./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d7923672572112c1e23e765d37ba0d9265e37954a51bbbf4393296aaafd9ce3e --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 07:06:34,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 07:06:34,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 07:06:34,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 07:06:34,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 07:06:34,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 07:06:34,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 07:06:34,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 07:06:34,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 07:06:34,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 07:06:34,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 07:06:34,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 07:06:34,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 07:06:34,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 07:06:34,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 07:06:34,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 07:06:34,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 07:06:34,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 07:06:34,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 07:06:34,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 07:06:34,643 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 07:06:34,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 07:06:34,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 07:06:34,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 07:06:34,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 07:06:34,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 07:06:34,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 07:06:34,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 07:06:34,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 07:06:34,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 07:06:34,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 07:06:34,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 07:06:34,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 07:06:34,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 07:06:34,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 07:06:34,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 07:06:34,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 07:06:34,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 07:06:34,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 07:06:34,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 07:06:34,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 07:06:34,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 07:06:34,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 07:06:34,696 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 07:06:34,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 07:06:34,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 07:06:34,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 07:06:34,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 07:06:34,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 07:06:34,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 07:06:34,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 07:06:34,699 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 07:06:34,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 07:06:34,700 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 07:06:34,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 07:06:34,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 07:06:34,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 07:06:34,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 07:06:34,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 07:06:34,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 07:06:34,701 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 07:06:34,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 07:06:34,702 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 07:06:34,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 07:06:34,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 07:06:34,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 07:06:34,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 07:06:34,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:06:34,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 07:06:34,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 07:06:34,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 07:06:34,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 07:06:34,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 07:06:34,704 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 07:06:34,704 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 07:06:34,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 07:06:34,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7923672572112c1e23e765d37ba0d9265e37954a51bbbf4393296aaafd9ce3e [2022-07-12 07:06:34,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 07:06:34,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 07:06:34,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 07:06:34,939 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 07:06:34,940 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 07:06:34,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-12 07:06:34,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2b4ccb0/39d2bdf3a1ce40acb45b9d3ea0346ce3/FLAG39a22a46f [2022-07-12 07:06:35,564 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 07:06:35,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-12 07:06:35,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2b4ccb0/39d2bdf3a1ce40acb45b9d3ea0346ce3/FLAG39a22a46f [2022-07-12 07:06:35,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2b4ccb0/39d2bdf3a1ce40acb45b9d3ea0346ce3 [2022-07-12 07:06:35,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 07:06:35,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 07:06:35,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 07:06:35,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 07:06:35,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 07:06:35,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:06:35" (1/1) ... [2022-07-12 07:06:35,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ea4f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:06:35, skipping insertion in model container [2022-07-12 07:06:35,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:06:35" (1/1) ... [2022-07-12 07:06:35,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 07:06:35,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 07:06:36,180 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9988,10001] [2022-07-12 07:06:36,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24517,24530] [2022-07-12 07:06:36,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:06:36,471 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 07:06:36,561 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9988,10001] [2022-07-12 07:06:36,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24517,24530] [2022-07-12 07:06:36,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:06:36,829 INFO L208 MainTranslator]: Completed translation [2022-07-12 07:06:36,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:06:36 WrapperNode [2022-07-12 07:06:36,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 07:06:36,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 07:06:36,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 07:06:36,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 07:06:36,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:06:36" (1/1) ... [2022-07-12 07:06:36,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:06:36" (1/1) ... [2022-07-12 07:06:36,993 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3378 [2022-07-12 07:06:36,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 07:06:36,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 07:06:36,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 07:06:36,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 07:06:37,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:06:36" (1/1) ... [2022-07-12 07:06:37,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:06:36" (1/1) ... [2022-07-12 07:06:37,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:06:36" (1/1) ... [2022-07-12 07:06:37,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:06:36" (1/1) ... [2022-07-12 07:06:37,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:06:36" (1/1) ... [2022-07-12 07:06:37,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:06:36" (1/1) ... [2022-07-12 07:06:37,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:06:36" (1/1) ... [2022-07-12 07:06:37,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 07:06:37,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 07:06:37,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 07:06:37,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 07:06:37,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:06:36" (1/1) ... [2022-07-12 07:06:37,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:06:37,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:06:37,145 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) [2022-07-12 07:06:37,160 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 [2022-07-12 07:06:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 07:06:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 07:06:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 07:06:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 07:06:37,454 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 07:06:37,455 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 07:06:38,937 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 07:06:38,949 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 07:06:38,949 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 07:06:38,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:06:38 BoogieIcfgContainer [2022-07-12 07:06:38,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 07:06:38,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 07:06:38,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 07:06:38,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 07:06:38,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 07:06:35" (1/3) ... [2022-07-12 07:06:38,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75cf0fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:06:38, skipping insertion in model container [2022-07-12 07:06:38,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:06:36" (2/3) ... [2022-07-12 07:06:38,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75cf0fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:06:38, skipping insertion in model container [2022-07-12 07:06:38,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:06:38" (3/3) ... [2022-07-12 07:06:38,961 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-12 07:06:38,974 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 07:06:38,975 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 07:06:39,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 07:06:39,035 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@12101754, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1622b299 [2022-07-12 07:06:39,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 07:06:39,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 702 states, 699 states have (on average 1.7854077253218885) internal successors, (1248), 701 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:39,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-12 07:06:39,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:39,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:39,061 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:39,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:39,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1557815088, now seen corresponding path program 1 times [2022-07-12 07:06:39,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:39,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704238134] [2022-07-12 07:06:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:39,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:39,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:39,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704238134] [2022-07-12 07:06:39,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704238134] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:39,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:39,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:06:39,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382322810] [2022-07-12 07:06:39,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:39,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:06:39,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:39,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:06:39,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:06:39,491 INFO L87 Difference]: Start difference. First operand has 702 states, 699 states have (on average 1.7854077253218885) internal successors, (1248), 701 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:39,659 INFO L93 Difference]: Finished difference Result 1063 states and 1849 transitions. [2022-07-12 07:06:39,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:06:39,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-12 07:06:39,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:39,695 INFO L225 Difference]: With dead ends: 1063 [2022-07-12 07:06:39,708 INFO L226 Difference]: Without dead ends: 842 [2022-07-12 07:06:39,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:06:39,716 INFO L413 NwaCegarLoop]: 1246 mSDtfsCounter, 630 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:39,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 2071 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:06:39,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-07-12 07:06:39,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 840. [2022-07-12 07:06:39,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.3723150357995226) internal successors, (1150), 839 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:39,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1150 transitions. [2022-07-12 07:06:39,824 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1150 transitions. Word has length 62 [2022-07-12 07:06:39,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:39,824 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1150 transitions. [2022-07-12 07:06:39,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:39,825 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1150 transitions. [2022-07-12 07:06:39,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 07:06:39,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:39,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:39,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 07:06:39,830 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:39,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:39,830 INFO L85 PathProgramCache]: Analyzing trace with hash 701475668, now seen corresponding path program 1 times [2022-07-12 07:06:39,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:39,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476355745] [2022-07-12 07:06:39,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:39,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:39,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:39,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:39,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476355745] [2022-07-12 07:06:39,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476355745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:39,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:39,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:06:39,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407862919] [2022-07-12 07:06:39,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:39,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:06:39,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:39,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:06:39,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:06:39,968 INFO L87 Difference]: Start difference. First operand 840 states and 1150 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:40,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:40,142 INFO L93 Difference]: Finished difference Result 1461 states and 2022 transitions. [2022-07-12 07:06:40,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:06:40,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-12 07:06:40,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:40,152 