:16,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:39:16,615 INFO L87 Difference]: Start difference. First operand 4368 states and 6493 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 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 18:39:17,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:17,223 INFO L93 Difference]: Finished difference Result 10465 states and 15544 transitions. [2022-07-13 18:39:17,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:39:17,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 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 18:39:17,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:17,247 INFO L225 Difference]: With dead ends: 10465 [2022-07-13 18:39:17,248 INFO L226 Difference]: Without dead ends: 6142 [2022-07-13 18:39:17,255 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 18:39:17,259 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 894 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:39:17,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 230 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:39:17,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6142 states. [2022-07-13 18:39:17,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6142 to 6108. [2022-07-13 18:39:17,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6108 states, 6107 states have (on average 1.4735549369575895) internal successors, (8999), 6107 states have internal predecessors, (8999), 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 18:39:17,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6108 states to 6108 states and 8999 transitions. [2022-07-13 18:39:17,793 INFO L78 Accepts]: Start accepts. Automaton has 6108 states and 8999 transitions. Word has length 57 [2022-07-13 18:39:17,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:17,793 INFO L495 AbstractCegarLoop]: Abstraction has 6108 states and 8999 transitions. [2022-07-13 18:39:17,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 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 18:39:17,794 INFO L276 IsEmpty]: Start isEmpty. Operand 6108 states and 8999 transitions. [2022-07-13 18:39:17,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-13 18:39:17,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:17,797 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] [2022-07-13 18:39:17,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:39:17,797 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:17,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:17,798 INFO L85 PathProgramCache]: Analyzing trace with hash 871846780, now seen corresponding path program 1 times [2022-07-13 18:39:17,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:17,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892072289] [2022-07-13 18:39:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:17,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:17,872 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 18:39:17,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:17,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892072289] [2022-07-13 18:39:17,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892072289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:17,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:17,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:39:17,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229937999] [2022-07-13 18:39:17,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:17,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:39:17,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:17,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:39:17,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:39:17,875 INFO L87 Difference]: Start difference. First operand 6108 states and 8999 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 18:39:18,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:18,618 INFO L93 Difference]: Finished difference Result 14561 states and 21424 transitions. [2022-07-13 18:39:18,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:39:18,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2022-07-13 18:39:18,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:18,657 INFO L225 Difference]: With dead ends: 14561 [2022-07-13 18:39:18,657 INFO L226 Difference]: Without dead ends: 8534 [2022-07-13 18:39:18,669 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 18:39:18,670 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 849 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:39:18,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 232 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:39:18,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8534 states. [2022-07-13 18:39:19,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8534 to 8486. [2022-07-13 18:39:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8486 states, 8485 states have (on average 1.4579846788450206) internal successors, (12371), 8485 states have internal predecessors, (12371), 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 18:39:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8486 states to 8486 states and 12371 transitions. [2022-07-13 18:39:19,493 INFO L78 Accepts]: Start accepts. Automaton has 8486 states and 12371 transitions. Word has length 58 [2022-07-13 18:39:19,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:19,493 INFO L495 AbstractCegarLoop]: Abstraction has 8486 states and 12371 transitions. [2022-07-13 18:39:19,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 18:39:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand 8486 states and 12371 transitions. [2022-07-13 18:39:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-13 18:39:19,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:19,498 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] [2022-07-13 18:39:19,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:39:19,498 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:19,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:19,499 INFO L85 PathProgramCache]: Analyzing trace with hash 536362735, now seen corresponding path program 1 times [2022-07-13 18:39:19,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:19,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105625388] [2022-07-13 18:39:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:19,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:19,557 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 18:39:19,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:19,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105625388] [2022-07-13 18:39:19,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105625388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:19,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:19,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:39:19,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6791083] [2022-07-13 18:39:19,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:19,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:39:19,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:19,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:39:19,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:39:19,561 INFO L87 Difference]: Start difference. First operand 8486 states and 12371 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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 18:39:21,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:21,972 INFO L93 Difference]: Finished difference Result 33048 states and 47772 transitions. [2022-07-13 18:39:21,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 18:39:21,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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 59 [2022-07-13 18:39:21,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:22,155 INFO L225 Difference]: With dead ends: 33048 [2022-07-13 18:39:22,155 INFO L226 Difference]: Without dead ends: 28718 [2022-07-13 18:39:22,172 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 18:39:22,178 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 2069 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:39:22,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2069 Valid, 349 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:39:22,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28718 states. [2022-07-13 18:39:23,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28718 to 8506. [2022-07-13 18:39:23,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8506 states, 8505 states have (on average 1.4573780129335685) internal successors, (12395), 8505 states have internal predecessors, (12395), 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 18:39:23,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8506 states to 8506 states and 12395 transitions. [2022-07-13 18:39:23,315 INFO L78 Accepts]: Start accepts. Automaton has 8506 states and 12395 transitions. Word has length 59 [2022-07-13 18:39:23,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:23,315 INFO L495 AbstractCegarLoop]: Abstraction has 8506 states and 12395 transitions. [2022-07-13 18:39:23,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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 18:39:23,316 INFO L276 IsEmpty]: Start isEmpty. Operand 8506 states and 12395 transitions. [2022-07-13 18:39:23,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-13 18:39:23,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:23,320 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] [2022-07-13 18:39:23,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:39:23,321 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:23,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:23,321 INFO L85 PathProgramCache]: Analyzing trace with hash -426804272, now seen corresponding path program 1 times [2022-07-13 18:39:23,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:23,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051627504] [2022-07-13 18:39:23,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:23,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:23,384 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 18:39:23,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:23,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051627504] [2022-07-13 18:39:23,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051627504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:23,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:23,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:39:23,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616436669] [2022-07-13 18:39:23,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:23,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:39:23,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:23,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:39:23,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:39:23,387 INFO L87 Difference]: Start difference. First operand 8506 states and 12395 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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 18:39:27,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:27,044 INFO L93 Difference]: Finished difference Result 39153 states and 56569 transitions. [2022-07-13 18:39:27,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 18:39:27,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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 59 [2022-07-13 18:39:27,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:27,156 INFO L225 Difference]: With dead ends: 39153 [2022-07-13 18:39:27,156 INFO L226 Difference]: Without dead ends: 34911 [2022-07-13 18:39:27,176 