./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+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 34aba2e0444cf7168338399e1c016871ad9a3305ff2dee9e611b86f3cad834b5 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:27:10,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:27:10,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:27:10,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:27:10,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:27:10,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:27:10,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:27:10,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:27:10,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:27:10,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:27:10,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:27:10,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:27:10,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:27:10,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:27:10,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:27:10,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:27:10,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:27:10,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:27:10,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:27:10,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:27:10,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:27:10,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:27:10,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:27:10,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:27:10,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:27:10,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:27:10,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:27:10,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:27:10,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:27:10,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:27:10,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:27:10,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:27:10,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:27:10,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:27:10,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:27:10,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:27:10,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:27:10,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:27:10,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:27:10,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:27:10,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:27:10,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:27:10,497 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:27:10,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:27:10,498 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:27:10,498 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:27:10,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:27:10,499 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:27:10,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:27:10,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:27:10,499 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:27:10,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:27:10,500 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:27:10,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:27:10,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:27:10,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:27:10,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:27:10,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:27:10,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:27:10,501 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:27:10,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:27:10,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:27:10,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:27:10,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:27:10,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:27:10,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:27:10,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:27:10,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:27:10,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:27:10,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:27:10,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:27:10,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:27:10,503 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:27:10,503 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:27:10,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:27:10,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:27:10,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34aba2e0444cf7168338399e1c016871ad9a3305ff2dee9e611b86f3cad834b5 [2021-12-15 11:27:10,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:27:10,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:27:10,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:27:10,703 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:27:10,703 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:27:10,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-15 11:27:10,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/270766541/e3d7ed1e02be406e96523a3df39143a1/FLAGf658bb850 [2021-12-15 11:27:11,114 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:27:11,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-15 11:27:11,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/270766541/e3d7ed1e02be406e96523a3df39143a1/FLAGf658bb850 [2021-12-15 11:27:11,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/270766541/e3d7ed1e02be406e96523a3df39143a1 [2021-12-15 11:27:11,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:27:11,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:27:11,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:27:11,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:27:11,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:27:11,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:27:11" (1/1) ... [2021-12-15 11:27:11,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350a4326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:11, skipping insertion in model container [2021-12-15 11:27:11,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:27:11" (1/1) ... [2021-12-15 11:27:11,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:27:11,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:27:11,420 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8127,8140] [2021-12-15 11:27:11,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14997,15010] [2021-12-15 11:27:11,448 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17084,17097] [2021-12-15 11:27:11,467 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18108,18121] [2021-12-15 11:27:11,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:27:11,606 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:27:11,654 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8127,8140] [2021-12-15 11:27:11,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14997,15010] [2021-12-15 11:27:11,695 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17084,17097] [2021-12-15 11:27:11,704 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18108,18121] [2021-12-15 11:27:11,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:27:11,811 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:27:11,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:11 WrapperNode [2021-12-15 11:27:11,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:27:11,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:27:11,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:27:11,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:27:11,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:11" (1/1) ... [2021-12-15 11:27:11,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:11" (1/1) ... [2021-12-15 11:27:11,886 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2418 [2021-12-15 11:27:11,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:27:11,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:27:11,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:27:11,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:27:11,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:11" (1/1) ... [2021-12-15 11:27:11,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:11" (1/1) ... [2021-12-15 11:27:11,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:11" (1/1) ... [2021-12-15 11:27:11,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:11" (1/1) ... [2021-12-15 11:27:11,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:11" (1/1) ... [2021-12-15 11:27:11,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:11" (1/1) ... [2021-12-15 11:27:12,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:11" (1/1) ... [2021-12-15 11:27:12,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:27:12,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:27:12,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:27:12,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:27:12,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:11" (1/1) ... [2021-12-15 11:27:12,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:27:12,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:27:12,064 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) [2021-12-15 11:27:12,094 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 [2021-12-15 11:27:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:27:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:27:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:27:12,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:27:12,279 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:27:12,280 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:27:13,300 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:27:13,307 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:27:13,307 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 11:27:13,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:27:13 BoogieIcfgContainer [2021-12-15 11:27:13,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:27:13,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:27:13,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:27:13,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:27:13,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:27:11" (1/3) ... [2021-12-15 11:27:13,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d4913a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:27:13, skipping insertion in model container [2021-12-15 11:27:13,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:11" (2/3) ... [2021-12-15 11:27:13,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d4913a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:27:13, skipping insertion in model container [2021-12-15 11:27:13,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:27:13" (3/3) ... [2021-12-15 11:27:13,314 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-15 11:27:13,317 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:27:13,317 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-15 11:27:13,346 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:27:13,362 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:27:13,363 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-15 11:27:13,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 456 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 455 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-15 11:27:13,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:13,402 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:13,403 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:13,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:13,406 INFO L85 PathProgramCache]: Analyzing trace with hash 26036561, now seen corresponding path program 1 times [2021-12-15 11:27:13,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:13,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868768241] [2021-12-15 11:27:13,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:13,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:13,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:13,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868768241] [2021-12-15 11:27:13,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868768241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:13,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:13,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:27:13,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120773948] [2021-12-15 11:27:13,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:13,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:27:13,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:13,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:27:13,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:27:13,697 INFO L87 Difference]: Start difference. First operand has 456 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 455 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:14,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:14,156 INFO L93 Difference]: Finished difference Result 801 states and 1409 transitions. [2021-12-15 11:27:14,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:27:14,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-12-15 11:27:14,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:14,181 INFO L225 Difference]: With dead ends: 801 [2021-12-15 11:27:14,181 INFO L226 Difference]: Without dead ends: 506 [2021-12-15 11:27:14,189 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:14,192 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 2408 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2408 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:14,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2408 Valid, 628 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 11:27:14,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-12-15 11:27:14,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 500. [2021-12-15 11:27:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 496 states have (on average 1.3629032258064515) internal successors, (676), 499 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 676 transitions. [2021-12-15 11:27:14,286 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 676 transitions. Word has length 50 [2021-12-15 11:27:14,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:14,287 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 676 