./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.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/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.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 b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:18:35,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:18:35,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:18:35,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:18:35,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:18:35,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:18:35,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:18:35,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:18:35,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:18:35,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:18:35,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:18:35,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:18:35,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:18:35,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:18:35,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:18:35,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:18:35,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:18:35,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:18:35,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:18:35,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:18:35,196 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:18:35,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:18:35,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:18:35,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:18:35,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:18:35,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:18:35,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:18:35,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:18:35,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:18:35,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:18:35,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:18:35,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:18:35,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:18:35,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:18:35,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:18:35,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:18:35,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:18:35,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:18:35,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:18:35,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:18:35,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:18:35,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:18:35,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:18:35,246 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:18:35,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:18:35,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:18:35,247 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:18:35,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:18:35,248 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:18:35,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:18:35,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:18:35,249 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:18:35,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:18:35,250 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:18:35,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:18:35,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:18:35,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:18:35,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:18:35,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:18:35,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:18:35,252 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:18:35,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:18:35,252 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:18:35,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:18:35,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:18:35,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:18:35,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:18:35,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:18:35,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:18:35,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:18:35,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:18:35,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:18:35,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:18:35,254 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:18:35,254 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:18:35,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:18:35,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 [2022-07-13 18:18:35,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:18:35,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:18:35,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:18:35,612 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:18:35,613 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:18:35,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2022-07-13 18:18:35,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcf334090/784dd316a4544a4489124dc8a48d0d90/FLAG481279014 [2022-07-13 18:18:36,522 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:18:36,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2022-07-13 18:18:36,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcf334090/784dd316a4544a4489124dc8a48d0d90/FLAG481279014 [2022-07-13 18:18:36,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcf334090/784dd316a4544a4489124dc8a48d0d90 [2022-07-13 18:18:36,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:18:36,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:18:36,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:18:36,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:18:36,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:18:36,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:18:36" (1/1) ... [2022-07-13 18:18:36,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1600ae4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:36, skipping insertion in model container [2022-07-13 18:18:36,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:18:36" (1/1) ... [2022-07-13 18:18:36,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:18:36,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:18:37,272 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/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2022-07-13 18:18:37,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:18:37,309 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:18:37,426 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/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2022-07-13 18:18:37,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:18:37,455 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:18:37,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:37 WrapperNode [2022-07-13 18:18:37,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:18:37,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:18:37,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:18:37,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:18:37,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:37" (1/1) ... [2022-07-13 18:18:37,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:37" (1/1) ... [2022-07-13 18:18:37,533 INFO L137 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 539 [2022-07-13 18:18:37,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:18:37,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:18:37,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:18:37,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:18:37,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:37" (1/1) ... [2022-07-13 18:18:37,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:37" (1/1) ... [2022-07-13 18:18:37,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:37" (1/1) ... [2022-07-13 18:18:37,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:37" (1/1) ... [2022-07-13 18:18:37,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:37" (1/1) ... [2022-07-13 18:18:37,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:37" (1/1) ... [2022-07-13 18:18:37,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:37" (1/1) ... [2022-07-13 18:18:37,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:18:37,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:18:37,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:18:37,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:18:37,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:37" (1/1) ... [2022-07-13 18:18:37,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:18:37,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:18:37,729 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 18:18:37,777 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 18:18:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2022-07-13 18:18:37,816 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2022-07-13 18:18:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:18:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2022-07-13 18:18:37,817 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2022-07-13 18:18:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-13 18:18:37,817 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-13 18:18:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 18:18:37,828 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 18:18:37,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:18:37,829 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2022-07-13 18:18:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2022-07-13 18:18:37,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:18:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:18:37,829 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2022-07-13 18:18:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2022-07-13 18:18:37,990 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:18:38,005 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:18:38,719 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:18:38,734 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:18:38,741 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 18:18:38,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:18:38 BoogieIcfgContainer [2022-07-13 18:18:38,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:18:38,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:18:38,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:18:38,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:18:38,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:18:36" (1/3) ... [2022-07-13 18:18:38,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c35a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:18:38, skipping insertion in model container [2022-07-13 18:18:38,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:37" (2/3) ... [2022-07-13 18:18:38,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c35a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:18:38, skipping insertion in model container [2022-07-13 18:18:38,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:18:38" (3/3) ... [2022-07-13 18:18:38,789 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2022-07-13 18:18:38,805 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:18:38,805 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:18:38,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:18:38,894 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@2128c2ad, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2ce19366 [2022-07-13 18:18:38,894 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:18:38,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 200 states, 163 states have (on average 1.5582822085889572) internal successors, (254), 164 states have internal predecessors, (254), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-13 18:18:38,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 18:18:38,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:38,928 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] [2022-07-13 18:18:38,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:38,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:38,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1020756392, now seen corresponding path program 1 times [2022-07-13 18:18:38,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:38,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203696541] [2022-07-13 18:18:38,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:38,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:39,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:18:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:39,223 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 18:18:39,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:39,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203696541] [2022-07-13 18:18:39,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203696541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:39,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:39,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 18:18:39,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113502403] [2022-07-13 18:18:39,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:39,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 18:18:39,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:39,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 18:18:39,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 18:18:39,266 INFO L87 Difference]: Start difference. First operand has 200 states, 163 states have (on average 1.5582822085889572) internal successors, (254), 164 states have internal predecessors, (254), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 18:18:39,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:39,352 INFO L93 Difference]: Finished difference Result 384 states and 624 transitions. [2022-07-13 18:18:39,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 18:18:39,355 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-07-13 18:18:39,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:39,390 INFO L225 Difference]: With dead ends: 384 [2022-07-13 18:18:39,390 INFO L226 Difference]: Without dead ends: 196 [2022-07-13 18:18:39,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 18:18:39,426 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:39,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:18:39,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-13 18:18:39,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-07-13 18:18:39,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 160 states have (on average 1.50625) internal successors, (241), 160 states have internal predecessors, (241), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-13 18:18:39,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 299 transitions. [2022-07-13 18:18:39,562 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 299 transitions. Word has length 44 [2022-07-13 18:18:39,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:39,563 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 299 transitions. [2022-07-13 18:18:39,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 18:18:39,564 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 299 transitions. [2022-07-13 18:18:39,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 18:18:39,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:39,571 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] [2022-07-13 18:18:39,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:18:39,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:39,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:39,587 INFO L85 PathProgramCache]: Analyzing trace with hash 589289062, now seen corresponding path program 1 times [2022-07-13 18:18:39,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:39,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226480515] [2022-07-13 18:18:39,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:39,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:39,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:18:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:39,813 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 18:18:39,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:39,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226480515] [2022-07-13 18:18:39,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226480515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:39,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:39,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:18:39,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288472691] [2022-07-13 18:18:39,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:39,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:18:39,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:39,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:18:39,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:18:39,822 INFO L87 Difference]: Start difference. First operand 196 states and 299 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 18:18:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:40,054 INFO L93 Difference]: Finished difference Result 515 states and 789 transitions. [2022-07-13 18:18:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:18:40,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-07-13 18:18:40,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:40,073 INFO L225 Difference]: With dead ends: 515 [2022-07-13 18:18:40,073 INFO L226 Difference]: Without dead ends: 333 [2022-07-13 18:18:40,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:18:40,076 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 171 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:40,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1531 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:18:40,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-13 18:18:40,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 196. [2022-07-13 18:18:40,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 160 states have (on average 1.43125) internal successors, (229), 160 states have internal predecessors, (229), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-13 18:18:40,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 287 transitions. [2022-07-13 18:18:40,111 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 287 transitions. Word has length 44 [2022-07-13 18:18:40,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:40,112 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 287 transitions. [2022-07-13 18:18:40,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 18:18:40,112 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 287 transitions. [2022-07-13 18:18:40,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 18:18:40,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:40,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:40,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:18:40,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:40,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:40,115 INFO L85 PathProgramCache]: Analyzing trace with hash 256458786, now seen corresponding path program 1 times [2022-07-13 18:18:40,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:40,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291210934] [2022-07-13 18:18:40,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:40,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:40,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:40,417 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 18:18:40,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:40,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291210934] [2022-07-13 18:18:40,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291210934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:40,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:40,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:18:40,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897403917] [2022-07-13 18:18:40,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:40,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:18:40,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:40,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:18:40,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:18:40,423 INFO L87 Difference]: Start difference. First operand 196 states and 287 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 18:18:40,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:40,496 INFO L93 Difference]: Finished difference Result 379 states and 564 transitions. [2022-07-13 18:18:40,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:18:40,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-07-13 18:18:40,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:40,516 INFO L225 Difference]: With dead ends: 379 [2022-07-13 18:18:40,516 INFO L226 Difference]: Without dead ends: 200 [2022-07-13 18:18:40,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:18:40,523 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 5 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:40,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 833 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:18:40,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-13 18:18:40,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-07-13 18:18:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 163 states have (on average 1.4233128834355828) internal successors, (232), 163 states have internal predecessors, (232), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-13 18:18:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 290 transitions. [2022-07-13 18:18:40,566 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 290 transitions. Word has length 55 [2022-07-13 18:18:40,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:40,567 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 290 transitions. [2022-07-13 18:18:40,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 18:18:40,567 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 290 transitions. [2022-07-13 18:18:40,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-13 18:18:40,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:40,574 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 18:18:40,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:18:40,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:40,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1571313168, now seen corresponding path program 1 times [2022-07-13 18:18:40,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:40,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120925046] [2022-07-13 18:18:40,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:40,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:40,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:40,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 18:18:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:40,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 18:18:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 18:18:40,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:40,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120925046] [2022-07-13 18:18:40,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120925046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:40,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:40,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:18:40,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507490589] [2022-07-13 18:18:40,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:40,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:18:40,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:40,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:18:40,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:18:40,775 INFO L87 Difference]: Start difference. First operand 200 states and 290 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 18:18:40,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:40,853 INFO L93 Difference]: Finished difference Result 546 states and 804 transitions. [2022-07-13 18:18:40,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:18:40,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 71 [2022-07-13 18:18:40,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:40,859 INFO L225 Difference]: With dead ends: 546 [2022-07-13 18:18:40,860 INFO L226 Difference]: Without dead ends: 363 [2022-07-13 18:18:40,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 18:18:40,869 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 223 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:40,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 599 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:18:40,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-07-13 18:18:40,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 353. [2022-07-13 18:18:40,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 281 states have (on average 1.4448398576512456) internal successors, (406), 282 states have internal predecessors, (406), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-07-13 18:18:40,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 520 transitions. [2022-07-13 18:18:40,925 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 520 transitions. Word has length 71 [2022-07-13 18:18:40,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:40,926 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 520 transitions. [2022-07-13 18:18:40,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 18:18:40,926 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 520 transitions. [2022-07-13 18:18:40,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 18:18:40,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:40,929 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 18:18:40,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:18:40,930 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:40,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:40,931 INFO L85 PathProgramCache]: Analyzing trace with hash 348885538, now seen corresponding path program 1 times [2022-07-13 18:18:40,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:40,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954810109] [2022-07-13 18:18:40,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:40,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:41,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:41,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:18:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 18:18:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 18:18:41,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:41,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954810109] [2022-07-13 18:18:41,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954810109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:41,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:41,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:18:41,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133847088] [2022-07-13 18:18:41,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:41,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:18:41,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:41,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:18:41,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:18:41,169 INFO L87 Difference]: Start difference. First operand 353 states and 520 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 18:18:41,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:41,493 INFO L93 Difference]: Finished difference Result 1015 states and 1522 transitions. [2022-07-13 18:18:41,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 18:18:41,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 72 [2022-07-13 18:18:41,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:41,501 INFO L225 Difference]: With dead ends: 1015 [2022-07-13 18:18:41,501 INFO L226 Difference]: Without dead ends: 679 [2022-07-13 18:18:41,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:18:41,503 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 764 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:41,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 743 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:18:41,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-07-13 18:18:41,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 447. [2022-07-13 18:18:41,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 371 states have (on average 1.431266846361186) internal successors, (531), 372 states have internal predecessors, (531), 59 states have call successors, (59), 16 states have call predecessors, (59), 16 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-13 18:18:41,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 649 transitions. [2022-07-13 18:18:41,546 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 649 transitions. Word has length 72 [2022-07-13 18:18:41,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:41,547 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 649 transitions. [2022-07-13 18:18:41,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 18:18:41,548 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 