INFO L225 Difference]: With dead ends: 1461 [2022-07-12 07:06:40,152 INFO L226 Difference]: Without dead ends: 1221 [2022-07-12 07:06:40,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:06:40,159 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 548 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:40,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1679 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:06:40,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2022-07-12 07:06:40,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1217. [2022-07-12 07:06:40,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1215 states have (on average 1.359670781893004) internal successors, (1652), 1216 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:40,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1652 transitions. [2022-07-12 07:06:40,252 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1652 transitions. Word has length 63 [2022-07-12 07:06:40,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:40,252 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1652 transitions. [2022-07-12 07:06:40,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:40,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1652 transitions. [2022-07-12 07:06:40,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 07:06:40,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:40,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:40,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 07:06:40,261 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:40,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:40,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1921206290, now seen corresponding path program 1 times [2022-07-12 07:06:40,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:40,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817622120] [2022-07-12 07:06:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:40,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:40,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:40,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817622120] [2022-07-12 07:06:40,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817622120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:40,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:40,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:06:40,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102438192] [2022-07-12 07:06:40,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:40,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:06:40,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:40,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:06:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:06:40,349 INFO L87 Difference]: Start difference. First operand 1217 states and 1652 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:40,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:40,459 INFO L93 Difference]: Finished difference Result 2215 states and 3114 transitions. [2022-07-12 07:06:40,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:06:40,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-12 07:06:40,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:40,468 INFO L225 Difference]: With dead ends: 2215 [2022-07-12 07:06:40,468 INFO L226 Difference]: Without dead ends: 1684 [2022-07-12 07:06:40,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:06:40,476 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 493 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:40,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 1576 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:06:40,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2022-07-12 07:06:40,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1680. [2022-07-12 07:06:40,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1678 states have (on average 1.3790226460071513) internal successors, (2314), 1679 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:40,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2314 transitions. [2022-07-12 07:06:40,545 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2314 transitions. Word has length 63 [2022-07-12 07:06:40,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:40,545 INFO L495 AbstractCegarLoop]: Abstraction has 1680 states and 2314 transitions. [2022-07-12 07:06:40,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:40,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2314 transitions. [2022-07-12 07:06:40,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 07:06:40,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:40,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:40,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 07:06:40,549 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:40,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:40,550 INFO L85 PathProgramCache]: Analyzing trace with hash 951298247, now seen corresponding path program 1 times [2022-07-12 07:06:40,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:40,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701531589] [2022-07-12 07:06:40,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:40,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:40,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:40,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701531589] [2022-07-12 07:06:40,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701531589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:40,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:40,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:06:40,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223843635] [2022-07-12 07:06:40,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:40,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:06:40,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:40,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:06:40,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:06:40,702 INFO L87 Difference]: Start difference. First operand 1680 states and 2314 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:41,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:41,221 INFO L93 Difference]: Finished difference Result 3709 states and 5233 transitions. [2022-07-12 07:06:41,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:06:41,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-12 07:06:41,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:41,233 INFO L225 Difference]: With dead ends: 3709 [2022-07-12 07:06:41,233 INFO L226 Difference]: Without dead ends: 2253 [2022-07-12 07:06:41,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:06:41,239 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 2599 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2599 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:41,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2599 Valid, 574 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 07:06:41,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2022-07-12 07:06:41,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2251. [2022-07-12 07:06:41,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2249 states have (on average 1.4104046242774566) internal successors, (3172), 2250 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3172 transitions. [2022-07-12 07:06:41,405 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3172 transitions. Word has length 63 [2022-07-12 07:06:41,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:41,407 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3172 transitions. [2022-07-12 07:06:41,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:41,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3172 transitions. [2022-07-12 07:06:41,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 07:06:41,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:41,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:41,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 07:06:41,412 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:41,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:41,414 INFO L85 PathProgramCache]: Analyzing trace with hash -778566540, now seen corresponding path program 1 times [2022-07-12 07:06:41,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:41,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664080417] [2022-07-12 07:06:41,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:41,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:41,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:41,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664080417] [2022-07-12 07:06:41,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664080417] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:41,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:41,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:06:41,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904213934] [2022-07-12 07:06:41,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:41,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:06:41,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:41,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:06:41,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:06:41,504 INFO L87 Difference]: Start difference. First operand 2251 states and 3172 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:41,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:41,811 INFO L93 Difference]: Finished difference Result 4648 states and 6627 transitions. [2022-07-12 07:06:41,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:06:41,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-12 07:06:41,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:41,825 INFO L225 Difference]: With dead ends: 4648 [2022-07-12 07:06:41,825 INFO L226 Difference]: Without dead ends: 3138 [2022-07-12 07:06:41,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:06:41,831 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 578 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:41,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 1480 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:06:41,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2022-07-12 07:06:42,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 3128. [2022-07-12 07:06:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 3126 states have (on average 1.3909149072296865) internal successors, (4348), 3127 states have internal predecessors, (4348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:42,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 4348 transitions. [2022-07-12 07:06:42,059 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 4348 transitions. Word has length 64 [2022-07-12 07:06:42,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:42,062 INFO L495 AbstractCegarLoop]: Abstraction has 3128 states and 4348 transitions. [2022-07-12 07:06:42,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:42,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 4348 transitions. [2022-07-12 07:06:42,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 07:06:42,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:42,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:42,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 07:06:42,067 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:42,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:42,070 INFO L85 PathProgramCache]: Analyzing trace with hash -535437974, now seen corresponding path program 1 times [2022-07-12 07:06:42,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:42,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095574121] [2022-07-12 07:06:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:42,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:42,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:42,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095574121] [2022-07-12 07:06:42,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095574121] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:42,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:42,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:06:42,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98434148] [2022-07-12 07:06:42,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:42,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:06:42,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:42,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:06:42,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:06:42,173 INFO L87 Difference]: Start difference. First operand 3128 states and 4348 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:42,767 INFO L93 Difference]: Finished difference Result 6737 states and 9460 transitions. [2022-07-12 07:06:42,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:06:42,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-12 07:06:42,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:42,782 INFO L225 Difference]: With dead ends: 6737 [2022-07-12 07:06:42,783 INFO L226 Difference]: Without dead ends: 3943 [2022-07-12 07:06:42,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:06:42,788 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 2267 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:42,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2267 Valid, 521 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:06:42,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2022-07-12 07:06:43,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3927. [2022-07-12 07:06:43,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3927 states, 3925 states have (on average 1.3946496815286624) internal successors, (5474), 3926 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 5474 transitions. [2022-07-12 07:06:43,051 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 5474 transitions. Word has length 65 [2022-07-12 07:06:43,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:43,051 INFO L495 AbstractCegarLoop]: Abstraction has 3927 states and 5474 transitions. [2022-07-12 07:06:43,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:43,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 5474 transitions. [2022-07-12 07:06:43,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 07:06:43,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:43,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:43,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 07:06:43,057 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:43,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:43,058 INFO L85 PathProgramCache]: Analyzing trace with hash -881934793, now seen corresponding path program 1 times [2022-07-12 07:06:43,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:43,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332366431] [2022-07-12 07:06:43,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:43,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:43,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:43,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332366431] [2022-07-12 07:06:43,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332366431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:43,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:43,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:06:43,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102855584] [2022-07-12 07:06:43,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:43,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:06:43,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:43,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:06:43,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:06:43,114 INFO L87 Difference]: Start difference. First operand 3927 states and 5474 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:43,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:43,748 INFO L93 Difference]: Finished difference Result 8987 states and 12601 transitions. [2022-07-12 07:06:43,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:06:43,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-12 07:06:43,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:43,769 INFO L225 Difference]: With dead ends: 8987 [2022-07-12 07:06:43,770 INFO L226 Difference]: Without dead ends: 5345 [2022-07-12 07:06:43,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:06:43,779 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 2339 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2339 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:43,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2339 Valid, 529 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:06:43,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2022-07-12 