transitions. [2021-12-15 11:27:14,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:14,287 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 676 transitions. [2021-12-15 11:27:14,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-15 11:27:14,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:14,289 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:14,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:27:14,290 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:14,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:14,291 INFO L85 PathProgramCache]: Analyzing trace with hash 750483170, now seen corresponding path program 1 times [2021-12-15 11:27:14,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:14,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887519456] [2021-12-15 11:27:14,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:14,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:14,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:14,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887519456] [2021-12-15 11:27:14,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887519456] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:14,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:14,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:14,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339208298] [2021-12-15 11:27:14,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:14,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:14,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:14,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:14,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:14,417 INFO L87 Difference]: Start difference. First operand 500 states and 676 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:14,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:14,489 INFO L93 Difference]: Finished difference Result 818 states and 1149 transitions. [2021-12-15 11:27:14,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:14,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-12-15 11:27:14,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:14,492 INFO L225 Difference]: With dead ends: 818 [2021-12-15 11:27:14,492 INFO L226 Difference]: Without dead ends: 611 [2021-12-15 11:27:14,493 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:14,493 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 323 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:14,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 871 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:14,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-12-15 11:27:14,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 604. [2021-12-15 11:27:14,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 600 states have (on average 1.3816666666666666) internal successors, (829), 603 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:14,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 829 transitions. [2021-12-15 11:27:14,511 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 829 transitions. Word has length 50 [2021-12-15 11:27:14,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:14,512 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 829 transitions. [2021-12-15 11:27:14,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 829 transitions. [2021-12-15 11:27:14,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-15 11:27:14,513 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:14,514 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:14,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 11:27:14,514 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:14,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:14,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1934980700, now seen corresponding path program 1 times [2021-12-15 11:27:14,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:14,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408393733] [2021-12-15 11:27:14,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:14,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:14,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:14,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:14,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408393733] [2021-12-15 11:27:14,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408393733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:14,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:14,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:14,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165783321] [2021-12-15 11:27:14,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:14,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:14,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:14,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:14,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:14,558 INFO L87 Difference]: Start difference. First operand 604 states and 829 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:14,613 INFO L93 Difference]: Finished difference Result 1205 states and 1719 transitions. [2021-12-15 11:27:14,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:14,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-12-15 11:27:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:14,616 INFO L225 Difference]: With dead ends: 1205 [2021-12-15 11:27:14,616 INFO L226 Difference]: Without dead ends: 900 [2021-12-15 11:27:14,617 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:14,618 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 279 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:14,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 904 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:14,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-12-15 11:27:14,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 893. [2021-12-15 11:27:14,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 889 states have (on average 1.40607424071991) internal successors, (1250), 892 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:14,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1250 transitions. [2021-12-15 11:27:14,648 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1250 transitions. Word has length 50 [2021-12-15 11:27:14,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:14,648 INFO L470 AbstractCegarLoop]: Abstraction has 893 states and 1250 transitions. [2021-12-15 11:27:14,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:14,648 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1250 transitions. [2021-12-15 11:27:14,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-15 11:27:14,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:14,650 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:14,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 11:27:14,650 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:14,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1790696818, now seen corresponding path program 1 times [2021-12-15 11:27:14,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:14,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952897011] [2021-12-15 11:27:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:14,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:14,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:14,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952897011] [2021-12-15 11:27:14,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952897011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:14,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:14,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:27:14,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295423123] [2021-12-15 11:27:14,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:14,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:27:14,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:14,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:27:14,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:27:14,697 INFO L87 Difference]: Start difference. First operand 893 states and 1250 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:14,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:14,985 INFO L93 Difference]: Finished difference Result 1834 states and 2615 transitions. [2021-12-15 11:27:14,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:27:14,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-12-15 11:27:14,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:14,990 INFO L225 Difference]: With dead ends: 1834 [2021-12-15 11:27:14,990 INFO L226 Difference]: Without dead ends: 1111 [2021-12-15 11:27:14,991 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:14,992 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1591 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:14,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 380 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 11:27:14,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2021-12-15 11:27:15,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1101. [2021-12-15 11:27:15,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1097 states have (on average 1.4120328167730174) internal successors, (1549), 1100 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:15,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1549 transitions. [2021-12-15 11:27:15,024 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1549 transitions. Word has length 50 [2021-12-15 11:27:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:15,024 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 1549 transitions. [2021-12-15 11:27:15,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:15,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1549 transitions. [2021-12-15 11:27:15,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-15 11:27:15,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:15,026 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:15,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 11:27:15,026 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:15,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:15,027 INFO L85 PathProgramCache]: Analyzing trace with hash -614006313, now seen corresponding path program 1 times [2021-12-15 11:27:15,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:15,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050047938] [2021-12-15 11:27:15,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:15,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:15,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:15,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:15,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050047938] [2021-12-15 11:27:15,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050047938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:15,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:15,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:27:15,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960857656] [2021-12-15 11:27:15,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:15,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:27:15,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:15,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:27:15,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:27:15,069 INFO L87 Difference]: Start difference. First operand 1101 states and 1549 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:15,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:15,357 INFO L93 Difference]: Finished difference Result 2817 states and 4069 transitions. [2021-12-15 11:27:15,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:27:15,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-12-15 11:27:15,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:15,363 INFO L225 Difference]: With dead ends: 2817 [2021-12-15 11:27:15,363 INFO L226 Difference]: Without dead ends: 1803 [2021-12-15 11:27:15,365 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:15,367 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 1482 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:15,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 346 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 11:27:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2021-12-15 11:27:15,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1797. [2021-12-15 11:27:15,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1793 states have (on average 1.437255995538204) internal successors, (2577), 1796 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:15,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2577 transitions. [2021-12-15 11:27:15,493 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2577 transitions. Word has length 51 [2021-12-15 11:27:15,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:15,495 INFO L470 AbstractCegarLoop]: Abstraction has 1797 states and 2577 transitions. [2021-12-15 11:27:15,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2577 transitions. [2021-12-15 11:27:15,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-15 11:27:15,497 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:15,500 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:15,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 11:27:15,514 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:15,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:15,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1152471482, now seen corresponding path program 1 times [2021-12-15 11:27:15,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:15,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26881781] [2021-12-15 11:27:15,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:15,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:15,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:15,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26881781] [2021-12-15 11:27:15,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26881781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:15,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:15,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:15,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935197184] [2021-12-15 11:27:15,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:15,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:15,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:15,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:15,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:15,593 INFO L87 Difference]: Start difference. First operand 1797 