649 transitions. [2022-07-13 18:18:41,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-13 18:18:41,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:41,549 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 18:18:41,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:18:41,550 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:41,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:41,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1827557999, now seen corresponding path program 1 times [2022-07-13 18:18:41,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:41,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626769917] [2022-07-13 18:18:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:41,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:41,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:41,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:18:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:41,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 18:18:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 18:18:41,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:41,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626769917] [2022-07-13 18:18:41,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626769917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:41,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:41,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:18:41,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110527113] [2022-07-13 18:18:41,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:41,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:18:41,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:41,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:18:41,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:18:41,700 INFO L87 Difference]: Start difference. First operand 447 states and 649 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 18:18:42,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:42,022 INFO L93 Difference]: Finished difference Result 1017 states and 1522 transitions. [2022-07-13 18:18:42,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 18:18:42,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 73 [2022-07-13 18:18:42,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:42,027 INFO L225 Difference]: With dead ends: 1017 [2022-07-13 18:18:42,027 INFO L226 Difference]: Without dead ends: 681 [2022-07-13 18:18:42,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:18:42,030 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 761 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:42,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 745 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:18:42,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-07-13 18:18:42,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 451. [2022-07-13 18:18:42,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 375 states have (on average 1.4266666666666667) internal successors, (535), 376 states have internal predecessors, (535), 59 states have call successors, (59), 16 states have call predecessors, (59), 16 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-13 18:18:42,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 653 transitions. [2022-07-13 18:18:42,075 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 653 transitions. Word has length 73 [2022-07-13 18:18:42,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:42,076 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 653 transitions. [2022-07-13 18:18:42,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 18:18:42,076 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 653 transitions. [2022-07-13 18:18:42,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 18:18:42,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:42,077 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 18:18:42,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:18:42,078 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:42,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash -47235395, now seen corresponding path program 1 times [2022-07-13 18:18:42,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:42,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413253606] [2022-07-13 18:18:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:42,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:42,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:42,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:18:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:42,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 18:18:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 18:18:42,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:42,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413253606] [2022-07-13 18:18:42,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413253606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:42,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:42,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:18:42,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583533388] [2022-07-13 18:18:42,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:42,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:18:42,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:42,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:18:42,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:18:42,230 INFO L87 Difference]: Start difference. First operand 451 states and 653 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 18:18:42,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:42,588 INFO L93 Difference]: Finished difference Result 1017 states and 1518 transitions. [2022-07-13 18:18:42,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:18:42,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 75 [2022-07-13 18:18:42,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:42,596 INFO L225 Difference]: With dead ends: 1017 [2022-07-13 18:18:42,596 INFO L226 Difference]: Without dead ends: 681 [2022-07-13 18:18:42,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:18:42,599 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 228 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:42,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 718 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:18:42,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-07-13 18:18:42,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 451. [2022-07-13 18:18:42,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 375 states have (on average 1.4213333333333333) internal successors, (533), 376 states have internal predecessors, (533), 59 states have call successors, (59), 16 states have call predecessors, (59), 16 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-13 18:18:42,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 651 transitions. [2022-07-13 18:18:42,688 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 651 transitions. Word has length 75 [2022-07-13 18:18:42,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:42,691 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 651 transitions. [2022-07-13 18:18:42,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 18:18:42,691 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 651 transitions. [2022-07-13 18:18:42,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-13 18:18:42,697 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:42,697 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 18:18:42,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:18:42,697 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:42,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:42,699 INFO L85 PathProgramCache]: Analyzing trace with hash 827473940, now seen corresponding path program 1 times [2022-07-13 18:18:42,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:42,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253911711] [2022-07-13 18:18:42,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:42,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:42,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:42,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:18:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:42,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:18:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 18:18:42,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:42,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253911711] [2022-07-13 18:18:42,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253911711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:42,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:42,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:18:42,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567926247] [2022-07-13 18:18:42,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:42,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:18:42,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:42,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:18:42,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:18:42,803 INFO L87 Difference]: Start difference. First operand 451 states and 651 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-13 18:18:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:42,869 INFO L93 Difference]: Finished difference Result 797 states and 1167 transitions. [2022-07-13 18:18:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:18:42,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2022-07-13 18:18:42,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:42,872 INFO L225 Difference]: With dead ends: 797 [2022-07-13 18:18:42,872 INFO L226 Difference]: Without dead ends: 461 [2022-07-13 18:18:42,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:18:42,874 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 6 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:42,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 845 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:18:42,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-07-13 18:18:42,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2022-07-13 18:18:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 383 states have (on average 1.412532637075718) internal successors, (541), 384 states have internal predecessors, (541), 59 states have call successors, (59), 18 states have call predecessors, (59), 18 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-13 18:18:42,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 659 transitions. [2022-07-13 18:18:42,925 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 659 transitions. Word has length 76 [2022-07-13 18:18:42,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:42,925 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 659 transitions. [2022-07-13 18:18:42,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-13 18:18:42,925 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 659 transitions. [2022-07-13 18:18:42,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-13 18:18:42,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:42,927 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 18:18:42,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:18:42,927 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:42,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:42,928 INFO L85 PathProgramCache]: Analyzing trace with hash 193576026, now seen corresponding path program 1 times [2022-07-13 18:18:42,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:42,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200508975] [2022-07-13 18:18:42,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:42,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:18:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:18:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:18:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 18:18:43,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:43,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200508975] [2022-07-13 18:18:43,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200508975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:43,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:43,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:18:43,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781785209] [2022-07-13 18:18:43,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:43,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:18:43,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:43,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:18:43,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:18:43,081 INFO L87 Difference]: Start difference. First operand 461 states and 659 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 18:18:43,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:43,293 INFO L93 Difference]: Finished difference Result 817 states and 1189 transitions. [2022-07-13 18:18:43,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:18:43,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 84 [2022-07-13 18:18:43,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:43,296 INFO L225 Difference]: With dead ends: 817 [2022-07-13 18:18:43,311 INFO L226 Difference]: Without dead ends: 471 [2022-07-13 18:18:43,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:18:43,315 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 6 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:43,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 831 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:18:43,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-07-13 18:18:43,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2022-07-13 18:18:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 391 states have (on average 1.4040920716112533) internal successors, (549), 392 states have internal predecessors, (549), 59 states have call successors, (59), 20 states have call predecessors, (59), 20 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-13 18:18:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 667 transitions. [2022-07-13 18:18:43,386 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 667 transitions. Word has length 84 [2022-07-13 18:18:43,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:43,387 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 667 transitions. [2022-07-13 18:18:43,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 18:18:43,387 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 667 transitions. [2022-07-13 18:18:43,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 18:18:43,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:43,389 INFO L195 NwaCegarLoop]: trace histogram [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 18:18:43,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:18:43,389 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:43,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:43,390 INFO L85 PathProgramCache]: Analyzing trace with hash 910678340, now seen corresponding path program 1 times [2022-07-13 18:18:43,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:43,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111036390] [2022-07-13 18:18:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:43,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:18:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:18:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:18:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:18:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 18:18:43,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:43,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111036390] [2022-07-13 18:18:43,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111036390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:43,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:43,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:18:43,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710183179] [2022-07-13 18:18:43,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:43,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:18:43,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:43,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:18:43,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:18:43,547 INFO L87 Difference]: Start difference. First operand 471 states and 667 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-13 18:18:43,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:43,644 INFO L93 Difference]: Finished difference Result 835 states and 1197 transitions. [2022-07-13 18:18:43,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:18:43,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2022-07-13 18:18:43,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:43,647 INFO L225 Difference]: With dead ends: 835 [2022-07-13 18:18:43,647 INFO L226 Difference]: Without dead ends: 479 [2022-07-13 18:18:43,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:18:43,663 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 5 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:43,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 840 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:18:43,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-07-13 18:18:43,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2022-07-13 18:18:43,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 397 states have (on average 1.397984886649874) internal successors, (555), 398 states have internal predecessors, (555), 59 states have call successors, (59), 22 states have call predecessors, (59), 22 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-13 18:18:43,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 673 transitions. [2022-07-13 18:18:43,731 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 673 transitions. Word has length 92 [2022-07-13 18:18:43,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:43,732 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 673 transitions. [2022-07-13 18:18:43,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-13 18:18:43,732 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 673 transitions. [2022-07-13 18:18:43,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 18:18:43,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:43,734 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-07-13 18:18:43,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:18:43,734 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:43,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:43,735 INFO L85 PathProgramCache]: Analyzing trace with hash -987829653, now seen corresponding path program 1 times [2022-07-13 18:18:43,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:43,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835046748] [2022-07-13 18:18:43,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:43,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:18:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:18:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:18:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:18:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 18:18:43,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:43,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835046748] [2022-07-13 18:18:43,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835046748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:43,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:43,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:18:43,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957790929] [2022-07-13 18:18:43,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:43,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:18:43,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:43,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:18:43,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:18:43,984 INFO L87 Difference]: Start difference. First operand 479 states and 673 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-13 18:18:44,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:44,090 INFO L93 Difference]: Finished difference Result 853 states and 1217 transitions. [2022-07-13 18:18:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:18:44,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2022-07-13 18:18:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:44,094 INFO L225 Difference]: With dead ends: 853 [2022-07-13 18:18:44,094 INFO L226 Difference]: Without dead ends: 489 [2022-07-13 18:18:44,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:18:44,096 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 6 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:44,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 831 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:18:44,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-07-13 18:18:44,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2022-07-13 18:18:44,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 405 states have (on average 1.3901234567901235) internal successors, (563), 406 states have internal predecessors, (563), 59 states have call successors, (59), 24 states have call predecessors, (59), 24 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-13 18:18:44,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 681 transitions. [2022-07-13 18:18:44,127 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 681 transitions. Word has length 92 [2022-07-13 18:18:44,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:44,127 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 681 transitions. [2022-07-13 18:18:44,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-13 18:18:44,128 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 681 transitions. [2022-07-13 18:18:44,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-13 18:18:44,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:44,129 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1] [2022-07-13 18:18:44,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:18:44,130 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:44,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:44,131 INFO L85 PathProgramCache]: Analyzing trace with hash -551537553, now seen corresponding path program 1 times [2022-07-13 18:18:44,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:44,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587430964] [2022-07-13 18:18:44,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:44,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:18:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:18:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:18:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:18:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:18:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,220 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 18:18:44,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:44,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587430964] [2022-07-13 18:18:44,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587430964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:44,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:44,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:18:44,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5169002] [2022-07-13 18:18:44,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:44,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:18:44,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:44,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:18:44,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:18:44,223 INFO L87 Difference]: Start difference. First operand 489 states and 681 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 18:18:44,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:44,293 INFO L93 Difference]: Finished difference Result 875 states and 1231 transitions. [2022-07-13 18:18:44,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:18:44,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 100 [2022-07-13 18:18:44,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:44,297 INFO L225 Difference]: With dead ends: 875 [2022-07-13 18:18:44,297 INFO L226 Difference]: Without dead ends: 501 [2022-07-13 18:18:44,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:18:44,299 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 7 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:44,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 842 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:18:44,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-07-13 18:18:44,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 501. [2022-07-13 18:18:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 415 states have (on average 1.380722891566265) internal successors, (573), 416 states have internal predecessors, (573), 59 states have call successors, (59), 26 states have call predecessors, (59), 26 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-13 18:18:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 691 transitions. [2022-07-13 18:18:44,328 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 691 transitions. Word has length 100 [2022-07-13 18:18:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:44,329 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 691 transitions. [2022-07-13 18:18:44,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 18:18:44,329 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 691 transitions. [2022-07-13 18:18:44,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 18:18:44,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:44,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:44,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:18:44,331 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:44,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:44,332 INFO L85 PathProgramCache]: Analyzing trace with hash -397643204, now seen corresponding path program 1 times [2022-07-13 18:18:44,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:44,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171037213] [2022-07-13 18:18:44,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:44,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:18:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:18:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:18:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:18:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:18:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:18:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 18:18:44,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:44,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171037213] [2022-07-13 18:18:44,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171037213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:44,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:44,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:18:44,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146837924] [2022-07-13 18:18:44,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:44,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:18:44,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:44,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:18:44,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:18:44,513 INFO L87 Difference]: Start difference. First operand 501 states and 691 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 18:18:44,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:44,737 INFO L93 Difference]: Finished difference Result 1365 states and 1906 transitions. [2022-07-13 18:18:44,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:18:44,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 103 [2022-07-13 18:18:44,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:44,743 INFO L225 Difference]: With dead ends: 1365 [2022-07-13 18:18:44,743 INFO L226 Difference]: Without dead ends: 979 [2022-07-13 18:18:44,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:18:44,745 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 386 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:44,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 2219 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:18:44,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2022-07-13 18:18:44,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 645. [2022-07-13 18:18:44,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 522 states have (on average 1.371647509578544) internal successors, (716), 524 states have internal predecessors, (716), 83 states have call successors, (83), 39 states have call predecessors, (83), 39 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2022-07-13 18:18:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 882 transitions. [2022-07-13 18:18:44,815 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 882 transitions. Word has length 103 [2022-07-13 18:18:44,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:44,816 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 882 transitions. [2022-07-13 18:18:44,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 18:18:44,816 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 882 transitions. [2022-07-13 18:18:44,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 18:18:44,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:44,817 