07:06:44,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 3927. [2022-07-12 07:06:44,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3927 states, 3925 states have (on average 1.3898089171974521) internal successors, (5455), 3926 states have internal predecessors, (5455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 5455 transitions. [2022-07-12 07:06:44,102 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 5455 transitions. Word has length 66 [2022-07-12 07:06:44,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:44,103 INFO L495 AbstractCegarLoop]: Abstraction has 3927 states and 5455 transitions. [2022-07-12 07:06:44,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 5455 transitions. [2022-07-12 07:06:44,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 07:06:44,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:44,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:44,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 07:06:44,108 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:44,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:44,109 INFO L85 PathProgramCache]: Analyzing trace with hash -741572489, now seen corresponding path program 1 times [2022-07-12 07:06:44,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:44,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941268731] [2022-07-12 07:06:44,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:44,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:44,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:44,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941268731] [2022-07-12 07:06:44,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941268731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:44,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:44,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:06:44,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897133973] [2022-07-12 07:06:44,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:44,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:06:44,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:44,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:06:44,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:06:44,233 INFO L87 Difference]: Start difference. First operand 3927 states and 5455 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:45,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:45,817 INFO L93 Difference]: Finished difference Result 13399 states and 19176 transitions. [2022-07-12 07:06:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 07:06:45,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-12 07:06:45,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:45,864 INFO L225 Difference]: With dead ends: 13399 [2022-07-12 07:06:45,864 INFO L226 Difference]: Without dead ends: 12233 [2022-07-12 07:06:45,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:06:45,873 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 4771 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4771 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:45,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4771 Valid, 1026 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 07:06:45,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12233 states. [2022-07-12 07:06:46,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12233 to 3951. [2022-07-12 07:06:46,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3949 states have (on average 1.3894656875158269) internal successors, (5487), 3950 states have internal predecessors, (5487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 5487 transitions. [2022-07-12 07:06:46,292 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 5487 transitions. Word has length 66 [2022-07-12 07:06:46,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:46,293 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 5487 transitions. [2022-07-12 07:06:46,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 5487 transitions. [2022-07-12 07:06:46,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 07:06:46,298 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:46,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:46,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 07:06:46,299 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:46,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:46,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1492647215, now seen corresponding path program 1 times [2022-07-12 07:06:46,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:46,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034405280] [2022-07-12 07:06:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:46,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:46,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:46,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034405280] [2022-07-12 07:06:46,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034405280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:46,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:46,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:06:46,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236574509] [2022-07-12 07:06:46,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:46,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:06:46,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:46,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:06:46,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:06:46,371 INFO L87 Difference]: Start difference. First operand 3951 states and 5487 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:47,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:47,970 INFO L93 Difference]: Finished difference Result 12281 states and 17342 transitions. [2022-07-12 07:06:47,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 07:06:47,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-12 07:06:47,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:47,997 INFO L225 Difference]: With dead ends: 12281 [2022-07-12 07:06:47,997 INFO L226 Difference]: Without dead ends: 10904 [2022-07-12 07:06:48,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:06:48,004 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 4122 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4122 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:48,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4122 Valid, 938 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 07:06:48,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10904 states. [2022-07-12 07:06:48,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10904 to 3979. [2022-07-12 07:06:48,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3979 states, 3977 states have (on average 1.3887352275584612) internal successors, (5523), 3978 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:48,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5523 transitions. [2022-07-12 07:06:48,427 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5523 transitions. Word has length 67 [2022-07-12 07:06:48,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:48,428 INFO L495 AbstractCegarLoop]: Abstraction has 3979 states and 5523 transitions. [2022-07-12 07:06:48,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:48,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5523 transitions. [2022-07-12 07:06:48,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 07:06:48,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:48,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:48,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 07:06:48,435 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:48,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:48,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1629228246, now seen corresponding path program 1 times [2022-07-12 07:06:48,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:48,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300546890] [2022-07-12 07:06:48,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:48,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:48,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:48,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:48,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300546890] [2022-07-12 07:06:48,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300546890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:48,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:48,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:06:48,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288724424] [2022-07-12 07:06:48,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:48,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:06:48,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:48,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:06:48,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:06:48,491 INFO L87 Difference]: Start difference. First operand 3979 states and 5523 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:49,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:49,275 INFO L93 Difference]: Finished difference Result 8837 states and 12282 transitions. [2022-07-12 07:06:49,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:06:49,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-12 07:06:49,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:49,285 INFO L225 Difference]: With dead ends: 8837 [2022-07-12 07:06:49,286 INFO L226 Difference]: Without dead ends: 5166 [2022-07-12 07:06:49,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:06:49,292 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 2057 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2057 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:49,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2057 Valid, 477 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:06:49,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2022-07-12 07:06:49,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 5144. [2022-07-12 07:06:49,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5144 states, 5142 states have (on average 1.3753403345001944) internal successors, (7072), 5143 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:49,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5144 states to 5144 states and 7072 transitions. [2022-07-12 07:06:49,953 INFO L78 Accepts]: Start accepts. Automaton has 5144 states and 7072 transitions. Word has length 67 [2022-07-12 07:06:49,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:49,954 INFO L495 AbstractCegarLoop]: Abstraction has 5144 states and 7072 transitions. [2022-07-12 07:06:49,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:49,954 INFO L276 IsEmpty]: Start isEmpty. Operand 5144 states and 7072 transitions. [2022-07-12 07:06:49,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 07:06:49,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:49,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:49,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 07:06:49,961 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:49,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:49,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1569192756, now seen corresponding path program 1 times [2022-07-12 07:06:49,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:49,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34167034] [2022-07-12 07:06:49,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:49,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:50,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:50,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34167034] [2022-07-12 07:06:50,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34167034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:50,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:50,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:06:50,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416769034] [2022-07-12 07:06:50,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:50,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:06:50,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:50,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:06:50,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:06:50,033 INFO L87 Difference]: Start difference. First operand 5144 states and 7072 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:52,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:52,563 INFO L93 Difference]: Finished difference Result 21648 states and 30629 transitions. [2022-07-12 07:06:52,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 07:06:52,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-12 07:06:52,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:52,610 INFO L225 Difference]: With dead ends: 21648 [2022-07-12 07:06:52,610 INFO L226 Difference]: Without dead ends: 19448 [2022-07-12 07:06:52,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:06:52,624 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 4207 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4207 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:52,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4207 Valid, 1010 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 07:06:52,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19448 states. [2022-07-12 07:06:53,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19448 to 5241. [2022-07-12 07:06:53,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5241 states, 5239 states have (on average 1.3744989501813323) internal successors, (7201), 5240 states have internal predecessors, (7201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:53,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 7201 transitions. [2022-07-12 07:06:53,468 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 7201 transitions. Word has length 68 [2022-07-12 07:06:53,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:53,469 INFO L495 AbstractCegarLoop]: Abstraction has 5241 states and 7201 transitions. [2022-07-12 07:06:53,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:53,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 7201 transitions. [2022-07-12 07:06:53,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 07:06:53,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:53,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:53,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 07:06:53,477 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:53,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:53,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1812754967, now seen corresponding path program 1 times [2022-07-12 07:06:53,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:53,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554362350] [2022-07-12 07:06:53,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:53,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:53,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:53,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554362350] [2022-07-12 07:06:53,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554362350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:53,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:53,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:06:53,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789094275] [2022-07-12 07:06:53,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:53,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:06:53,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:53,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:06:53,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:06:53,632 INFO L87 Difference]: Start difference. First operand 5241 states and 7201 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:56,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:56,092 INFO L93 Difference]: Finished difference Result 15959 states and 22582 transitions. [2022-07-12 07:06:56,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:06:56,093 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-12 07:06:56,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:56,119 INFO L225 Difference]: With dead ends: 15959 [2022-07-12 07:06:56,119 INFO L226 Difference]: Without dead ends: 12925 [2022-07-12 07:06:56,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:06:56,128 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 3390 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:56,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3390 Valid, 1916 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 07:06:56,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12925 states. [2022-07-12 07:06:56,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12925 to 5237. [2022-07-12 