./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 16f1bfcdafcb30da29b0067c09066abcd5ae81f862f6e318335df039804ff932 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:27:40,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:27:40,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:27:40,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:27:40,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:27:40,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:27:40,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:27:40,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:27:40,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:27:40,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:27:40,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:27:40,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:27:40,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:27:40,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:27:40,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:27:40,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:27:40,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:27:40,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:27:40,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:27:40,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:27:40,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:27:40,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:27:40,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:27:40,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:27:40,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:27:40,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:27:40,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:27:40,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:27:40,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:27:40,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:27:40,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:27:40,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:27:40,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:27:40,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:27:40,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:27:40,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:27:40,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:27:40,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:27:40,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:27:40,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:27:40,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:27:40,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:27:40,527 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:27:40,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:27:40,530 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:27:40,530 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:27:40,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:27:40,531 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:27:40,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:27:40,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:27:40,532 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:27:40,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:27:40,533 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:27:40,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:27:40,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:27:40,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:27:40,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:27:40,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:27:40,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:27:40,535 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:27:40,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:27:40,535 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:27:40,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:27:40,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:27:40,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:27:40,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:27:40,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:27:40,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:27:40,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:27:40,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:27:40,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:27:40,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:27:40,537 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:27:40,538 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:27:40,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:27:40,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:27:40,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16f1bfcdafcb30da29b0067c09066abcd5ae81f862f6e318335df039804ff932 [2021-12-15 11:27:40,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:27:40,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:27:40,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:27:40,774 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:27:40,775 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:27:40,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-15 11:27:40,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baee4479c/df3a03437bbb4a34a065d32a1c65eb10/FLAGb54ab4501 [2021-12-15 11:27:41,316 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:27:41,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-15 11:27:41,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baee4479c/df3a03437bbb4a34a065d32a1c65eb10/FLAGb54ab4501 [2021-12-15 11:27:41,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baee4479c/df3a03437bbb4a34a065d32a1c65eb10 [2021-12-15 11:27:41,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:27:41,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:27:41,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:27:41,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:27:41,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:27:41,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:27:41" (1/1) ... [2021-12-15 11:27:41,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d5ebb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:41, skipping insertion in model container [2021-12-15 11:27:41,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:27:41" (1/1) ... [2021-12-15 11:27:41,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:27:41,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:27:41,915 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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8112,8125] [2021-12-15 11:27:41,948 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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14224,14237] [2021-12-15 11:27:41,960 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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16311,16324] [2021-12-15 11:27:41,965 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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17335,17348] [2021-12-15 11:27:42,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:27:42,139 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:27:42,178 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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8112,8125] [2021-12-15 11:27:42,198 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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14224,14237] [2021-12-15 11:27:42,207 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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16311,16324] [2021-12-15 11:27:42,211 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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17335,17348] [2021-12-15 11:27:42,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:27:42,352 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:27:42,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:42 WrapperNode [2021-12-15 11:27:42,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:27:42,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:27:42,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:27:42,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:27:42,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:42" (1/1) ... [2021-12-15 11:27:42,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:42" (1/1) ... [2021-12-15 11:27:42,480 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2377 [2021-12-15 11:27:42,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:27:42,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:27:42,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:27:42,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:27:42,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:42" (1/1) ... [2021-12-15 11:27:42,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:42" (1/1) ... [2021-12-15 11:27:42,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:42" (1/1) ... [2021-12-15 11:27:42,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:42" (1/1) ... [2021-12-15 11:27:42,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:42" (1/1) ... [2021-12-15 11:27:42,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:42" (1/1) ... [2021-12-15 11:27:42,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:42" (1/1) ... [2021-12-15 11:27:42,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:27:42,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:27:42,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:27:42,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:27:42,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:42" (1/1) ... [2021-12-15 11:27:42,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:27:42,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:27:42,596 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 11:27:42,611 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 11:27:42,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:27:42,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:27:42,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:27:42,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:27:42,841 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:27:42,842 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:27:43,814 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:27:43,831 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:27:43,831 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 11:27:43,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:27:43 BoogieIcfgContainer [2021-12-15 11:27:43,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:27:43,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:27:43,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:27:43,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:27:43,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:27:41" (1/3) ... [2021-12-15 11:27:43,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af24ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:27:43, skipping insertion in model container [2021-12-15 11:27:43,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:27:42" (2/3) ... [2021-12-15 11:27:43,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af24ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:27:43, skipping insertion in model container [2021-12-15 11:27:43,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:27:43" (3/3) ... [2021-12-15 11:27:43,842 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-15 11:27:43,846 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:27:43,847 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-15 11:27:43,902 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:27:43,908 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 11:27:43,909 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-15 11:27:43,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 441 states, 436 states have (on average 1.8577981651376148) internal successors, (810), 440 states have internal predecessors, (810), 0 states have call successors, (0), 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 11:27:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-15 11:27:43,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:43,962 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] [2021-12-15 11:27:43,963 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 11:27:43,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:43,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1113444986, now seen corresponding path program 1 times [2021-12-15 11:27:43,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:43,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983455437] [2021-12-15 11:27:43,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:43,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:44,279 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 11:27:44,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:44,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983455437] [2021-12-15 11:27:44,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983455437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:44,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:44,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:44,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024577503] [2021-12-15 11:27:44,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:44,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:44,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:44,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:44,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:44,320 INFO L87 Difference]: Start difference. First operand has 441 states, 436 states have (on average 1.8577981651376148) internal successors, (810), 440 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:44,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:44,445 INFO L93 Difference]: Finished difference Result 689 states and 1213 transitions. [2021-12-15 11:27:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:44,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-12-15 11:27:44,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:44,463 INFO L225 Difference]: With dead ends: 689 [2021-12-15 11:27:44,463 INFO L226 Difference]: Without dead ends: 545 [2021-12-15 11:27:44,466 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 11:27:44,471 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 422 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:44,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 1356 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:44,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-12-15 11:27:44,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 539. [2021-12-15 11:27:44,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 535 states have (on average 1.3420560747663552) internal successors, (718), 538 states have internal predecessors, (718), 0 states have call successors, (0), 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 11:27:44,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 718 transitions. [2021-12-15 11:27:44,536 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 718 transitions. Word has length 49 [2021-12-15 11:27:44,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:44,537 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 718 transitions. [2021-12-15 11:27:44,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:44,537 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 718 transitions. [2021-12-15 11:27:44,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-15 11:27:44,539 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:44,539 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] [2021-12-15 11:27:44,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:27:44,540 