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:44,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 18:18:44,818 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:44,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:44,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2035814869, now seen corresponding path program 1 times [2022-07-13 18:18:44,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:44,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048572540] [2022-07-13 18:18:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:44,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:18:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:18:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:18:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:18:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:18:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:18:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 18:18:44,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:44,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048572540] [2022-07-13 18:18:44,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048572540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:44,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:44,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:18:44,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696596646] [2022-07-13 18:18:44,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:44,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:18:44,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:44,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:18:44,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:18:44,881 INFO L87 Difference]: Start difference. First operand 645 states and 882 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 18:18:44,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:44,956 INFO L93 Difference]: Finished difference Result 1151 states and 1587 transitions. [2022-07-13 18:18:44,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:18:44,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 107 [2022-07-13 18:18:44,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:44,960 INFO L225 Difference]: With dead ends: 1151 [2022-07-13 18:18:44,960 INFO L226 Difference]: Without dead ends: 657 [2022-07-13 18:18:44,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:18:44,963 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 5 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:44,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 840 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:18:44,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-07-13 18:18:45,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2022-07-13 18:18:45,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 531 states have (on average 1.3653483992467044) internal successors, (725), 533 states have internal predecessors, (725), 83 states have call successors, (83), 42 states have call predecessors, (83), 42 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2022-07-13 18:18:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 891 transitions. [2022-07-13 18:18:45,010 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 891 transitions. Word has length 107 [2022-07-13 18:18:45,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:45,011 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 891 transitions. [2022-07-13 18:18:45,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 18:18:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 891 transitions. [2022-07-13 18:18:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 18:18:45,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:45,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:45,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 18:18:45,013 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:45,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:45,013 INFO L85 PathProgramCache]: Analyzing trace with hash -533964092, now seen corresponding path program 1 times [2022-07-13 18:18:45,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:45,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233842391] [2022-07-13 18:18:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:45,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:45,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:45,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:18:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:45,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:18:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:45,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:18:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:45,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:18:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:45,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:18:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:45,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:18:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 18:18:45,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:45,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233842391] [2022-07-13 18:18:45,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233842391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:45,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:45,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:18:45,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53156010] [2022-07-13 18:18:45,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:45,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:18:45,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:45,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:18:45,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:18:45,110 INFO L87 Difference]: Start difference. First operand 657 states and 891 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 18:18:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:45,255 INFO L93 Difference]: Finished difference Result 923 states and 1304 transitions. [2022-07-13 18:18:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:18:45,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 106 [2022-07-13 18:18:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:45,261 INFO L225 Difference]: With dead ends: 923 [2022-07-13 18:18:45,261 INFO L226 Difference]: Without dead ends: 921 [2022-07-13 18:18:45,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:18:45,264 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 263 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2198 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 18:18:45,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 2198 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:18:45,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2022-07-13 18:18:45,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 661. [2022-07-13 18:18:45,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 533 states have (on average 1.3639774859287055) internal successors, (727), 536 states have internal predecessors, (727), 84 states have call successors, (84), 43 states have call predecessors, (84), 43 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-13 18:18:45,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 895 transitions. [2022-07-13 18:18:45,321 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 895 transitions. Word has length 106 [2022-07-13 18:18:45,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:45,321 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 895 transitions. [2022-07-13 18:18:45,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 18:18:45,322 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 895 transitions. [2022-07-13 18:18:45,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 18:18:45,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:45,323 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-07-13 18:18:45,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 18:18:45,324 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:45,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:45,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1482497308, now seen corresponding path program 1 times [2022-07-13 18:18:45,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:45,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733790981] [2022-07-13 18:18:45,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:45,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:45,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:45,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:18:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:45,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:18:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:45,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:18:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:45,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:18:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:45,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:18:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:45,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:18:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 18:18:45,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:45,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733790981] [2022-07-13 18:18:45,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733790981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:45,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:45,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:18:45,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589390066] [2022-07-13 18:18:45,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:45,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:18:45,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:45,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:18:45,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:18:45,515 INFO L87 Difference]: Start difference. First operand 661 states and 895 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 18:18:45,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:45,792 INFO L93 Difference]: Finished difference Result 1393 states and 1918 transitions. [2022-07-13 18:18:45,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:18:45,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 109 [2022-07-13 18:18:45,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:45,797 INFO L225 Difference]: With dead ends: 1393 [2022-07-13 18:18:45,797 INFO L226 Difference]: Without dead ends: 924 [2022-07-13 18:18:45,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:18:45,800 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 506 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:45,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 2189 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:18:45,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-07-13 18:18:45,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 705. [2022-07-13 18:18:45,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 586 states have (on average 1.3583617747440273) internal successors, (796), 591 states have internal predecessors, (796), 76 states have call successors, (76), 42 states have call predecessors, (76), 42 states have return successors, (76), 71 states have call predecessors, (76), 76 states have call successors, (76) [2022-07-13 18:18:45,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 948 transitions. [2022-07-13 18:18:45,916 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 948 transitions. Word has length 109 [2022-07-13 18:18:45,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:45,916 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 948 transitions. [2022-07-13 18:18:45,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 18:18:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 948 transitions. [2022-07-13 18:18:45,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 18:18:45,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:45,919 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:45,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 18:18:45,920 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:45,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:45,920 INFO L85 PathProgramCache]: Analyzing trace with hash -845820830, now seen corresponding path program 1 times [2022-07-13 18:18:45,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:45,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832949689] [2022-07-13 18:18:45,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:45,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:18:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:18:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:18:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:18:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:18:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:18:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 18:18:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,188 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 18:18:46,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:46,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832949689] [2022-07-13 18:18:46,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832949689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:46,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:46,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:18:46,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097203915] [2022-07-13 18:18:46,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:46,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:18:46,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:46,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:18:46,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:18:46,190 INFO L87 Difference]: Start difference. First operand 705 states and 948 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 18:18:46,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:46,480 INFO L93 Difference]: Finished difference Result 1456 states and 2000 transitions. [2022-07-13 18:18:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:18:46,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 111 [2022-07-13 18:18:46,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:46,501 INFO L225 Difference]: With dead ends: 1456 [2022-07-13 18:18:46,502 INFO L226 Difference]: Without dead ends: 933 [2022-07-13 18:18:46,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:18:46,504 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 370 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:46,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 2341 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:18:46,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2022-07-13 18:18:46,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 694. [2022-07-13 18:18:46,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 578 states have (on average 1.356401384083045) internal successors, (784), 583 states have internal predecessors, (784), 74 states have call successors, (74), 41 states have call predecessors, (74), 41 states have return successors, (74), 69 states have call predecessors, (74), 74 states have call successors, (74) [2022-07-13 18:18:46,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 932 transitions. [2022-07-13 18:18:46,599 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 932 transitions. Word has length 111 [2022-07-13 18:18:46,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:46,599 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 932 transitions. [2022-07-13 18:18:46,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 18:18:46,600 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 932 transitions. [2022-07-13 18:18:46,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 18:18:46,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:46,601 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:46,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 18:18:46,602 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:46,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:46,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1253142038, now seen corresponding path program 1 times [2022-07-13 18:18:46,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:46,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883025723] [2022-07-13 18:18:46,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:46,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:18:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:18:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:18:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:18:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:18:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:18:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 18:18:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:46,664 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 18:18:46,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:46,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883025723] [2022-07-13 18:18:46,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883025723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:46,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:46,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:18:46,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64994963] [2022-07-13 18:18:46,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:46,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:18:46,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:46,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:18:46,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:18:46,667 INFO L87 Difference]: Start difference. First operand 694 states and 932 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:18:46,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:46,960 INFO L93 Difference]: Finished difference Result 1930 states and 2641 transitions. [2022-07-13 18:18:46,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:18:46,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 112 [2022-07-13 18:18:46,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:46,966 INFO L225 Difference]: With dead ends: 1930 [2022-07-13 18:18:46,967 INFO L226 Difference]: Without dead ends: 1398 [2022-07-13 18:18:46,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:18:46,969 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 436 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:46,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1039 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:18:46,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2022-07-13 18:18:47,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1156. [2022-07-13 18:18:47,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 940 states have (on average 1.348936170212766) internal successors, (1268), 949 states have internal predecessors, (1268), 140 states have call successors, (140), 75 states have call predecessors, (140), 75 states have return successors, (140), 131 states have call predecessors, (140), 140 states have call successors, (140) [2022-07-13 18:18:47,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1548 transitions. [2022-07-13 18:18:47,063 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1548 transitions. Word has length 112 [2022-07-13 18:18:47,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:47,063 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1548 transitions. [2022-07-13 18:18:47,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:18:47,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1548 transitions. [2022-07-13 18:18:47,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 18:18:47,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:47,065 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:47,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 18:18:47,065 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:47,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:47,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1507667202, now seen corresponding path program 1 times [2022-07-13 18:18:47,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:47,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984796765] [2022-07-13 18:18:47,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:47,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 18:18:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:18:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:18:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:18:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:18:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:18:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 18:18:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 18:18:47,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:47,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984796765] [2022-07-13 18:18:47,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984796765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:47,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:47,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:18:47,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906989853] [2022-07-13 18:18:47,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:47,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:18:47,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:47,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:18:47,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:18:47,114 INFO L87 Difference]: Start difference. First operand 1156 states and 1548 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 18:18:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:47,270 INFO L93 Difference]: Finished difference Result 3030 states and 4042 transitions. [2022-07-13 18:18:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:18:47,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 112 [2022-07-13 18:18:47,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:47,280 INFO L225 Difference]: With dead ends: 3030 [2022-07-13 18:18:47,280 INFO L226 Difference]: Without dead ends: 2049 [2022-07-13 18:18:47,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 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 18:18:47,284 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 221 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:47,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 629 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:18:47,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2022-07-13 18:18:47,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 1693. [2022-07-13 18:18:47,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1342 states have (on average 1.342026825633383) internal successors, (1801), 1357 states have internal predecessors, (1801), 230 states have call successors, (230), 120 states have call predecessors, (230), 120 states have return successors, (230), 215 states have call predecessors, (230), 230 states have call successors, (230) [2022-07-13 18:18:47,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2261 transitions. [2022-07-13 18:18:47,475 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2261 transitions. Word has length 112 [2022-07-13 18:18:47,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:47,475 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 2261 transitions. [2022-07-13 18:18:47,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 18:18:47,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2261 transitions. [2022-07-13 18:18:47,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 18:18:47,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:47,478 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:47,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 18:18:47,478 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:47,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:47,479 INFO L85 PathProgramCache]: Analyzing trace with hash -520918908, now seen corresponding path program 1 times [2022-07-13 18:18:47,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:47,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484931764] [2022-07-13 18:18:47,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:47,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 18:18:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:18:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:18:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:18:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:18:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:18:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 18:18:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:47,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 18:18:47,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:47,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484931764] [2022-07-13 18:18:47,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484931764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:47,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:47,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:18:47,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296761068] [2022-07-13 18:18:47,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:47,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:18:47,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:47,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:18:47,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:18:47,631 INFO L87 Difference]: Start difference. First operand 1693 states and 2261 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-13 18:18:48,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:48,339 INFO L93 Difference]: Finished difference Result 3923 states and 5386 transitions. [2022-07-13 18:18:48,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:18:48,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 112 [2022-07-13 18:18:48,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:48,352 INFO L225 Difference]: With dead ends: 3923 [2022-07-13 18:18:48,352 INFO L226 Difference]: Without dead ends: 2501 [2022-07-13 18:18:48,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-13 18:18:48,357 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 902 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:48,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 2711 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:18:48,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2501 states. [2022-07-13 18:18:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2501 to 1699. [2022-07-13 18:18:48,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1342 states have (on average 1.3286140089418779) internal successors, (1783), 1358 states have internal predecessors, (1783), 231 states have call successors, (231), 125 states have call predecessors, (231), 125 states have return successors, (231), 215 states have call predecessors, (231), 231 states have call successors, (231) [2022-07-13 18:18:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2245 transitions. [2022-07-13 18:18:48,538 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2245 transitions. Word has length 112 [2022-07-13 18:18:48,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:48,538 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2245 transitions. [2022-07-13 18:18:48,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-13 18:18:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2245 transitions. [2022-07-13 18:18:48,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-13 18:18:48,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:48,540 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:48,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 18:18:48,541 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:48,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:48,541 INFO L85 PathProgramCache]: Analyzing trace with hash -851800033, now seen corresponding path program 1 times [2022-07-13 18:18:48,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:48,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597156215] [2022-07-13 18:18:48,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:48,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:48,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:48,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:18:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:48,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:18:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:48,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:18:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:48,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:18:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:48,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:18:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:48,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:18:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:48,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 18:18:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 18:18:48,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:48,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597156215] [2022-07-13 