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 18:39:27,177 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 2359 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2359 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:39:27,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2359 Valid, 395 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:39:27,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34911 states. [2022-07-13 18:39:28,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34911 to 8616. [2022-07-13 18:39:28,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8616 states, 8615 states have (on average 1.4552524666279745) internal successors, (12537), 8615 states have internal predecessors, (12537), 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 18:39:28,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8616 states to 8616 states and 12537 transitions. [2022-07-13 18:39:28,122 INFO L78 Accepts]: Start accepts. Automaton has 8616 states and 12537 transitions. Word has length 59 [2022-07-13 18:39:28,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:28,122 INFO L495 AbstractCegarLoop]: Abstraction has 8616 states and 12537 transitions. [2022-07-13 18:39:28,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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 18:39:28,123 INFO L276 IsEmpty]: Start isEmpty. Operand 8616 states and 12537 transitions. [2022-07-13 18:39:28,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-13 18:39:28,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:28,127 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] [2022-07-13 18:39:28,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:39:28,128 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:28,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:28,128 INFO L85 PathProgramCache]: Analyzing trace with hash -974429839, now seen corresponding path program 1 times [2022-07-13 18:39:28,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:28,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943341447] [2022-07-13 18:39:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:28,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:28,203 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 18:39:28,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:28,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943341447] [2022-07-13 18:39:28,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943341447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:28,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:28,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:39:28,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936001551] [2022-07-13 18:39:28,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:28,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:39:28,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:28,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:39:28,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:39:28,206 INFO L87 Difference]: Start difference. First operand 8616 states and 12537 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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 18:39:33,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:33,263 INFO L93 Difference]: Finished difference Result 45194 states and 65263 transitions. [2022-07-13 18:39:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 18:39:33,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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 59 [2022-07-13 18:39:33,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:33,346 INFO L225 Difference]: With dead ends: 45194 [2022-07-13 18:39:33,346 INFO L226 Difference]: Without dead ends: 42096 [2022-07-13 18:39:33,368 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 18:39:33,368 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 2722 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:39:33,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2722 Valid, 412 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:39:33,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42096 states. [2022-07-13 18:39:34,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42096 to 8672. [2022-07-13 18:39:34,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8672 states, 8671 states have (on average 1.4538115557605813) internal successors, (12606), 8671 states have internal predecessors, (12606), 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 18:39:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 12606 transitions. [2022-07-13 18:39:34,795 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 12606 transitions. Word has length 59 [2022-07-13 18:39:34,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:34,796 INFO L495 AbstractCegarLoop]: Abstraction has 8672 states and 12606 transitions. [2022-07-13 18:39:34,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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 18:39:34,796 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 12606 transitions. [2022-07-13 18:39:34,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-13 18:39:34,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:34,802 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] [2022-07-13 18:39:34,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 18:39:34,802 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:34,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:34,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1695106365, now seen corresponding path program 1 times [2022-07-13 18:39:34,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:34,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3455043] [2022-07-13 18:39:34,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:34,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:35,019 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 18:39:35,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:35,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3455043] [2022-07-13 18:39:35,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3455043] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:35,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:35,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:39:35,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277198521] [2022-07-13 18:39:35,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:35,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:39:35,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:35,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:39:35,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:39:35,022 INFO L87 Difference]: Start difference. First operand 8672 states and 12606 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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 18:39:39,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:39,846 INFO L93 Difference]: Finished difference Result 33360 states and 48326 transitions. [2022-07-13 18:39:39,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 18:39:39,846 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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 61 [2022-07-13 18:39:39,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:39,908 INFO L225 Difference]: With dead ends: 33360 [2022-07-13 18:39:39,909 INFO L226 Difference]: Without dead ends: 26207 [2022-07-13 18:39:39,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-07-13 18:39:39,933 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 2061 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 18:39:39,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2061 Valid, 1575 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 18:39:39,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26207 states. [2022-07-13 18:39:41,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26207 to 8512. [2022-07-13 18:39:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8512 states, 8511 states have (on average 1.450945834802021) internal successors, (12349), 8511 states have internal predecessors, (12349), 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 18:39:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8512 states to 8512 states and 12349 transitions. [2022-07-13 18:39:41,340 INFO L78 Accepts]: Start accepts. Automaton has 8512 states and 12349 transitions. Word has length 61 [2022-07-13 18:39:41,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:41,340 INFO L495 AbstractCegarLoop]: Abstraction has 8512 states and 12349 transitions. [2022-07-13 18:39:41,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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 18:39:41,341 INFO L276 IsEmpty]: Start isEmpty. Operand 8512 states and 12349 transitions. [2022-07-13 18:39:41,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-13 18:39:41,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:41,345 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] [2022-07-13 18:39:41,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 18:39:41,345 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:41,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:41,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1748259780, now seen corresponding path program 1 times [2022-07-13 18:39:41,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:41,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689135503] [2022-07-13 18:39:41,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:41,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:41,492 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 18:39:41,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:41,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689135503] [2022-07-13 18:39:41,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689135503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:41,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:41,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:39:41,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342331530] [2022-07-13 18:39:41,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:41,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:39:41,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:41,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:39:41,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:39:41,495 INFO L87 Difference]: Start difference. First operand 8512 states and 12349 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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 18:39:45,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:45,939 INFO L93 Difference]: Finished difference Result 28682 states and 41264 transitions. [2022-07-13 18:39:45,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 18:39:45,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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 61 [2022-07-13 18:39:45,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:45,974 INFO L225 Difference]: With dead ends: 28682 [2022-07-13 18:39:45,975 INFO L226 Difference]: Without dead ends: 21400 [2022-07-13 18:39:45,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-07-13 18:39:45,990 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 1944 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 18:39:45,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1944 Valid, 1616 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 18:39:46,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21400 states. [2022-07-13 18:39:47,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21400 to 8231. [2022-07-13 18:39:47,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8231 states, 8230 states have (on average 