states and 2577 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:15,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:15,715 INFO L93 Difference]: Finished difference Result 4619 states and 6671 transitions. [2021-12-15 11:27:15,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:15,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-15 11:27:15,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:15,724 INFO L225 Difference]: With dead ends: 4619 [2021-12-15 11:27:15,724 INFO L226 Difference]: Without dead ends: 2989 [2021-12-15 11:27:15,726 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:15,731 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 281 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:15,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 768 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:15,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2021-12-15 11:27:15,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2965. [2021-12-15 11:27:15,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2961 states have (on average 1.414724755150287) internal successors, (4189), 2964 states have internal predecessors, (4189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:15,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4189 transitions. [2021-12-15 11:27:15,851 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4189 transitions. Word has length 52 [2021-12-15 11:27:15,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:15,851 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 4189 transitions. [2021-12-15 11:27:15,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:15,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4189 transitions. [2021-12-15 11:27:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-15 11:27:15,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:15,853 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:15,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 11:27:15,853 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:15,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:15,855 INFO L85 PathProgramCache]: Analyzing trace with hash 825819079, now seen corresponding path program 1 times [2021-12-15 11:27:15,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:15,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926010429] [2021-12-15 11:27:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:15,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:15,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:15,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926010429] [2021-12-15 11:27:15,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926010429] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:15,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:15,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 11:27:15,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634020939] [2021-12-15 11:27:15,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:15,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 11:27:15,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:15,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 11:27:15,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 11:27:15,922 INFO L87 Difference]: Start difference. First operand 2965 states and 4189 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:16,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:16,495 INFO L93 Difference]: Finished difference Result 9614 states and 13808 transitions. [2021-12-15 11:27:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 11:27:16,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-15 11:27:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:16,517 INFO L225 Difference]: With dead ends: 9614 [2021-12-15 11:27:16,517 INFO L226 Difference]: Without dead ends: 8311 [2021-12-15 11:27:16,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-15 11:27:16,522 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 2747 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2747 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:16,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2747 Valid, 604 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 11:27:16,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8311 states. [2021-12-15 11:27:16,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8311 to 2979. [2021-12-15 11:27:16,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2975 states have (on average 1.4141176470588235) internal successors, (4207), 2978 states have internal predecessors, (4207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 4207 transitions. [2021-12-15 11:27:16,748 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 4207 transitions. Word has length 53 [2021-12-15 11:27:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:16,749 INFO L470 AbstractCegarLoop]: Abstraction has 2979 states and 4207 transitions. [2021-12-15 11:27:16,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 4207 transitions. [2021-12-15 11:27:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-15 11:27:16,751 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:16,751 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:16,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 11:27:16,752 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:16,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:16,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1519774840, now seen corresponding path program 1 times [2021-12-15 11:27:16,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:16,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314434085] [2021-12-15 11:27:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:16,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:16,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:16,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314434085] [2021-12-15 11:27:16,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314434085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:16,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:16,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 11:27:16,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682560593] [2021-12-15 11:27:16,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:16,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 11:27:16,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:16,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 11:27:16,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 11:27:16,852 INFO L87 Difference]: Start difference. First operand 2979 states and 4207 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:17,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:17,787 INFO L93 Difference]: Finished difference Result 10647 states and 15322 transitions. [2021-12-15 11:27:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 11:27:17,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-15 11:27:17,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:17,813 INFO L225 Difference]: With dead ends: 10647 [2021-12-15 11:27:17,813 INFO L226 Difference]: Without dead ends: 9535 [2021-12-15 11:27:17,816 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:17,816 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 2048 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:17,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2048 Valid, 765 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 11:27:17,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9535 states. [2021-12-15 11:27:17,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9535 to 3001. [2021-12-15 11:27:17,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 2997 states have (on average 1.4140807474140809) internal successors, (4238), 3000 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:17,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 4238 transitions. [2021-12-15 11:27:17,989 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 4238 transitions. Word has length 53 [2021-12-15 11:27:17,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:17,990 INFO L470 AbstractCegarLoop]: Abstraction has 3001 states and 4238 transitions. [2021-12-15 11:27:17,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:17,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 4238 transitions. [2021-12-15 11:27:17,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-15 11:27:17,992 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:17,992 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:17,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 11:27:17,992 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:17,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:17,993 INFO L85 PathProgramCache]: Analyzing trace with hash -461927258, now seen corresponding path program 1 times [2021-12-15 11:27:17,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:17,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434441998] [2021-12-15 11:27:17,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:17,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:18,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:18,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:18,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434441998] [2021-12-15 11:27:18,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434441998] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:18,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:18,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 11:27:18,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136375828] [2021-12-15 11:27:18,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:18,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 11:27:18,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:18,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 11:27:18,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 11:27:18,050 INFO L87 Difference]: Start difference. First operand 3001 states and 4238 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:18,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:18,943 INFO L93 Difference]: Finished difference Result 12469 states and 17906 transitions. [2021-12-15 11:27:18,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 11:27:18,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-15 11:27:18,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:18,966 INFO L225 Difference]: With dead ends: 12469 [2021-12-15 11:27:18,966 INFO L226 Difference]: Without dead ends: 11501 [2021-12-15 11:27:18,970 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:18,970 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 3205 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3205 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:18,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3205 Valid, 658 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 11:27:18,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11501 states. [2021-12-15 11:27:19,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11501 to 3035. [2021-12-15 11:27:19,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 3031 states have (on average 1.4127350709336852) internal successors, (4282), 3034 states have internal predecessors, (4282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:19,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 4282 transitions. [2021-12-15 11:27:19,162 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 4282 transitions. Word has length 53 [2021-12-15 11:27:19,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:19,163 INFO L470 AbstractCegarLoop]: Abstraction has 3035 states and 4282 transitions. [2021-12-15 11:27:19,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:19,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 4282 transitions. [2021-12-15 11:27:19,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-15 11:27:19,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:19,165 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:19,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 11:27:19,165 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:19,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:19,166 INFO L85 PathProgramCache]: Analyzing trace with hash -719043471, now seen corresponding path program 1 times [2021-12-15 11:27:19,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:19,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477446083] [2021-12-15 11:27:19,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:19,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:19,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:19,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477446083] [2021-12-15 11:27:19,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477446083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:19,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:19,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 11:27:19,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273336024] [2021-12-15 11:27:19,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:19,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 11:27:19,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:19,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 11:27:19,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-15 11:27:19,289 INFO L87 Difference]: Start difference. First operand 3035 states and 4282 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:20,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:20,147 INFO L93 Difference]: Finished difference Result 10092 states and 14613 transitions. [2021-12-15 11:27:20,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 11:27:20,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-15 11:27:20,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:20,161 INFO L225 Difference]: With dead ends: 10092 [2021-12-15 11:27:20,162 INFO L226 Difference]: Without dead ends: 8143 [2021-12-15 11:27:20,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-12-15 11:27:20,166 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 2254 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2254 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:20,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2254 Valid, 1164 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 11:27:20,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8143 states. [2021-12-15 11:27:20,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8143 to 2945. [2021-12-15 11:27:20,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2941 states have (on average 