18:18:48,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597156215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:48,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:48,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:18:48,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595719226] [2022-07-13 18:18:48,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:48,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:18:48,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:48,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:18:48,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:18:48,641 INFO L87 Difference]: Start difference. First operand 1699 states and 2245 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:18:49,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:49,449 INFO L93 Difference]: Finished difference Result 4059 states and 5487 transitions. [2022-07-13 18:18:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:18:49,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 114 [2022-07-13 18:18:49,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:49,461 INFO L225 Difference]: With dead ends: 4059 [2022-07-13 18:18:49,461 INFO L226 Difference]: Without dead ends: 2689 [2022-07-13 18:18:49,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-13 18:18:49,465 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 784 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:49,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 2377 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:18:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2022-07-13 18:18:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1718. [2022-07-13 18:18:49,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1348 states have (on average 1.3241839762611276) internal successors, (1785), 1365 states have internal predecessors, (1785), 239 states have call successors, (239), 130 states have call predecessors, (239), 130 states have return successors, (239), 222 states have call predecessors, (239), 239 states have call successors, (239) [2022-07-13 18:18:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2263 transitions. [2022-07-13 18:18:49,673 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2263 transitions. Word has length 114 [2022-07-13 18:18:49,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:49,674 INFO L495 AbstractCegarLoop]: Abstraction has 1718 states and 2263 transitions. [2022-07-13 18:18:49,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:18:49,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2263 transitions. [2022-07-13 18:18:49,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-13 18:18:49,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:49,675 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:49,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 18:18:49,676 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:49,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:49,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1202474879, now seen corresponding path program 1 times [2022-07-13 18:18:49,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:49,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103732394] [2022-07-13 18:18:49,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:49,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:49,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 18:18:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:49,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 18:18:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:49,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:18:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:49,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 18:18:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:49,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 18:18:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:49,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:18:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:49,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 18:18:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:49,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 18:18:49,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:49,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103732394] [2022-07-13 18:18:49,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103732394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:49,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:49,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:18:49,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309724736] [2022-07-13 18:18:49,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:49,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:18:49,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:49,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:18:49,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:18:49,732 INFO L87 Difference]: Start difference. First operand 1718 states and 2263 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:18:50,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:50,113 INFO L93 Difference]: Finished difference Result 4482 states and 5976 transitions. [2022-07-13 18:18:50,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:18:50,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-07-13 18:18:50,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:50,127 INFO L225 Difference]: With dead ends: 4482 [2022-07-13 18:18:50,127 INFO L226 Difference]: Without dead ends: 3128 [2022-07-13 18:18:50,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:18:50,131 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 471 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:50,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1246 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:18:50,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2022-07-13 18:18:50,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 2647. [2022-07-13 18:18:50,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2647 states, 2040 states have (on average 1.3205882352941176) internal successors, (2694), 2067 states have internal predecessors, (2694), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2022-07-13 18:18:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 3482 transitions. [2022-07-13 18:18:50,424 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 3482 transitions. Word has length 115 [2022-07-13 18:18:50,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:50,424 INFO L495 AbstractCegarLoop]: Abstraction has 2647 states and 3482 transitions. [2022-07-13 18:18:50,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:18:50,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 3482 transitions. [2022-07-13 18:18:50,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-13 18:18:50,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:50,427 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:50,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 18:18:50,427 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:50,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:50,427 INFO L85 PathProgramCache]: Analyzing trace with hash -368547624, now seen corresponding path program 1 times [2022-07-13 18:18:50,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:50,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085580076] [2022-07-13 18:18:50,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:50,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:50,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:50,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 18:18:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:50,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 18:18:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:50,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 18:18:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:50,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 18:18:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:50,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 18:18:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:50,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 18:18:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:50,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 18:18:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 18:18:50,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:50,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085580076] [2022-07-13 18:18:50,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085580076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:50,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:50,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:18:50,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355795487] [2022-07-13 18:18:50,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:50,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:18:50,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:50,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:18:50,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:18:50,471 INFO L87 Difference]: Start difference. First operand 2647 states and 3482 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:18:51,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:51,028 INFO L93 Difference]: Finished difference Result 6362 states and 8738 transitions. [2022-07-13 18:18:51,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:18:51,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-07-13 18:18:51,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:51,056 INFO L225 Difference]: With dead ends: 6362 [2022-07-13 18:18:51,056 INFO L226 Difference]: Without dead ends: 3959 [2022-07-13 18:18:51,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 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 18:18:51,064 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 152 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:51,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 678 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:18:51,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2022-07-13 18:18:51,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 2650. [2022-07-13 18:18:51,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2043 states have (on average 1.3201174743024964) internal successors, (2697), 2070 states have internal predecessors, (2697), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2022-07-13 18:18:51,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3485 transitions. [2022-07-13 18:18:51,367 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3485 transitions. Word has length 115 [2022-07-13 18:18:51,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:51,367 INFO L495 AbstractCegarLoop]: Abstraction has 2650 states and 3485 transitions. [2022-07-13 18:18:51,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:18:51,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3485 transitions. [2022-07-13 18:18:51,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-13 18:18:51,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:51,370 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:51,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 18:18:51,370 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:51,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:51,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1965817841, now seen corresponding path program 1 times [2022-07-13 18:18:51,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:51,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207032873] [2022-07-13 18:18:51,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:51,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:51,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:51,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 18:18:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:51,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 18:18:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:51,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 18:18:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:51,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 18:18:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:51,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 18:18:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:51,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 18:18:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:51,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 18:18:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 18:18:51,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:51,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207032873] [2022-07-13 18:18:51,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207032873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:51,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:51,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:18:51,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083003905] [2022-07-13 18:18:51,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:51,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:18:51,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:18:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:18:51,426 INFO L87 Difference]: Start difference. First operand 2650 states and 3485 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:18:51,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:51,903 INFO L93 Difference]: Finished difference Result 6371 states and 8442 transitions. [2022-07-13 18:18:51,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:18:51,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-07-13 18:18:51,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:51,919 INFO L225 Difference]: With dead ends: 6371 [2022-07-13 18:18:51,919 INFO L226 Difference]: Without dead ends: 4216 [2022-07-13 18:18:51,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:18:51,926 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 419 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:51,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1252 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:18:51,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4216 states. [2022-07-13 18:18:52,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4216 to 3628. [2022-07-13 18:18:52,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 2782 states have (on average 1.318116462976276) internal successors, (3667), 2819 states have internal predecessors, (3667), 551 states have call successors, (551), 294 states have call predecessors, (551), 294 states have return successors, (551), 514 states have call predecessors, (551), 551 states have call successors, (551) [2022-07-13 18:18:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 4769 transitions. [2022-07-13 18:18:52,289 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 4769 transitions. Word has length 115 [2022-07-13 18:18:52,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:52,289 INFO L495 AbstractCegarLoop]: Abstraction has 3628 states and 4769 transitions. [2022-07-13 18:18:52,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:18:52,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 4769 transitions. [2022-07-13 18:18:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-13 18:18:52,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:52,292 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:52,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 18:18:52,292 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:52,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1320441289, now seen corresponding path program 1 times [2022-07-13 18:18:52,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:52,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262150295] [2022-07-13 18:18:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:52,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:52,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:52,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 18:18:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:52,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 18:18:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:52,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 18:18:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:52,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 18:18:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:52,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 18:18:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:52,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 18:18:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:52,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 18:18:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:52,360 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 18:18:52,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:52,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262150295] [2022-07-13 18:18:52,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262150295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:52,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:52,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:18:52,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70191882] [2022-07-13 18:18:52,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:52,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:18:52,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:52,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:18:52,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:18:52,362 INFO L87 Difference]: Start difference. First operand 3628 states and 4769 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:18:52,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:52,896 INFO L93 Difference]: Finished difference Result 7548 states and 10139 transitions. [2022-07-13 18:18:52,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:18:52,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2022-07-13 18:18:52,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:52,912 INFO L225 Difference]: With dead ends: 7548 [2022-07-13 18:18:52,912 INFO L226 Difference]: Without dead ends: 4013 [2022-07-13 18:18:52,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:18:52,921 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 369 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:52,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 863 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:18:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4013 states. [2022-07-13 18:18:53,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4013 to 3154. [2022-07-13 18:18:53,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3154 states, 2385 states have (on average 1.3174004192872117) internal successors, (3142), 2409 states have internal predecessors, (3142), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2022-07-13 18:18:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 4146 transitions. [2022-07-13 18:18:53,255 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 4146 transitions. Word has length 116 [2022-07-13 18:18:53,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:53,255 INFO L495 AbstractCegarLoop]: Abstraction has 3154 states and 4146 transitions. [2022-07-13 18:18:53,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:18:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 4146 transitions. [2022-07-13 18:18:53,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-13 18:18:53,257 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:53,257 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 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 18:18:53,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 18:18:53,257 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:53,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:53,258 INFO L85 PathProgramCache]: Analyzing trace with hash 685811798, now seen corresponding path program 1 times [2022-07-13 18:18:53,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:53,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857023915] [2022-07-13 18:18:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:53,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:53,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:53,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 18:18:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 18:18:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:53,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 18:18:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 18:18:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:53,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 18:18:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:53,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 18:18:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:53,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 18:18:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:53,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 18:18:53,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:53,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857023915] [2022-07-13 18:18:53,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857023915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:53,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:53,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:18:53,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059249548] [2022-07-13 18:18:53,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:53,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:18:53,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:53,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:18:53,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:18:53,296 INFO L87 Difference]: Start difference. First operand 3154 states and 4146 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:18:53,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:53,844 INFO L93 Difference]: Finished difference Result 6870 states and 9262 transitions. [2022-07-13 18:18:53,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:18:53,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2022-07-13 18:18:53,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:53,862 INFO L225 Difference]: With dead ends: 6870 [2022-07-13 18:18:53,862 INFO L226 Difference]: Without dead ends: 3929 [2022-07-13 18:18:53,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 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 18:18:53,880 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 152 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:53,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 661 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:18:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2022-07-13 18:18:54,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3161. [2022-07-13 18:18:54,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3161 states, 2392 states have (on average 1.3164715719063544) internal successors, (3149), 2416 states have internal predecessors, (3149), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2022-07-13 18:18:54,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3161 states to 3161 states and 4153 transitions. [2022-07-13 18:18:54,210 INFO L78 Accepts]: Start accepts. Automaton has 3161 states and 4153 transitions. Word has length 118 [2022-07-13 18:18:54,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:54,211 INFO L495 AbstractCegarLoop]: Abstraction has 3161 states and 4153 transitions. [2022-07-13 18:18:54,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:18:54,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3161 states and 4153 transitions. [2022-07-13 18:18:54,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-13 18:18:54,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:54,213 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 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 18:18:54,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 18:18:54,214 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:54,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:54,214 INFO L85 PathProgramCache]: Analyzing trace with hash 244049482, now seen corresponding path program 1 times [2022-07-13 18:18:54,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:54,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790762974] [2022-07-13 18:18:54,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:54,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:54,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:54,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 18:18:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:54,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 18:18:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:54,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 18:18:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:54,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 18:18:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:54,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 18:18:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:54,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 18:18:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:54,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 18:18:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:54,269 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 18:18:54,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:54,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790762974] [2022-07-13 18:18:54,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790762974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:54,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:54,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:18:54,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245782087] [2022-07-13 18:18:54,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:54,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:18:54,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:54,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:18:54,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:18:54,271 INFO L87 Difference]: Start difference. First operand 3161 states and 4153 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:18:54,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:54,656 INFO L93 Difference]: Finished difference Result 6836 states and 9224 transitions. [2022-07-13 18:18:54,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:18:54,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2022-07-13 18:18:54,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:54,669 INFO L225 Difference]: With dead ends: 6836 [2022-07-13 18:18:54,669 INFO L226 Difference]: Without dead ends: 3821 [2022-07-13 18:18:54,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:18:54,675 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 278 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:54,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 875 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:18:54,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3821 states. [2022-07-13 18:18:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3821 to 2903. [2022-07-13 18:18:55,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2193 states have (on average 1.3141814865481076) internal successors, (2882), 2212 states have internal predecessors, (2882), 464 states have call successors, (464), 245 states have call predecessors, (464), 245 states have return successors, (464), 445 states have call predecessors, (464), 464 states have call successors, (464) [2022-07-13 18:18:55,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 3810 transitions. [2022-07-13 18:18:55,019 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 3810 transitions. Word has length 118 [2022-07-13 18:18:55,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:55,019 INFO L495 AbstractCegarLoop]: Abstraction has 2903 states and 3810 transitions. [2022-07-13 18:18:55,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:18:55,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 3810 transitions. [2022-07-13 18:18:55,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-13 18:18:55,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:55,025 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 18:18:55,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 18:18:55,026 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:55,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:55,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1017640442, now seen corresponding path program 1 times [2022-07-13 18:18:55,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:55,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293219900] [2022-07-13 18:18:55,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:55,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:55,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:18:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:55,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:18:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:55,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:18:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:55,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:18:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:55,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:18:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:55,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:18:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:55,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:18:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:55,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 