1.4487241798298907) internal successors, (11923), 8230 states have internal predecessors, (11923), 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 18:39:47,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8231 states to 8231 states and 11923 transitions. [2022-07-13 18:39:47,371 INFO L78 Accepts]: Start accepts. Automaton has 8231 states and 11923 transitions. Word has length 61 [2022-07-13 18:39:47,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:47,371 INFO L495 AbstractCegarLoop]: Abstraction has 8231 states and 11923 transitions. [2022-07-13 18:39:47,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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 18:39:47,372 INFO L276 IsEmpty]: Start isEmpty. Operand 8231 states and 11923 transitions. [2022-07-13 18:39:47,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-13 18:39:47,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:47,376 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] [2022-07-13 18:39:47,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 18:39:47,377 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:47,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:47,377 INFO L85 PathProgramCache]: Analyzing trace with hash 11490693, now seen corresponding path program 1 times [2022-07-13 18:39:47,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:47,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931974077] [2022-07-13 18:39:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:47,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:47,527 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 18:39:47,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:47,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931974077] [2022-07-13 18:39:47,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931974077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:47,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:47,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:39:47,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673228471] [2022-07-13 18:39:47,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:47,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:39:47,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:47,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:39:47,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:39:47,530 INFO L87 Difference]: Start difference. First operand 8231 states and 11923 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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 18:39:52,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:52,569 INFO L93 Difference]: Finished difference Result 28808 states and 41691 transitions. [2022-07-13 18:39:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 18:39:52,570 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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 61 [2022-07-13 18:39:52,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:52,600 INFO L225 Difference]: With dead ends: 28808 [2022-07-13 18:39:52,600 INFO L226 Difference]: Without dead ends: 21732 [2022-07-13 18:39:52,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2022-07-13 18:39:52,610 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 2158 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:39:52,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2158 Valid, 1332 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 18:39:52,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21732 states. [2022-07-13 18:39:54,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21732 to 8082. [2022-07-13 18:39:54,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8082 states, 8081 states have (on average 1.4493255785175103) internal successors, (11712), 8081 states have internal predecessors, (11712), 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 18:39:54,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8082 states to 8082 states and 11712 transitions. [2022-07-13 18:39:54,114 INFO L78 Accepts]: Start accepts. Automaton has 8082 states and 11712 transitions. Word has length 61 [2022-07-13 18:39:54,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:54,115 INFO L495 AbstractCegarLoop]: Abstraction has 8082 states and 11712 transitions. [2022-07-13 18:39:54,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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 18:39:54,115 INFO L276 IsEmpty]: Start isEmpty. Operand 8082 states and 11712 transitions. [2022-07-13 18:39:54,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 18:39:54,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:54,118 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] [2022-07-13 18:39:54,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 18:39:54,119 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:54,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:54,119 INFO L85 PathProgramCache]: Analyzing trace with hash -746765663, now seen corresponding path program 1 times [2022-07-13 18:39:54,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:54,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791292916] [2022-07-13 18:39:54,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:54,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:54,147 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 18:39:54,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:54,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791292916] [2022-07-13 18:39:54,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791292916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:54,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:54,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:39:54,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985145801] [2022-07-13 18:39:54,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:54,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:39:54,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:54,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:39:54,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:39:54,150 INFO L87 Difference]: Start difference. First operand 8082 states and 11712 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 18:39:55,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:55,681 INFO L93 Difference]: Finished difference Result 11129 states and 16085 transitions. [2022-07-13 18:39:55,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:39:55,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-07-13 18:39:55,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:55,693 INFO L225 Difference]: With dead ends: 11129 [2022-07-13 18:39:55,693 INFO L226 Difference]: Without dead ends: 7899 [2022-07-13 18:39:55,698 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 18:39:55,698 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 152 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 528 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 18:39:55,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 528 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:39:55,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2022-07-13 18:39:57,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7897. [2022-07-13 18:39:57,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7897 states, 7896 states have (on average 1.4223657548125632) internal successors, (11231), 7896 states have internal predecessors, (11231), 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 18:39:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7897 states to 7897 states and 11231 transitions. [2022-07-13 18:39:57,108 INFO L78 Accepts]: Start accepts. Automaton has 7897 states and 11231 transitions. Word has length 62 [2022-07-13 18:39:57,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:57,108 INFO L495 AbstractCegarLoop]: Abstraction has 7897 states and 11231 transitions. [2022-07-13 18:39:57,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 18:39:57,109 INFO L276 IsEmpty]: Start isEmpty. Operand 7897 states and 11231 transitions. [2022-07-13 18:39:57,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 18:39:57,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:57,112 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] [2022-07-13 18:39:57,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 18:39:57,112 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:57,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:57,113 INFO L85 PathProgramCache]: Analyzing trace with hash -691619625, now seen corresponding path program 1 times [2022-07-13 18:39:57,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:57,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218718546] [2022-07-13 18:39:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:57,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:57,144 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 18:39:57,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:57,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218718546] [2022-07-13 18:39:57,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218718546] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:57,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:57,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:39:57,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366650847] [2022-07-13 18:39:57,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:57,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:39:57,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:57,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:39:57,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:39:57,147 INFO L87 Difference]: Start difference. First operand 7897 states and 11231 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 18:39:58,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:39:58,468 INFO L93 Difference]: Finished difference Result 11306 states and 16076 transitions. [2022-07-13 18:39:58,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:39:58,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-07-13 18:39:58,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:39:58,478 INFO L225 Difference]: With dead ends: 11306 [2022-07-13 18:39:58,479 INFO L226 Difference]: Without dead ends: 7025 [2022-07-13 18:39:58,486 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 18:39:58,487 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 138 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:39:58,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 520 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:39:58,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7025 states. [2022-07-13 18:39:59,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7025 to 7023. [2022-07-13 18:39:59,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7023 states, 7022 states have (on average 1.400598120193677) internal successors, (9835), 7022 states have internal predecessors, (9835), 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 18:39:59,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9835 transitions. [2022-07-13 18:39:59,769 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9835 transitions. Word has length 62 [2022-07-13 18:39:59,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:39:59,769 INFO L495 AbstractCegarLoop]: Abstraction has 7023 states and 9835 transitions. [2022-07-13 18:39:59,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 18:39:59,769 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9835 transitions. [2022-07-13 18:39:59,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 18:39:59,772 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:39:59,772 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] [2022-07-13 