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:44,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:44,541 INFO L85 PathProgramCache]: Analyzing trace with hash 969247668, now seen corresponding path program 1 times [2021-12-15 11:27:44,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:44,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996919553] [2021-12-15 11:27:44,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:44,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:44,633 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 11:27:44,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:44,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996919553] [2021-12-15 11:27:44,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996919553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:44,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:44,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:44,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957652344] [2021-12-15 11:27:44,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:44,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:44,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:44,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:44,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:44,637 INFO L87 Difference]: Start difference. First operand 539 states and 718 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:44,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:44,692 INFO L93 Difference]: Finished difference Result 954 states and 1328 transitions. [2021-12-15 11:27:44,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:44,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-12-15 11:27:44,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:44,699 INFO L225 Difference]: With dead ends: 954 [2021-12-15 11:27:44,699 INFO L226 Difference]: Without dead ends: 713 [2021-12-15 11:27:44,703 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 11:27:44,705 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 238 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1022 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 11:27:44,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 1022 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:44,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-12-15 11:27:44,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 707. [2021-12-15 11:27:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 703 states have (on average 1.3655761024182076) internal successors, (960), 706 states have internal predecessors, (960), 0 states have call successors, (0), 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 11:27:44,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 960 transitions. [2021-12-15 11:27:44,740 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 960 transitions. Word has length 49 [2021-12-15 11:27:44,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:44,741 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 960 transitions. [2021-12-15 11:27:44,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:44,741 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 960 transitions. [2021-12-15 11:27:44,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-15 11:27:44,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:44,743 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] [2021-12-15 11:27:44,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 11:27:44,743 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:44,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:44,744 INFO L85 PathProgramCache]: Analyzing trace with hash 533282259, now seen corresponding path program 1 times [2021-12-15 11:27:44,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:44,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429756195] [2021-12-15 11:27:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:44,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:44,838 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 11:27:44,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:44,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429756195] [2021-12-15 11:27:44,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429756195] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:44,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:44,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:44,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109586671] [2021-12-15 11:27:44,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:44,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:44,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:44,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:44,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:44,841 INFO L87 Difference]: Start difference. First operand 707 states and 960 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:44,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:44,942 INFO L93 Difference]: Finished difference Result 1363 states and 1911 transitions. [2021-12-15 11:27:44,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:44,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-12-15 11:27:44,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:44,947 INFO L225 Difference]: With dead ends: 1363 [2021-12-15 11:27:44,948 INFO L226 Difference]: Without dead ends: 1034 [2021-12-15 11:27:44,949 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 11:27:44,953 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 299 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:44,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 997 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 11:27:44,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-12-15 11:27:44,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1027. [2021-12-15 11:27:44,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1023 states have (on average 1.380254154447703) internal successors, (1412), 1026 states have internal predecessors, (1412), 0 states have call successors, (0), 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 11:27:44,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1412 transitions. [2021-12-15 11:27:44,991 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1412 transitions. Word has length 49 [2021-12-15 11:27:44,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:44,993 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 1412 transitions. [2021-12-15 11:27:44,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:44,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1412 transitions. [2021-12-15 11:27:44,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-15 11:27:44,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:44,996 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] [2021-12-15 11:27:44,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 11:27:44,997 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:44,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:44,998 INFO L85 PathProgramCache]: Analyzing trace with hash 388998377, now seen corresponding path program 1 times [2021-12-15 11:27:44,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:44,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640069603] [2021-12-15 11:27:44,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:44,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:45,111 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 11:27:45,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:45,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640069603] [2021-12-15 11:27:45,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640069603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:45,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:45,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:27:45,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585360627] [2021-12-15 11:27:45,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:45,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:27:45,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:45,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:27:45,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:27:45,114 INFO L87 Difference]: Start difference. First operand 1027 states and 1412 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:45,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:45,462 INFO L93 Difference]: Finished difference Result 2116 states and 2959 transitions. [2021-12-15 11:27:45,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:27:45,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-12-15 11:27:45,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:45,468 INFO L225 Difference]: With dead ends: 2116 [2021-12-15 11:27:45,468 INFO L226 Difference]: Without dead ends: 1254 [2021-12-15 11:27:45,473 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 11:27:45,479 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 1692 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:45,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 403 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 11:27:45,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-12-15 11:27:45,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1244. [2021-12-15 11:27:45,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1240 states have (on average 1.3935483870967742) internal successors, (1728), 1243 states have internal predecessors, (1728), 0 states have call successors, (0), 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 11:27:45,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1728 transitions. [2021-12-15 11:27:45,531 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1728 transitions. Word has length 49 [2021-12-15 11:27:45,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:45,531 INFO L470 AbstractCegarLoop]: Abstraction has 1244 states and 1728 transitions. [2021-12-15 11:27:45,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:27:45,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1728 transitions. [2021-12-15 11:27:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-15 11:27:45,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:45,534 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 11:27:45,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 11:27:45,535 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:45,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:45,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1582595724, now seen corresponding path program 1 times [2021-12-15 11:27:45,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:45,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359997792] [2021-12-15 11:27:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:45,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:45,604 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 11:27:45,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:45,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359997792] [2021-12-15 11:27:45,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359997792] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:45,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:45,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:27:45,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053378499] [2021-12-15 11:27:45,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:45,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:27:45,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:45,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:27:45,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:27:45,607 INFO L87 Difference]: Start difference. First operand 1244 states and 1728 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 11:27:45,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:45,928 INFO L93 Difference]: Finished difference Result 2671 states and 3751 transitions. [2021-12-15 11:27:45,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:27:45,929 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 11:27:45,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:45,935 INFO L225 Difference]: With dead ends: 2671 [2021-12-15 11:27:45,935 INFO L226 Difference]: Without dead ends: 1592 [2021-12-15 11:27:45,938 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 11:27:45,939 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 1492 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:45,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1492 Valid, 360 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 11:27:45,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2021-12-15 11:27:46,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1579. [2021-12-15 11:27:46,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1575 states have (on average 1.3911111111111112) internal successors, (2191), 1578 states have internal predecessors, (2191), 0 states have call successors, (0), 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 11:27:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 2191 transitions. [2021-12-15 11:27:46,029 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 2191 transitions. Word has length 50 [2021-12-15 11:27:46,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:46,030 INFO L470 AbstractCegarLoop]: Abstraction has 1579 states and 2191 transitions. [2021-12-15 11:27:46,030 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 11:27:46,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 2191 transitions. [2021-12-15 11:27:46,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-15 11:27:46,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:46,036 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 11:27:46,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 11:27:46,037 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 11:27:46,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:46,038 INFO L85 PathProgramCache]: Analyzing trace with hash 812162954, now seen corresponding path program 1 times [2021-12-15 11:27:46,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:46,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976124831] [2021-12-15 11:27:46,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:46,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:46,112 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 11:27:46,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:46,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976124831] [2021-12-15 11:27:46,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976124831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:46,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:46,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:27:46,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491245648] [2021-12-15 11:27:46,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:46,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:27:46,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:46,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:27:46,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:27:46,117 INFO L87 Difference]: Start difference. First operand 1579 states and 2191 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 11:27:46,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:46,425 INFO L93 Difference]: Finished difference Result 3496 states and 4904 transitions. [2021-12-15 11:27:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:27:46,426 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 11:27:46,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:46,434 INFO L225 Difference]: With dead ends: 3496 [2021-12-15 11:27:46,434 INFO L226 Difference]: Without dead ends: 2079 [2021-12-15 11:27:46,436 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 11:27:46,437 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 