18:18:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:55,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-13 18:18:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:55,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 18:18:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:55,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 18:18:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:55,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 18:18:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:55,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-13 18:18:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:55,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:18:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:55,221 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-13 18:18:55,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:55,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293219900] [2022-07-13 18:18:55,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293219900] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:18:55,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131704144] [2022-07-13 18:18:55,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:55,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:18:55,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:18:55,224 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 18:18:55,228 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 18:18:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:55,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 18:18:55,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:18:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 60 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 18:18:55,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:18:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-13 18:18:55,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131704144] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:18:55,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:18:55,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2022-07-13 18:18:55,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452132767] [2022-07-13 18:18:55,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:18:55,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 18:18:55,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:55,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 18:18:55,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-13 18:18:55,997 INFO L87 Difference]: Start difference. First operand 2903 states and 3810 transitions. Second operand has 19 states, 19 states have (on average 14.526315789473685) internal successors, (276), 18 states have internal predecessors, (276), 7 states have call successors, (40), 4 states have call predecessors, (40), 6 states have return successors, (39), 8 states have call predecessors, (39), 7 states have call successors, (39) [2022-07-13 18:19:03,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:03,588 INFO L93 Difference]: Finished difference Result 10536 states and 14440 transitions. [2022-07-13 18:19:03,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-07-13 18:19:03,589 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 14.526315789473685) internal successors, (276), 18 states have internal predecessors, (276), 7 states have call successors, (40), 4 states have call predecessors, (40), 6 states have return successors, (39), 8 states have call predecessors, (39), 7 states have call successors, (39) Word has length 186 [2022-07-13 18:19:03,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:03,618 INFO L225 Difference]: With dead ends: 10536 [2022-07-13 18:19:03,618 INFO L226 Difference]: Without dead ends: 7876 [2022-07-13 18:19:03,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 422 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4892 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2387, Invalid=10953, Unknown=0, NotChecked=0, Total=13340 [2022-07-13 18:19:03,629 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 6205 mSDsluCounter, 6110 mSDsCounter, 0 mSdLazyCounter, 5264 mSolverCounterSat, 2619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6205 SdHoareTripleChecker+Valid, 6751 SdHoareTripleChecker+Invalid, 7883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2619 IncrementalHoareTripleChecker+Valid, 5264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:03,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6205 Valid, 6751 Invalid, 7883 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2619 Valid, 5264 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-13 18:19:03,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7876 states. [2022-07-13 18:19:04,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7876 to 4375. [2022-07-13 18:19:04,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4375 states, 3341 states have (on average 1.3115833582759653) internal successors, (4382), 3366 states have internal predecessors, (4382), 666 states have call successors, (666), 367 states have call predecessors, (666), 367 states have return successors, (666), 641 states have call predecessors, (666), 666 states have call successors, (666) [2022-07-13 18:19:04,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4375 states to 4375 states and 5714 transitions. [2022-07-13 18:19:04,173 INFO L78 Accepts]: Start accepts. Automaton has 4375 states and 5714 transitions. Word has length 186 [2022-07-13 18:19:04,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:04,173 INFO L495 AbstractCegarLoop]: Abstraction has 4375 states and 5714 transitions. [2022-07-13 18:19:04,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.526315789473685) internal successors, (276), 18 states have internal predecessors, (276), 7 states have call successors, (40), 4 states have call predecessors, (40), 6 states have return successors, (39), 8 states have call predecessors, (39), 7 states have call successors, (39) [2022-07-13 18:19:04,174 INFO L276 IsEmpty]: Start isEmpty. Operand 4375 states and 5714 transitions. [2022-07-13 18:19:04,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-13 18:19:04,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:04,182 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 18:19:04,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:04,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-13 18:19:04,395 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:04,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:04,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1082071072, now seen corresponding path program 1 times [2022-07-13 18:19:04,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:04,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425494514] [2022-07-13 18:19:04,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:04,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:19:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 18:19:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:19:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:19:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:19:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:19:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:19:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 18:19:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-13 18:19:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 18:19:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 18:19:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 18:19:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-13 18:19:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:19:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,562 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-13 18:19:04,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:04,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425494514] [2022-07-13 18:19:04,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425494514] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:04,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424410110] [2022-07-13 18:19:04,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:04,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:04,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:04,564 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:04,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 18:19:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 18:19:04,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 18:19:04,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:19:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-13 18:19:05,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424410110] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:19:05,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:19:05,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-07-13 18:19:05,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960989355] [2022-07-13 18:19:05,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:19:05,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 18:19:05,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:05,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 18:19:05,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 18:19:05,094 INFO L87 Difference]: Start difference. First operand 4375 states and 5714 transitions. Second operand has 14 states, 14 states have (on average 18.928571428571427) internal successors, (265), 13 states have internal predecessors, (265), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-13 18:19:08,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:08,345 INFO L93 Difference]: Finished difference Result 11445 states and 15632 transitions. [2022-07-13 18:19:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-13 18:19:08,346 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.928571428571427) internal successors, (265), 13 states have internal predecessors, (265), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 186 [2022-07-13 18:19:08,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:08,374 INFO L225 Difference]: With dead ends: 11445 [2022-07-13 18:19:08,375 INFO L226 Difference]: Without dead ends: 7441 [2022-07-13 18:19:08,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 404 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=749, Invalid=3411, Unknown=0, NotChecked=0, Total=4160 [2022-07-13 18:19:08,388 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 2915 mSDsluCounter, 3657 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2915 SdHoareTripleChecker+Valid, 4133 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 816 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:08,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2915 Valid, 4133 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [816 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 18:19:08,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7441 states. [2022-07-13 18:19:09,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7441 to 4375. [2022-07-13 18:19:09,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4375 states, 3341 states have (on average 1.3064950613588746) internal successors, (4365), 3366 states have internal predecessors, (4365), 666 states have call successors, (666), 367 states have call predecessors, (666), 367 states have return successors, (666), 641 states have call predecessors, (666), 666 states have call successors, (666) [2022-07-13 18:19:09,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4375 states to 4375 states and 5697 transitions. [2022-07-13 18:19:09,036 INFO L78 Accepts]: Start accepts. Automaton has 4375 states and 5697 transitions. Word has length 186 [2022-07-13 18:19:09,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:09,037 INFO L495 AbstractCegarLoop]: Abstraction has 4375 states and 5697 transitions. [2022-07-13 18:19:09,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.928571428571427) internal successors, (265), 13 states have internal predecessors, (265), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-13 18:19:09,037 INFO L276 IsEmpty]: Start isEmpty. Operand 4375 states and 5697 transitions. [2022-07-13 18:19:09,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-13 18:19:09,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:09,045 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 18:19:09,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 18:19:09,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-13 18:19:09,267 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:09,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:09,268 INFO L85 PathProgramCache]: Analyzing trace with hash -848553665, now seen corresponding path program 1 times [2022-07-13 18:19:09,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:09,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749914504] [2022-07-13 18:19:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:09,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:19:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 18:19:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:19:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:19:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:19:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:19:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:19:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 18:19:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 18:19:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 18:19:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-13 18:19:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-13 18:19:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-13 18:19:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 18:19:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-13 18:19:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,365 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-13 18:19:09,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:09,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749914504] [2022-07-13 18:19:09,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749914504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:09,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:09,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:19:09,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490085581] [2022-07-13 18:19:09,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:09,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:19:09,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:09,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:19:09,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:19:09,367 INFO L87 Difference]: Start difference. First operand 4375 states and 5697 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 18:19:11,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:11,070 INFO L93 Difference]: Finished difference Result 14775 states and 19879 transitions. [2022-07-13 18:19:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 18:19:11,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 195 [2022-07-13 18:19:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:11,102 INFO L225 Difference]: With dead ends: 14775 [2022-07-13 18:19:11,102 INFO L226 Difference]: Without dead ends: 10798 [2022-07-13 18:19:11,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-07-13 18:19:11,113 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 814 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:11,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 2987 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:19:11,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10798 states. [2022-07-13 18:19:11,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10798 to 6095. [2022-07-13 18:19:11,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6095 states, 4585 states have (on average 1.3042529989094875) internal successors, (5980), 4622 states have internal predecessors, (5980), 986 states have call successors, (986), 523 states have call predecessors, (986), 523 states have return successors, (986), 949 states have call predecessors, (986), 986 states have call successors, (986) [2022-07-13 18:19:11,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6095 states to 6095 states and 7952 transitions. [2022-07-13 18:19:11,977 INFO L78 Accepts]: Start accepts. Automaton has 6095 states and 7952 transitions. Word has length 195 [2022-07-13 18:19:11,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:11,978 INFO L495 AbstractCegarLoop]: Abstraction has 6095 states and 7952 transitions. [2022-07-13 18:19:11,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 18:19:11,978 INFO L276 IsEmpty]: Start isEmpty. Operand 6095 states and 7952 transitions. [2022-07-13 18:19:11,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-13 18:19:11,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:11,991 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 18:19:11,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 18:19:11,991 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:11,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:11,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1979235098, now seen corresponding path program 1 times [2022-07-13 18:19:11,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:11,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178443363] [2022-07-13 18:19:11,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:11,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:19:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 18:19:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:19:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:19:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:19:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:19:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:19:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 18:19:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 18:19:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 18:19:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-13 18:19:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-13 18:19:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-13 18:19:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-13 18:19:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-13 18:19:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-13 18:19:12,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:12,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178443363] [2022-07-13 18:19:12,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178443363] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:12,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659897577] [2022-07-13 18:19:12,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:12,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:12,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:12,172 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:12,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 18:19:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 18:19:12,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 57 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 18:19:12,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:19:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-13 18:19:12,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659897577] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:19:12,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:19:12,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-07-13 18:19:12,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177510709] [2022-07-13 18:19:12,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:19:12,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 18:19:12,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:12,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 18:19:12,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-13 18:19:12,830 INFO L87 Difference]: Start difference. First operand 6095 states and 7952 transitions. Second operand has 16 states, 16 states have (on average 18.25) internal successors, (292), 15 states have internal predecessors, (292), 7 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 7 states have call successors, (43) [2022-07-13 18:19:21,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:21,801 INFO L93 Difference]: Finished difference Result 25555 states and 34837 transitions. [2022-07-13 18:19:21,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-07-13 18:19:21,802 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.25) internal successors, (292), 15 states have internal predecessors, (292), 7 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 7 states have call successors, (43) Word has length 197 [2022-07-13 18:19:21,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:21,857 INFO L225 Difference]: With dead ends: 25555 [2022-07-13 18:19:21,857 INFO L226 Difference]: Without dead ends: 19858 [2022-07-13 18:19:21,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 475 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8832 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3372, Invalid=18384, Unknown=0, NotChecked=0, Total=21756 [2022-07-13 18:19:21,879 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 11199 mSDsluCounter, 5307 mSDsCounter, 0 mSdLazyCounter, 4040 mSolverCounterSat, 5030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11199 SdHoareTripleChecker+Valid, 6115 SdHoareTripleChecker+Invalid, 9070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5030 IncrementalHoareTripleChecker+Valid, 4040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:21,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11199 Valid, 6115 Invalid, 9070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5030 Valid, 4040 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-13 18:19:21,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19858 states. [2022-07-13 18:19:23,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19858 to 8804. [2022-07-13 18:19:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8804 states, 6596 states have (on average 1.2997271073377805) internal successors, (8573), 6651 states have internal predecessors, (8573), 1438 states have call successors, (1438), 769 states have call predecessors, (1438), 769 states have return successors, (1438), 1383 states have call predecessors, (1438), 1438 states have call successors, (1438) [2022-07-13 18:19:23,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8804 states to 8804 states and 11449 transitions. [2022-07-13 18:19:23,185 INFO L78 Accepts]: Start accepts. Automaton has 8804 states and 11449 transitions. Word has length 197 [2022-07-13 18:19:23,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:23,186 INFO L495 AbstractCegarLoop]: Abstraction has 8804 states and 11449 transitions. [2022-07-13 18:19:23,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.25) internal successors, (292), 15 states have internal predecessors, (292), 7 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 7 states have call successors, (43) [2022-07-13 18:19:23,187 INFO L276 IsEmpty]: Start isEmpty. Operand 8804 states and 11449 transitions. [2022-07-13 18:19:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-07-13 18:19:23,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:23,201 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2022-07-13 18:19:23,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:23,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:23,415 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:23,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:23,416 INFO L85 PathProgramCache]: Analyzing trace with hash 2112351607, now seen corresponding path program 1 times [2022-07-13 18:19:23,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:23,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080628338] [2022-07-13 18:19:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:23,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:19:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:19:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 18:19:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:19:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 18:19:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 18:19:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 18:19:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 18:19:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 18:19:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-13 18:19:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-13 18:19:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-13 18:19:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-13 18:19:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-13 18:19:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-13 18:19:23,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:23,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080628338] [2022-07-13 18:19:23,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080628338] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:23,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765005171] [2022-07-13 18:19:23,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:23,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:23,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:23,631 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:23,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 18:19:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 18:19:23,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:23,921 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 52 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 18:19:23,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:19:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-13 18:19:24,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765005171] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:19:24,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:19:24,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-07-13 18:19:24,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365078161] [2022-07-13 18:19:24,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:19:24,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 18:19:24,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:24,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 18:19:24,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:19:24,026 INFO L87 Difference]: Start difference. First operand 8804 states and 11449 transitions. Second operand has 17 states, 17 states have (on average 14.647058823529411) internal successors, (249), 16 states have internal predecessors, (249), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-13 18:19:29,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:29,610 INFO L93 Difference]: Finished difference Result 26224 states and 35927 transitions. [2022-07-13 18:19:29,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-13 18:19:29,611 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.647058823529411) internal successors, (249), 16 states have internal predecessors, (249), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 198 [2022-07-13 18:19:29,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:29,663 INFO L225 Difference]: With dead ends: 26224 [2022-07-13 18:19:29,663 INFO L226 Difference]: Without dead ends: 17740 [2022-07-13 18:19:29,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1406 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=662, Invalid=4168, Unknown=0, NotChecked=0, Total=4830 [2022-07-13 18:19:29,682 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 2724 mSDsluCounter, 8066 mSDsCounter, 0 mSdLazyCounter, 4604 mSolverCounterSat, 1223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2724 SdHoareTripleChecker+Valid, 8912 SdHoareTripleChecker+Invalid, 5827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1223 IncrementalHoareTripleChecker+Valid, 4604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:29,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2724 Valid, 8912 Invalid, 5827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1223 Valid, 4604 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 18:19:29,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17740 states. [2022-07-13 18:19:31,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17740 to 10202. [2022-07-13 18:19:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10202 states, 7620 states have (on average 1.2964566929133858) internal successors, (9879), 7685 states have internal predecessors, (9879), 1676 states have call successors, (1676), 905 states have call predecessors, (1676), 905 states have return successors, (1676), 1611 states have call predecessors, (1676), 1676 states have call successors, (1676) [2022-07-13 18:19:31,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10202 states to 10202 states and 13231 transitions. [2022-07-13 