1.4124447466848011) internal successors, (4154), 2944 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 4154 transitions. [2021-12-15 11:27:20,375 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 4154 transitions. Word has length 54 [2021-12-15 11:27:20,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:20,376 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 4154 transitions. [2021-12-15 11:27:20,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:20,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 4154 transitions. [2021-12-15 11:27:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-15 11:27:20,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:20,378 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:20,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 11:27:20,378 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:20,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:20,379 INFO L85 PathProgramCache]: Analyzing trace with hash 465454059, now seen corresponding path program 1 times [2021-12-15 11:27:20,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:20,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997022597] [2021-12-15 11:27:20,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:20,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:20,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:20,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997022597] [2021-12-15 11:27:20,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997022597] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:20,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:20,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:27:20,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052689151] [2021-12-15 11:27:20,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:20,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:27:20,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:20,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:27:20,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:27:20,481 INFO L87 Difference]: Start difference. First operand 2945 states and 4154 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:21,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:21,632 INFO L93 Difference]: Finished difference Result 8199 states and 11783 transitions. [2021-12-15 11:27:21,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:27:21,633 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-15 11:27:21,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:21,642 INFO L225 Difference]: With dead ends: 8199 [2021-12-15 11:27:21,643 INFO L226 Difference]: Without dead ends: 6410 [2021-12-15 11:27:21,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:27:21,646 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 2036 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:21,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2036 Valid, 1491 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-15 11:27:21,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6410 states. [2021-12-15 11:27:21,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6410 to 2916. [2021-12-15 11:27:21,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2912 states have (on average 1.4124313186813187) internal successors, (4113), 2915 states have internal predecessors, (4113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4113 transitions. [2021-12-15 11:27:21,840 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4113 transitions. Word has length 54 [2021-12-15 11:27:21,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:21,840 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 4113 transitions. [2021-12-15 11:27:21,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:21,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4113 transitions. [2021-12-15 11:27:21,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-15 11:27:21,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:21,844 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:21,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 11:27:21,844 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:21,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:21,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1085167472, now seen corresponding path program 1 times [2021-12-15 11:27:21,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:21,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368489083] [2021-12-15 11:27:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:21,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:21,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:21,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368489083] [2021-12-15 11:27:21,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368489083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:21,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:21,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:27:21,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649112139] [2021-12-15 11:27:21,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:21,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:27:21,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:21,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:27:21,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:27:21,950 INFO L87 Difference]: Start difference. First operand 2916 states and 4113 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:23,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:23,266 INFO L93 Difference]: Finished difference Result 9272 states and 13392 transitions. [2021-12-15 11:27:23,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-15 11:27:23,267 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-15 11:27:23,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:23,279 INFO L225 Difference]: With dead ends: 9272 [2021-12-15 11:27:23,279 INFO L226 Difference]: Without dead ends: 9267 [2021-12-15 11:27:23,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2021-12-15 11:27:23,281 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 1736 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:23,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1736 Valid, 1778 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-15 11:27:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9267 states. [2021-12-15 11:27:23,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9267 to 2916. [2021-12-15 11:27:23,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2912 states have (on average 1.4117445054945055) internal successors, (4111), 2915 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:23,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4111 transitions. [2021-12-15 11:27:23,483 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4111 transitions. Word has length 54 [2021-12-15 11:27:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:23,483 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 4111 transitions. [2021-12-15 11:27:23,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:23,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4111 transitions. [2021-12-15 11:27:23,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-15 11:27:23,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:23,485 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:23,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 11:27:23,486 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:23,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:23,486 INFO L85 PathProgramCache]: Analyzing trace with hash -344500623, now seen corresponding path program 1 times [2021-12-15 11:27:23,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:23,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369586558] [2021-12-15 11:27:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:23,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:23,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:23,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:23,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369586558] [2021-12-15 11:27:23,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369586558] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:23,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:23,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:23,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913566062] [2021-12-15 11:27:23,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:23,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:23,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:23,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:23,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:23,512 INFO L87 Difference]: Start difference. First operand 2916 states and 4111 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:23,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:23,704 INFO L93 Difference]: Finished difference Result 4186 states and 5952 transitions. [2021-12-15 11:27:23,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:23,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-15 11:27:23,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:23,708 INFO L225 Difference]: With dead ends: 4186 [2021-12-15 11:27:23,708 INFO L226 Difference]: Without dead ends: 2923 [2021-12-15 11:27:23,710 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:23,711 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 226 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:23,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 804 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:23,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2021-12-15 11:27:23,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2916. [2021-12-15 11:27:23,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2912 states have (on average 1.3980082417582418) internal successors, (4071), 2915 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:23,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4071 transitions. [2021-12-15 11:27:23,894 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4071 transitions. Word has length 55 [2021-12-15 11:27:23,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:23,894 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 4071 transitions. [2021-12-15 11:27:23,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:23,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4071 transitions. [2021-12-15 11:27:23,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-15 11:27:23,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:23,896 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:23,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 11:27:23,897 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:23,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:23,897 INFO L85 PathProgramCache]: Analyzing trace with hash 29096373, now seen corresponding path program 1 times [2021-12-15 11:27:23,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:23,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895830239] [2021-12-15 11:27:23,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:23,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:23,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:23,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895830239] [2021-12-15 11:27:23,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895830239] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:23,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:23,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:23,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359181196] [2021-12-15 11:27:23,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:23,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:23,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:23,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:23,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:23,922 INFO L87 Difference]: Start difference. First operand 2916 states and 4071 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:24,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:24,093 INFO L93 Difference]: Finished difference Result 4255 states and 5988 transitions. [2021-12-15 11:27:24,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:24,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-15 11:27:24,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:24,098 INFO L225 Difference]: With dead ends: 4255 [2021-12-15 11:27:24,098 INFO L226 Difference]: Without dead ends: 2922 [2021-12-15 11:27:24,100 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:24,101 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 242 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 805 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 [2021-12-15 11:27:24,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 805 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:24,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2021-12-15 11:27:24,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2916. [2021-12-15 11:27:24,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2912 states have (on average 1.3856456043956045) internal successors, (4035), 2915 states have internal predecessors, (4035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:24,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4035 transitions. [2021-12-15 11:27:24,346 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4035 transitions. Word has length 55 [2021-12-15 11:27:24,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:24,346 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 4035 transitions. [2021-12-15 11:27:24,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:24,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4035 transitions. [2021-12-15 11:27:24,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-15 11:27:24,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:24,349 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:24,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 11:27:24,349 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:24,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:24,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1813019801, now seen corresponding path program 1 times [2021-12-15 11:27:24,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:24,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218047936] [2021-12-15 11:27:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:24,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:24,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:24,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218047936] [2021-12-15 