1349 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:46,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1349 Valid, 328 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 11:27:46,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2021-12-15 11:27:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 1520. [2021-12-15 11:27:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1516 states have (on average 1.3885224274406331) internal successors, (2105), 1519 states have internal predecessors, (2105), 0 states have call successors, (0), 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 11:27:46,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2105 transitions. [2021-12-15 11:27:46,517 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2105 transitions. Word has length 51 [2021-12-15 11:27:46,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:46,517 INFO L470 AbstractCegarLoop]: Abstraction has 1520 states and 2105 transitions. [2021-12-15 11:27:46,517 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 11:27:46,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2105 transitions. [2021-12-15 11:27:46,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-15 11:27:46,519 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:46,519 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 11:27:46,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 11:27:46,520 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:46,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:46,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2025988922, now seen corresponding path program 1 times [2021-12-15 11:27:46,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:46,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640753279] [2021-12-15 11:27:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:46,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:46,583 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 11:27:46,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:46,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640753279] [2021-12-15 11:27:46,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640753279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:46,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:46,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 11:27:46,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804224261] [2021-12-15 11:27:46,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:46,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 11:27:46,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:46,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 11:27:46,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 11:27:46,585 INFO L87 Difference]: Start difference. First operand 1520 states and 2105 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 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 11:27:47,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:47,231 INFO L93 Difference]: Finished difference Result 4981 states and 7069 transitions. [2021-12-15 11:27:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 11:27:47,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 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 11:27:47,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:47,247 INFO L225 Difference]: With dead ends: 4981 [2021-12-15 11:27:47,248 INFO L226 Difference]: Without dead ends: 4548 [2021-12-15 11:27:47,250 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 11:27:47,251 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 3000 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3000 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:47,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3000 Valid, 633 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 11:27:47,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2021-12-15 11:27:47,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 1532. [2021-12-15 11:27:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1528 states have (on average 1.388089005235602) internal successors, (2121), 1531 states have internal predecessors, (2121), 0 states have call successors, (0), 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 11:27:47,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 2121 transitions. [2021-12-15 11:27:47,378 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 2121 transitions. Word has length 51 [2021-12-15 11:27:47,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:47,378 INFO L470 AbstractCegarLoop]: Abstraction has 1532 states and 2121 transitions. [2021-12-15 11:27:47,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 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 11:27:47,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 2121 transitions. [2021-12-15 11:27:47,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-15 11:27:47,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:47,380 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 11:27:47,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 11:27:47,380 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 11:27:47,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:47,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1769009660, now seen corresponding path program 1 times [2021-12-15 11:27:47,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:47,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255760570] [2021-12-15 11:27:47,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:47,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:47,477 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 11:27:47,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:47,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255760570] [2021-12-15 11:27:47,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255760570] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:47,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:47,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 11:27:47,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911845591] [2021-12-15 11:27:47,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:47,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 11:27:47,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:47,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 11:27:47,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 11:27:47,480 INFO L87 Difference]: Start difference. First operand 1532 states and 2121 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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 11:27:48,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:48,199 INFO L93 Difference]: Finished difference Result 5316 states and 7567 transitions. [2021-12-15 11:27:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 11:27:48,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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 11:27:48,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:48,217 INFO L225 Difference]: With dead ends: 5316 [2021-12-15 11:27:48,217 INFO L226 Difference]: Without dead ends: 4768 [2021-12-15 11:27:48,219 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 11:27:48,220 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 1905 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:48,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1905 Valid, 726 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 11:27:48,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4768 states. [2021-12-15 11:27:48,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4768 to 1554. [2021-12-15 11:27:48,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1550 states have (on average 1.3883870967741936) internal successors, (2152), 1553 states have internal predecessors, (2152), 0 states have call successors, (0), 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 11:27:48,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2152 transitions. [2021-12-15 11:27:48,354 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2152 transitions. Word has length 52 [2021-12-15 11:27:48,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:48,354 INFO L470 AbstractCegarLoop]: Abstraction has 1554 states and 2152 transitions. [2021-12-15 11:27:48,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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 11:27:48,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2152 transitions. [2021-12-15 11:27:48,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-15 11:27:48,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:48,356 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 11:27:48,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 11:27:48,356 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:48,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:48,357 INFO L85 PathProgramCache]: Analyzing trace with hash -990817093, now seen corresponding path program 1 times [2021-12-15 11:27:48,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:48,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288163914] [2021-12-15 11:27:48,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:48,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:48,413 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 11:27:48,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:48,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288163914] [2021-12-15 11:27:48,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288163914] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:48,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:48,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 11:27:48,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352543057] [2021-12-15 11:27:48,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:48,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 11:27:48,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:48,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 11:27:48,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 11:27:48,416 INFO L87 Difference]: Start difference. First operand 1554 states and 2152 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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 11:27:49,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:49,082 INFO L93 Difference]: Finished difference Result 4979 states and 7033 transitions. [2021-12-15 11:27:49,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 11:27:49,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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 11:27:49,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:49,097 INFO L225 Difference]: With dead ends: 4979 [2021-12-15 11:27:49,097 INFO L226 Difference]: Without dead ends: 4264 [2021-12-15 11:27:49,100 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 11:27:49,102 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 2523 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:49,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2523 Valid, 591 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 11:27:49,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2021-12-15 11:27:49,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 1568. [2021-12-15 11:27:49,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1564 states have (on average 1.3874680306905371) internal successors, (2170), 1567 states have internal predecessors, (2170), 0 states have call successors, (0), 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 11:27:49,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2170 transitions. [2021-12-15 11:27:49,254 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2170 transitions. Word has length 52 [2021-12-15 11:27:49,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:49,254 INFO L470 AbstractCegarLoop]: Abstraction has 1568 states and 2170 transitions. [2021-12-15 11:27:49,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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 11:27:49,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2170 transitions. [2021-12-15 11:27:49,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-15 11:27:49,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:49,257 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 11:27:49,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 11:27:49,257 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 11:27:49,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:49,258 INFO L85 PathProgramCache]: Analyzing trace with hash 851488073, now seen corresponding path program 1 times [2021-12-15 11:27:49,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:49,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478995210] [2021-12-15 11:27:49,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:49,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:49,373 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 11:27:49,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:49,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478995210] [2021-12-15 11:27:49,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478995210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:49,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:49,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 11:27:49,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814993187] [2021-12-15 11:27:49,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:49,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 11:27:49,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:49,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 11:27:49,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-15 11:27:49,376 INFO L87 Difference]: Start difference. First operand 1568 states and 2170 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 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 11:27:50,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:50,115 INFO L93 Difference]: Finished difference Result 4266 states and 6030 transitions. [2021-12-15 11:27:50,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 11:27:50,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 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 11:27:50,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:50,126 INFO L225 Difference]: With dead ends: 4266 [2021-12-15 11:27:50,126 INFO L226 Difference]: Without dead ends: 3216 [2021-12-15 11:27:50,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-12-15 11:27:50,128 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 1992 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:50,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 1197 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 11:27:50,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2021-12-15 11:27:50,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 1568. [2021-12-15 11:27:50,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1564 states have (on average 1.3842710997442456) internal successors, (2165), 1567 states have internal predecessors, (2165), 0 states have call successors, (0), 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 11:27:50,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2165 transitions. [2021-12-15 11:27:50,247 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2165 transitions. Word has length 53 [2021-12-15 11:27:50,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:50,247 INFO L470 AbstractCegarLoop]: Abstraction has 1568 states and 2165 transitions. [2021-12-15 11:27:50,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 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 11:27:50,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2165 transitions. [2021-12-15 11:27:50,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-15 