07:06:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5235 states have (on average 1.3740210124164278) internal successors, (7193), 5236 states have internal predecessors, (7193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:56,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 7193 transitions. [2022-07-12 07:06:56,986 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 7193 transitions. Word has length 69 [2022-07-12 07:06:56,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:56,986 INFO L495 AbstractCegarLoop]: Abstraction has 5237 states and 7193 transitions. [2022-07-12 07:06:56,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:56,987 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 7193 transitions. [2022-07-12 07:06:56,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 07:06:56,993 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:56,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:56,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 07:06:56,993 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:56,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:56,994 INFO L85 PathProgramCache]: Analyzing trace with hash -445002902, now seen corresponding path program 1 times [2022-07-12 07:06:56,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:56,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086047136] [2022-07-12 07:06:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:56,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:57,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:57,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:57,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086047136] [2022-07-12 07:06:57,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086047136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:57,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:57,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:06:57,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569919079] [2022-07-12 07:06:57,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:57,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:06:57,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:57,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:06:57,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:06:57,149 INFO L87 Difference]: Start difference. First operand 5237 states and 7193 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:00,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:00,497 INFO L93 Difference]: Finished difference Result 18098 states and 25263 transitions. [2022-07-12 07:07:00,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 07:07:00,498 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-12 07:07:00,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:00,525 INFO L225 Difference]: With dead ends: 18098 [2022-07-12 07:07:00,525 INFO L226 Difference]: Without dead ends: 16480 [2022-07-12 07:07:00,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2022-07-12 07:07:00,534 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 3713 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3713 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:00,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3713 Valid, 2686 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 07:07:00,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16480 states. [2022-07-12 07:07:01,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16480 to 5237. [2022-07-12 07:07:01,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5235 states have (on average 1.3736389684813755) internal successors, (7191), 5236 states have internal predecessors, (7191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:01,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 7191 transitions. [2022-07-12 07:07:01,493 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 7191 transitions. Word has length 69 [2022-07-12 07:07:01,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:07:01,493 INFO L495 AbstractCegarLoop]: Abstraction has 5237 states and 7191 transitions. [2022-07-12 07:07:01,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:01,494 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 7191 transitions. [2022-07-12 07:07:01,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 07:07:01,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:07:01,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:07:01,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 07:07:01,501 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:07:01,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:07:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1293297930, now seen corresponding path program 1 times [2022-07-12 07:07:01,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:07:01,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293761182] [2022-07-12 07:07:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:07:01,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:07:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:07:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:07:01,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:07:01,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293761182] [2022-07-12 07:07:01,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293761182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:07:01,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:07:01,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:07:01,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584263597] [2022-07-12 07:07:01,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:07:01,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:07:01,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:07:01,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:07:01,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:07:01,620 INFO L87 Difference]: Start difference. First operand 5237 states and 7191 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:04,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:04,443 INFO L93 Difference]: Finished difference Result 16061 states and 22733 transitions. [2022-07-12 07:07:04,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:07:04,443 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-12 07:07:04,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:04,461 INFO L225 Difference]: With dead ends: 16061 [2022-07-12 07:07:04,462 INFO L226 Difference]: Without dead ends: 12985 [2022-07-12 07:07:04,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:07:04,468 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 3483 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3483 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:04,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3483 Valid, 1823 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 07:07:04,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12985 states. [2022-07-12 07:07:05,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12985 to 5213. [2022-07-12 07:07:05,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5211 states have (on average 1.3724812895797351) internal successors, (7152), 5212 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 7152 transitions. [2022-07-12 07:07:05,195 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 7152 transitions. Word has length 70 [2022-07-12 07:07:05,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:07:05,196 INFO L495 AbstractCegarLoop]: Abstraction has 5213 states and 7152 transitions. [2022-07-12 07:07:05,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:05,196 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 7152 transitions. [2022-07-12 07:07:05,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 07:07:05,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:07:05,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:07:05,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 07:07:05,203 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:07:05,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:07:05,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1552924457, now seen corresponding path program 1 times [2022-07-12 07:07:05,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:07:05,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683553502] [2022-07-12 07:07:05,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:07:05,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:07:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:07:05,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:07:05,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:07:05,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683553502] [2022-07-12 07:07:05,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683553502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:07:05,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:07:05,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 07:07:05,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965104291] [2022-07-12 07:07:05,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:07:05,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 07:07:05,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:07:05,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 07:07:05,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:07:05,486 INFO L87 Difference]: Start difference. First operand 5213 states and 7152 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:11,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:11,905 INFO L93 Difference]: Finished difference Result 30705 states and 43716 transitions. [2022-07-12 07:07:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 07:07:11,906 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-12 07:07:11,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:11,943 INFO L225 Difference]: With dead ends: 30705 [2022-07-12 07:07:11,943 INFO L226 Difference]: Without dead ends: 27473 [2022-07-12 07:07:11,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-07-12 07:07:11,956 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 4613 mSDsluCounter, 4619 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4613 SdHoareTripleChecker+Valid, 5471 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:11,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4613 Valid, 5471 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 07:07:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27473 states. [2022-07-12 07:07:13,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27473 to 5003. [2022-07-12 07:07:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5003 states, 5001 states have (on average 1.3753249350129975) internal successors, (6878), 5002 states have internal predecessors, (6878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:13,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5003 states to 5003 states and 6878 transitions. [2022-07-12 07:07:13,064 INFO L78 Accepts]: Start accepts. Automaton has 5003 states and 6878 transitions. Word has length 70 [2022-07-12 07:07:13,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:07:13,064 INFO L495 AbstractCegarLoop]: Abstraction has 5003 states and 6878 transitions. [2022-07-12 07:07:13,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:13,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5003 states and 6878 transitions. [2022-07-12 07:07:13,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 07:07:13,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:07:13,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:07:13,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 07:07:13,072 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:07:13,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:07:13,073 INFO L85 PathProgramCache]: Analyzing trace with hash -757708310, now seen corresponding path program 1 times [2022-07-12 07:07:13,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:07:13,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964302734] [2022-07-12 07:07:13,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:07:13,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:07:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:07:13,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:07:13,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:07:13,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964302734] [2022-07-12 07:07:13,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964302734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:07:13,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:07:13,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:07:13,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886812977] [2022-07-12 07:07:13,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:07:13,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:07:13,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:07:13,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:07:13,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:07:13,141 INFO L87 Difference]: Start difference. First operand 5003 states and 6878 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:18,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:18,003 INFO L93 Difference]: Finished difference Result 18671 states and 26383 transitions. [2022-07-12 07:07:18,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 07:07:18,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-12 07:07:18,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:18,023 INFO L225 Difference]: With dead ends: 18671 [2022-07-12 07:07:18,023 INFO L226 Difference]: Without dead ends: 16635 [2022-07-12 07:07:18,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:07:18,031 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 2836 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:18,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2836 Valid, 1085 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 07:07:18,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16635 states. [2022-07-12 07:07:19,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16635 to 5074. [2022-07-12 07:07:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5074 states, 5072 states have (on average 1.3755914826498423) internal successors, (6977), 5073 states have internal predecessors, (6977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:19,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5074 states to 5074 states and 6977 transitions. [2022-07-12 07:07:19,145 INFO L78 Accepts]: Start accepts. Automaton has 5074 states and 6977 transitions. Word has length 70 [2022-07-12 07:07:19,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:07:19,145 INFO L495 AbstractCegarLoop]: Abstraction has 5074 states and 6977 transitions. [2022-07-12 07:07:19,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:19,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5074 states and 6977 transitions. [2022-07-12 07:07:19,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 07:07:19,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:07:19,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:07:19,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 07:07:19,152 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:07:19,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:07:19,152 INFO L85 PathProgramCache]: Analyzing trace with hash 55096187, now seen corresponding path program 1 times [2022-07-12 07:07:19,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:07:19,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225013244] [2022-07-12 07:07:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:07:19,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:07:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:07:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:07:19,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:07:19,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225013244] [2022-07-12 07:07:19,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225013244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:07:19,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:07:19,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 07:07:19,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71327784] [2022-07-12 07:07:19,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:07:19,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 07:07:19,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:07:19,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 07:07:19,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:07:19,430 INFO L87 Difference]: Start difference. First operand 5074 states and 6977 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:30,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:30,177 INFO L93 Difference]: Finished