18:19:31,310 INFO L78 Accepts]: Start accepts. Automaton has 10202 states and 13231 transitions. Word has length 198 [2022-07-13 18:19:31,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:31,311 INFO L495 AbstractCegarLoop]: Abstraction has 10202 states and 13231 transitions. [2022-07-13 18:19:31,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.647058823529411) internal successors, (249), 16 states have internal predecessors, (249), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-13 18:19:31,311 INFO L276 IsEmpty]: Start isEmpty. Operand 10202 states and 13231 transitions. [2022-07-13 18:19:31,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-13 18:19:31,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:31,330 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 18:19:31,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:31,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:31,555 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:31,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:31,556 INFO L85 PathProgramCache]: Analyzing trace with hash 119415747, now seen corresponding path program 1 times [2022-07-13 18:19:31,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:31,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070224306] [2022-07-13 18:19:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:31,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:19:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:19:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 18:19:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:19:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 18:19:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 18:19:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 18:19:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 18:19:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 18:19:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 18:19:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 18:19:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-13 18:19:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-13 18:19:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-13 18:19:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-13 18:19:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-13 18:19:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-13 18:19:31,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:31,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070224306] [2022-07-13 18:19:31,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070224306] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:31,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216432537] [2022-07-13 18:19:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:31,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:31,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:31,735 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:31,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 18:19:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:31,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 18:19:31,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 74 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 18:19:32,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:19:32,220 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-13 18:19:32,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216432537] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:19:32,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:19:32,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-07-13 18:19:32,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377806854] [2022-07-13 18:19:32,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:19:32,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:19:32,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:32,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:19:32,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:19:32,223 INFO L87 Difference]: Start difference. First operand 10202 states and 13231 transitions. Second operand has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 8 states have internal predecessors, (181), 3 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-07-13 18:19:34,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:34,497 INFO L93 Difference]: Finished difference Result 24241 states and 32560 transitions. [2022-07-13 18:19:34,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 18:19:34,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 8 states have internal predecessors, (181), 3 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 206 [2022-07-13 18:19:34,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:34,534 INFO L225 Difference]: With dead ends: 24241 [2022-07-13 18:19:34,535 INFO L226 Difference]: Without dead ends: 14427 [2022-07-13 18:19:34,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 441 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:19:34,546 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 287 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:34,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 2635 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:19:34,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14427 states. [2022-07-13 18:19:35,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14427 to 10202. [2022-07-13 18:19:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10202 states, 7620 states have (on average 1.2955380577427822) internal successors, (9872), 7685 states have internal predecessors, (9872), 1676 states have call successors, (1676), 905 states have call predecessors, (1676), 905 states have return successors, (1676), 1611 states have call predecessors, (1676), 1676 states have call successors, (1676) [2022-07-13 18:19:35,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10202 states to 10202 states and 13224 transitions. [2022-07-13 18:19:36,000 INFO L78 Accepts]: Start accepts. Automaton has 10202 states and 13224 transitions. Word has length 206 [2022-07-13 18:19:36,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:36,003 INFO L495 AbstractCegarLoop]: Abstraction has 10202 states and 13224 transitions. [2022-07-13 18:19:36,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 8 states have internal predecessors, (181), 3 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-07-13 18:19:36,003 INFO L276 IsEmpty]: Start isEmpty. Operand 10202 states and 13224 transitions. [2022-07-13 18:19:36,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-13 18:19:36,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:36,022 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:36,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:36,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-13 18:19:36,238 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:36,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:36,238 INFO L85 PathProgramCache]: Analyzing trace with hash 805721994, now seen corresponding path program 1 times [2022-07-13 18:19:36,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:36,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593299764] [2022-07-13 18:19:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:36,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:19:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:19:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 18:19:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:19:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 18:19:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 18:19:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:19:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 18:19:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 18:19:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 18:19:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 18:19:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-13 18:19:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-13 18:19:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-13 18:19:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-13 18:19:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-13 18:19:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-13 18:19:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-13 18:19:36,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:36,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593299764] [2022-07-13 18:19:36,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593299764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:36,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:36,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:19:36,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204020569] [2022-07-13 18:19:36,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:36,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:36,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:36,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:36,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:36,377 INFO L87 Difference]: Start difference. First operand 10202 states and 13224 transitions. Second operand has 5 states, 4 states have (on average 29.75) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-13 18:19:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:37,234 INFO L93 Difference]: Finished difference Result 16456 states and 21423 transitions. [2022-07-13 18:19:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:37,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 29.75) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 213 [2022-07-13 18:19:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:37,254 INFO L225 Difference]: With dead ends: 16456 [2022-07-13 18:19:37,254 INFO L226 Difference]: Without dead ends: 6610 [2022-07-13 18:19:37,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:19:37,271 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 2 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:37,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1124 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:37,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6610 states. [2022-07-13 18:19:38,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 6610. [2022-07-13 18:19:38,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6610 states, 4952 states have (on average 1.2952342487883683) internal successors, (6414), 4993 states have internal predecessors, (6414), 1080 states have call successors, (1080), 577 states have call predecessors, (1080), 577 states have return successors, (1080), 1039 states have call predecessors, (1080), 1080 states have call successors, (1080) [2022-07-13 18:19:38,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6610 states to 6610 states and 8574 transitions. [2022-07-13 18:19:38,231 INFO L78 Accepts]: Start accepts. Automaton has 6610 states and 8574 transitions. Word has length 213 [2022-07-13 18:19:38,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:38,232 INFO L495 AbstractCegarLoop]: Abstraction has 6610 states and 8574 transitions. [2022-07-13 18:19:38,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 29.75) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-13 18:19:38,232 INFO L276 IsEmpty]: Start isEmpty. Operand 6610 states and 8574 transitions. [2022-07-13 18:19:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-13 18:19:38,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:38,241 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:38,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 18:19:38,242 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:38,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:38,242 INFO L85 PathProgramCache]: Analyzing trace with hash -141131184, now seen corresponding path program 1 times [2022-07-13 18:19:38,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:38,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607924460] [2022-07-13 18:19:38,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:38,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:19:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:19:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 18:19:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:19:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 18:19:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 18:19:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:19:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 18:19:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 18:19:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 18:19:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 18:19:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 18:19:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-13 18:19:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-13 18:19:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-13 18:19:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-13 18:19:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-13 18:19:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-13 18:19:38,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:38,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607924460] [2022-07-13 18:19:38,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607924460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:38,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:38,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:19:38,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577057662] [2022-07-13 18:19:38,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:38,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:38,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:38,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:38,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:38,339 INFO L87 Difference]: Start difference. First operand 6610 states and 8574 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 18:19:39,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:39,216 INFO L93 Difference]: Finished difference Result 12567 states and 16379 transitions. [2022-07-13 18:19:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:39,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 213 [2022-07-13 18:19:39,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:39,228 INFO L225 Difference]: With dead ends: 12567 [2022-07-13 18:19:39,228 INFO L226 Difference]: Without dead ends: 6246 [2022-07-13 18:19:39,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 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 18:19:39,237 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 435 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:39,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 463 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:19:39,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6246 states. [2022-07-13 18:19:40,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6246 to 6246. [2022-07-13 18:19:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6246 states, 4682 states have (on average 1.2964545066211022) internal successors, (6070), 4721 states have internal predecessors, (6070), 1020 states have call successors, (1020), 543 states have call predecessors, (1020), 543 states have return successors, (1020), 981 states have call predecessors, (1020), 1020 states have call successors, (1020) [2022-07-13 18:19:40,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6246 states to 6246 states and 8110 transitions. [2022-07-13 18:19:40,088 INFO L78 Accepts]: Start accepts. Automaton has 6246 states and 8110 transitions. Word has length 213 [2022-07-13 18:19:40,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:40,088 INFO L495 AbstractCegarLoop]: Abstraction has 6246 states and 8110 transitions. [2022-07-13 18:19:40,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 18:19:40,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6246 states and 8110 transitions. [2022-07-13 18:19:40,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-13 18:19:40,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:40,096 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 18:19:40,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-13 18:19:40,097 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:40,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:40,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1714941869, now seen corresponding path program 1 times [2022-07-13 18:19:40,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:40,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721225564] [2022-07-13 18:19:40,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:40,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:19:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:19:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:19:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:19:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:19:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:19:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 18:19:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 18:19:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 18:19:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 18:19:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-13 18:19:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-13 18:19:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-13 18:19:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-13 18:19:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-13 18:19:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-13 18:19:40,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:40,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721225564] [2022-07-13 18:19:40,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721225564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:40,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:40,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:19:40,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111852236] [2022-07-13 18:19:40,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:40,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:40,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:40,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:40,200 INFO L87 Difference]: Start difference. First operand 6246 states and 8110 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 18:19:40,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:40,946 INFO L93 Difference]: Finished difference Result 11973 states and 15602 transitions. [2022-07-13 18:19:40,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:40,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 215 [2022-07-13 18:19:40,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:40,958 INFO L225 Difference]: With dead ends: 11973 [2022-07-13 18:19:40,959 INFO L226 Difference]: Without dead ends: 5934 [2022-07-13 18:19:40,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 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 18:19:40,968 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 278 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:40,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 430 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:19:40,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5934 states. [2022-07-13 18:19:41,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5934 to 5776. [2022-07-13 18:19:41,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5776 states, 4328 states have (on average 1.299445471349353) internal successors, (5624), 4364 states have internal predecessors, (5624), 943 states have call successors, (943), 504 states have call predecessors, (943), 504 states have return successors, (943), 907 states have call predecessors, (943), 943 states have call successors, (943) [2022-07-13 18:19:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5776 states to 5776 states and 7510 transitions. [2022-07-13 18:19:41,699 INFO L78 Accepts]: Start accepts. Automaton has 5776 states and 7510 transitions. Word has length 215 [2022-07-13 18:19:41,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:41,699 INFO L495 AbstractCegarLoop]: Abstraction has 5776 states and 7510 transitions. [2022-07-13 18:19:41,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 18:19:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5776 states and 7510 transitions. [2022-07-13 18:19:41,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-13 18:19:41,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:41,705 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 18:19:41,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-13 18:19:41,705 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:41,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:41,705 INFO L85 PathProgramCache]: Analyzing trace with hash 925716466, now seen corresponding path program 1 times [2022-07-13 18:19:41,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:41,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915673446] [2022-07-13 18:19:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:41,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:19:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:19:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 18:19:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:19:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 18:19:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 18:19:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:19:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 18:19:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 18:19:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 18:19:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 18:19:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 18:19:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-13 18:19:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-13 18:19:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-13 18:19:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-13 18:19:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-13 18:19:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 29 proven. 19 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-13 18:19:41,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:41,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915673446] [2022-07-13 18:19:41,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915673446] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:41,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280691623] [2022-07-13 18:19:41,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:41,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:41,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:41,883 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:41,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 18:19:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 18:19:42,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:42,690 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 69 proven. 40 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 18:19:42,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:19:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 16 proven. 32 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-13 18:19:43,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280691623] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:19:43,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:19:43,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 10] total 23 [2022-07-13 18:19:43,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172354003] [2022-07-13 18:19:43,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:19:43,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 18:19:43,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:43,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 18:19:43,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2022-07-13 18:19:43,508 INFO L87 Difference]: Start difference. First operand 5776 states and 7510 transitions. Second operand has 23 states, 23 states have (on average 16.47826086956522) internal successors, (379), 23 states have internal predecessors, (379), 9 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 9 states have call predecessors, (46), 9 states have call successors, (46) [2022-07-13 18:19:57,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:57,116 INFO L93 Difference]: Finished difference Result 18834 states and 25884 transitions. [2022-07-13 18:19:57,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2022-07-13 18:19:57,119 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 16.47826086956522) internal successors, (379), 23 states have internal predecessors, (379), 9 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 9 states have call predecessors, (46), 9 states have call successors, (46) Word has length 214 [2022-07-13 18:19:57,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:57,151 INFO L225 Difference]: With dead ends: 18834 [2022-07-13 18:19:57,151 INFO L226 Difference]: Without dead ends: 13353 [2022-07-13 18:19:57,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 452 SyntacticMatches, 2 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16570 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6509, Invalid=34903, Unknown=0, NotChecked=0, Total=41412 [2022-07-13 18:19:57,172 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 7032 mSDsluCounter, 5918 mSDsCounter, 0 mSdLazyCounter, 8205 mSolverCounterSat, 5493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7032 SdHoareTripleChecker+Valid, 6451 SdHoareTripleChecker+Invalid, 13698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5493 IncrementalHoareTripleChecker+Valid, 8205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:57,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7032 Valid, 6451 Invalid, 13698 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5493 Valid, 8205 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-07-13 18:19:57,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13353 states. [2022-07-13 18:19:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13353 to 6417. [2022-07-13 18:19:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6417 states, 4815 states have (on average 1.2936656282450676) internal successors, (6229), 4855 states have internal predecessors, (6229), 1040 states have call successors, (1040), 561 states have call predecessors, (1040), 561 states have return successors, (1040), 1000 states have call predecessors, (1040), 1040 states have call successors, (1040) [2022-07-13 18:19:58,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6417 states to 6417 states and 8309 transitions. [2022-07-13 18:19:58,600 INFO L78 Accepts]: Start accepts. Automaton has 6417 states and 8309 transitions. Word has length 214 [2022-07-13 18:19:58,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:58,601 INFO L495 AbstractCegarLoop]: Abstraction has 6417 states and 8309 transitions. [2022-07-13 18:19:58,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 16.47826086956522) internal successors, (379), 23 states have internal predecessors, (379), 9 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 9 states have call predecessors, (46), 9 states have call successors, (46) [2022-07-13 18:19:58,601 INFO L276 IsEmpty]: Start isEmpty. Operand 6417 states and 8309 transitions. [2022-07-13 18:19:58,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-13 18:19:58,617 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:58,617 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 18:19:58,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:58,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-13 18:19:58,835 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:58,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:58,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1546946191, now seen corresponding path program 1 times [2022-07-13 18:19:58,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:58,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720126360] [2022-07-13 18:19:58,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:58,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:19:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 18:19:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 18:19:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:19:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 18:19:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 18:19:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:19:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 18:19:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 18:19:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 18:19:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 18:19:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 18:19:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-13 18:19:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:19:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-13 18:19:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-13 18:19:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-13 18:19:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 14 proven. 