11:27:24,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218047936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:24,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:24,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:24,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516787600] [2021-12-15 11:27:24,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:24,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:24,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:24,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:24,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:24,375 INFO L87 Difference]: Start difference. First operand 2916 states and 4035 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:24,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:24,602 INFO L93 Difference]: Finished difference Result 3997 states and 5541 transitions. [2021-12-15 11:27:24,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:24,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-15 11:27:24,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:24,606 INFO L225 Difference]: With dead ends: 3997 [2021-12-15 11:27:24,606 INFO L226 Difference]: Without dead ends: 2907 [2021-12-15 11:27:24,608 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:24,608 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 261 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:24,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 816 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:24,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2021-12-15 11:27:24,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 2901. [2021-12-15 11:27:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 2897 states have (on average 1.3583016914049015) internal successors, (3935), 2900 states have internal predecessors, (3935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:24,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 3935 transitions. [2021-12-15 11:27:24,803 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 3935 transitions. Word has length 55 [2021-12-15 11:27:24,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:24,803 INFO L470 AbstractCegarLoop]: Abstraction has 2901 states and 3935 transitions. [2021-12-15 11:27:24,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:24,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 3935 transitions. [2021-12-15 11:27:24,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-15 11:27:24,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:24,806 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:24,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 11:27:24,806 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:24,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:24,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1260356730, now seen corresponding path program 1 times [2021-12-15 11:27:24,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:24,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290977359] [2021-12-15 11:27:24,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:24,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:24,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:24,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290977359] [2021-12-15 11:27:24,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290977359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:24,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:24,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:24,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486514908] [2021-12-15 11:27:24,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:24,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:24,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:24,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:24,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:24,836 INFO L87 Difference]: Start difference. First operand 2901 states and 3935 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:25,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:25,102 INFO L93 Difference]: Finished difference Result 4576 states and 6264 transitions. [2021-12-15 11:27:25,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:25,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-12-15 11:27:25,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:25,107 INFO L225 Difference]: With dead ends: 4576 [2021-12-15 11:27:25,107 INFO L226 Difference]: Without dead ends: 3319 [2021-12-15 11:27:25,108 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:25,109 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 326 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:25,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 524 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:25,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2021-12-15 11:27:25,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 2719. [2021-12-15 11:27:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2715 states have (on average 1.3624309392265193) internal successors, (3699), 2718 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 3699 transitions. [2021-12-15 11:27:25,317 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 3699 transitions. Word has length 56 [2021-12-15 11:27:25,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:25,317 INFO L470 AbstractCegarLoop]: Abstraction has 2719 states and 3699 transitions. [2021-12-15 11:27:25,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:25,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 3699 transitions. [2021-12-15 11:27:25,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-15 11:27:25,320 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:25,320 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:25,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-15 11:27:25,320 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:25,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:25,321 INFO L85 PathProgramCache]: Analyzing trace with hash -171160754, now seen corresponding path program 1 times [2021-12-15 11:27:25,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:25,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877175195] [2021-12-15 11:27:25,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:25,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:25,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:25,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877175195] [2021-12-15 11:27:25,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877175195] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:25,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:25,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:25,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238899600] [2021-12-15 11:27:25,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:25,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:25,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:25,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:25,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:25,346 INFO L87 Difference]: Start difference. First operand 2719 states and 3699 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:25,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:25,597 INFO L93 Difference]: Finished difference Result 4995 states and 6854 transitions. [2021-12-15 11:27:25,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:25,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-15 11:27:25,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:25,601 INFO L225 Difference]: With dead ends: 4995 [2021-12-15 11:27:25,601 INFO L226 Difference]: Without dead ends: 3334 [2021-12-15 11:27:25,604 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:25,604 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 302 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:25,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 462 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:25,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2021-12-15 11:27:25,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 2583. [2021-12-15 11:27:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 2579 states have (on average 1.3660333462582397) internal successors, (3523), 2582 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:25,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 3523 transitions. [2021-12-15 11:27:25,770 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 3523 transitions. Word has length 57 [2021-12-15 11:27:25,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:25,771 INFO L470 AbstractCegarLoop]: Abstraction has 2583 states and 3523 transitions. [2021-12-15 11:27:25,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:25,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 3523 transitions. [2021-12-15 11:27:25,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-15 11:27:25,772 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:25,773 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:25,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-15 11:27:25,773 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:25,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:25,773 INFO L85 PathProgramCache]: Analyzing trace with hash -544179575, now seen corresponding path program 1 times [2021-12-15 11:27:25,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:25,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552162211] [2021-12-15 11:27:25,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:25,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:26,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:26,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552162211] [2021-12-15 11:27:26,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552162211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:26,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:26,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-15 11:27:26,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306833205] [2021-12-15 11:27:26,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:26,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-15 11:27:26,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:26,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-15 11:27:26,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-15 11:27:26,029 INFO L87 Difference]: Start difference. First operand 2583 states and 3523 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:27,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:27,658 INFO L93 Difference]: Finished difference Result 7628 states and 10608 transitions. [2021-12-15 11:27:27,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-15 11:27:27,658 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-15 11:27:27,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:27,667 INFO L225 Difference]: With dead ends: 7628 [2021-12-15 11:27:27,667 INFO L226 Difference]: Without dead ends: 7222 [2021-12-15 11:27:27,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2021-12-15 11:27:27,669 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 3777 mSDsluCounter, 3775 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3777 SdHoareTripleChecker+Valid, 4327 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:27,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3777 Valid, 4327 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-15 11:27:27,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7222 states. [2021-12-15 11:27:27,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7222 to 2537. [2021-12-15 11:27:27,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2534 states have (on average 1.3677979479084452) internal successors, (3466), 2536 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3466 transitions. [2021-12-15 11:27:27,930 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3466 transitions. Word has length 57 [2021-12-15 11:27:27,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:27,930 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 3466 transitions. [2021-12-15 11:27:27,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:27,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3466 transitions. [2021-12-15 11:27:27,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-15 11:27:27,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:27,932 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:27,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-15 11:27:27,932 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:27,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:27,933 INFO L85 PathProgramCache]: Analyzing trace with hash 303331698, now seen corresponding path program 1 times [2021-12-15 11:27:27,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:27,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113818203] [2021-12-15 11:27:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:27,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:28,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:28,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113818203] [2021-12-15 11:27:28,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113818203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:28,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:28,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-15 11:27:28,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893000378] [2021-12-15 11:27:28,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:28,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-15 11:27:28,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:28,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-15 11:27:28,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-15 11:27:28,147 INFO L87 Difference]: Start difference. First operand 2537 states and 3466 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:29,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:29,605 INFO L93 Difference]: Finished difference Result 5845 states and 8107 transitions. [2021-12-15 11:27:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-15 11:27:29,605 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-15 11:27:29,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:29,611 INFO L225 Difference]: With dead ends: 5845 [2021-12-15 11:27:29,611 INFO L226 Difference]: Without dead ends: 5737 [2021-12-15 11:27:29,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2021-12-15 11:27:29,612 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 