difference Result 35132 states and 50360 transitions. [2022-07-12 07:07:30,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-12 07:07:30,178 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-12 07:07:30,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:30,223 INFO L225 Difference]: With dead ends: 35132 [2022-07-12 07:07:30,223 INFO L226 Difference]: Without dead ends: 32100 [2022-07-12 07:07:30,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2022-07-12 07:07:30,234 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 4436 mSDsluCounter, 7260 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4436 SdHoareTripleChecker+Valid, 7965 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:30,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4436 Valid, 7965 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 07:07:30,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32100 states. [2022-07-12 07:07:31,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32100 to 5068. [2022-07-12 07:07:31,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5068 states, 5066 states have (on average 1.3748519542045006) internal successors, (6965), 5067 states have internal predecessors, (6965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:31,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5068 states to 5068 states and 6965 transitions. [2022-07-12 07:07:31,644 INFO L78 Accepts]: Start accepts. Automaton has 5068 states and 6965 transitions. Word has length 70 [2022-07-12 07:07:31,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:07:31,644 INFO L495 AbstractCegarLoop]: Abstraction has 5068 states and 6965 transitions. [2022-07-12 07:07:31,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:31,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5068 states and 6965 transitions. [2022-07-12 07:07:31,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 07:07:31,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:07:31,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:07:31,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 07:07:31,651 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:07:31,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:07:31,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1421654202, now seen corresponding path program 1 times [2022-07-12 07:07:31,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:07:31,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020598557] [2022-07-12 07:07:31,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:07:31,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:07:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:07:31,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:07:31,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:07:31,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020598557] [2022-07-12 07:07:31,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020598557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:07:31,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:07:31,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 07:07:31,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049592575] [2022-07-12 07:07:31,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:07:31,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 07:07:31,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:07:31,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 07:07:31,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:07:31,967 INFO L87 Difference]: Start difference. First operand 5068 states and 6965 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:41,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:41,407 INFO L93 Difference]: Finished difference Result 27397 states and 39092 transitions. [2022-07-12 07:07:41,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 07:07:41,407 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-07-12 07:07:41,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:41,439 INFO L225 Difference]: With dead ends: 27397 [2022-07-12 07:07:41,439 INFO L226 Difference]: Without dead ends: 24286 [2022-07-12 07:07:41,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2022-07-12 07:07:41,448 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 3685 mSDsluCounter, 5567 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3685 SdHoareTripleChecker+Valid, 6445 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:41,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3685 Valid, 6445 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 07:07:41,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24286 states. [2022-07-12 07:07:42,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24286 to 4983. [2022-07-12 07:07:42,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4983 states, 4982 states have (on average 1.372340425531915) internal successors, (6837), 4982 states have internal predecessors, (6837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:42,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4983 states to 4983 states and 6837 transitions. [2022-07-12 07:07:42,968 INFO L78 Accepts]: Start accepts. Automaton has 4983 states and 6837 transitions. Word has length 71 [2022-07-12 07:07:42,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:07:42,969 INFO L495 AbstractCegarLoop]: Abstraction has 4983 states and 6837 transitions. [2022-07-12 07:07:42,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:42,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4983 states and 6837 transitions. [2022-07-12 07:07:42,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 07:07:42,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:07:42,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:07:42,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 07:07:42,974 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:07:42,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:07:42,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1130829185, now seen corresponding path program 1 times [2022-07-12 07:07:42,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:07:42,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943160131] [2022-07-12 07:07:42,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:07:42,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:07:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:07:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:07:43,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:07:43,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943160131] [2022-07-12 07:07:43,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943160131] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:07:43,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:07:43,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:07:43,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531668525] [2022-07-12 07:07:43,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:07:43,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:07:43,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:07:43,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:07:43,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:07:43,045 INFO L87 Difference]: Start difference. First operand 4983 states and 6837 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:50,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:50,646 INFO L93 Difference]: Finished difference Result 21166 states and 30003 transitions. [2022-07-12 07:07:50,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 07:07:50,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-07-12 07:07:50,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:50,668 INFO L225 Difference]: With dead ends: 21166 [2022-07-12 07:07:50,669 INFO L226 Difference]: Without dead ends: 19084 [2022-07-12 07:07:50,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:07:50,673 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 2876 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2876 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:50,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2876 Valid, 1050 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 07:07:50,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19084 states. [2022-07-12 07:07:52,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19084 to 5013. [2022-07-12 07:07:52,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5012 states have (on average 1.3721069433359936) internal successors, (6877), 5012 states have internal predecessors, (6877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:52,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 6877 transitions. [2022-07-12 07:07:52,196 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 6877 transitions. Word has length 71 [2022-07-12 07:07:52,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:07:52,196 INFO L495 AbstractCegarLoop]: Abstraction has 5013 states and 6877 transitions. [2022-07-12 07:07:52,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:52,196 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 6877 transitions. [2022-07-12 07:07:52,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 07:07:52,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:07:52,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:07:52,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 07:07:52,203 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:07:52,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:07:52,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1491852773, now seen corresponding path program 1 times [2022-07-12 07:07:52,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:07:52,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130315512] [2022-07-12 07:07:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:07:52,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:07:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:07:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:07:52,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:07:52,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130315512] [2022-07-12 07:07:52,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130315512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:07:52,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:07:52,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:07:52,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810642686] [2022-07-12 07:07:52,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:07:52,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:07:52,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:07:52,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:07:52,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:07:52,375 INFO L87 Difference]: Start difference. First operand 5013 states and 6877 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:00,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:00,264 INFO L93 Difference]: Finished difference Result 21393 states and 30303 transitions. [2022-07-12 07:08:00,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 07:08:00,265 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-07-12 07:08:00,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:00,288 INFO L225 Difference]: With dead ends: 21393 [2022-07-12 07:08:00,288 INFO L226 Difference]: Without dead ends: 18105 [2022-07-12 07:08:00,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2022-07-12 07:08:00,296 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 3268 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3268 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:00,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3268 Valid, 2804 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 07:08:00,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18105 states. [2022-07-12 07:08:01,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18105 to 4876. [2022-07-12 07:08:01,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4876 states, 4875 states have (on average 1.3721025641025641) internal successors, (6689), 4875 states have internal predecessors, (6689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:01,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4876 states to 4876 states and 6689 transitions. [2022-07-12 07:08:01,943 INFO L78 Accepts]: Start accepts. Automaton has 4876 states and 6689 transitions. Word has length 71 [2022-07-12 07:08:01,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:01,943 INFO L495 AbstractCegarLoop]: Abstraction has 4876 states and 6689 transitions. [2022-07-12 07:08:01,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:01,943 INFO L276 IsEmpty]: Start isEmpty. Operand 4876 states and 6689 transitions. [2022-07-12 07:08:01,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 07:08:01,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:01,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:01,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 07:08:01,947 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:01,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:01,947 INFO L85 PathProgramCache]: Analyzing trace with hash -697354618, now seen corresponding path program 1 times [2022-07-12 07:08:01,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:01,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908665898] [2022-07-12 07:08:01,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:01,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:02,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:02,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908665898] [2022-07-12 07:08:02,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908665898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:02,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:02,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 07:08:02,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830864743] [2022-07-12 07:08:02,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:02,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 07:08:02,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:02,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 07:08:02,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:08:02,262 INFO L87 Difference]: Start difference. First operand 4876 states and 6689 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:18,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:18,246 INFO L93 Difference]: Finished difference Result 33561 states and 47671 transitions. [2022-07-12 07:08:18,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 07:08:18,247 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-07-12 07:08:18,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:18,294 INFO L225 Difference]: With dead ends: 33561 [2022-07-12 07:08:18,294 INFO L226 Difference]: Without dead ends: 31519 [2022-07-12 07:08:18,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2022-07-12 07:08:18,307 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 4905 mSDsluCounter, 3588 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4905 SdHoareTripleChecker+Valid, 4269 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:18,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4905 Valid, 4269 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 07:08:18,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31519 states. [2022-07-12 07:08:20,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31519 to 4867. [2022-07-12 07:08:20,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4867 states, 4866 states have (on average 1.3721742704480067) internal successors, (6677), 4866 states have internal predecessors, (6677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:20,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4867 states to 4867 states and 6677 transitions. [2022-07-12 07:08:20,314 INFO L78 Accepts]: Start accepts. Automaton has 4867 states and 6677 transitions. Word has length 72 [2022-07-12 07:08:20,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:20,315 INFO L495 AbstractCegarLoop]: Abstraction has 4867 states and 6677 transitions. [2022-07-12 07:08:20,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:20,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4867 states and 6677 transitions. [2022-07-12 07:08:20,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 07:08:20,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:20,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:20,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 07:08:20,319 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:20,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:20,319 INFO L85 PathProgramCache]: Analyzing trace with hash -967274292, now seen corresponding path program 1 times [2022-07-12 