./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.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 0ed6e4196d49d75b29a7ddd297e9986c08c6bd65f18221f72f78571f381f483e --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:58:51,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:58:51,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:58:51,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:58:51,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:58:51,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:58:51,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:58:51,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:58:51,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:58:51,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:58:51,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:58:51,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:58:51,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:58:51,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:58:51,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:58:51,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:58:51,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:58:51,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:58:51,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:58:51,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:58:51,506 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:58:51,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:58:51,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:58:51,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:58:51,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:58:51,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:58:51,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:58:51,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:58:51,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:58:51,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:58:51,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:58:51,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:58:51,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:58:51,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:58:51,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:58:51,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:58:51,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:58:51,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:58:51,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:58:51,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:58:51,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:58:51,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:58:51,530 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:58:51,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:58:51,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:58:51,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:58:51,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:58:51,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:58:51,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:58:51,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:58:51,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:58:51,567 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:58:51,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:58:51,568 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:58:51,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:58:51,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:58:51,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:58:51,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:58:51,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:58:51,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:58:51,569 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:58:51,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:58:51,569 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:58:51,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:58:51,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:58:51,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:58:51,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:58:51,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:58:51,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:58:51,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:58:51,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:58:51,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:58:51,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:58:51,572 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:58:51,572 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:58:51,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:58:51,572 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ed6e4196d49d75b29a7ddd297e9986c08c6bd65f18221f72f78571f381f483e [2022-07-12 06:58:51,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:58:51,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:58:51,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:58:51,818 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:58:51,819 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:58:51,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-07-12 06:58:51,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09164c79a/acae4a5598194acb8d4642f5b73f6ab1/FLAG7e1b18254 [2022-07-12 06:58:52,454 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:58:52,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-07-12 06:58:52,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09164c79a/acae4a5598194acb8d4642f5b73f6ab1/FLAG7e1b18254 [2022-07-12 06:58:52,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09164c79a/acae4a5598194acb8d4642f5b73f6ab1 [2022-07-12 06:58:52,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:58:52,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:58:52,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:58:52,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:58:52,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:58:52,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:58:52" (1/1) ... [2022-07-12 06:58:52,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d3f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:52, skipping insertion in model container [2022-07-12 06:58:52,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:58:52" (1/1) ... [2022-07-12 06:58:52,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:58:52,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:58:53,117 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8637,8650] [2022-07-12 06:58:53,173 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15862,15875] [2022-07-12 06:58:53,192 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18059,18072] [2022-07-12 06:58:53,201 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[19083,19096] [2022-07-12 06:58:53,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:58:53,393 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:58:53,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8637,8650] [2022-07-12 06:58:53,456 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15862,15875] [2022-07-12 06:58:53,463 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18059,18072] [2022-07-12 06:58:53,471 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[19083,19096] [2022-07-12 06:58:53,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:58:53,595 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:58:53,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:53 WrapperNode [2022-07-12 06:58:53,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:58:53,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:58:53,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:58:53,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:58:53,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:53" (1/1) ... [2022-07-12 06:58:53,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:53" (1/1) ... [2022-07-12 06:58:53,692 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2592 [2022-07-12 06:58:53,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:58:53,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:58:53,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:58:53,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:58:53,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:53" (1/1) ... [2022-07-12 06:58:53,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:53" (1/1) ... [2022-07-12 06:58:53,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:53" (1/1) ... [2022-07-12 06:58:53,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:53" (1/1) ... [2022-07-12 06:58:53,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:53" (1/1) ... [2022-07-12 06:58:53,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:53" (1/1) ... [2022-07-12 06:58:53,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:53" (1/1) ... [2022-07-12 06:58:53,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:58:53,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:58:53,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:58:53,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:58:53,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:53" (1/1) ... [2022-07-12 06:58:53,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:58:53,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:58:53,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 06:58:53,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 06:58:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:58:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:58:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:58:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:58:54,104 