11:27:50,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:50,249 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 11:27:50,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 11:27:50,250 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 11:27:50,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:50,250 INFO L85 PathProgramCache]: Analyzing trace with hash 707290755, now seen corresponding path program 1 times [2021-12-15 11:27:50,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:50,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279782562] [2021-12-15 11:27:50,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:50,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:50,373 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 11:27:50,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:50,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279782562] [2021-12-15 11:27:50,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279782562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:50,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:50,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:27:50,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907901703] [2021-12-15 11:27:50,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:50,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:27:50,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:50,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:27:50,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:27:50,376 INFO L87 Difference]: Start difference. First operand 1568 states and 2165 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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 11:27:51,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:51,378 INFO L93 Difference]: Finished difference Result 5269 states and 7539 transitions. [2021-12-15 11:27:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:27:51,379 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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 11:27:51,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:51,392 INFO L225 Difference]: With dead ends: 5269 [2021-12-15 11:27:51,393 INFO L226 Difference]: Without dead ends: 4353 [2021-12-15 11:27:51,395 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 11:27:51,396 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 1989 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:51,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1989 Valid, 1519 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-15 11:27:51,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2021-12-15 11:27:51,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 1539. [2021-12-15 11:27:51,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1535 states have (on average 1.3837133550488598) internal successors, (2124), 1538 states have internal predecessors, (2124), 0 states have call successors, (0), 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 11:27:51,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 2124 transitions. [2021-12-15 11:27:51,534 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 2124 transitions. Word has length 53 [2021-12-15 11:27:51,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:51,535 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 2124 transitions. [2021-12-15 11:27:51,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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 11:27:51,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 2124 transitions. [2021-12-15 11:27:51,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-15 11:27:51,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:51,537 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 11:27:51,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 11:27:51,538 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 11:27:51,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:51,538 INFO L85 PathProgramCache]: Analyzing trace with hash -843330776, now seen corresponding path program 1 times [2021-12-15 11:27:51,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:51,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104987953] [2021-12-15 11:27:51,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:51,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:51,639 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 11:27:51,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:51,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104987953] [2021-12-15 11:27:51,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104987953] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:51,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:51,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:27:51,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239513072] [2021-12-15 11:27:51,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:51,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:27:51,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:51,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:27:51,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:27:51,641 INFO L87 Difference]: Start difference. First operand 1539 states and 2124 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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 11:27:52,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:52,705 INFO L93 Difference]: Finished difference Result 4591 states and 6532 transitions. [2021-12-15 11:27:52,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-15 11:27:52,706 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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 11:27:52,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:52,714 INFO L225 Difference]: With dead ends: 4591 [2021-12-15 11:27:52,714 INFO L226 Difference]: Without dead ends: 4586 [2021-12-15 11:27:52,716 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 11:27:52,716 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 1601 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:52,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1601 Valid, 1527 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-15 11:27:52,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2021-12-15 11:27:52,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 1539. [2021-12-15 11:27:52,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1535 states have (on average 1.3824104234527688) internal successors, (2122), 1538 states have internal predecessors, (2122), 0 states have call successors, (0), 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 11:27:52,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 2122 transitions. [2021-12-15 11:27:52,861 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 2122 transitions. Word has length 53 [2021-12-15 11:27:52,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:52,861 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 2122 transitions. [2021-12-15 11:27:52,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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 11:27:52,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 2122 transitions. [2021-12-15 11:27:52,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-15 11:27:52,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:52,863 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 11:27:52,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 11:27:52,864 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:52,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:52,864 INFO L85 PathProgramCache]: Analyzing trace with hash 686286721, now seen corresponding path program 1 times [2021-12-15 11:27:52,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:52,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102000037] [2021-12-15 11:27:52,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:52,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:52,897 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 11:27:52,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:52,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102000037] [2021-12-15 11:27:52,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102000037] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:52,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:52,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:52,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797795730] [2021-12-15 11:27:52,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:52,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:52,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:52,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:52,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:52,900 INFO L87 Difference]: Start difference. First operand 1539 states and 2122 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 11:27:53,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:53,033 INFO L93 Difference]: Finished difference Result 2067 states and 2850 transitions. [2021-12-15 11:27:53,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:53,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 11:27:53,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:53,037 INFO L225 Difference]: With dead ends: 2067 [2021-12-15 11:27:53,037 INFO L226 Difference]: Without dead ends: 1508 [2021-12-15 11:27:53,039 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 11:27:53,039 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 259 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 676 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 11:27:53,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 676 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2021-12-15 11:27:53,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1506. [2021-12-15 11:27:53,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1502 states have (on average 1.3535286284953396) internal successors, (2033), 1505 states have internal predecessors, (2033), 0 states have call successors, (0), 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 11:27:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2033 transitions. [2021-12-15 11:27:53,166 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2033 transitions. Word has length 54 [2021-12-15 11:27:53,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:53,166 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 2033 transitions. [2021-12-15 11:27:53,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 11:27:53,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2033 transitions. [2021-12-15 11:27:53,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-15 11:27:53,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:53,168 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 11:27:53,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 11:27:53,169 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:53,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:53,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1437497679, now seen corresponding path program 1 times [2021-12-15 11:27:53,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:53,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479135554] [2021-12-15 11:27:53,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:53,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:53,204 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 11:27:53,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:53,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479135554] [2021-12-15 11:27:53,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479135554] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:53,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:53,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:53,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027813959] [2021-12-15 11:27:53,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:53,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:53,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:53,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:53,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:53,207 INFO L87 Difference]: Start difference. First operand 1506 states and 2033 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 11:27:53,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:53,360 INFO L93 Difference]: Finished difference Result 2126 states and 2896 transitions. [2021-12-15 11:27:53,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:53,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 11:27:53,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:53,363 INFO L225 Difference]: With dead ends: 2126 [2021-12-15 11:27:53,363 INFO L226 Difference]: Without dead ends: 1513 [2021-12-15 11:27:53,364 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 11:27:53,364 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 208 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 746 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 11:27:53,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 746 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:53,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2021-12-15 11:27:53,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1506. [2021-12-15 11:27:53,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1502 states have (on average 1.3382157123834886) internal successors, (2010), 1505 states have internal predecessors, (2010), 0 states have call successors, (0), 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 11:27:53,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2010 transitions. [2021-12-15 11:27:53,470 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2010 transitions. Word has length 54 [2021-12-15 11:27:53,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:53,471 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 2010 transitions. [2021-12-15 11:27:53,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 11:27:53,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2010 transitions. [2021-12-15 11:27:53,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-15 11:27:53,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:53,473 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 11:27:53,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 11:27:53,473 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:53,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:53,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1063900683, now seen corresponding path program 1 times [2021-12-15 11:27:53,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:53,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039933509] [2021-12-15 11:27:53,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:53,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:53,505 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 11:27:53,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:53,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039933509] [2021-12-15 11:27:53,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039933509] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:53,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:53,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:53,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858236445] [2021-12-15 11:27:53,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:53,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:53,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:53,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:53,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:53,507 INFO L87 Difference]: Start difference. First operand 1506 states and 2010 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 