18:39:59,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 18:39:59,773 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:39:59,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:39:59,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1051063940, now seen corresponding path program 1 times [2022-07-13 18:39:59,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:39:59,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226898244] [2022-07-13 18:39:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:39:59,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:39:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:39:59,800 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 18:39:59,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:39:59,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226898244] [2022-07-13 18:39:59,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226898244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:39:59,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:39:59,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:39:59,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655113293] [2022-07-13 18:39:59,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:39:59,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:39:59,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:39:59,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:39:59,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:39:59,803 INFO L87 Difference]: Start difference. First operand 7023 states and 9835 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 18:40:00,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:40:00,837 INFO L93 Difference]: Finished difference Result 9402 states and 13165 transitions. [2022-07-13 18:40:00,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:40:00,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-07-13 18:40:00,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:40:00,846 INFO L225 Difference]: With dead ends: 9402 [2022-07-13 18:40:00,846 INFO L226 Difference]: Without dead ends: 5420 [2022-07-13 18:40:00,852 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 18:40:00,853 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 150 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:40:00,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 531 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:40:00,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5420 states. [2022-07-13 18:40:01,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5420 to 5418. [2022-07-13 18:40:01,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5417 states have (on average 1.3782536459294812) internal successors, (7466), 5417 states have internal predecessors, (7466), 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 18:40:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 7466 transitions. [2022-07-13 18:40:01,788 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 7466 transitions. Word has length 62 [2022-07-13 18:40:01,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:40:01,789 INFO L495 AbstractCegarLoop]: Abstraction has 5418 states and 7466 transitions. [2022-07-13 18:40:01,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 18:40:01,789 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 7466 transitions. [2022-07-13 18:40:01,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 18:40:01,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:40:01,792 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] [2022-07-13 18:40:01,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 18:40:01,793 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:40:01,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:40:01,793 INFO L85 PathProgramCache]: Analyzing trace with hash -751537894, now seen corresponding path program 1 times [2022-07-13 18:40:01,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:40:01,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33236030] [2022-07-13 18:40:01,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:40:01,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:40:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:40:01,827 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 18:40:01,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:40:01,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33236030] [2022-07-13 18:40:01,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33236030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:40:01,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:40:01,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:40:01,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877981732] [2022-07-13 18:40:01,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:40:01,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:40:01,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:40:01,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:40:01,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:40:01,829 INFO L87 Difference]: Start difference. First operand 5418 states and 7466 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 18:40:03,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:40:03,171 INFO L93 Difference]: Finished difference Result 10107 states and 14003 transitions. [2022-07-13 18:40:03,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:40:03,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-07-13 18:40:03,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:40:03,180 INFO L225 Difference]: With dead ends: 10107 [2022-07-13 18:40:03,180 INFO L226 Difference]: Without dead ends: 7374 [2022-07-13 18:40:03,184 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 18:40:03,185 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 175 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:40:03,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 350 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:40:03,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7374 states. [2022-07-13 18:40:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7374 to 5197. [2022-07-13 18:40:04,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 1.3775981524249423) internal successors, (7158), 5196 states have internal predecessors, (7158), 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 18:40:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7158 transitions. [2022-07-13 18:40:04,098 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7158 transitions. Word has length 63 [2022-07-13 18:40:04,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:40:04,098 INFO L495 AbstractCegarLoop]: Abstraction has 5197 states and 7158 transitions. [2022-07-13 18:40:04,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 18:40:04,098 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7158 transitions. [2022-07-13 18:40:04,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 18:40:04,100 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:40:04,101 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] [2022-07-13 18:40:04,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 18:40:04,101 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:40:04,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:40:04,102 INFO L85 PathProgramCache]: Analyzing trace with hash 296287221, now seen corresponding path program 1 times [2022-07-13 18:40:04,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:40:04,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844817479] [2022-07-13 18:40:04,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:40:04,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:40:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:40:04,718 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 18:40:04,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:40:04,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844817479] [2022-07-13 18:40:04,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844817479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:40:04,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:40:04,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-13 18:40:04,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884723192] [2022-07-13 18:40:04,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:40:04,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 18:40:04,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:40:04,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 18:40:04,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-07-13 18:40:04,720 INFO L87 Difference]: Start difference. First operand 5197 states and 7158 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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 18:40:10,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:40:10,149 INFO L93 Difference]: Finished difference Result 10147 states and 14063 transitions. [2022-07-13 18:40:10,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 18:40:10,150 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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 63 [2022-07-13 18:40:10,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:40:10,160 INFO L225 Difference]: With dead ends: 10147 [2022-07-13 18:40:10,161 INFO L226 Difference]: Without dead ends: 10032 [2022-07-13 18:40:10,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=393, Invalid=1863, Unknown=0, NotChecked=0, Total=2256 [2022-07-13 18:40:10,163 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 2690 mSDsluCounter, 5736 mSDsCounter, 0 mSdLazyCounter, 3340 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 6182 SdHoareTripleChecker+Invalid, 3385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 18:40:10,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2690 Valid, 6182 Invalid, 3385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3340 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 18:40:10,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10032 states. [2022-07-13 18:40:11,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10032 to 5197. [2022-07-13 18:40:11,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 1.3774056966897614) internal successors, (7157), 5196 states have internal predecessors, (7157), 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 18:40:11,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7157 transitions. [2022-07-13 18:40:11,143 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7157 transitions. Word has length 63 [2022-07-13 18:40:11,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:40:11,143 INFO L495 AbstractCegarLoop]: Abstraction has 5197 states and 7157 transitions. [2022-07-13 18:40:11,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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 18:40:11,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7157 transitions. [2022-07-13 18:40:11,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 18:40:11,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:40:11,145 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] [2022-07-13 18:40:11,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 18:40:11,146 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:40:11,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:40:11,146 INFO L85 PathProgramCache]: Analyzing trace with hash -678356547, now seen corresponding path program 1 times [2022-07-13 18:40:11,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:40:11,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850643410] [2022-07-13 18:40:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:40:11,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:40:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:40:11,684 