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:58:54,106 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:58:55,244 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:58:55,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:58:55,261 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 06:58:55,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:58:55 BoogieIcfgContainer [2022-07-12 06:58:55,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:58:55,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:58:55,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:58:55,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:58:55,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:58:52" (1/3) ... [2022-07-12 06:58:55,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764d6f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:58:55, skipping insertion in model container [2022-07-12 06:58:55,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:53" (2/3) ... [2022-07-12 06:58:55,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764d6f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:58:55, skipping insertion in model container [2022-07-12 06:58:55,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:58:55" (3/3) ... [2022-07-12 06:58:55,272 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-07-12 06:58:55,284 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:58:55,285 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-12 06:58:55,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:58:55,374 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@694039ab, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@8a0c299 [2022-07-12 06:58:55,374 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 06:58:55,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 457 states, 452 states have (on average 1.8495575221238938) internal successors, (836), 456 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-12 06:58:55,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:58:55,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:58:55,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:58:55,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:58:55,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1707798208, now seen corresponding path program 1 times [2022-07-12 06:58:55,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:58:55,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962751657] [2022-07-12 06:58:55,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:58:55,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:58:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:58:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:58:55,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:58:55,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962751657] [2022-07-12 06:58:55,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962751657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:58:55,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:58:55,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:58:55,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829762261] [2022-07-12 06:58:55,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:58:55,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:58:55,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:58:55,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:58:55,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:58:55,760 INFO L87 Difference]: Start difference. First operand has 457 states, 452 states have (on average 1.8495575221238938) internal successors, (836), 456 states have internal predecessors, (836), 0 states have call successors, (0), 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 17.0) internal successors, (51), 3 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) [2022-07-12 06:58:55,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:58:55,910 INFO L93 Difference]: Finished difference Result 725 states and 1271 transitions. [2022-07-12 06:58:55,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:58:55,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 [2022-07-12 06:58:55,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:58:55,928 INFO L225 Difference]: With dead ends: 725 [2022-07-12 06:58:55,928 INFO L226 Difference]: Without dead ends: 571 [2022-07-12 06:58:55,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:58:55,942 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 438 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:58:55,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 1416 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:58:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-07-12 06:58:56,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 565. [2022-07-12 06:58:56,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 561 states have (on average 1.3440285204991087) internal successors, (754), 564 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:56,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 754 transitions. [2022-07-12 06:58:56,043 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 754 transitions. Word has length 51 [2022-07-12 06:58:56,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:58:56,045 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 754 transitions. [2022-07-12 06:58:56,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2022-07-12 06:58:56,045 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 754 transitions. [2022-07-12 06:58:56,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-12 06:58:56,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:58:56,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:58:56,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:58:56,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:58:56,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:58:56,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1349444518, now seen corresponding path program 1 times [2022-07-12 06:58:56,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:58:56,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209072938] [2022-07-12 06:58:56,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:58:56,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:58:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:58:56,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:58:56,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:58:56,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209072938] [2022-07-12 06:58:56,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209072938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:58:56,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:58:56,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:58:56,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676759259] [2022-07-12 06:58:56,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:58:56,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:58:56,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:58:56,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:58:56,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:58:56,176 INFO L87 Difference]: Start difference. First operand 565 states and 754 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2022-07-12 06:58:56,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:58:56,277 INFO L93 Difference]: Finished difference Result 994 states and 1379 transitions. [2022-07-12 06:58:56,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:58:56,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 [2022-07-12 06:58:56,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:58:56,283 INFO L225 Difference]: With dead ends: 994 [2022-07-12 06:58:56,283 INFO L226 Difference]: Without dead ends: 781 [2022-07-12 06:58:56,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:58:56,288 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 314 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1017 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 [2022-07-12 06:58:56,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1017 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:58:56,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-07-12 06:58:56,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 774. [2022-07-12 06:58:56,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 770 states have (on average 1.3714285714285714) internal successors, (1056), 773 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1056 transitions. [2022-07-12 06:58:56,368 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1056 transitions. Word has length 51 [2022-07-12 06:58:56,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:58:56,371 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 1056 transitions. [2022-07-12 06:58:56,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2022-07-12 06:58:56,372 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1056 transitions. [2022-07-12 06:58:56,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-12 06:58:56,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:58:56,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:58:56,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:58:56,376 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:58:56,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:58:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1493728400, now seen corresponding path program 1 times [2022-07-12 06:58:56,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:58:56,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340080351] [2022-07-12 