40 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-13 18:19:59,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:59,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720126360] [2022-07-13 18:19:59,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720126360] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:59,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404691367] [2022-07-13 18:19:59,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:59,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:59,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:59,053 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:59,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 18:19:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:59,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 18:19:59,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 8 proven. 117 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-13 18:19:59,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:19:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 14 proven. 40 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-13 18:19:59,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404691367] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:19:59,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:19:59,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-07-13 18:19:59,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907963551] [2022-07-13 18:19:59,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:19:59,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:19:59,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:59,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:19:59,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:19:59,888 INFO L87 Difference]: Start difference. First operand 6417 states and 8309 transitions. Second operand has 10 states, 10 states have (on average 19.3) internal successors, (193), 9 states have internal predecessors, (193), 4 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2022-07-13 18:20:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:02,762 INFO L93 Difference]: Finished difference Result 18719 states and 24248 transitions. [2022-07-13 18:20:02,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 18:20:02,763 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.3) internal successors, (193), 9 states have internal predecessors, (193), 4 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) Word has length 216 [2022-07-13 18:20:02,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:02,790 INFO L225 Difference]: With dead ends: 18719 [2022-07-13 18:20:02,790 INFO L226 Difference]: Without dead ends: 12668 [2022-07-13 18:20:02,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 465 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-07-13 18:20:02,803 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 754 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 3227 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:02,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 3227 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:20:02,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12668 states. [2022-07-13 18:20:04,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12668 to 9763. [2022-07-13 18:20:04,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9763 states, 7386 states have (on average 1.2772813430815055) internal successors, (9434), 7460 states have internal predecessors, (9434), 1528 states have call successors, (1528), 848 states have call predecessors, (1528), 848 states have return successors, (1528), 1454 states have call predecessors, (1528), 1528 states have call successors, (1528) [2022-07-13 18:20:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9763 states to 9763 states and 12490 transitions. [2022-07-13 18:20:04,711 INFO L78 Accepts]: Start accepts. Automaton has 9763 states and 12490 transitions. Word has length 216 [2022-07-13 18:20:04,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:04,712 INFO L495 AbstractCegarLoop]: Abstraction has 9763 states and 12490 transitions. [2022-07-13 18:20:04,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.3) internal successors, (193), 9 states have internal predecessors, (193), 4 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2022-07-13 18:20:04,712 INFO L276 IsEmpty]: Start isEmpty. Operand 9763 states and 12490 transitions. [2022-07-13 18:20:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-13 18:20:04,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:04,719 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 18:20:04,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 18:20:04,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:04,943 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:04,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:04,943 INFO L85 PathProgramCache]: Analyzing trace with hash -78007483, now seen corresponding path program 1 times [2022-07-13 18:20:04,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:04,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364297601] [2022-07-13 18:20:04,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:04,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:20:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:20:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 18:20:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:20:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 18:20:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 18:20:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:20:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 18:20:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 18:20:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 18:20:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 18:20:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 18:20:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:20:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-13 18:20:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-13 18:20:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-13 18:20:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-13 18:20:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-07-13 18:20:05,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:05,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364297601] [2022-07-13 18:20:05,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364297601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:20:05,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:20:05,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:20:05,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817430018] [2022-07-13 18:20:05,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:20:05,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:20:05,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:05,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:20:05,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:20:05,091 INFO L87 Difference]: Start difference. First operand 9763 states and 12490 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 18:20:07,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:07,267 INFO L93 Difference]: Finished difference Result 18382 states and 23591 transitions. [2022-07-13 18:20:07,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:20:07,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 215 [2022-07-13 18:20:07,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:07,319 INFO L225 Difference]: With dead ends: 18382 [2022-07-13 18:20:07,319 INFO L226 Difference]: Without dead ends: 8911 [2022-07-13 18:20:07,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:20:07,345 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 226 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:07,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 442 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:20:07,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8911 states. [2022-07-13 18:20:08,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8911 to 8895. [2022-07-13 18:20:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8895 states, 6735 states have (on average 1.2760207869339273) internal successors, (8594), 6802 states have internal predecessors, (8594), 1393 states have call successors, (1393), 766 states have call predecessors, (1393), 766 states have return successors, (1393), 1326 states have call predecessors, (1393), 1393 states have call successors, (1393) [2022-07-13 18:20:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8895 states to 8895 states and 11380 transitions. [2022-07-13 18:20:08,902 INFO L78 Accepts]: Start accepts. Automaton has 8895 states and 11380 transitions. Word has length 215 [2022-07-13 18:20:08,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:08,902 INFO L495 AbstractCegarLoop]: Abstraction has 8895 states and 11380 transitions. [2022-07-13 18:20:08,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 18:20:08,902 INFO L276 IsEmpty]: Start isEmpty. Operand 8895 states and 11380 transitions. [2022-07-13 18:20:08,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-13 18:20:08,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:08,908 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:20:08,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-13 18:20:08,908 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:08,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:08,909 INFO L85 PathProgramCache]: Analyzing trace with hash -629375482, now seen corresponding path program 1 times [2022-07-13 18:20:08,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:08,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339780395] [2022-07-13 18:20:08,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:08,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:20:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:20:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 18:20:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:20:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 18:20:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 18:20:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:20:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 18:20:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 18:20:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 18:20:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 18:20:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-13 18:20:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 18:20:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-13 18:20:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-13 18:20:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-13 18:20:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-13 18:20:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-13 18:20:09,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:09,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339780395] [2022-07-13 18:20:09,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339780395] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:20:09,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706626408] [2022-07-13 18:20:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:09,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:09,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:20:09,144 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:20:09,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 18:20:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:09,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-13 18:20:09,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:20:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 80 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 18:20:09,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:20:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-13 18:20:09,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706626408] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:20:09,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:20:09,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 14 [2022-07-13 18:20:09,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534301817] [2022-07-13 18:20:09,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:20:09,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 18:20:09,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:09,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 18:20:09,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-13 18:20:09,807 INFO L87 Difference]: Start difference. First operand 8895 states and 11380 transitions. Second operand has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 6 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) [2022-07-13 18:20:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:17,492 INFO L93 Difference]: Finished difference Result 39342 states and 53488 transitions. [2022-07-13 18:20:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-07-13 18:20:17,493 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 6 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) Word has length 216 [2022-07-13 18:20:17,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:17,583 INFO L225 Difference]: With dead ends: 39342 [2022-07-13 18:20:17,584 INFO L226 Difference]: Without dead ends: 31381 [2022-07-13 18:20:17,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=952, Invalid=5054, Unknown=0, NotChecked=0, Total=6006 [2022-07-13 18:20:17,606 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 2263 mSDsluCounter, 7865 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 683 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2357 SdHoareTripleChecker+Valid, 8856 SdHoareTripleChecker+Invalid, 2492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 683 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:17,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2357 Valid, 8856 Invalid, 2492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [683 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 18:20:17,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31381 states. [2022-07-13 18:20:21,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31381 to 17867. [2022-07-13 18:20:21,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17867 states, 13797 states have (on average 1.2757121113285497) internal successors, (17601), 13916 states have internal predecessors, (17601), 2590 states have call successors, (2590), 1479 states have call predecessors, (2590), 1479 states have return successors, (2590), 2471 states have call predecessors, (2590), 2590 states have call successors, (2590) [2022-07-13 18:20:21,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17867 states to 17867 states and 22781 transitions. [2022-07-13 18:20:21,293 INFO L78 Accepts]: Start accepts. Automaton has 17867 states and 22781 transitions. Word has length 216 [2022-07-13 18:20:21,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:21,294 INFO L495 AbstractCegarLoop]: Abstraction has 17867 states and 22781 transitions. [2022-07-13 18:20:21,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 6 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) [2022-07-13 18:20:21,294 INFO L276 IsEmpty]: Start isEmpty. Operand 17867 states and 22781 transitions. [2022-07-13 18:20:21,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-13 18:20:21,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:21,306 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:20:21,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-13 18:20:21,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-07-13 18:20:21,531 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:21,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:21,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1997836092, now seen corresponding path program 1 times [2022-07-13 18:20:21,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:21,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682832234] [2022-07-13 18:20:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:21,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:20:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:20:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 18:20:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:20:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 18:20:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 18:20:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:20:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 18:20:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 18:20:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 18:20:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 18:20:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-13 18:20:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 18:20:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-13 18:20:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-13 18:20:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-13 18:20:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-13 18:20:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-13 18:20:21,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:21,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682832234] [2022-07-13 18:20:21,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682832234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:20:21,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:20:21,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:20:21,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889066861] [2022-07-13 18:20:21,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:20:21,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:20:21,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:21,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:20:21,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:20:21,621 INFO L87 Difference]: Start difference. First operand 17867 states and 22781 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 18:20:24,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:24,502 INFO L93 Difference]: Finished difference Result 30426 states and 38976 transitions. [2022-07-13 18:20:24,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:20:24,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 216 [2022-07-13 18:20:24,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:24,613 INFO L225 Difference]: With dead ends: 30426 [2022-07-13 18:20:24,613 INFO L226 Difference]: Without dead ends: 13549 [2022-07-13 18:20:24,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:20:24,661 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 233 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:24,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 439 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:20:24,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13549 states. [2022-07-13 18:20:27,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13549 to 13506. [2022-07-13 18:20:27,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13506 states, 10515 states have (on average 1.2781740370898715) internal successors, (13440), 10598 states have internal predecessors, (13440), 1902 states have call successors, (1902), 1088 states have call predecessors, (1902), 1088 states have return successors, (1902), 1819 states have call predecessors, (1902), 1902 states have call successors, (1902) [2022-07-13 18:20:27,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13506 states to 13506 states and 17244 transitions. [2022-07-13 18:20:27,522 INFO L78 Accepts]: Start accepts. Automaton has 13506 states and 17244 transitions. Word has length 216 [2022-07-13 18:20:27,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:27,522 INFO L495 AbstractCegarLoop]: Abstraction has 13506 states and 17244 transitions. [2022-07-13 18:20:27,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 18:20:27,523 INFO L276 IsEmpty]: Start isEmpty. Operand 13506 states and 17244 transitions. [2022-07-13 18:20:27,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-13 18:20:27,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:27,529 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 18:20:27,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-13 18:20:27,530 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:27,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1538444979, now seen corresponding path program 1 times [2022-07-13 18:20:27,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:27,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250925532] [2022-07-13 18:20:27,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:27,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:20:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 18:20:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 18:20:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:20:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 18:20:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 18:20:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:20:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 18:20:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 18:20:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 18:20:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 18:20:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 18:20:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-13 18:20:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:20:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-13 18:20:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-13 18:20:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-13 18:20:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:20:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-13 18:20:27,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:27,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250925532] [2022-07-13 18:20:27,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250925532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:20:27,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:20:27,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:20:27,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711112736] [2022-07-13 18:20:27,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:20:27,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:20:27,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:27,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:20:27,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:20:27,700 INFO L87 Difference]: Start difference. First operand 13506 states and 17244 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 18:20:32,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:32,310 INFO L93 Difference]: Finished difference Result 35217 states and 45938 transitions. [2022-07-13 18:20:32,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 18:20:32,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 218 [2022-07-13 18:20:32,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:32,362 INFO L225 Difference]: With dead ends: 35217 [2022-07-13 18:20:32,363 INFO L226 Difference]: Without dead ends: 25564 [2022-07-13 18:20:32,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-07-13 18:20:32,379 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 606 mSDsluCounter, 2341 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:32,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 2907 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:20:32,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25564 states. [2022-07-13 18:20:35,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25564 to 16701. [2022-07-13 18:20:35,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16701 states, 12833 states have (on average 1.2702407854749473) internal successors, (16301), 12948 states have internal predecessors, (16301), 2459 states have call successors, (2459), 1408 states have call predecessors, (2459), 1408 states have return successors, (2459), 2344 states have call predecessors, (2459), 2459 states have call successors, (2459) [2022-07-13 18:20:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16701 states to 16701 states and 21219 transitions. [2022-07-13 18:20:35,282 INFO L78 Accepts]: Start accepts. Automaton has 16701 states and 21219 transitions. Word has length 218 [2022-07-13 18:20:35,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:35,282 INFO L495 AbstractCegarLoop]: Abstraction has 16701 states and 21219 transitions. [2022-07-13 18:20:35,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 18:20:35,282 INFO L276 IsEmpty]: Start isEmpty. Operand 16701 states and 21219 transitions. [2022-07-13 18:20:35,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-07-13 18:20:35,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:35,289 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-07-13 18:20:35,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-13 18:20:35,290 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:35,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:35,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1682687458, now seen corresponding path program 1 times [2022-07-13 18:20:35,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:35,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944781235] [2022-07-13 18:20:35,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:35,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:20:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:20:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:20:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:20:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:20:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:20:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:20:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 18:20:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 18:20:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 18:20:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 18:20:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-13 18:20:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-13 18:20:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 18:20:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-13 18:20:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-13 18:20:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-13 18:20:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-13 18:20:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 21 proven. 