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 18:40:11,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:40:11,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850643410] [2022-07-13 18:40:11,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850643410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:40:11,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:40:11,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-13 18:40:11,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094266454] [2022-07-13 18:40:11,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:40:11,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 18:40:11,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:40:11,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 18:40:11,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2022-07-13 18:40:11,687 INFO L87 Difference]: Start difference. First operand 5197 states and 7157 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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 18:40:17,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:40:17,135 INFO L93 Difference]: Finished difference Result 9021 states and 12491 transitions. [2022-07-13 18:40:17,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 18:40:17,136 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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 63 [2022-07-13 18:40:17,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:40:17,148 INFO L225 Difference]: With dead ends: 9021 [2022-07-13 18:40:17,148 INFO L226 Difference]: Without dead ends: 8906 [2022-07-13 18:40:17,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=440, Invalid=1816, Unknown=0, NotChecked=0, Total=2256 [2022-07-13 18:40:17,151 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 1705 mSDsluCounter, 6524 mSDsCounter, 0 mSdLazyCounter, 3885 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 6966 SdHoareTripleChecker+Invalid, 3910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 18:40:17,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 6966 Invalid, 3910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3885 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 18:40:17,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8906 states. [2022-07-13 18:40:18,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8906 to 5197. [2022-07-13 18:40:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 1.3772132409545805) internal successors, (7156), 5196 states have internal predecessors, (7156), 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 18:40:18,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7156 transitions. [2022-07-13 18:40:18,186 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7156 transitions. Word has length 63 [2022-07-13 18:40:18,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:40:18,186 INFO L495 AbstractCegarLoop]: Abstraction has 5197 states and 7156 transitions. [2022-07-13 18:40:18,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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 18:40:18,186 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7156 transitions. [2022-07-13 18:40:18,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 18:40:18,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:40:18,188 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] [2022-07-13 18:40:18,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 18:40:18,189 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:40:18,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:40:18,189 INFO L85 PathProgramCache]: Analyzing trace with hash 639398585, now seen corresponding path program 1 times [2022-07-13 18:40:18,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:40:18,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212868327] [2022-07-13 18:40:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:40:18,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:40:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:40:18,749 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 18:40:18,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:40:18,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212868327] [2022-07-13 18:40:18,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212868327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:40:18,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:40:18,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-13 18:40:18,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292427630] [2022-07-13 18:40:18,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:40:18,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 18:40:18,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:40:18,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 18:40:18,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-07-13 18:40:18,752 INFO L87 Difference]: Start difference. First operand 5197 states and 7156 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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 18:40:23,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:40:23,738 INFO L93 Difference]: Finished difference Result 8720 states and 12045 transitions. [2022-07-13 18:40:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 18:40:23,739 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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 63 [2022-07-13 18:40:23,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:40:23,749 INFO L225 Difference]: With dead ends: 8720 [2022-07-13 18:40:23,749 INFO L226 Difference]: Without dead ends: 8605 [2022-07-13 18:40:23,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=353, Invalid=1539, Unknown=0, NotChecked=0, Total=1892 [2022-07-13 18:40:23,751 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 2217 mSDsluCounter, 7324 mSDsCounter, 0 mSdLazyCounter, 4353 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 7834 SdHoareTripleChecker+Invalid, 4396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:40:23,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2217 Valid, 7834 Invalid, 4396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4353 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 18:40:23,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8605 states. [2022-07-13 18:40:24,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8605 to 5203. [2022-07-13 18:40:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 1.3769703960015378) internal successors, (7163), 5202 states have internal predecessors, (7163), 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 18:40:24,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 7163 transitions. [2022-07-13 18:40:24,825 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 7163 transitions. Word has length 63 [2022-07-13 18:40:24,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:40:24,825 INFO L495 AbstractCegarLoop]: Abstraction has 5203 states and 7163 transitions. [2022-07-13 18:40:24,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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 18:40:24,825 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 7163 transitions. [2022-07-13 18:40:24,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 18:40:24,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:40:24,827 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] [2022-07-13 18:40:24,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 18:40:24,827 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:40:24,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:40:24,828 INFO L85 PathProgramCache]: Analyzing trace with hash -422382988, now seen corresponding path program 1 times [2022-07-13 18:40:24,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:40:24,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133595405] [2022-07-13 18:40:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:40:24,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:40:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:40:24,853 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 18:40:24,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:40:24,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133595405] [2022-07-13 18:40:24,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133595405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:40:24,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:40:24,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:40:24,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338880768] [2022-07-13 18:40:24,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:40:24,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:40:24,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:40:24,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:40:24,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:40:24,855 INFO L87 Difference]: Start difference. First operand 5203 states and 7163 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 18:40:26,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:40:26,315 INFO L93 Difference]: Finished difference Result 9670 states and 13392 transitions. [2022-07-13 18:40:26,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:40:26,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-07-13 18:40:26,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:40:26,329 INFO L225 Difference]: With dead ends: 9670 [2022-07-13 18:40:26,329 INFO L226 Difference]: Without dead ends: 7060 [2022-07-13 18:40:26,332 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 18:40:26,333 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 177 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:40:26,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 351 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:40:26,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7060 states. [2022-07-13 18:40:27,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7060 to 4934. [2022-07-13 18:40:27,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4934 states, 4933 states have (on average 1.3768497871477803) internal successors, (6792), 4933 states have internal predecessors, (6792), 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 18:40:27,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4934 states to 4934 states and 6792 transitions. [2022-07-13 18:40:27,350 INFO L78 Accepts]: Start accepts. Automaton has 4934 states and 6792 transitions. Word has length 63 [2022-07-13 18:40:27,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:40:27,350 INFO L495 AbstractCegarLoop]: Abstraction has 4934 states and 6792 transitions. [2022-07-13 18:40:27,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 18:40:27,350 INFO L276 IsEmpty]: Start isEmpty. Operand 4934 states and 6792 transitions. [2022-07-13 18:40:27,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 18:40:27,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:40:27,353 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] [2022-07-13 18:40:27,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 18:40:27,353 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:40:27,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:40:27,353 INFO L85 PathProgramCache]: Analyzing trace with hash 393964366, now seen corresponding path program 1 times [2022-07-13 18:40:27,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:40:27,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230319560] [2022-07-13 18:40:27,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:40:27,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:40:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:40:27,372 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 