06:58:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:58:56,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:58:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:58:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:58:56,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:58:56,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340080351] [2022-07-12 06:58:56,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340080351] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:58:56,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:58:56,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:58:56,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342597625] [2022-07-12 06:58:56,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:58:56,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:58:56,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:58:56,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:58:56,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:58:56,516 INFO L87 Difference]: Start difference. First operand 774 states and 1056 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) [2022-07-12 06:58:56,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:58:56,936 INFO L93 Difference]: Finished difference Result 1720 states and 2419 transitions. [2022-07-12 06:58:56,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:58:56,936 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 [2022-07-12 06:58:56,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:58:56,941 INFO L225 Difference]: With dead ends: 1720 [2022-07-12 06:58:56,942 INFO L226 Difference]: Without dead ends: 1063 [2022-07-12 06:58:56,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:58:56,949 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1730 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:58:56,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 392 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 06:58:56,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-07-12 06:58:57,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1057. [2022-07-12 06:58:57,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1053 states have (on average 1.4074074074074074) internal successors, (1482), 1056 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:57,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1482 transitions. [2022-07-12 06:58:57,043 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1482 transitions. Word has length 51 [2022-07-12 06:58:57,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:58:57,044 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1482 transitions. [2022-07-12 06:58:57,044 INFO L496 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) [2022-07-12 06:58:57,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1482 transitions. [2022-07-12 06:58:57,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-12 06:58:57,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:58:57,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:58:57,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:58:57,048 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:58:57,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:58:57,048 INFO L85 PathProgramCache]: Analyzing trace with hash -358090099, now seen corresponding path program 1 times [2022-07-12 06:58:57,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:58:57,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643672592] [2022-07-12 06:58:57,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:58:57,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:58:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:58:57,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:58:57,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:58:57,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643672592] [2022-07-12 06:58:57,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643672592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:58:57,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:58:57,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:58:57,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692209822] [2022-07-12 06:58:57,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:58:57,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:58:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:58:57,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:58:57,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:58:57,139 INFO L87 Difference]: Start difference. First operand 1057 states and 1482 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:57,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:58:57,263 INFO L93 Difference]: Finished difference Result 2561 states and 3637 transitions. [2022-07-12 06:58:57,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:58:57,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-07-12 06:58:57,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:58:57,272 INFO L225 Difference]: With dead ends: 2561 [2022-07-12 06:58:57,272 INFO L226 Difference]: Without dead ends: 1730 [2022-07-12 06:58:57,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:58:57,283 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 364 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:58:57,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 933 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:58:57,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2022-07-12 06:58:57,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1716. [2022-07-12 06:58:57,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1712 states have (on average 1.3919392523364487) internal successors, (2383), 1715 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:57,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2383 transitions. [2022-07-12 06:58:57,395 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2383 transitions. Word has length 52 [2022-07-12 06:58:57,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:58:57,396 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2383 transitions. [2022-07-12 06:58:57,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:57,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2383 transitions. [2022-07-12 06:58:57,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-12 06:58:57,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:58:57,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:58:57,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:58:57,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:58:57,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:58:57,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1296606516, now seen corresponding path program 1 times [2022-07-12 06:58:57,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:58:57,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895590459] [2022-07-12 06:58:57,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:58:57,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:58:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:58:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:58:57,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:58:57,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895590459] [2022-07-12 06:58:57,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895590459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:58:57,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:58:57,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:58:57,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453551457] [2022-07-12 06:58:57,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:58:57,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:58:57,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:58:57,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:58:57,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:58:57,498 INFO L87 Difference]: Start difference. First operand 1716 states and 2383 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:57,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:58:57,911 INFO L93 Difference]: Finished difference Result 3785 states and 5312 transitions. [2022-07-12 06:58:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:58:57,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-07-12 06:58:57,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:58:57,920 INFO L225 Difference]: With dead ends: 3785 [2022-07-12 06:58:57,920 INFO L226 Difference]: Without dead ends: 2241 [2022-07-12 06:58:57,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:58:57,926 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1531 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:58:57,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 367 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:58:57,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2022-07-12 06:58:58,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 2227. [2022-07-12 06:58:58,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 2223 states have (on average 1.3967611336032388) internal successors, (3105), 2226 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:58,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3105 transitions. [2022-07-12 06:58:58,093 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3105 transitions. Word has length 52 [2022-07-12 06:58:58,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:58:58,094 INFO L495 AbstractCegarLoop]: Abstraction has 2227 states and 3105 transitions. [2022-07-12 06:58:58,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:58,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3105 transitions. [2022-07-12 06:58:58,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-12 