11:27:53,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:53,627 INFO L93 Difference]: Finished difference Result 2163 states and 2914 transitions. [2021-12-15 11:27:53,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:53,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 11:27:53,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:53,630 INFO L225 Difference]: With dead ends: 2163 [2021-12-15 11:27:53,630 INFO L226 Difference]: Without dead ends: 1512 [2021-12-15 11:27:53,631 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 11:27:53,631 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 224 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 753 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 11:27:53,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 753 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:53,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2021-12-15 11:27:53,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1506. [2021-12-15 11:27:53,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1502 states have (on average 1.3262316910785619) internal successors, (1992), 1505 states have internal predecessors, (1992), 0 states have call successors, (0), 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 11:27:53,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 1992 transitions. [2021-12-15 11:27:53,725 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 1992 transitions. Word has length 54 [2021-12-15 11:27:53,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:53,725 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 1992 transitions. [2021-12-15 11:27:53,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 11:27:53,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 1992 transitions. [2021-12-15 11:27:53,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-15 11:27:53,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:53,727 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 11:27:53,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 11:27:53,728 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:27:53,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:53,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1050867566, now seen corresponding path program 1 times [2021-12-15 11:27:53,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:53,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36985018] [2021-12-15 11:27:53,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:53,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:53,757 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 11:27:53,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:53,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36985018] [2021-12-15 11:27:53,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36985018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:53,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:53,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:53,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840090346] [2021-12-15 11:27:53,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:53,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:53,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:53,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:53,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:53,759 INFO L87 Difference]: Start difference. First operand 1506 states and 1992 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 11:27:53,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:53,932 INFO L93 Difference]: Finished difference Result 2664 states and 3567 transitions. [2021-12-15 11:27:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:53,932 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 11:27:53,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:53,935 INFO L225 Difference]: With dead ends: 2664 [2021-12-15 11:27:53,935 INFO L226 Difference]: Without dead ends: 1794 [2021-12-15 11:27:53,937 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 11:27:53,937 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 286 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:53,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 467 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:53,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2021-12-15 11:27:54,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1426. [2021-12-15 11:27:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1422 states have (on average 1.3284106891701828) internal successors, (1889), 1425 states have internal predecessors, (1889), 0 states have call successors, (0), 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 11:27:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1889 transitions. [2021-12-15 11:27:54,073 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1889 transitions. Word has length 56 [2021-12-15 11:27:54,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:54,073 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 1889 transitions. [2021-12-15 11:27:54,073 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 11:27:54,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1889 transitions. [2021-12-15 11:27:54,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-15 11:27:54,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:54,075 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 11:27:54,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-15 11:27:54,076 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 11:27:54,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:54,076 INFO L85 PathProgramCache]: Analyzing trace with hash 762441294, now seen corresponding path program 1 times [2021-12-15 11:27:54,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:54,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383604769] [2021-12-15 11:27:54,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:54,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:54,103 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 11:27:54,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:54,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383604769] [2021-12-15 11:27:54,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383604769] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:54,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:54,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:27:54,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161163314] [2021-12-15 11:27:54,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:54,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:27:54,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:54,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:27:54,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:27:54,106 INFO L87 Difference]: Start difference. First operand 1426 states and 1889 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 11:27:54,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:54,293 INFO L93 Difference]: Finished difference Result 2528 states and 3386 transitions. [2021-12-15 11:27:54,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:27:54,293 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 11:27:54,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:54,297 INFO L225 Difference]: With dead ends: 2528 [2021-12-15 11:27:54,297 INFO L226 Difference]: Without dead ends: 1704 [2021-12-15 11:27:54,298 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 11:27:54,299 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 250 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:54,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 397 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:27:54,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2021-12-15 11:27:54,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1328. [2021-12-15 11:27:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1324 states have (on average 1.3330815709969788) internal successors, (1765), 1327 states have internal predecessors, (1765), 0 states have call successors, (0), 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 11:27:54,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1765 transitions. [2021-12-15 11:27:54,449 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1765 transitions. Word has length 56 [2021-12-15 11:27:54,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:54,449 INFO L470 AbstractCegarLoop]: Abstraction has 1328 states and 1765 transitions. [2021-12-15 11:27:54,449 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 11:27:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1765 transitions. [2021-12-15 11:27:54,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-15 11:27:54,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:54,451 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 11:27:54,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-15 11:27:54,452 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 11:27:54,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:54,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1334330377, now seen corresponding path program 1 times [2021-12-15 11:27:54,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:54,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474327847] [2021-12-15 11:27:54,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:54,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:54,765 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 11:27:54,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:54,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474327847] [2021-12-15 11:27:54,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474327847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:54,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:54,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-15 11:27:54,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390296453] [2021-12-15 11:27:54,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:54,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-15 11:27:54,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:54,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-15 11:27:54,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-15 11:27:54,766 INFO L87 Difference]: Start difference. First operand 1328 states and 1765 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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 11:27:56,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:56,271 INFO L93 Difference]: Finished difference Result 5067 states and 6951 transitions. [2021-12-15 11:27:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-15 11:27:56,271 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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 11:27:56,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:56,279 INFO L225 Difference]: With dead ends: 5067 [2021-12-15 11:27:56,280 INFO L226 Difference]: Without dead ends: 4861 [2021-12-15 11:27:56,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=671, Unknown=0, NotChecked=0, Total=870 [2021-12-15 11:27:56,282 INFO L933 BasicCegarLoop]: 520 mSDtfsCounter, 2886 mSDsluCounter, 3862 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2886 SdHoareTripleChecker+Valid, 4382 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:56,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2886 Valid, 4382 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-15 11:27:56,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4861 states. [2021-12-15 11:27:56,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4861 to 1303. [2021-12-15 11:27:56,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1300 states have (on average 1.3346153846153845) internal successors, (1735), 1302 states have internal predecessors, (1735), 0 states have call successors, (0), 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 11:27:56,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1735 transitions. [2021-12-15 11:27:56,484 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1735 transitions. Word has length 56 [2021-12-15 11:27:56,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:56,484 INFO L470 AbstractCegarLoop]: Abstraction has 1303 states and 1735 transitions. [2021-12-15 11:27:56,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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 11:27:56,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1735 transitions. [2021-12-15 11:27:56,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-15 11:27:56,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:56,486 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 11:27:56,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-15 11:27:56,486 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 11:27:56,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:56,487 INFO L85 PathProgramCache]: Analyzing trace with hash -2094820174, now seen corresponding path program 1 times [2021-12-15 11:27:56,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:56,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558559241] [2021-12-15 11:27:56,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:56,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:56,777 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 11:27:56,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:56,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558559241] [2021-12-15 11:27:56,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558559241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:56,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:56,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-15 11:27:56,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898148044] [2021-12-15 11:27:56,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:56,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-15 11:27:56,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:56,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-15 11:27:56,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-15 11:27:56,780 INFO L87 Difference]: Start difference. First operand 1303 states and 1735 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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 11:27:58,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:27:58,155 INFO L93 Difference]: Finished difference Result 3897 states and 5325 transitions. [2021-12-15 11:27:58,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-15 11:27:58,155 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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 11:27:58,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:27:58,167 INFO L225 Difference]: With dead ends: 3897 [2021-12-15 11:27:58,168 INFO L226 Difference]: Without dead ends: 3836 [2021-12-15 11:27:58,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2021-12-15 11:27:58,171 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 2387 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 3417 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 11:27:58,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2387 Valid, 3417 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-15 11:27:58,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3836 states. [2021-12-15 11:27:58,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3836 to 1291. [2021-12-15 11:27:58,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1289 states have (on average 1.3351435221101629) internal successors, (1721), 1290 states have internal predecessors, (1721), 0 states have call successors, (0), 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 11:27:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1721 transitions. [2021-12-15 11:27:58,365 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1721 transitions. Word has