3167 mSDsluCounter, 3313 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3167 SdHoareTripleChecker+Valid, 3790 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:29,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3167 Valid, 3790 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-15 11:27:29,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5737 states. [2021-12-15 11:27:29,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5737 to 2525. [2021-12-15 11:27:29,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2525 states, 2523 states have (on average 1.3682124455013873) internal successors, (3452), 2524 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:29,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 3452 transitions. [2021-12-15 11:27:29,897 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 3452 transitions. Word has length 57 [2021-12-15 11:27:29,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:29,897 INFO L470 AbstractCegarLoop]: Abstraction has 2525 states and 3452 transitions. [2021-12-15 11:27:29,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:29,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 3452 transitions. [2021-12-15 11:27:29,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-15 11:27:29,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:29,917 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:29,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-15 11:27:29,918 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:29,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:29,919 INFO L85 PathProgramCache]: Analyzing trace with hash 839862953, now seen corresponding path program 1 times [2021-12-15 11:27:29,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:29,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754793038] [2021-12-15 11:27:29,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:29,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:30,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:30,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754793038] [2021-12-15 11:27:30,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754793038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:30,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:30,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-15 11:27:30,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070876037] [2021-12-15 11:27:30,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:30,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-15 11:27:30,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:30,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-15 11:27:30,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-15 11:27:30,355 INFO L87 Difference]: Start difference. First operand 2525 states and 3452 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:32,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:32,566 INFO L93 Difference]: Finished difference Result 3546 states and 4856 transitions. [2021-12-15 11:27:32,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-15 11:27:32,591 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-15 11:27:32,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:32,596 INFO L225 Difference]: With dead ends: 3546 [2021-12-15 11:27:32,596 INFO L226 Difference]: Without dead ends: 3542 [2021-12-15 11:27:32,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2021-12-15 11:27:32,598 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 2218 mSDsluCounter, 4969 mSDsCounter, 0 mSdLazyCounter, 2580 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 5402 SdHoareTripleChecker+Invalid, 2656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:32,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2218 Valid, 5402 Invalid, 2656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2580 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-15 11:27:32,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3542 states. [2021-12-15 11:27:32,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3542 to 2532. [2021-12-15 11:27:32,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 2530 states have (on average 1.3679841897233203) internal successors, (3461), 2531 states have internal predecessors, (3461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 3461 transitions. [2021-12-15 11:27:32,843 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 3461 transitions. Word has length 57 [2021-12-15 11:27:32,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:32,844 INFO L470 AbstractCegarLoop]: Abstraction has 2532 states and 3461 transitions. [2021-12-15 11:27:32,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:32,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 3461 transitions. [2021-12-15 11:27:32,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-15 11:27:32,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:32,846 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:32,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-15 11:27:32,846 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:32,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:32,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1630954478, now seen corresponding path program 1 times [2021-12-15 11:27:32,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:32,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129099635] [2021-12-15 11:27:32,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:32,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:32,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:32,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129099635] [2021-12-15 11:27:32,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129099635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:32,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:32,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:32,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002749578] [2021-12-15 11:27:32,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:32,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:32,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:32,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:32,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:32,867 INFO L87 Difference]: Start difference. First operand 2532 states and 3461 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:33,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:33,122 INFO L93 Difference]: Finished difference Result 4699 states and 6475 transitions. [2021-12-15 11:27:33,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:33,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-15 11:27:33,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:33,126 INFO L225 Difference]: With dead ends: 4699 [2021-12-15 11:27:33,126 INFO L226 Difference]: Without dead ends: 3120 [2021-12-15 11:27:33,128 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:33,128 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 244 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:33,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 437 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:33,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2021-12-15 11:27:33,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2440. [2021-12-15 11:27:33,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 2438 states have (on average 1.3683347005742412) internal successors, (3336), 2439 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:33,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 3336 transitions. [2021-12-15 11:27:33,319 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 3336 transitions. Word has length 57 [2021-12-15 11:27:33,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:33,319 INFO L470 AbstractCegarLoop]: Abstraction has 2440 states and 3336 transitions. [2021-12-15 11:27:33,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:33,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 3336 transitions. [2021-12-15 11:27:33,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-15 11:27:33,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:33,321 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:33,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-15 11:27:33,321 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:33,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:33,321 INFO L85 PathProgramCache]: Analyzing trace with hash -684569228, now seen corresponding path program 1 times [2021-12-15 11:27:33,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:33,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812667500] [2021-12-15 11:27:33,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:33,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:33,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:33,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812667500] [2021-12-15 11:27:33,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812667500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:33,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:33,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-15 11:27:33,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272658874] [2021-12-15 11:27:33,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:33,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-15 11:27:33,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:33,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-15 11:27:33,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-12-15 11:27:33,743 INFO L87 Difference]: Start difference. First operand 2440 states and 3336 transitions. Second operand has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:35,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:35,463 INFO L93 Difference]: Finished difference Result 3622 states and 4970 transitions. [2021-12-15 11:27:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-15 11:27:35,464 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-12-15 11:27:35,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:35,473 INFO L225 Difference]: With dead ends: 3622 [2021-12-15 11:27:35,473 INFO L226 Difference]: Without dead ends: 3618 [2021-12-15 11:27:35,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2021-12-15 11:27:35,476 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 2116 mSDsluCounter, 3407 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2116 SdHoareTripleChecker+Valid, 3792 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:35,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2116 Valid, 3792 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-15 11:27:35,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2021-12-15 11:27:35,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 2429. [2021-12-15 11:27:35,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 2428 states have (on average 1.3686161449752883) internal successors, (3323), 2428 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:35,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 3323 transitions. [2021-12-15 11:27:35,716 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 3323 transitions. Word has length 58 [2021-12-15 11:27:35,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:35,717 INFO L470 AbstractCegarLoop]: Abstraction has 2429 states and 3323 transitions. [2021-12-15 11:27:35,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:35,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 3323 transitions. [2021-12-15 11:27:35,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-15 11:27:35,721 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:35,721 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:35,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-15 11:27:35,722 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:35,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:35,723 INFO L85 PathProgramCache]: Analyzing trace with hash 485032383, now seen corresponding path program 1 times [2021-12-15 11:27:35,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:35,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991017457] [2021-12-15 11:27:35,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:35,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:35,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:35,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991017457] [2021-12-15 11:27:35,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991017457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:35,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:35,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 11:27:35,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12533640] [2021-12-15 11:27:35,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:35,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:27:35,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:35,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:27:35,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:27:35,760 INFO L87 Difference]: Start difference. First operand 2429 states and 3323 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:36,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:36,182 INFO L93 Difference]: Finished difference Result 5871 states and 8237 transitions. [2021-12-15 11:27:36,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:27:36,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-15 11:27:36,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:36,188 INFO L225 Difference]: With dead ends: 5871 [2021-12-15 11:27:36,188 INFO L226 Difference]: Without dead ends: 4408 [2021-12-15 11:27:36,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-15 11:27:36,191 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 985 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:36,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 756 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:36,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2021-12-15 11:27:36,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 3745. [2021-12-15 11:27:36,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3745 states, 3744 states have (on average 1.3701923076923077) internal successors, (5130), 3744 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:36,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3745 states to 3745 states and 5130 transitions. [2021-12-15 11:27:36,607 INFO L78 Accepts]: Start accepts. Automaton has 3745 states and 5130 transitions. Word has length 66 [2021-12-15 11:27:36,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:36,607 INFO L470 