07:08:20,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:20,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090727627] [2022-07-12 07:08:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:20,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:20,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:20,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090727627] [2022-07-12 07:08:20,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090727627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:20,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:20,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:08:20,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980642955] [2022-07-12 07:08:20,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:20,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:08:20,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:20,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:08:20,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:08:20,364 INFO L87 Difference]: Start difference. First operand 4867 states and 6677 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:22,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:22,262 INFO L93 Difference]: Finished difference Result 7236 states and 10025 transitions. [2022-07-12 07:08:22,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:08:22,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-07-12 07:08:22,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:22,270 INFO L225 Difference]: With dead ends: 7236 [2022-07-12 07:08:22,270 INFO L226 Difference]: Without dead ends: 4869 [2022-07-12 07:08:22,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:08:22,280 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 328 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:22,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1226 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:08:22,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2022-07-12 07:08:24,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4867. [2022-07-12 07:08:24,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4867 states, 4866 states have (on average 1.3612823674475956) internal successors, (6624), 4866 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:24,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4867 states to 4867 states and 6624 transitions. [2022-07-12 07:08:24,130 INFO L78 Accepts]: Start accepts. Automaton has 4867 states and 6624 transitions. Word has length 73 [2022-07-12 07:08:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:24,130 INFO L495 AbstractCegarLoop]: Abstraction has 4867 states and 6624 transitions. [2022-07-12 07:08:24,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:24,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4867 states and 6624 transitions. [2022-07-12 07:08:24,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 07:08:24,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:24,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:24,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 07:08:24,134 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:24,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:24,134 INFO L85 PathProgramCache]: Analyzing trace with hash -700390589, now seen corresponding path program 1 times [2022-07-12 07:08:24,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:24,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652960345] [2022-07-12 07:08:24,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:24,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:24,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:24,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652960345] [2022-07-12 07:08:24,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652960345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:24,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:24,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:08:24,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226532176] [2022-07-12 07:08:24,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:24,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:08:24,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:24,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:08:24,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:08:24,169 INFO L87 Difference]: Start difference. First operand 4867 states and 6624 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:27,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:27,149 INFO L93 Difference]: Finished difference Result 9616 states and 13274 transitions. [2022-07-12 07:08:27,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:08:27,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-07-12 07:08:27,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:27,157 INFO L225 Difference]: With dead ends: 9616 [2022-07-12 07:08:27,157 INFO L226 Difference]: Without dead ends: 6868 [2022-07-12 07:08:27,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:08:27,161 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 403 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:27,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 580 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:08:27,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6868 states. [2022-07-12 07:08:30,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6868 to 6848. [2022-07-12 07:08:30,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6848 states, 6847 states have (on average 1.383379582298817) internal successors, (9472), 6847 states have internal predecessors, (9472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6848 states to 6848 states and 9472 transitions. [2022-07-12 07:08:30,093 INFO L78 Accepts]: Start accepts. Automaton has 6848 states and 9472 transitions. Word has length 74 [2022-07-12 07:08:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:30,093 INFO L495 AbstractCegarLoop]: Abstraction has 6848 states and 9472 transitions. [2022-07-12 07:08:30,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:30,094 INFO L276 IsEmpty]: Start isEmpty. Operand 6848 states and 9472 transitions. [2022-07-12 07:08:30,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 07:08:30,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:30,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:30,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 07:08:30,098 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:30,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:30,098 INFO L85 PathProgramCache]: Analyzing trace with hash -976483284, now seen corresponding path program 1 times [2022-07-12 07:08:30,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:30,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011782971] [2022-07-12 07:08:30,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:30,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:30,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:30,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011782971] [2022-07-12 07:08:30,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011782971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:30,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:30,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:08:30,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753213939] [2022-07-12 07:08:30,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:30,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:08:30,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:30,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:08:30,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:08:30,140 INFO L87 Difference]: Start difference. First operand 6848 states and 9472 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:33,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:33,912 INFO L93 Difference]: Finished difference Result 12654 states and 17647 transitions. [2022-07-12 07:08:33,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:08:33,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-07-12 07:08:33,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:33,922 INFO L225 Difference]: With dead ends: 12654 [2022-07-12 07:08:33,922 INFO L226 Difference]: Without dead ends: 8428 [2022-07-12 07:08:33,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:08:33,927 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 401 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:33,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 676 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:08:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8428 states. [2022-07-12 07:08:36,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8428 to 6260. [2022-07-12 07:08:36,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6260 states, 6259 states have (on average 1.3904777120945837) internal successors, (8703), 6259 states have internal predecessors, (8703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:36,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6260 states to 6260 states and 8703 transitions. [2022-07-12 07:08:36,830 INFO L78 Accepts]: Start accepts. Automaton has 6260 states and 8703 transitions. Word has length 74 [2022-07-12 07:08:36,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:36,830 INFO L495 AbstractCegarLoop]: Abstraction has 6260 states and 8703 transitions. [2022-07-12 07:08:36,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:36,831 INFO L276 IsEmpty]: Start isEmpty. Operand 6260 states and 8703 transitions. [2022-07-12 07:08:36,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 07:08:36,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:36,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:36,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 07:08:36,837 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:36,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:36,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1077680046, now seen corresponding path program 1 times [2022-07-12 07:08:36,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:36,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666139342] [2022-07-12 07:08:36,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:36,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:36,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:36,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:36,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666139342] [2022-07-12 07:08:36,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666139342] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:36,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:36,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:08:36,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732568367] [2022-07-12 07:08:36,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:36,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:08:36,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:36,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:08:36,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:08:36,940 INFO L87 Difference]: Start difference. First operand 6260 states and 8703 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:41,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:41,427 INFO L93 Difference]: Finished difference Result 9814 states and 13743 transitions. [2022-07-12 07:08:41,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:08:41,428 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-07-12 07:08:41,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:41,436 INFO L225 Difference]: With dead ends: 9814 [2022-07-12 07:08:41,436 INFO L226 Difference]: Without dead ends: 8122 [2022-07-12 07:08:41,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:08:41,438 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 2500 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:41,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2500 Valid, 1410 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 07:08:41,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8122 states. [2022-07-12 07:08:44,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8122 to 6258. [2022-07-12 07:08:44,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6258 states, 6257 states have (on average 1.3902828831708487) internal successors, (8699), 6257 states have internal predecessors, (8699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:44,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6258 states to 6258 states and 8699 transitions. [2022-07-12 07:08:44,318 INFO L78 Accepts]: Start accepts. Automaton has 6258 states and 8699 transitions. Word has length 75 [2022-07-12 07:08:44,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:44,318 INFO L495 AbstractCegarLoop]: Abstraction has 6258 states and 8699 transitions. [2022-07-12 07:08:44,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:44,319 INFO L276 IsEmpty]: Start isEmpty. Operand 6258 states and 8699 transitions. [2022-07-12 07:08:44,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 07:08:44,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:44,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:44,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 07:08:44,323 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:44,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:44,324 INFO L85 PathProgramCache]: Analyzing trace with hash -594605292, now seen corresponding path program 1 times [2022-07-12 07:08:44,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:44,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520602019] [2022-07-12 07:08:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:44,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:44,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:44,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:44,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520602019] [2022-07-12 07:08:44,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520602019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:44,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:44,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 07:08:44,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131611897] [2022-07-12 07:08:44,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:44,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 07:08:44,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:44,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 07:08:44,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 07:08:44,476 INFO L87 Difference]: Start difference. First operand 6258 states and 8699 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:06,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:09:06,843 INFO L93 Difference]: Finished difference Result 39802 states and 56118 transitions. [2022-07-12 07:09:06,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-12 07:09:06,844 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-07-12 07:09:06,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:09:06,898 INFO L225 Difference]: With dead ends: 39802 [2022-07-12 07:09:06,898 INFO L226 Difference]: Without dead ends: 38067 [2022-07-12 07:09:06,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=457, Invalid=1349, Unknown=0, NotChecked=0, Total=1806 [2022-07-12 07:09:06,912 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 4666 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 2840 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:09:06,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4666 Valid, 2840 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 2050 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 07:09:06,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38067 states. [2022-07-12 07:09:10,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38067 to 6274. [2022-07-12 07:09:10,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6274 states, 6273 states have (on average 1.3892874222859877) internal successors, (8715), 6273 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:10,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6274 states to 6274 states and 8715 transitions. [2022-07-12 07:09:10,253 INFO L78 Accepts]: Start accepts. Automaton has 6274 states and 8715 transitions. Word has length 75 [2022-07-12 07:09:10,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:09:10,253 INFO L495 AbstractCegarLoop]: Abstraction has 6274 states and 8715 transitions. [2022-07-12 07:09:10,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:10,253 INFO L276 IsEmpty]: Start isEmpty. Operand 6274 states and 8715 transitions. [2022-07-12 07:09:10,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-12 07:09:10,257 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:09:10,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:09:10,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 