length 56 [2021-12-15 11:27:58,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:27:58,365 INFO L470 AbstractCegarLoop]: Abstraction has 1291 states and 1721 transitions. [2021-12-15 11:27:58,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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 11:27:58,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1721 transitions. [2021-12-15 11:27:58,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-15 11:27:58,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:27:58,367 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 11:27:58,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-15 11:27:58,367 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 11:27:58,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:27:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1558288919, now seen corresponding path program 1 times [2021-12-15 11:27:58,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:27:58,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778988466] [2021-12-15 11:27:58,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:27:58,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:27:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:27:58,809 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 11:27:58,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:27:58,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778988466] [2021-12-15 11:27:58,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778988466] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:27:58,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:27:58,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-15 11:27:58,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861237917] [2021-12-15 11:27:58,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:27:58,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-15 11:27:58,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:27:58,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-15 11:27:58,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-15 11:27:58,812 INFO L87 Difference]: Start difference. First operand 1291 states and 1721 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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 11:28:00,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:00,944 INFO L93 Difference]: Finished difference Result 2380 states and 3200 transitions. [2021-12-15 11:28:00,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-15 11:28:00,945 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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 11:28:00,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:00,949 INFO L225 Difference]: With dead ends: 2380 [2021-12-15 11:28:00,949 INFO L226 Difference]: Without dead ends: 2376 [2021-12-15 11:28:00,950 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 11:28:00,951 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 1726 mSDsluCounter, 4759 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 5155 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:00,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1726 Valid, 5155 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2279 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-15 11:28:00,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2021-12-15 11:28:01,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1298. [2021-12-15 11:28:01,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1296 states have (on average 1.3348765432098766) internal successors, (1730), 1297 states have internal predecessors, (1730), 0 states have call successors, (0), 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 11:28:01,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1730 transitions. [2021-12-15 11:28:01,121 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1730 transitions. Word has length 56 [2021-12-15 11:28:01,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:01,121 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 1730 transitions. [2021-12-15 11:28:01,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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 11:28:01,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1730 transitions. [2021-12-15 11:28:01,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-15 11:28:01,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:01,122 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 11:28:01,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-15 11:28:01,123 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 11:28:01,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:01,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2012833268, now seen corresponding path program 1 times [2021-12-15 11:28:01,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:01,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822600042] [2021-12-15 11:28:01,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:01,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:01,574 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 11:28:01,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:01,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822600042] [2021-12-15 11:28:01,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822600042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:01,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:01,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-15 11:28:01,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901941599] [2021-12-15 11:28:01,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:01,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-15 11:28:01,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:01,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-15 11:28:01,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-12-15 11:28:01,576 INFO L87 Difference]: Start difference. First operand 1298 states and 1730 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 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 11:28:03,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:03,531 INFO L93 Difference]: Finished difference Result 2642 states and 3568 transitions. [2021-12-15 11:28:03,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-15 11:28:03,531 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 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 11:28:03,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:03,535 INFO L225 Difference]: With dead ends: 2642 [2021-12-15 11:28:03,535 INFO L226 Difference]: Without dead ends: 2638 [2021-12-15 11:28:03,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2021-12-15 11:28:03,541 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 2059 mSDsluCounter, 4563 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 5016 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:03,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2059 Valid, 5016 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-15 11:28:03,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2021-12-15 11:28:03,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 1287. [2021-12-15 11:28:03,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1286 states have (on average 1.3351477449455678) internal successors, (1717), 1286 states have internal predecessors, (1717), 0 states have call successors, (0), 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 11:28:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1717 transitions. [2021-12-15 11:28:03,717 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1717 transitions. Word has length 57 [2021-12-15 11:28:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:03,717 INFO L470 AbstractCegarLoop]: Abstraction has 1287 states and 1717 transitions. [2021-12-15 11:28:03,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 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 11:28:03,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1717 transitions. [2021-12-15 11:28:03,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-15 11:28:03,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:03,718 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] [2021-12-15 11:28:03,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-15 11:28:03,719 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-15 11:28:03,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:03,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1173720509, now seen corresponding path program 1 times [2021-12-15 11:28:03,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:03,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331842614] [2021-12-15 11:28:03,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:03,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:03,773 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 11:28:03,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:03,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331842614] [2021-12-15 11:28:03,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331842614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:03,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:03,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 11:28:03,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794479658] [2021-12-15 11:28:03,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:03,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:28:03,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:03,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:28:03,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:28:03,775 INFO L87 Difference]: Start difference. First operand 1287 states and 1717 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:04,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:04,190 INFO L93 Difference]: Finished difference Result 2993 states and 4127 transitions. [2021-12-15 11:28:04,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:28:04,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-15 11:28:04,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:04,195 INFO L225 Difference]: With dead ends: 2993 [2021-12-15 11:28:04,195 INFO L226 Difference]: Without dead ends: 2283 [2021-12-15 11:28:04,196 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 11:28:04,197 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 881 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 694 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 11:28:04,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 694 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:28:04,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2021-12-15 11:28:04,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 1937. [2021-12-15 11:28:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1936 states have (on average 1.3424586776859504) internal successors, (2599), 1936 states have internal predecessors, (2599), 0 states have call successors, (0), 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 11:28:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2599 transitions. [2021-12-15 11:28:04,469 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2599 transitions. Word has length 63 [2021-12-15 11:28:04,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:04,469 INFO L470 AbstractCegarLoop]: Abstraction has 1937 states and 2599 transitions. [2021-12-15 11:28:04,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:04,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2599 transitions. [2021-12-15 11:28:04,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 11:28:04,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:04,472 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] [2021-12-15 11:28:04,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-15 11:28:04,473 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 11:28:04,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:04,473 INFO L85 PathProgramCache]: Analyzing trace with hash 5757662, now seen corresponding path program 1 times [2021-12-15 11:28:04,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:04,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487146123] [2021-12-15 11:28:04,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:04,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:04,520 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 11:28:04,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:04,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487146123] [2021-12-15 11:28:04,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487146123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:04,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:04,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 11:28:04,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361711919] [2021-12-15 11:28:04,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:04,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:28:04,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:04,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:28:04,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:28:04,523 INFO L87 Difference]: Start difference. First operand 1937 states and 2599 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:04,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:04,772 INFO L93 Difference]: Finished difference Result 1943 states and 2602 transitions. [2021-12-15 11:28:04,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:28:04,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-15 11:28:04,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:04,779 INFO L225 Difference]: With dead ends: 1943 [2021-12-15 11:28:04,779 INFO L226 Difference]: Without dead ends: 1732 [2021-12-15 11:28:04,780 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 11:28:04,780 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 447 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:04,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 659 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:28:04,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2021-12-15 11:28:05,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1728. [2021-12-15 11:28:05,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1727 states have (on average 1.3462651997683845) internal successors, (2325), 1727 states have internal predecessors, (2325), 0 states have call successors, (0), 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 11:28:05,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2325 transitions. [2021-12-15 11:28:05,049 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2325 transitions. Word has length 64 [2021-12-15 11:28:05,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:05,049 INFO L470 AbstractCegarLoop]: Abstraction has 1728 states and 2325 transitions. [2021-12-15 11:28:05,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:05,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2325 transitions. [2021-12-15 11:28:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-15 11:28:05,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:05,051 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] [2021-12-15 11:28:05,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-15 11:28:05,052 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 11:28:05,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:05,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1852933729, now seen corresponding path program 1 times [2021-12-15 11:28:05,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:05,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392069690] [2021-12-15 11:28:05,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:05,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:05,087 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 