17 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-13 18:20:35,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:35,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944781235] [2022-07-13 18:20:35,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944781235] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:20:35,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523995498] [2022-07-13 18:20:35,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:35,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:35,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:20:35,420 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:20:35,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 18:20:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 18:20:35,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:20:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-13 18:20:35,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:20:35,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523995498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:20:35,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:20:35,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-13 18:20:35,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716814190] [2022-07-13 18:20:35,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:20:35,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:20:35,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:35,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:20:35,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-13 18:20:35,701 INFO L87 Difference]: Start difference. First operand 16701 states and 21219 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-13 18:20:40,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:40,132 INFO L93 Difference]: Finished difference Result 36091 states and 47040 transitions. [2022-07-13 18:20:40,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:20:40,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 219 [2022-07-13 18:20:40,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:40,199 INFO L225 Difference]: With dead ends: 36091 [2022-07-13 18:20:40,200 INFO L226 Difference]: Without dead ends: 20688 [2022-07-13 18:20:40,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-07-13 18:20:40,236 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 692 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:40,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 2094 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:20:40,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20688 states. [2022-07-13 18:20:43,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20688 to 16701. [2022-07-13 18:20:43,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16701 states, 12833 states have (on average 1.263539312709421) internal successors, (16215), 12948 states have internal predecessors, (16215), 2459 states have call successors, (2459), 1408 states have call predecessors, (2459), 1408 states have return successors, (2459), 2344 states have call predecessors, (2459), 2459 states have call successors, (2459) [2022-07-13 18:20:44,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16701 states to 16701 states and 21133 transitions. [2022-07-13 18:20:44,021 INFO L78 Accepts]: Start accepts. Automaton has 16701 states and 21133 transitions. Word has length 219 [2022-07-13 18:20:44,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:44,022 INFO L495 AbstractCegarLoop]: Abstraction has 16701 states and 21133 transitions. [2022-07-13 18:20:44,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-13 18:20:44,022 INFO L276 IsEmpty]: Start isEmpty. Operand 16701 states and 21133 transitions. [2022-07-13 18:20:44,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-13 18:20:44,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:44,032 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2022-07-13 18:20:44,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 18:20:44,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:44,245 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:44,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:44,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1246982382, now seen corresponding path program 1 times [2022-07-13 18:20:44,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:44,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495836927] [2022-07-13 18:20:44,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:44,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:20:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:20:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 18:20:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:20:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 18:20:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 18:20:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:20:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 18:20:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 18:20:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 18:20:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 18:20:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-13 18:20:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 18:20:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-13 18:20:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-13 18:20:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-13 18:20:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-13 18:20:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-13 18:20:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-13 18:20:44,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:44,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495836927] [2022-07-13 18:20:44,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495836927] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:20:44,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711602398] [2022-07-13 18:20:44,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:44,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:44,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:20:44,401 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:20:44,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 18:20:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:44,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 18:20:44,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:20:44,845 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 66 proven. 60 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 18:20:44,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:20:45,094 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-13 18:20:45,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711602398] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:20:45,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:20:45,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-07-13 18:20:45,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835308445] [2022-07-13 18:20:45,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:20:45,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 18:20:45,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:45,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 18:20:45,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:20:45,096 INFO L87 Difference]: Start difference. First operand 16701 states and 21133 transitions. Second operand has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 11 states have internal predecessors, (232), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-13 18:20:50,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:50,062 INFO L93 Difference]: Finished difference Result 32034 states and 40853 transitions. [2022-07-13 18:20:50,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 18:20:50,063 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 11 states have internal predecessors, (232), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) Word has length 224 [2022-07-13 18:20:50,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:50,113 INFO L225 Difference]: With dead ends: 32034 [2022-07-13 18:20:50,114 INFO L226 Difference]: Without dead ends: 19620 [2022-07-13 18:20:50,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 481 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-07-13 18:20:50,136 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 967 mSDsluCounter, 4412 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 5295 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:50,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 5295 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 18:20:50,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19620 states. [2022-07-13 18:20:53,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19620 to 16701. [2022-07-13 18:20:53,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16701 states, 12833 states have (on average 1.25956518351126) internal successors, (16164), 12948 states have internal predecessors, (16164), 2459 states have call successors, (2459), 1408 states have call predecessors, (2459), 1408 states have return successors, (2459), 2344 states have call predecessors, (2459), 2459 states have call successors, (2459) [2022-07-13 18:20:53,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16701 states to 16701 states and 21082 transitions. [2022-07-13 18:20:53,309 INFO L78 Accepts]: Start accepts. Automaton has 16701 states and 21082 transitions. Word has length 224 [2022-07-13 18:20:53,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:53,310 INFO L495 AbstractCegarLoop]: Abstraction has 16701 states and 21082 transitions. [2022-07-13 18:20:53,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 11 states have internal predecessors, (232), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-13 18:20:53,310 INFO L276 IsEmpty]: Start isEmpty. Operand 16701 states and 21082 transitions. [2022-07-13 18:20:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-13 18:20:53,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:53,317 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 18:20:53,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-13 18:20:53,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-07-13 18:20:53,518 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:53,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1098855206, now seen corresponding path program 1 times [2022-07-13 18:20:53,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:53,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099899433] [2022-07-13 18:20:53,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:53,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:20:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:20:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 18:20:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:20:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 18:20:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 18:20:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:20:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 18:20:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 18:20:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 18:20:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 18:20:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-13 18:20:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 18:20:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-13 18:20:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-13 18:20:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-13 18:20:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-13 18:20:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-13 18:20:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-13 18:20:53,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:53,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099899433] [2022-07-13 18:20:53,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099899433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:20:53,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:20:53,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:20:53,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196609100] [2022-07-13 18:20:53,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:20:53,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:20:53,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:53,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:20:53,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:20:53,649 INFO L87 Difference]: Start difference. First operand 16701 states and 21082 transitions. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 6 states have internal predecessors, (142), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 18:20:57,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:57,927 INFO L93 Difference]: Finished difference Result 32604 states and 42187 transitions. [2022-07-13 18:20:57,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:20:57,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 6 states have internal predecessors, (142), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 224 [2022-07-13 18:20:57,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:58,006 INFO L225 Difference]: With dead ends: 32604 [2022-07-13 18:20:58,007 INFO L226 Difference]: Without dead ends: 20684 [2022-07-13 18:20:58,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-13 18:20:58,030 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 704 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:58,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 2430 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:20:58,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20684 states. [2022-07-13 18:21:01,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20684 to 16692. [2022-07-13 18:21:01,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16692 states, 12824 states have (on average 1.2583437305053025) internal successors, (16137), 12939 states have internal predecessors, (16137), 2459 states have call successors, (2459), 1408 states have call predecessors, (2459), 1408 states have return successors, (2459), 2344 states have call predecessors, (2459), 2459 states have call successors, (2459) [2022-07-13 18:21:01,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16692 states to 16692 states and 21055 transitions. [2022-07-13 18:21:01,777 INFO L78 Accepts]: Start accepts. Automaton has 16692 states and 21055 transitions. Word has length 224 [2022-07-13 18:21:01,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:01,778 INFO L495 AbstractCegarLoop]: Abstraction has 16692 states and 21055 transitions. [2022-07-13 18:21:01,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 6 states have internal predecessors, (142), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 18:21:01,779 INFO L276 IsEmpty]: Start isEmpty. Operand 16692 states and 21055 transitions. [2022-07-13 18:21:01,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-13 18:21:01,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:01,788 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 18:21:01,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-13 18:21:01,788 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:01,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:01,789 INFO L85 PathProgramCache]: Analyzing trace with hash -972131164, now seen corresponding path program 1 times [2022-07-13 18:21:01,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:01,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046761968] [2022-07-13 18:21:01,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:01,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:01,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:21:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:01,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:21:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:01,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 18:21:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:01,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:21:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 18:21:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 18:21:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:21:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 18:21:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 18:21:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 18:21:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 18:21:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-13 18:21:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-13 18:21:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-13 18:21:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-13 18:21:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:21:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-13 18:21:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-13 18:21:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,069 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-13 18:21:02,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:02,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046761968] [2022-07-13 18:21:02,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046761968] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:21:02,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633622900] [2022-07-13 18:21:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:02,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:21:02,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:21:02,073 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:21:02,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 18:21:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:02,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 18:21:02,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:21:02,697 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 110 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 18:21:02,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:21:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-13 18:21:03,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633622900] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:21:03,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:21:03,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-07-13 18:21:03,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95508236] [2022-07-13 18:21:03,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:21:03,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 18:21:03,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:03,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 18:21:03,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-07-13 18:21:03,005 INFO L87 Difference]: Start difference. First operand 16692 states and 21055 transitions. Second operand has 19 states, 19 states have (on average 16.210526315789473) internal successors, (308), 19 states have internal predecessors, (308), 8 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 8 states have call predecessors, (46), 8 states have call successors, (46) [2022-07-13 18:21:15,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:15,553 INFO L93 Difference]: Finished difference Result 51985 states and 69876 transitions. [2022-07-13 18:21:15,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-13 18:21:15,554 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 16.210526315789473) internal successors, (308), 19 states have internal predecessors, (308), 8 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 8 states have call predecessors, (46), 8 states have call successors, (46) Word has length 225 [2022-07-13 18:21:15,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:15,662 INFO L225 Difference]: With dead ends: 51985 [2022-07-13 18:21:15,662 INFO L226 Difference]: Without dead ends: 36878 [2022-07-13 18:21:15,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 475 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=427, Invalid=1829, Unknown=0, NotChecked=0, Total=2256 [2022-07-13 18:21:15,692 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 4353 mSDsluCounter, 3869 mSDsCounter, 0 mSdLazyCounter, 4678 mSolverCounterSat, 1188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4377 SdHoareTripleChecker+Valid, 4545 SdHoareTripleChecker+Invalid, 5866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1188 IncrementalHoareTripleChecker+Valid, 4678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:15,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4377 Valid, 4545 Invalid, 5866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1188 Valid, 4678 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 18:21:15,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36878 states. [2022-07-13 18:21:20,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36878 to 20494. [2022-07-13 18:21:20,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20494 states, 15645 states have (on average 1.259316075423458) internal successors, (19702), 15789 states have internal predecessors, (19702), 3084 states have call successors, (3084), 1764 states have call predecessors, (3084), 1764 states have return successors, (3084), 2940 states have call predecessors, (3084), 3084 states have call successors, (3084) [2022-07-13 18:21:20,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20494 states to 20494 states and 25870 transitions. [2022-07-13 18:21:20,972 INFO L78 Accepts]: Start accepts. Automaton has 20494 states and 25870 transitions. Word has length 225 [2022-07-13 18:21:20,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:20,973 INFO L495 AbstractCegarLoop]: Abstraction has 20494 states and 25870 transitions. [2022-07-13 18:21:20,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.210526315789473) internal successors, (308), 19 states have internal predecessors, (308), 8 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 8 states have call predecessors, (46), 8 states have call successors, (46) [2022-07-13 18:21:20,973 INFO L276 IsEmpty]: Start isEmpty. Operand 20494 states and 25870 transitions. [2022-07-13 18:21:20,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-13 18:21:20,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:20,982 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:21:21,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 18:21:21,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-07-13 18:21:21,204 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:21,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:21,204 INFO L85 PathProgramCache]: Analyzing trace with hash 673830030, now seen corresponding path program 1 times [2022-07-13 18:21:21,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:21,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37536499] [2022-07-13 18:21:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:21,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:21:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:21:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 18:21:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 18:21:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 18:21:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 18:21:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:21:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 18:21:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 18:21:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 18:21:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 18:21:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 18:21:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-13 18:21:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-13 18:21:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-13 18:21:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-13 18:21:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-13 18:21:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-13 18:21:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-13 18:21:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 21 proven. 17 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-13 18:21:21,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:21,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37536499] [2022-07-13 18:21:21,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37536499] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:21:21,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761849269] [2022-07-13 18:21:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:21,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:21:21,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:21:21,475 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:21:21,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 18:21:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:21,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 18:21:21,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:21:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 96 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-13 18:21:21,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:21:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-13 18:21:22,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761849269] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:21:22,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:21:22,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-07-13 18:21:22,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616204185] [2022-07-13 18:21:22,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:21:22,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 18:21:22,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:22,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 18:21:22,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 18:21:22,172 INFO L87 Difference]: Start difference. First operand 20494 states and 25870 transitions. Second operand has 14 states, 14 states have (on average 20.357142857142858) internal successors, (285), 13 states have internal predecessors, (285), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2022-07-13 18:21:35,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:35,006 INFO L93 Difference]: Finished difference Result 54757 states and 72854 transitions. [2022-07-13 18:21:35,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-13 18:21:35,006 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.357142857142858) internal successors, (285), 13 states have internal predecessors, (285), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) Word has length 227 [2022-07-13 18:21:35,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:35,099 INFO L225 Difference]: With dead ends: 54757 [2022-07-13 18:21:35,100 INFO L226 Difference]: Without dead ends: 36114 [2022-07-13 18:21:35,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 496 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1298 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=749, Invalid=3411, Unknown=0, NotChecked=0, Total=4160 [2022-07-13 18:21:35,126 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 2609 mSDsluCounter, 5080 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 1260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2609 SdHoareTripleChecker+Valid, 5796 SdHoareTripleChecker+Invalid, 4064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1260 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:35,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2609 Valid, 5796 Invalid, 4064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1260 Valid, 2804 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 18:21:35,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36114 states. [2022-07-13 18:21:40,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36114 to 20911. [2022-07-13 18:21:40,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20911 states, 16018 states have (on average 1.2578349356973404) internal successors, (20148), 16161 states have internal predecessors, (20148), 3106 states have call successors, (3106), 1786 states have call predecessors, (3106), 1786 states have return successors, (3106), 2963 states have call predecessors, (3106), 3106 states have call successors, (3106) [2022-07-13 18:21:40,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20911 states to 20911 states and 26360 transitions. [2022-07-13 18:21:40,077 INFO L78 Accepts]: Start accepts. Automaton has 20911 states and 26360 transitions. Word has length 227 [2022-07-13 18:21:40,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:40,077 INFO L495 AbstractCegarLoop]: Abstraction has 20911 states and 26360 transitions. [2022-07-13 18:21:40,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.357142857142858) internal successors, (285), 13 states have internal predecessors, (285), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2022-07-13 18:21:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 20911 states and 26360 transitions. [2022-07-13 18:21:40,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-13 18:21:40,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:40,100 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 18:21:40,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 18:21:40,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-07-13 18:21:40,324 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:40,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:40,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1798558832, now seen corresponding path program 1 times [2022-07-13 18:21:40,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:40,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719562627] [2022-07-13 18:21:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:40,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:21:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 18:21:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 18:21:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:21:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 18:21:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 18:21:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 18:21:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 18:21:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 18:21:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 18:21:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 18:21:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-13 18:21:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-13 18:21:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-13 18:21:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-13 18:21:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-13 18:21:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:21:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-13 18:21:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-13 18:21:40,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:40,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719562627] [2022-07-13 18:21:40,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719562627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:40,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:40,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:21:40,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407293778] [2022-07-13 18:21:40,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:40,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:21:40,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:40,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:21:40,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:21:40,410 INFO L87 Difference]: Start difference. First operand 20911 states and 26360 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 18:21:46,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:46,821 INFO L93 Difference]: Finished difference Result 40196 states and 51193 transitions. [2022-07-13 18:21:46,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:21:46,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 226 [2022-07-13 18:21:46,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:46,983 INFO L225 Difference]: With dead ends: 40196 [2022-07-13 18:21:46,983 INFO L226 Difference]: Without dead ends: 24590 [2022-07-13 18:21:47,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:21:47,048 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 455 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:47,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1280 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:21:47,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24590 states.