07:09:10,257 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:09:10,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:09:10,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1770316250, now seen corresponding path program 1 times [2022-07-12 07:09:10,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:09:10,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062582251] [2022-07-12 07:09:10,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:09:10,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:09:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:09:10,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:09:10,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:09:10,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062582251] [2022-07-12 07:09:10,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062582251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:09:10,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:09:10,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:09:10,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117930716] [2022-07-12 07:09:10,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:09:10,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:09:10,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:09:10,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:09:10,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:09:10,339 INFO L87 Difference]: Start difference. First operand 6274 states and 8715 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:18,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:09:18,629 INFO L93 Difference]: Finished difference Result 16257 states and 22862 transitions. [2022-07-12 07:09:18,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:09:18,629 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-07-12 07:09:18,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:09:18,646 INFO L225 Difference]: With dead ends: 16257 [2022-07-12 07:09:18,646 INFO L226 Difference]: Without dead ends: 14522 [2022-07-12 07:09:18,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-07-12 07:09:18,649 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 2480 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2480 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 07:09:18,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2480 Valid, 1659 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 07:09:18,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14522 states. [2022-07-12 07:09:21,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14522 to 6235. [2022-07-12 07:09:21,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6235 states, 6234 states have (on average 1.3905999358357395) internal successors, (8669), 6234 states have internal predecessors, (8669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:21,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6235 states to 6235 states and 8669 transitions. [2022-07-12 07:09:21,813 INFO L78 Accepts]: Start accepts. Automaton has 6235 states and 8669 transitions. Word has length 76 [2022-07-12 07:09:21,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:09:21,813 INFO L495 AbstractCegarLoop]: Abstraction has 6235 states and 8669 transitions. [2022-07-12 07:09:21,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:21,813 INFO L276 IsEmpty]: Start isEmpty. Operand 6235 states and 8669 transitions. [2022-07-12 07:09:21,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-12 07:09:21,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:09:21,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:09:21,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 07:09:21,818 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:09:21,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:09:21,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2139551739, now seen corresponding path program 1 times [2022-07-12 07:09:21,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:09:21,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8495309] [2022-07-12 07:09:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:09:21,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:09:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:09:21,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:09:21,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:09:21,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8495309] [2022-07-12 07:09:21,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8495309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:09:21,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:09:21,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:09:21,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672126976] [2022-07-12 07:09:21,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:09:21,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:09:21,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:09:21,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:09:21,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:09:21,860 INFO L87 Difference]: Start difference. First operand 6235 states and 8669 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:25,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:09:25,062 INFO L93 Difference]: Finished difference Result 9551 states and 13363 transitions. [2022-07-12 07:09:25,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:09:25,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-07-12 07:09:25,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:09:25,069 INFO L225 Difference]: With dead ends: 9551 [2022-07-12 07:09:25,070 INFO L226 Difference]: Without dead ends: 6237 [2022-07-12 07:09:25,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:09:25,074 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 245 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:09:25,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 940 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:09:25,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2022-07-12 07:09:28,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 6235. [2022-07-12 07:09:28,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6235 states, 6234 states have (on average 1.3763233878729548) internal successors, (8580), 6234 states have internal predecessors, (8580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:28,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6235 states to 6235 states and 8580 transitions. [2022-07-12 07:09:28,094 INFO L78 Accepts]: Start accepts. Automaton has 6235 states and 8580 transitions. Word has length 76 [2022-07-12 07:09:28,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:09:28,095 INFO L495 AbstractCegarLoop]: Abstraction has 6235 states and 8580 transitions. [2022-07-12 07:09:28,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:28,095 INFO L276 IsEmpty]: Start isEmpty. Operand 6235 states and 8580 transitions. [2022-07-12 07:09:28,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-12 07:09:28,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:09:28,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:09:28,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 07:09:28,099 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:09:28,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:09:28,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1274480763, now seen corresponding path program 1 times [2022-07-12 07:09:28,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:09:28,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102593941] [2022-07-12 07:09:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:09:28,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:09:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:09:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:09:28,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:09:28,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102593941] [2022-07-12 07:09:28,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102593941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:09:28,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:09:28,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:09:28,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049572008] [2022-07-12 07:09:28,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:09:28,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:09:28,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:09:28,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:09:28,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:09:28,145 INFO L87 Difference]: Start difference. First operand 6235 states and 8580 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:30,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:09:30,767 INFO L93 Difference]: Finished difference Result 8302 states and 11451 transitions. [2022-07-12 07:09:30,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:09:30,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-07-12 07:09:30,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:09:30,773 INFO L225 Difference]: With dead ends: 8302 [2022-07-12 07:09:30,773 INFO L226 Difference]: Without dead ends: 5264 [2022-07-12 07:09:30,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:09:30,776 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 272 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:09:30,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 901 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:09:30,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5264 states. [2022-07-12 07:09:32,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5264 to 4178. [2022-07-12 07:09:32,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 4177 states have (on average 1.3418721570505148) internal successors, (5605), 4177 states have internal predecessors, (5605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 5605 transitions. [2022-07-12 07:09:32,723 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 5605 transitions. Word has length 76 [2022-07-12 07:09:32,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:09:32,723 INFO L495 AbstractCegarLoop]: Abstraction has 4178 states and 5605 transitions. [2022-07-12 07:09:32,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:32,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 5605 transitions. [2022-07-12 07:09:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 07:09:32,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:09:32,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:09:32,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 07:09:32,727 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:09:32,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:09:32,727 INFO L85 PathProgramCache]: Analyzing trace with hash 895278353, now seen corresponding path program 1 times [2022-07-12 07:09:32,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:09:32,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695089721] [2022-07-12 07:09:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:09:32,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:09:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:09:32,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:09:32,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:09:32,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695089721] [2022-07-12 07:09:32,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695089721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:09:32,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:09:32,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:09:32,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101098597] [2022-07-12 07:09:32,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:09:32,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:09:32,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:09:32,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:09:32,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:09:32,766 INFO L87 Difference]: Start difference. First operand 4178 states and 5605 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:35,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:09:35,314 INFO L93 Difference]: Finished difference Result 7498 states and 10156 transitions. [2022-07-12 07:09:35,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:09:35,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-12 07:09:35,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:09:35,320 INFO L225 Difference]: With dead ends: 7498 [2022-07-12 07:09:35,320 INFO L226 Difference]: Without dead ends: 5023 [2022-07-12 07:09:35,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:09:35,323 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 355 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:09:35,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 514 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:09:35,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2022-07-12 07:09:37,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 3917. [2022-07-12 07:09:37,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3917 states, 3916 states have (on average 1.3465270684371808) internal successors, (5273), 3916 states have internal predecessors, (5273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:37,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3917 states to 3917 states and 5273 transitions. [2022-07-12 07:09:37,217 INFO L78 Accepts]: Start accepts. Automaton has 3917 states and 5273 transitions. Word has length 77 [2022-07-12 07:09:37,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:09:37,217 INFO L495 AbstractCegarLoop]: Abstraction has 3917 states and 5273 transitions. [2022-07-12 07:09:37,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:37,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3917 states and 5273 transitions. [2022-07-12 07:09:37,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-12 07:09:37,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:09:37,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:09:37,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 07:09:37,221 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:09:37,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:09:37,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1668712, now seen corresponding path program 1 times [2022-07-12 07:09:37,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:09:37,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452612804] [2022-07-12 07:09:37,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:09:37,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:09:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:09:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:09:37,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:09:37,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452612804] [2022-07-12 07:09:37,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452612804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:09:37,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:09:37,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 07:09:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851840962] [2022-07-12 07:09:37,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:09:37,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 07:09:37,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:09:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 07:09:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:09:37,553 INFO L87 Difference]: Start difference. First operand 3917 states and 5273 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:45,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:09:45,429 INFO L93 Difference]: Finished difference Result 12026 states and 16445 transitions. [2022-07-12 07:09:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 07:09:45,429 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-07-12 07:09:45,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:09:45,444 INFO L225 Difference]: With dead ends: 12026 [2022-07-12 07:09:45,445 INFO L226 Difference]: Without dead ends: 11873 [2022-07-12 07:09:45,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=253, Invalid=677, Unknown=0, NotChecked=0, Total=930 [2022-07-12 07:09:45,448 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 4128 mSDsluCounter, 3581 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4128 SdHoareTripleChecker+Valid, 4161 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 07:09:45,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4128 Valid, 4161 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 07:09:45,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11873 states. [2022-07-12 07:09:47,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11873 to 