18:40:27,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:40:27,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230319560] [2022-07-13 18:40:27,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230319560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:40:27,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:40:27,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:40:27,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758649731] [2022-07-13 18:40:27,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:40:27,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:40:27,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:40:27,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:40:27,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:40:27,375 INFO L87 Difference]: Start difference. First operand 4934 states and 6792 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 18:40:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:40:28,601 INFO L93 Difference]: Finished difference Result 7477 states and 10307 transitions. [2022-07-13 18:40:28,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:40:28,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-07-13 18:40:28,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:40:28,607 INFO L225 Difference]: With dead ends: 7477 [2022-07-13 18:40:28,607 INFO L226 Difference]: Without dead ends: 5683 [2022-07-13 18:40:28,609 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 18:40:28,609 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 165 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:40:28,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 327 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:40:28,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5683 states. [2022-07-13 18:40:29,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5683 to 4717. [2022-07-13 18:40:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4717 states, 4716 states have (on average 1.3770144189991518) internal successors, (6494), 4716 states have internal predecessors, (6494), 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 18:40:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4717 states to 4717 states and 6494 transitions. [2022-07-13 18:40:29,546 INFO L78 Accepts]: Start accepts. Automaton has 4717 states and 6494 transitions. Word has length 63 [2022-07-13 18:40:29,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:40:29,546 INFO L495 AbstractCegarLoop]: Abstraction has 4717 states and 6494 transitions. [2022-07-13 18:40:29,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 18:40:29,546 INFO L276 IsEmpty]: Start isEmpty. Operand 4717 states and 6494 transitions. [2022-07-13 18:40:29,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 18:40:29,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:40:29,548 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] [2022-07-13 18:40:29,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 18:40:29,548 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:40:29,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:40:29,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1222962444, now seen corresponding path program 1 times [2022-07-13 18:40:29,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:40:29,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374576892] [2022-07-13 18:40:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:40:29,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:40:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:40:29,821 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 18:40:29,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:40:29,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374576892] [2022-07-13 18:40:29,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374576892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:40:29,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:40:29,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 18:40:29,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537354555] [2022-07-13 18:40:29,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:40:29,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 18:40:29,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:40:29,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 18:40:29,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:40:29,823 INFO L87 Difference]: Start difference. First operand 4717 states and 6494 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 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 18:40:33,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:40:33,038 INFO L93 Difference]: Finished difference Result 9198 states and 12735 transitions. [2022-07-13 18:40:33,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 18:40:33,039 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 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 64 [2022-07-13 18:40:33,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:40:33,048 INFO L225 Difference]: With dead ends: 9198 [2022-07-13 18:40:33,049 INFO L226 Difference]: Without dead ends: 8524 [2022-07-13 18:40:33,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-07-13 18:40:33,051 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 1687 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:40:33,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 2581 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:40:33,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8524 states. [2022-07-13 18:40:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8524 to 4600. [2022-07-13 18:40:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4600 states, 4599 states have (on average 1.3772559252011307) internal successors, (6334), 4599 states have internal predecessors, (6334), 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 18:40:34,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4600 states to 4600 states and 6334 transitions. [2022-07-13 18:40:34,160 INFO L78 Accepts]: Start accepts. Automaton has 4600 states and 6334 transitions. Word has length 64 [2022-07-13 18:40:34,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:40:34,160 INFO L495 AbstractCegarLoop]: Abstraction has 4600 states and 6334 transitions. [2022-07-13 18:40:34,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 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 18:40:34,160 INFO L276 IsEmpty]: Start isEmpty. Operand 4600 states and 6334 transitions. [2022-07-13 18:40:34,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 18:40:34,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:40:34,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:40:34,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 18:40:34,162 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:40:34,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:40:34,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1481127882, now seen corresponding path program 1 times [2022-07-13 18:40:34,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:40:34,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899281470] [2022-07-13 18:40:34,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:40:34,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:40:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:40:34,522 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 18:40:34,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:40:34,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899281470] [2022-07-13 18:40:34,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899281470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:40:34,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:40:34,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-13 18:40:34,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218127726] [2022-07-13 18:40:34,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:40:34,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 18:40:34,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:40:34,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 18:40:34,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:40:34,523 INFO L87 Difference]: Start difference. First operand 4600 states and 6334 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 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 18:40:39,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:40:39,768 INFO L93 Difference]: Finished difference Result 11022 states and 15289 transitions. [2022-07-13 18:40:39,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-13 18:40:39,768 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 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 64 [2022-07-13 18:40:39,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:40:39,779 INFO L225 Difference]: With dead ends: 11022 [2022-07-13 18:40:39,779 INFO L226 Difference]: Without dead ends: 10585 [2022-07-13 18:40:39,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=378, Invalid=1344, Unknown=0, NotChecked=0, Total=1722 [2022-07-13 18:40:39,781 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 2060 mSDsluCounter, 5371 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2060 SdHoareTripleChecker+Valid, 6068 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:40:39,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2060 Valid, 6068 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 18:40:39,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10585 states. [2022-07-13 18:40:41,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10585 to 4521. [2022-07-13 18:40:41,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4521 states, 4520 states have (on average 1.3769911504424779) internal successors, (6224), 4520 states have internal predecessors, (6224), 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 18:40:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 6224 transitions. [2022-07-13 18:40:41,052 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 6224 transitions. Word has length 64 [2022-07-13 18:40:41,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:40:41,053 INFO L495 AbstractCegarLoop]: Abstraction has 4521 states and 6224 transitions. [2022-07-13 18:40:41,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 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 18:40:41,053 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 6224 transitions. [2022-07-13 18:40:41,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 18:40:41,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:40:41,055 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 18:40:41,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 18:40:41,055 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:40:41,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:40:41,056 INFO L85 PathProgramCache]: Analyzing trace with hash 880460014, now seen corresponding path program 1 times [2022-07-13 18:40:41,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:40:41,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154412849] [2022-07-13 18:40:41,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:40:41,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:40:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:40:41,099 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 18:40:41,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:40:41,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154412849] [2022-07-13 18:40:41,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154412849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:40:41,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:40:41,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:40:41,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407187644] [2022-07-13 