11:28:05,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:05,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392069690] [2021-12-15 11:28:05,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392069690] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:05,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:05,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:28:05,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703240191] [2021-12-15 11:28:05,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:05,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:28:05,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:05,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:28:05,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:28:05,089 INFO L87 Difference]: Start difference. First operand 1728 states and 2325 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:05,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:05,561 INFO L93 Difference]: Finished difference Result 3920 states and 5371 transitions. [2021-12-15 11:28:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:28:05,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-15 11:28:05,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:05,566 INFO L225 Difference]: With dead ends: 3920 [2021-12-15 11:28:05,566 INFO L226 Difference]: Without dead ends: 2774 [2021-12-15 11:28:05,568 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 11:28:05,568 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 121 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 495 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 11:28:05,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 495 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:28:05,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2021-12-15 11:28:05,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2620. [2021-12-15 11:28:05,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2620 states, 2619 states have (on average 1.3573883161512028) internal successors, (3555), 2619 states have internal predecessors, (3555), 0 states have call successors, (0), 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 11:28:05,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 3555 transitions. [2021-12-15 11:28:05,934 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 3555 transitions. Word has length 65 [2021-12-15 11:28:05,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:05,934 INFO L470 AbstractCegarLoop]: Abstraction has 2620 states and 3555 transitions. [2021-12-15 11:28:05,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:05,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 3555 transitions. [2021-12-15 11:28:05,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-15 11:28:05,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:05,936 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 11:28:05,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-15 11:28:05,937 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 11:28:05,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:05,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1984326042, now seen corresponding path program 1 times [2021-12-15 11:28:05,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:05,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568880514] [2021-12-15 11:28:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:05,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:05,969 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 11:28:05,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:05,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568880514] [2021-12-15 11:28:05,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568880514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:05,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:05,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:28:05,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88275210] [2021-12-15 11:28:05,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:05,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:28:05,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:05,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:28:05,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:28:05,971 INFO L87 Difference]: Start difference. First operand 2620 states and 3555 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 11:28:06,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:06,552 INFO L93 Difference]: Finished difference Result 6496 states and 8909 transitions. [2021-12-15 11:28:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:28:06,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 11:28:06,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:06,557 INFO L225 Difference]: With dead ends: 6496 [2021-12-15 11:28:06,557 INFO L226 Difference]: Without dead ends: 4458 [2021-12-15 11:28:06,559 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 11:28:06,559 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 99 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 491 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 11:28:06,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 491 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:28:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4458 states. [2021-12-15 11:28:07,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4458 to 4152. [2021-12-15 11:28:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4152 states, 4151 states have (on average 1.360395085521561) internal successors, (5647), 4151 states have internal predecessors, (5647), 0 states have call successors, (0), 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 11:28:07,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 5647 transitions. [2021-12-15 11:28:07,088 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 5647 transitions. Word has length 67 [2021-12-15 11:28:07,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:07,088 INFO L470 AbstractCegarLoop]: Abstraction has 4152 states and 5647 transitions. [2021-12-15 11:28:07,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 11:28:07,089 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 5647 transitions. [2021-12-15 11:28:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-15 11:28:07,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:07,090 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] [2021-12-15 11:28:07,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-15 11:28:07,090 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 11:28:07,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:07,090 INFO L85 PathProgramCache]: Analyzing trace with hash -456053566, now seen corresponding path program 1 times [2021-12-15 11:28:07,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:07,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075467738] [2021-12-15 11:28:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:07,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:07,142 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 11:28:07,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:07,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075467738] [2021-12-15 11:28:07,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075467738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:07,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:07,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 11:28:07,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597612241] [2021-12-15 11:28:07,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:07,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 11:28:07,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:07,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 11:28:07,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 11:28:07,145 INFO L87 Difference]: Start difference. First operand 4152 states and 5647 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:08,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:08,576 INFO L93 Difference]: Finished difference Result 8712 states and 11675 transitions. [2021-12-15 11:28:08,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 11:28:08,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-15 11:28:08,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:08,586 INFO L225 Difference]: With dead ends: 8712 [2021-12-15 11:28:08,586 INFO L226 Difference]: Without dead ends: 8710 [2021-12-15 11:28:08,587 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 11:28:08,588 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 343 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1233 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 11:28:08,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 1233 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:28:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8710 states. [2021-12-15 11:28:09,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8710 to 4488. [2021-12-15 11:28:09,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4487 states have (on average 1.3334076220191664) internal successors, (5983), 4487 states have internal predecessors, (5983), 0 states have call successors, (0), 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 11:28:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 5983 transitions. [2021-12-15 11:28:09,292 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 5983 transitions. Word has length 69 [2021-12-15 11:28:09,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:09,293 INFO L470 AbstractCegarLoop]: Abstraction has 4488 states and 5983 transitions. [2021-12-15 11:28:09,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:09,293 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 5983 transitions. [2021-12-15 11:28:09,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-15 11:28:09,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:09,295 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 11:28:09,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-15 11:28:09,295 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 11:28:09,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:09,296 INFO L85 PathProgramCache]: Analyzing trace with hash 789084021, now seen corresponding path program 1 times [2021-12-15 11:28:09,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:09,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244865259] [2021-12-15 11:28:09,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:09,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:09,331 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 11:28:09,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:09,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244865259] [2021-12-15 11:28:09,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244865259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:09,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:09,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:28:09,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283151018] [2021-12-15 11:28:09,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:09,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:28:09,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:09,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:28:09,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:28:09,333 INFO L87 Difference]: Start difference. First operand 4488 states and 5983 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 11:28:10,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:10,560 INFO L93 Difference]: Finished difference Result 11482 states and 15355 transitions. [2021-12-15 11:28:10,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:28:10,560 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 11:28:10,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:10,568 INFO L225 Difference]: With dead ends: 11482 [2021-12-15 11:28:10,568 INFO L226 Difference]: Without dead ends: 7466 [2021-12-15 11:28:10,571 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 11:28:10,572 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 151 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:10,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 388 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:28:10,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7466 states. [2021-12-15 11:28:11,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7466 to 7352. [2021-12-15 11:28:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 7351 states have (on average 1.3041763025438715) internal successors, (9587), 7351 states have internal predecessors, (9587), 0 states have call successors, (0), 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 11:28:11,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 9587 transitions. [2021-12-15 11:28:11,624 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 9587 transitions. Word has length 70 [2021-12-15 11:28:11,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:11,625 INFO L470 AbstractCegarLoop]: Abstraction has 7352 states and 9587 transitions. [2021-12-15 11:28:11,625 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 11:28:11,625 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 9587 transitions. [2021-12-15 11:28:11,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-15 11:28:11,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:11,628 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] [2021-12-15 11:28:11,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-15 11:28:11,628 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 11:28:11,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:11,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2099371189, now seen corresponding path program 1 times [2021-12-15 11:28:11,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:11,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772712056] [2021-12-15 11:28:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:11,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:11,660 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 11:28:11,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:11,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772712056] [2021-12-15 11:28:11,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772712056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:11,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:11,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:28:11,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421139824] [2021-12-15 11:28:11,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:11,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:28:11,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:11,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:28:11,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:28:11,662 INFO L87 Difference]: Start difference. First operand 7352 states and 9587 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:13,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:13,510 INFO L93 Difference]: Finished difference Result 18116 states and 23629 transitions. [2021-12-15 11:28:13,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:28:13,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-15 11:28:13,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:13,522 INFO L225 Difference]: With dead ends: 18116 [2021-12-15 11:28:13,522 INFO L226 Difference]: Without dead ends: 11216 [2021-12-15 11:28:13,528 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 11:28:13,529 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 123 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 480 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 11:28:13,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 480 