AbstractCegarLoop]: Abstraction has 3745 states and 5130 transitions. [2021-12-15 11:27:36,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:36,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3745 states and 5130 transitions. [2021-12-15 11:27:36,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-15 11:27:36,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:36,610 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:36,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-15 11:27:36,610 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:36,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:36,611 INFO L85 PathProgramCache]: Analyzing trace with hash -656464105, now seen corresponding path program 1 times [2021-12-15 11:27:36,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:36,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710559406] [2021-12-15 11:27:36,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:36,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:36,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:36,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:36,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710559406] [2021-12-15 11:27:36,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710559406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:36,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:36,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 11:27:36,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423107482] [2021-12-15 11:27:36,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:36,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:27:36,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:36,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:27:36,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:27:36,649 INFO L87 Difference]: Start difference. First operand 3745 states and 5130 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:36,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:36,984 INFO L93 Difference]: Finished difference Result 3751 states and 5133 transitions. [2021-12-15 11:27:36,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:27:36,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-15 11:27:36,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:36,988 INFO L225 Difference]: With dead ends: 3751 [2021-12-15 11:27:36,988 INFO L226 Difference]: Without dead ends: 3300 [2021-12-15 11:27:36,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:27:36,989 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 775 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:36,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 691 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2021-12-15 11:27:37,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 3296. [2021-12-15 11:27:37,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3296 states, 3295 states have (on average 1.3745068285280728) internal successors, (4529), 3295 states have internal predecessors, (4529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 4529 transitions. [2021-12-15 11:27:37,299 INFO L78 Accepts]: Start accepts. Automaton has 3296 states and 4529 transitions. Word has length 67 [2021-12-15 11:27:37,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:37,299 INFO L470 AbstractCegarLoop]: Abstraction has 3296 states and 4529 transitions. [2021-12-15 11:27:37,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:37,300 INFO L276 IsEmpty]: Start isEmpty. Operand 3296 states and 4529 transitions. [2021-12-15 11:27:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-15 11:27:37,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:37,302 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:37,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-15 11:27:37,303 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:37,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:37,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1272488439, now seen corresponding path program 1 times [2021-12-15 11:27:37,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:37,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734585100] [2021-12-15 11:27:37,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:37,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:37,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:37,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734585100] [2021-12-15 11:27:37,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734585100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:37,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:37,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:37,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975012307] [2021-12-15 11:27:37,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:37,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:37,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:37,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:37,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:37,329 INFO L87 Difference]: Start difference. First operand 3296 states and 4529 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:38,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:38,029 INFO L93 Difference]: Finished difference Result 7776 states and 10815 transitions. [2021-12-15 11:27:38,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:38,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-15 11:27:38,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:38,035 INFO L225 Difference]: With dead ends: 7776 [2021-12-15 11:27:38,036 INFO L226 Difference]: Without dead ends: 5436 [2021-12-15 11:27:38,038 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:38,039 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 138 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 537 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 [2021-12-15 11:27:38,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 537 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:38,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5436 states. [2021-12-15 11:27:38,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5436 to 5130. [2021-12-15 11:27:38,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5130 states, 5129 states have (on average 1.3817508286215636) internal successors, (7087), 5129 states have internal predecessors, (7087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:38,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5130 states to 5130 states and 7087 transitions. [2021-12-15 11:27:38,614 INFO L78 Accepts]: Start accepts. Automaton has 5130 states and 7087 transitions. Word has length 68 [2021-12-15 11:27:38,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:38,614 INFO L470 AbstractCegarLoop]: Abstraction has 5130 states and 7087 transitions. [2021-12-15 11:27:38,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:38,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5130 states and 7087 transitions. [2021-12-15 11:27:38,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-15 11:27:38,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:38,617 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:38,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-15 11:27:38,617 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:38,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:38,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1794430615, now seen corresponding path program 1 times [2021-12-15 11:27:38,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:38,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148892849] [2021-12-15 11:27:38,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:38,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:38,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:38,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148892849] [2021-12-15 11:27:38,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148892849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:38,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:38,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:38,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476462158] [2021-12-15 11:27:38,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:38,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:38,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:38,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:38,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:38,669 INFO L87 Difference]: Start difference. First operand 5130 states and 7087 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:39,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:39,628 INFO L93 Difference]: Finished difference Result 12794 states and 17741 transitions. [2021-12-15 11:27:39,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:39,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-15 11:27:39,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:39,638 INFO L225 Difference]: With dead ends: 12794 [2021-12-15 11:27:39,638 INFO L226 Difference]: Without dead ends: 8392 [2021-12-15 11:27:39,643 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:39,643 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 141 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:39,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 525 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:39,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8392 states. [2021-12-15 11:27:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8392 to 7758. [2021-12-15 11:27:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7758 states, 7757 states have (on average 1.3661209230372566) internal successors, (10597), 7757 states have internal predecessors, (10597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:40,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7758 states to 7758 states and 10597 transitions. [2021-12-15 11:27:40,524 INFO L78 Accepts]: Start accepts. Automaton has 7758 states and 10597 transitions. Word has length 70 [2021-12-15 11:27:40,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:40,524 INFO L470 AbstractCegarLoop]: Abstraction has 7758 states and 10597 transitions. [2021-12-15 11:27:40,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:40,525 INFO L276 IsEmpty]: Start isEmpty. Operand 7758 states and 10597 transitions. [2021-12-15 11:27:40,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-15 11:27:40,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:40,527 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:40,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-15 11:27:40,527 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:40,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:40,527 INFO L85 PathProgramCache]: Analyzing trace with hash -530798665, now seen corresponding path program 1 times [2021-12-15 11:27:40,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:40,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924428765] [2021-12-15 11:27:40,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:40,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:40,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:40,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924428765] [2021-12-15 11:27:40,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924428765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:40,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:40,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:40,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233417467] [2021-12-15 11:27:40,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:40,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:40,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:40,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:40,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:40,554 INFO L87 Difference]: Start difference. First operand 7758 states and 10597 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:42,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:42,136 INFO L93 Difference]: Finished difference Result 21018 states and 28863 transitions. [2021-12-15 11:27:42,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:42,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-15 11:27:42,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:42,154 INFO L225 Difference]: With dead ends: 21018 [2021-12-15 11:27:42,155 INFO L226 Difference]: Without dead ends: 13988 [2021-12-15 11:27:42,162 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:42,162 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 103 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:42,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 520 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:42,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13988 states. [2021-12-15 11:27:43,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13988 to 12770. [2021-12-15 11:27:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12770 states, 12769 states have (on average 1.3621270263920433) internal successors, (17393), 12769 states have internal predecessors, (17393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12770 states to 12770 states and 17393 transitions. [2021-12-15 11:27:43,791 INFO L78 Accepts]: Start accepts. Automaton has 12770 states and 17393 transitions. Word has length 70 [2021-12-15 11:27:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:43,791 INFO L470 AbstractCegarLoop]: Abstraction has 12770 states and 17393 transitions. [2021-12-15 11:27:43,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:43,791 INFO L276 IsEmpty]: Start isEmpty. Operand 12770 states and 17393 transitions. [2021-12-15 11:27:43,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-15 11:27:43,793 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:43,793 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:43,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-15 11:27:43,794 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:43,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:43,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1176069985, now seen corresponding path program 1 times [2021-12-15 11:27:43,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:43,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222156490] [2021-12-15 11:27:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:43,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:43,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:43,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222156490] [2021-12-15 