18:40:41,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:40:41,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:40:41,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:40:41,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:40:41,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:40:41,101 INFO L87 Difference]: Start difference. First operand 4521 states and 6224 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 18:40:42,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:40:42,331 INFO L93 Difference]: Finished difference Result 4527 states and 6227 transitions. [2022-07-13 18:40:42,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:40:42,331 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 18:40:42,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:40:42,336 INFO L225 Difference]: With dead ends: 4527 [2022-07-13 18:40:42,336 INFO L226 Difference]: Without dead ends: 4084 [2022-07-13 18:40:42,337 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 18:40:42,338 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 485 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:40:42,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 623 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:40:42,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2022-07-13 18:40:43,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 4080. [2022-07-13 18:40:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4080 states, 4079 states have (on average 1.380485413091444) internal successors, (5631), 4079 states have internal predecessors, (5631), 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 18:40:43,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4080 states to 4080 states and 5631 transitions. [2022-07-13 18:40:43,529 INFO L78 Accepts]: Start accepts. Automaton has 4080 states and 5631 transitions. Word has length 67 [2022-07-13 18:40:43,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:40:43,529 INFO L495 AbstractCegarLoop]: Abstraction has 4080 states and 5631 transitions. [2022-07-13 18:40:43,529 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 18:40:43,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4080 states and 5631 transitions. [2022-07-13 18:40:43,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-13 18:40:43,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:40:43,532 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 18:40:43,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 18:40:43,533 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:40:43,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:40:43,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1617522588, now seen corresponding path program 1 times [2022-07-13 18:40:43,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:40:43,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34159375] [2022-07-13 18:40:43,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:40:43,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:40:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:40:43,571 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 18:40:43,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:40:43,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34159375] [2022-07-13 18:40:43,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34159375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:40:43,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:40:43,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:40:43,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325613126] [2022-07-13 18:40:43,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:40:43,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:40:43,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:40:43,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:40:43,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:40:43,574 INFO L87 Difference]: Start difference. First operand 4080 states and 5631 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 18:40:45,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:40:45,948 INFO L93 Difference]: Finished difference Result 10754 states and 14967 transitions. [2022-07-13 18:40:45,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:40:45,948 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 18:40:45,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:40:45,956 INFO L225 Difference]: With dead ends: 10754 [2022-07-13 18:40:45,957 INFO L226 Difference]: Without dead ends: 7262 [2022-07-13 18:40:45,959 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 18:40:45,959 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 119 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:40:45,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 434 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:40:45,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7262 states. [2022-07-13 18:40:47,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7262 to 6808. [2022-07-13 18:40:47,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6808 states, 6807 states have (on average 1.3844571764360218) internal successors, (9424), 6807 states have internal predecessors, (9424), 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 18:40:47,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6808 states to 6808 states and 9424 transitions. [2022-07-13 18:40:47,987 INFO L78 Accepts]: Start accepts. Automaton has 6808 states and 9424 transitions. Word has length 70 [2022-07-13 18:40:47,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:40:47,988 INFO L495 AbstractCegarLoop]: Abstraction has 6808 states and 9424 transitions. [2022-07-13 18:40:47,988 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 18:40:47,988 INFO L276 IsEmpty]: Start isEmpty. Operand 6808 states and 9424 transitions. [2022-07-13 18:40:47,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-13 18:40:47,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:40:47,989 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] [2022-07-13 18:40:47,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 18:40:47,990 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:40:47,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:40:47,990 INFO L85 PathProgramCache]: Analyzing trace with hash 121806462, now seen corresponding path program 1 times [2022-07-13 18:40:47,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:40:47,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606268871] [2022-07-13 18:40:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:40:47,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:40:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:40:48,022 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 18:40:48,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:40:48,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606268871] [2022-07-13 18:40:48,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606268871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:40:48,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:40:48,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:40:48,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017297081] [2022-07-13 18:40:48,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:40:48,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:40:48,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:40:48,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:40:48,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:40:48,025 INFO L87 Difference]: Start difference. First operand 6808 states and 9424 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:40:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:40:51,913 INFO L93 Difference]: Finished difference Result 18628 states and 25870 transitions. [2022-07-13 18:40:51,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:40:51,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-07-13 18:40:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:40:51,928 INFO L225 Difference]: With dead ends: 18628 [2022-07-13 18:40:51,928 INFO L226 Difference]: Without dead ends: 12408 [2022-07-13 18:40:51,935 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 18:40:51,935 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 109 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:40:51,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 424 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:40:51,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12408 states. [2022-07-13 18:40:55,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12408 to 11502. [2022-07-13 18:40:55,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11502 states, 11501 states have (on average 1.382314581340753) internal successors, (15898), 11501 states have internal predecessors, (15898), 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 18:40:55,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11502 states to 11502 states and 15898 transitions. [2022-07-13 18:40:55,540 INFO L78 Accepts]: Start accepts. Automaton has 11502 states and 15898 transitions. Word has length 71 [2022-07-13 18:40:55,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:40:55,541 INFO L495 AbstractCegarLoop]: Abstraction has 11502 states and 15898 transitions. [2022-07-13 18:40:55,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:40:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 11502 states and 15898 transitions. [2022-07-13 18:40:55,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-13 18:40:55,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:40:55,542 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 18:40:55,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 18:40:55,543 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:40:55,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:40:55,543 INFO L85 PathProgramCache]: Analyzing trace with hash -577663364, now seen corresponding path program 1 times [2022-07-13 18:40:55,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:40:55,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229916290] [2022-07-13 18:40:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:40:55,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:40:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:40:55,584 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 18:40:55,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:40:55,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229916290] [2022-07-13 18:40:55,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229916290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:40:55,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:40:55,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:40:55,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136924441] [2022-07-13 18:40:55,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:40:55,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:40:55,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:40:55,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:40:55,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:40:55,587 INFO L87 Difference]: Start difference. First operand 11502 states and 15898 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 18:41:02,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:41:02,187 INFO L93 Difference]: Finished difference Result 31274 states and 43068 transitions. [2022-07-13 18:41:02,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:41:02,188 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 18:41:02,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:41:02,212 INFO L225 Difference]: With dead ends: 