3884. [2022-07-12 07:09:47,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3883 states have (on average 1.3471542621684265) internal successors, (5231), 3883 states have internal predecessors, (5231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:47,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 5231 transitions. [2022-07-12 07:09:47,377 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 5231 transitions. Word has length 78 [2022-07-12 07:09:47,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:09:47,378 INFO L495 AbstractCegarLoop]: Abstraction has 3884 states and 5231 transitions. [2022-07-12 07:09:47,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:47,378 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 5231 transitions. [2022-07-12 07:09:47,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-12 07:09:47,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:09:47,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:09:47,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 07:09:47,384 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:09:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:09:47,385 INFO L85 PathProgramCache]: Analyzing trace with hash -961989651, now seen corresponding path program 1 times [2022-07-12 07:09:47,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:09:47,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98290682] [2022-07-12 07:09:47,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:09:47,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:09:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:09:47,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:09:47,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:09:47,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98290682] [2022-07-12 07:09:47,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98290682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:09:47,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:09:47,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:09:47,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293530454] [2022-07-12 07:09:47,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:09:47,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:09:47,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:09:47,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:09:47,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:09:47,466 INFO L87 Difference]: Start difference. First operand 3884 states and 5231 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:53,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:09:53,296 INFO L93 Difference]: Finished difference Result 12444 states and 17323 transitions. [2022-07-12 07:09:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:09:53,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-07-12 07:09:53,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:09:53,307 INFO L225 Difference]: With dead ends: 12444 [2022-07-12 07:09:53,307 INFO L226 Difference]: Without dead ends: 9634 [2022-07-12 07:09:53,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:09:53,311 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1745 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:09:53,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1745 Valid, 1184 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:09:53,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9634 states. [2022-07-12 07:09:57,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9634 to 6692. [2022-07-12 07:09:57,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6692 states, 6691 states have (on average 1.3588402331490061) internal successors, (9092), 6691 states have internal predecessors, (9092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:57,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6692 states to 6692 states and 9092 transitions. [2022-07-12 07:09:57,281 INFO L78 Accepts]: Start accepts. Automaton has 6692 states and 9092 transitions. Word has length 82 [2022-07-12 07:09:57,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:09:57,281 INFO L495 AbstractCegarLoop]: Abstraction has 6692 states and 9092 transitions. [2022-07-12 07:09:57,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:57,281 INFO L276 IsEmpty]: Start isEmpty. Operand 6692 states and 9092 transitions. [2022-07-12 07:09:57,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-12 07:09:57,288 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:09:57,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:09:57,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 07:09:57,289 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:09:57,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:09:57,289 INFO L85 PathProgramCache]: Analyzing trace with hash -445916950, now seen corresponding path program 1 times [2022-07-12 07:09:57,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:09:57,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553118917] [2022-07-12 07:09:57,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:09:57,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:09:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:09:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:09:57,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:09:57,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553118917] [2022-07-12 07:09:57,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553118917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:09:57,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:09:57,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:09:57,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203588433] [2022-07-12 07:09:57,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:09:57,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:09:57,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:09:57,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:09:57,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:09:57,378 INFO L87 Difference]: Start difference. First operand 6692 states and 9092 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:10:02,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:10:02,443 INFO L93 Difference]: Finished difference Result 8748 states and 11871 transitions. [2022-07-12 07:10:02,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:10:02,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-12 07:10:02,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:10:02,455 INFO L225 Difference]: With dead ends: 8748 [2022-07-12 07:10:02,455 INFO L226 Difference]: Without dead ends: 7924 [2022-07-12 07:10:02,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:10:02,458 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 796 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:10:02,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1229 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:10:02,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7924 states. [2022-07-12 07:10:07,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7924 to 7550. [2022-07-12 07:10:07,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7550 states, 7549 states have (on average 1.3600476884355543) internal successors, (10267), 7549 states have internal predecessors, (10267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:10:07,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7550 states to 7550 states and 10267 transitions. [2022-07-12 07:10:07,537 INFO L78 Accepts]: Start accepts. Automaton has 7550 states and 10267 transitions. Word has length 83 [2022-07-12 07:10:07,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:10:07,538 INFO L495 AbstractCegarLoop]: Abstraction has 7550 states and 10267 transitions. [2022-07-12 07:10:07,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:10:07,538 INFO L276 IsEmpty]: Start isEmpty. Operand 7550 states and 10267 transitions. [2022-07-12 07:10:07,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 07:10:07,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:10:07,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:10:07,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 07:10:07,543 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:10:07,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:10:07,543 INFO L85 PathProgramCache]: Analyzing trace with hash -432865228, now seen corresponding path program 1 times [2022-07-12 07:10:07,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:10:07,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865640379] [2022-07-12 07:10:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:10:07,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:10:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:10:07,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:10:07,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:10:07,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865640379] [2022-07-12 07:10:07,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865640379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:10:07,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:10:07,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:10:07,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174656364] [2022-07-12 07:10:07,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:10:07,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:10:07,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:10:07,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:10:07,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:10:07,582 INFO L87 Difference]: Start difference. First operand 7550 states and 10267 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:10:16,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:10:16,402 INFO L93 Difference]: Finished difference Result 19574 states and 26945 transitions. [2022-07-12 07:10:16,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:10:16,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-07-12 07:10:16,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:10:16,417 INFO L225 Difference]: With dead ends: 19574 [2022-07-12 07:10:16,417 INFO L226 Difference]: Without dead ends: 13084 [2022-07-12 07:10:16,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:10:16,422 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 153 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:10:16,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 767 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:10:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13084 states. [2022-07-12 07:10:24,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13084 to 11994. [2022-07-12 07:10:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11994 states, 11993 states have (on average 1.3668806803968983) internal successors, (16393), 11993 states have internal predecessors, (16393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:10:24,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11994 states to 11994 states and 16393 transitions. [2022-07-12 07:10:24,330 INFO L78 Accepts]: Start accepts. Automaton has 11994 states and 16393 transitions. Word has length 84 [2022-07-12 07:10:24,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:10:24,330 INFO L495 AbstractCegarLoop]: Abstraction has 11994 states and 16393 transitions. [2022-07-12 07:10:24,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:10:24,330 INFO L276 IsEmpty]: Start isEmpty. Operand 11994 states and 16393 transitions. [2022-07-12 07:10:24,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-12 07:10:24,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:10:24,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:10:24,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 07:10:24,335 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:10:24,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:10:24,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1208093171, now seen corresponding path program 1 times [2022-07-12 07:10:24,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:10:24,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946531079] [2022-07-12 07:10:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:10:24,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:10:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:10:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:10:24,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:10:24,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946531079] [2022-07-12 07:10:24,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946531079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:10:24,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:10:24,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:10:24,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122819120] [2022-07-12 07:10:24,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:10:24,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:10:24,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:10:24,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:10:24,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:10:24,374 INFO L87 Difference]: Start difference. First operand 11994 states and 16393 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:10:39,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:10:39,525 INFO L93 Difference]: Finished difference Result 32590 states and 44827 transitions. [2022-07-12 07:10:39,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:10:39,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-07-12 07:10:39,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:10:39,558 INFO L225 Difference]: With dead ends: 32590 [2022-07-12 07:10:39,559 INFO L226 Difference]: Without dead ends: 21656 [2022-07-12 07:10:39,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:10:39,569 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 135 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:10:39,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 758 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:10:39,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21656 states. [2022-07-12 07:10:53,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21656 to 19634. [2022-07-12 07:10:53,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19634 states, 19633 states have (on average 1.3679519176896042) internal successors, (26857), 19633 states have internal predecessors, (26857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:10:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19634 states to 19634 states and 26857 transitions. [2022-07-12 07:10:53,409 INFO L78 Accepts]: Start accepts. Automaton has 19634 states and 26857 transitions. Word has length 85 [2022-07-12 07:10:53,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:10:53,409 INFO L495 AbstractCegarLoop]: Abstraction has 19634 states and 26857 transitions. [2022-07-12 07:10:53,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:10:53,409 INFO L276 IsEmpty]: Start isEmpty. Operand 19634 states and 26857 transitions. [2022-07-12 07:10:53,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-12 07:10:53,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:10:53,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:10:53,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-12 07:10:53,415 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:10:53,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:10:53,415 INFO L85 PathProgramCache]: Analyzing trace with hash -443971689, now seen corresponding path program 1 times [2022-07-12 07:10:53,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:10:53,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585398653] [2022-07-12 07:10:53,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:10:53,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:10:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:10:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:10:53,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:10:53,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585398653] [2022-07-12 07:10:53,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585398653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:10:53,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:10:53,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:10:53,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719133243] [2022-07-12 07:10:53,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:10:53,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:10:53,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:10:53,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:10:53,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:10:53,451 INFO L87 Difference]: Start difference. First operand 19634 states and 26857 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)