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:28:13,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11216 states. [2021-12-15 11:28:15,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11216 to 10190. [2021-12-15 11:28:15,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10190 states, 10189 states have (on average 1.2916871135538326) internal successors, (13161), 10189 states have internal predecessors, (13161), 0 states have call successors, (0), 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 11:28:15,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10190 states to 10190 states and 13161 transitions. [2021-12-15 11:28:15,216 INFO L78 Accepts]: Start accepts. Automaton has 10190 states and 13161 transitions. Word has length 71 [2021-12-15 11:28:15,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:15,216 INFO L470 AbstractCegarLoop]: Abstraction has 10190 states and 13161 transitions. [2021-12-15 11:28:15,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:15,216 INFO L276 IsEmpty]: Start isEmpty. Operand 10190 states and 13161 transitions. [2021-12-15 11:28:15,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-15 11:28:15,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:15,218 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] [2021-12-15 11:28:15,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-15 11:28:15,218 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 11:28:15,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:15,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1535774186, now seen corresponding path program 1 times [2021-12-15 11:28:15,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:15,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852092423] [2021-12-15 11:28:15,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:15,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:15,264 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 11:28:15,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:15,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852092423] [2021-12-15 11:28:15,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852092423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:15,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:15,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 11:28:15,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912102860] [2021-12-15 11:28:15,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:15,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:28:15,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:15,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:28:15,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:28:15,267 INFO L87 Difference]: Start difference. First operand 10190 states and 13161 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:17,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:17,310 INFO L93 Difference]: Finished difference Result 15066 states and 19591 transitions. [2021-12-15 11:28:17,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:28:17,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-15 11:28:17,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:17,325 INFO L225 Difference]: With dead ends: 15066 [2021-12-15 11:28:17,325 INFO L226 Difference]: Without dead ends: 12844 [2021-12-15 11:28:17,329 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 11:28:17,329 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 524 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:17,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 793 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:28:17,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12844 states. [2021-12-15 11:28:19,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12844 to 11668. [2021-12-15 11:28:19,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11668 states, 11667 states have (on average 1.2890203137053227) internal successors, (15039), 11667 states have internal predecessors, (15039), 0 states have call successors, (0), 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 11:28:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11668 states to 11668 states and 15039 transitions. [2021-12-15 11:28:19,408 INFO L78 Accepts]: Start accepts. Automaton has 11668 states and 15039 transitions. Word has length 71 [2021-12-15 11:28:19,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:19,409 INFO L470 AbstractCegarLoop]: Abstraction has 11668 states and 15039 transitions. [2021-12-15 11:28:19,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:19,409 INFO L276 IsEmpty]: Start isEmpty. Operand 11668 states and 15039 transitions. [2021-12-15 11:28:19,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-15 11:28:19,410 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:19,410 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] [2021-12-15 11:28:19,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-15 11:28:19,411 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 11:28:19,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:19,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1231319734, now seen corresponding path program 1 times [2021-12-15 11:28:19,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:19,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373975767] [2021-12-15 11:28:19,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:19,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:19,457 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 11:28:19,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:19,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373975767] [2021-12-15 11:28:19,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373975767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:19,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:19,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 11:28:19,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472665146] [2021-12-15 11:28:19,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:19,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:28:19,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:19,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:28:19,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:28:19,460 INFO L87 Difference]: Start difference. First operand 11668 states and 15039 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:21,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:21,696 INFO L93 Difference]: Finished difference Result 17292 states and 22459 transitions. [2021-12-15 11:28:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:28:21,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-12-15 11:28:21,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:21,712 INFO L225 Difference]: With dead ends: 17292 [2021-12-15 11:28:21,712 INFO L226 Difference]: Without dead ends: 13906 [2021-12-15 11:28:21,717 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 11:28:21,718 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 592 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:21,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 701 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:28:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13906 states. [2021-12-15 11:28:23,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13906 to 13496. [2021-12-15 11:28:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13496 states, 13495 states have (on average 1.2854390515005558) internal successors, (17347), 13495 states have internal predecessors, (17347), 0 states have call successors, (0), 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 11:28:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13496 states to 13496 states and 17347 transitions. [2021-12-15 11:28:23,878 INFO L78 Accepts]: Start accepts. Automaton has 13496 states and 17347 transitions. Word has length 76 [2021-12-15 11:28:23,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:23,878 INFO L470 AbstractCegarLoop]: Abstraction has 13496 states and 17347 transitions. [2021-12-15 11:28:23,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:28:23,878 INFO L276 IsEmpty]: Start isEmpty. Operand 13496 states and 17347 transitions. [2021-12-15 11:28:23,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-15 11:28:23,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:23,882 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:28:23,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-15 11:28:23,882 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 11:28:23,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1072943688, now seen corresponding path program 1 times [2021-12-15 11:28:23,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:23,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836337183] [2021-12-15 11:28:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:23,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:28:23,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:23,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836337183] [2021-12-15 11:28:23,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836337183] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 11:28:23,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817424656] [2021-12-15 11:28:23,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:23,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 11:28:23,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:28:23,933 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 11:28:23,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 11:28:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:24,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-15 11:28:24,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 11:28:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:28:24,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 11:28:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:28:24,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817424656] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 11:28:24,737 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 11:28:24,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2021-12-15 11:28:24,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76902455] [2021-12-15 11:28:24,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 11:28:24,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-15 11:28:24,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:24,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-15 11:28:24,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-15 11:28:24,739 INFO L87 Difference]: Start difference. First operand 13496 states and 17347 transitions. Second operand has 14 states, 14 states have (on average 16.714285714285715) internal successors, (234), 14 states have internal predecessors, (234), 0 states have call successors, (0), 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 11:28:28,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:28,689 INFO L93 Difference]: Finished difference Result 31275 states and 40113 transitions. [2021-12-15 11:28:28,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 11:28:28,689 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.714285714285715) internal successors, (234), 14 states have internal predecessors, (234), 0 states have call successors, (0), 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 88 [2021-12-15 11:28:28,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:28,713 INFO L225 Difference]: With dead ends: 31275 [2021-12-15 11:28:28,713 INFO L226 Difference]: Without dead ends: 18205 [2021-12-15 11:28:28,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:28:28,728 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 3566 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3566 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:28,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3566 Valid, 750 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 11:28:28,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18205 states. [2021-12-15 11:28:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18205 to 12972. [2021-12-15 11:28:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.2550304525479916) internal successors, (16279), 12971 states have internal predecessors, (16279), 0 states have call successors, (0), 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 11:28:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16279 transitions. [2021-12-15 11:28:30,941 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16279 transitions. Word has length 88 [2021-12-15 11:28:30,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:30,942 INFO L470 AbstractCegarLoop]: Abstraction has 12972 states and 16279 transitions. [2021-12-15 11:28:30,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.714285714285715) internal successors, (234), 14 states have internal predecessors, (234), 0 states have call successors, (0), 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 11:28:30,942 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16279 transitions. [2021-12-15 11:28:30,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-15 11:28:30,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:30,946 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] [2021-12-15 11:28:30,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 11:28:31,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 11:28:31,169 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 11:28:31,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash -824018739, now seen corresponding path program 1 times [2021-12-15 11:28:31,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:31,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978353587] [2021-12-15 11:28:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:31,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:28:31,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:31,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978353587] [2021-12-15 11:28:31,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978353587] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 11:28:31,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633514465] [2021-12-15 11:28:31,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:31,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 11:28:31,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:28:31,392 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 11:28:31,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 11:28:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:31,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-15 11:28:31,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 11:28:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:28:32,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 11:28:33,183 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:28:33,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633514465] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 11:28:33,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 11:28:33,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2021-12-15 11:28:33,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109058322] [2021-12-15 11:28:33,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 11:28:33,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-15 11:28:33,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:33,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-15 11:28:33,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2021-12-15 11:28:33,186 INFO L87 Difference]: Start difference. First operand 12972 states and 16279 transitions. Second operand has 26 states, 26 states have (on average 8.653846153846153) internal successors, (225), 25 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)