31274 [2022-07-13 18:41:02,212 INFO L226 Difference]: Without dead ends: 20244 [2022-07-13 18:41:02,220 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 18:41:02,221 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 113 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:41:02,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 425 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:41:02,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20244 states. [2022-07-13 18:41:08,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20244 to 18370. [2022-07-13 18:41:08,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18370 states, 18369 states have (on average 1.3615874571288584) internal successors, (25011), 18369 states have internal predecessors, (25011), 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 18:41:08,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18370 states to 18370 states and 25011 transitions. [2022-07-13 18:41:08,148 INFO L78 Accepts]: Start accepts. Automaton has 18370 states and 25011 transitions. Word has length 73 [2022-07-13 18:41:08,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:41:08,148 INFO L495 AbstractCegarLoop]: Abstraction has 18370 states and 25011 transitions. [2022-07-13 18:41:08,148 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 18:41:08,148 INFO L276 IsEmpty]: Start isEmpty. Operand 18370 states and 25011 transitions. [2022-07-13 18:41:08,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-13 18:41:08,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:41:08,150 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 18:41:08,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 18:41:08,150 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:41:08,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:41:08,151 INFO L85 PathProgramCache]: Analyzing trace with hash -686006937, now seen corresponding path program 1 times [2022-07-13 18:41:08,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:41:08,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409617750] [2022-07-13 18:41:08,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:41:08,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:41:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:41:08,196 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 18:41:08,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:41:08,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409617750] [2022-07-13 18:41:08,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409617750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:41:08,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:41:08,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:41:08,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637601122] [2022-07-13 18:41:08,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:41:08,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:41:08,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:41:08,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:41:08,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:41:08,198 INFO L87 Difference]: Start difference. First operand 18370 states and 25011 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 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 18:41:22,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:41:22,500 INFO L93 Difference]: Finished difference Result 39464 states and 52793 transitions. [2022-07-13 18:41:22,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:41:22,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 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 18:41:22,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:41:22,555 INFO L225 Difference]: With dead ends: 39464 [2022-07-13 18:41:22,556 INFO L226 Difference]: Without dead ends: 39462 [2022-07-13 18:41:22,565 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 18:41:22,566 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 332 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:41:22,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 987 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:41:22,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39462 states. [2022-07-13 18:41:30,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39462 to 20338. [2022-07-13 18:41:30,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20338 states, 20337 states have (on average 1.3265968431922113) internal successors, (26979), 20337 states have internal predecessors, (26979), 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 18:41:30,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20338 states to 20338 states and 26979 transitions. [2022-07-13 18:41:30,079 INFO L78 Accepts]: Start accepts. Automaton has 20338 states and 26979 transitions. Word has length 74 [2022-07-13 18:41:30,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:41:30,080 INFO L495 AbstractCegarLoop]: Abstraction has 20338 states and 26979 transitions. [2022-07-13 18:41:30,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 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 18:41:30,080 INFO L276 IsEmpty]: Start isEmpty. Operand 20338 states and 26979 transitions. [2022-07-13 18:41:30,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 18:41:30,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:41:30,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:41:30,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 18:41:30,082 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:41:30,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:41:30,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1483002414, now seen corresponding path program 1 times [2022-07-13 18:41:30,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:41:30,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802024743] [2022-07-13 18:41:30,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:41:30,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:41:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:41:30,109 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 18:41:30,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:41:30,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802024743] [2022-07-13 18:41:30,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802024743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:41:30,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:41:30,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:41:30,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613685648] [2022-07-13 18:41:30,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:41:30,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:41:30,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:41:30,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:41:30,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:41:30,112 INFO L87 Difference]: Start difference. First operand 20338 states and 26979 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 18:41:41,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:41:41,140 INFO L93 Difference]: Finished difference Result 50174 states and 66365 transitions. [2022-07-13 18:41:41,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:41:41,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2022-07-13 18:41:41,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:41:41,189 INFO L225 Difference]: With dead ends: 50174 [2022-07-13 18:41:41,189 INFO L226 Difference]: Without dead ends: 30308 [2022-07-13 18:41:41,208 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 18:41:41,209 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 130 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:41:41,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 316 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:41:41,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30308 states. [2022-07-13 18:41:52,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30308 to 29978. [2022-07-13 18:41:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29978 states, 29977 states have (on average 1.2988291023117724) internal successors, (38935), 29977 states have internal predecessors, (38935), 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 18:41:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29978 states to 29978 states and 38935 transitions. [2022-07-13 18:41:52,472 INFO L78 Accepts]: Start accepts. Automaton has 29978 states and 38935 transitions. Word has length 75 [2022-07-13 18:41:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:41:52,473 INFO L495 AbstractCegarLoop]: Abstraction has 29978 states and 38935 transitions. [2022-07-13 18:41:52,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 18:41:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand 29978 states and 38935 transitions. [2022-07-13 18:41:52,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-13 18:41:52,479 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:41:52,479 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, 1] [2022-07-13 18:41:52,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 18:41:52,480 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:41:52,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:41:52,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1263057428, now seen corresponding path program 1 times [2022-07-13 18:41:52,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:41:52,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853964576] [2022-07-13 18:41:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:41:52,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:41:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:41:52,626 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 18:41:52,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:41:52,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853964576] [2022-07-13 18:41:52,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853964576] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:41:52,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881082985] [2022-07-13 18:41:52,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:41:52,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:41:52,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:41:52,628 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 18:41:52,629 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 18:41:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:41:52,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 18:41:52,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:41:54,065 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 18:41:54,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:41:55,244 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 18:41:55,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881082985] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:41:55,245 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:41:55,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2022-07-13 18:41:55,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956088862] [2022-07-13 18:41:55,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:41:55,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-13 18:41:55,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:41:55,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-13 18:41:55,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2022-07-13 18:41:55,247 INFO L87 Difference]: Start difference. First operand 29978 states and 38935 transitions. Second operand has 33 states, 33 states have (on average 7.515151515151516) internal successors, (248), 32 states have internal predecessors, (248), 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)