11:27:43,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222156490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:43,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:43,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 11:27:43,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577288126] [2021-12-15 11:27:43,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:43,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 11:27:43,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:43,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 11:27:43,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 11:27:43,849 INFO L87 Difference]: Start difference. First operand 12770 states and 17393 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:47,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:47,326 INFO L93 Difference]: Finished difference Result 27444 states and 36726 transitions. [2021-12-15 11:27:47,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 11:27:47,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-12-15 11:27:47,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:47,366 INFO L225 Difference]: With dead ends: 27444 [2021-12-15 11:27:47,366 INFO L226 Difference]: Without dead ends: 27442 [2021-12-15 11:27:47,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:27:47,374 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 366 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:47,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 1277 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:47,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27442 states. [2021-12-15 11:27:49,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27442 to 14114. [2021-12-15 11:27:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14114 states, 14113 states have (on average 1.3276411818890386) internal successors, (18737), 14113 states have internal predecessors, (18737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:49,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14114 states to 14114 states and 18737 transitions. [2021-12-15 11:27:49,335 INFO L78 Accepts]: Start accepts. Automaton has 14114 states and 18737 transitions. Word has length 72 [2021-12-15 11:27:49,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:49,335 INFO L470 AbstractCegarLoop]: Abstraction has 14114 states and 18737 transitions. [2021-12-15 11:27:49,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:49,336 INFO L276 IsEmpty]: Start isEmpty. Operand 14114 states and 18737 transitions. [2021-12-15 11:27:49,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-15 11:27:49,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:49,338 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:49,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-15 11:27:49,338 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:49,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:49,339 INFO L85 PathProgramCache]: Analyzing trace with hash 406807320, now seen corresponding path program 1 times [2021-12-15 11:27:49,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:49,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60766147] [2021-12-15 11:27:49,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:49,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:49,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:49,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60766147] [2021-12-15 11:27:49,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60766147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:49,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:49,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:49,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678670403] [2021-12-15 11:27:49,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:49,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:49,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:49,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:49,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:49,378 INFO L87 Difference]: Start difference. First operand 14114 states and 18737 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) [2021-12-15 11:27:52,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:52,380 INFO L93 Difference]: Finished difference Result 34254 states and 45531 transitions. [2021-12-15 11:27:52,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:52,380 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 [2021-12-15 11:27:52,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:52,411 INFO L225 Difference]: With dead ends: 34254 [2021-12-15 11:27:52,412 INFO L226 Difference]: Without dead ends: 20868 [2021-12-15 11:27:52,429 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:27:52,430 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 169 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:52,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 398 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:52,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20868 states. [2021-12-15 11:27:55,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20868 to 20642. [2021-12-15 11:27:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20642 states, 20641 states have (on average 1.3069618720023255) internal successors, (26977), 20641 states have internal predecessors, (26977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:55,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20642 states to 20642 states and 26977 transitions. [2021-12-15 11:27:55,354 INFO L78 Accepts]: Start accepts. Automaton has 20642 states and 26977 transitions. Word has length 73 [2021-12-15 11:27:55,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:55,354 INFO L470 AbstractCegarLoop]: Abstraction has 20642 states and 26977 transitions. [2021-12-15 11:27:55,354 INFO L471 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) [2021-12-15 11:27:55,355 INFO L276 IsEmpty]: Start isEmpty. Operand 20642 states and 26977 transitions. [2021-12-15 11:27:55,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-15 11:27:55,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:55,357 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:27:55,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-15 11:27:55,357 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:55,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:55,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1519050461, now seen corresponding path program 1 times [2021-12-15 11:27:55,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:55,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416125952] [2021-12-15 11:27:55,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:55,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:27:55,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:55,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416125952] [2021-12-15 11:27:55,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416125952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:55,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:55,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 11:27:55,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743093126] [2021-12-15 11:27:55,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:55,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:27:55,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:55,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:27:55,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:27:55,394 INFO L87 Difference]: Start difference. First operand 20642 states and 26977 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:59,183 INFO L93 Difference]: Finished difference Result 30546 states and 40159 transitions. [2021-12-15 11:27:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:27:59,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-15 11:27:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:59,222 INFO L225 Difference]: With dead ends: 30546 [2021-12-15 11:27:59,222 INFO L226 Difference]: Without dead ends: 25972 [2021-12-15 11:27:59,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-15 11:27:59,234 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 592 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:59,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 871 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:59,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25972 states. [2021-12-15 11:28:02,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25972 to 23626. [2021-12-15 11:28:02,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23626 states, 23625 states have (on average 1.304) internal successors, (30807), 23625 states have internal predecessors, (30807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:02,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23626 states to 23626 states and 30807 transitions. [2021-12-15 11:28:02,585 INFO L78 Accepts]: Start accepts. Automaton has 23626 states and 30807 transitions. Word has length 74 [2021-12-15 11:28:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:02,585 INFO L470 AbstractCegarLoop]: Abstraction has 23626 states and 30807 transitions. [2021-12-15 11:28:02,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:02,585 INFO L276 IsEmpty]: Start isEmpty. Operand 23626 states and 30807 transitions. [2021-12-15 11:28:02,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-15 11:28:02,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:02,588 INFO L514 BasicCegarLoop]: 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] [2021-12-15 11:28:02,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-15 11:28:02,588 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:28:02,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:02,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1521012015, now seen corresponding path program 1 times [2021-12-15 11:28:02,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:02,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486817909] [2021-12-15 11:28:02,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:02,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:28:02,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:02,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486817909] [2021-12-15 11:28:02,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486817909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:02,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:02,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 11:28:02,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821917842] [2021-12-15 11:28:02,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:02,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:28:02,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:02,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:28:02,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:28:02,625 INFO L87 Difference]: Start difference. First operand 23626 states and 30807 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2021-12-15 11:28:06,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:06,593 INFO L93 Difference]: Finished difference Result 34866 states and 45763 transitions. [2021-12-15 11:28:06,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:28:06,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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 [2021-12-15 11:28:06,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:06,632 INFO L225 Difference]: With dead ends: 34866 [2021-12-15 11:28:06,632 INFO L226 Difference]: Without dead ends: 28096 [2021-12-15 11:28:06,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-15 11:28:06,646 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 640 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:06,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 781 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:28:06,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28096 states. [2021-12-15 11:28:10,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28096 to 27282. [2021-12-15 11:28:10,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27282 states, 27281 states have (on average 1.2999156922400206) internal successors, (35463), 27281 states have internal predecessors, (35463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:10,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27282 states to 27282 states and 35463 transitions. [2021-12-15 11:28:10,836 INFO L78 Accepts]: Start accepts. Automaton has 27282 states and 35463 transitions. Word has length 77 [2021-12-15 11:28:10,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:10,836 INFO L470 AbstractCegarLoop]: Abstraction has 27282 states and 35463 transitions. [2021-12-15 11:28:10,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2021-12-15 11:28:10,836 INFO L276 IsEmpty]: Start isEmpty. Operand 27282 states and 35463 transitions. [2021-12-15 11:28:10,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-15 11:28:10,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:10,844 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:28:10,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-15 11:28:10,844 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:28:10,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:10,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1899335398, now seen corresponding path program 1 times [2021-12-15 11:28:10,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:10,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185449304] [2021-12-15 11:28:10,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:10,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:10,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-15 11:28:10,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:10,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185449304] [2021-12-15 11:28:10,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185449304] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:10,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:10,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:28:10,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858449614] [2021-12-15 11:28:10,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:10,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:28:10,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:10,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:28:10,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:28:10,918 INFO L87 Difference]: Start difference. First operand 27282 states and 35463 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)