06:58:58,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:58:58,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:58:58,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:58:58,096 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:58:58,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:58:58,097 INFO L85 PathProgramCache]: Analyzing trace with hash -482685133, now seen corresponding path program 1 times [2022-07-12 06:58:58,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:58:58,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039785220] [2022-07-12 06:58:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:58:58,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:58:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:58:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:58:58,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:58:58,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039785220] [2022-07-12 06:58:58,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039785220] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:58:58,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:58:58,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:58:58,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937436851] [2022-07-12 06:58:58,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:58:58,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:58:58,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:58:58,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:58:58,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:58:58,158 INFO L87 Difference]: Start difference. First operand 2227 states and 3105 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:58,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:58:58,577 INFO L93 Difference]: Finished difference Result 5040 states and 7066 transitions. [2022-07-12 06:58:58,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:58:58,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-07-12 06:58:58,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:58:58,590 INFO L225 Difference]: With dead ends: 5040 [2022-07-12 06:58:58,591 INFO L226 Difference]: Without dead ends: 2985 [2022-07-12 06:58:58,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:58:58,595 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1376 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:58:58,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 335 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:58:58,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2022-07-12 06:58:58,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 2966. [2022-07-12 06:58:58,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2962 states have (on average 1.3902768399729912) internal successors, (4118), 2965 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 4118 transitions. [2022-07-12 06:58:58,827 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 4118 transitions. Word has length 53 [2022-07-12 06:58:58,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:58:58,828 INFO L495 AbstractCegarLoop]: Abstraction has 2966 states and 4118 transitions. [2022-07-12 06:58:58,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:58,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 4118 transitions. [2022-07-12 06:58:58,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-12 06:58:58,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:58:58,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:58:58,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:58:58,832 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:58:58,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:58:58,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1630046103, now seen corresponding path program 1 times [2022-07-12 06:58:58,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:58:58,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453682444] [2022-07-12 06:58:58,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:58:58,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:58:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:58:58,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:58:58,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:58:58,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453682444] [2022-07-12 06:58:58,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453682444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:58:58,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:58:58,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:58:58,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394399469] [2022-07-12 06:58:58,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:58:58,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:58:58,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:58:58,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:58:58,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:58:58,902 INFO L87 Difference]: Start difference. First operand 2966 states and 4118 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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) [2022-07-12 06:58:59,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:58:59,988 INFO L93 Difference]: Finished difference Result 9648 states and 13611 transitions. [2022-07-12 06:58:59,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:58:59,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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 [2022-07-12 06:58:59,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:00,020 INFO L225 Difference]: With dead ends: 9648 [2022-07-12 06:59:00,020 INFO L226 Difference]: Without dead ends: 8327 [2022-07-12 06:59:00,025 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:59:00,026 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 2727 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2727 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:00,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2727 Valid, 599 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 06:59:00,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8327 states. [2022-07-12 06:59:00,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8327 to 2980. [2022-07-12 06:59:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2976 states have (on average 1.3897849462365592) internal successors, (4136), 2979 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:00,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 4136 transitions. [2022-07-12 06:59:00,418 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 4136 transitions. Word has length 54 [2022-07-12 06:59:00,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:00,418 INFO L495 AbstractCegarLoop]: Abstraction has 2980 states and 4136 transitions. [2022-07-12 06:59:00,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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) [2022-07-12 06:59:00,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 4136 transitions. [2022-07-12 06:59:00,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-12 06:59:00,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:00,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:00,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:59:00,422 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:00,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:00,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1470909546, now seen corresponding path program 1 times [2022-07-12 06:59:00,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:00,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854399712] [2022-07-12 06:59:00,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:00,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:00,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:00,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854399712] [2022-07-12 06:59:00,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854399712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:00,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:00,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:59:00,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012122694] [2022-07-12 06:59:00,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:00,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:59:00,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:00,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:59:00,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:59:00,500 INFO L87 Difference]: Start difference. First operand 2980 states and 4136 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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) [2022-07-12 06:59:02,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:02,130 INFO L93 Difference]: Finished difference Result 10678 states and 15139 transitions. [2022-07-12 06:59:02,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:59:02,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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 [2022-07-12 06:59:02,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:02,163 INFO L225 Difference]: With dead ends: 10678 [2022-07-12 06:59:02,163 INFO L226 Difference]: Without dead ends: 9560 [2022-07-12 06:59:02,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 06:59:02,169 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 2037 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:02,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2037 Valid, 757 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 06:59:02,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9560 states. [2022-07-12 06:59:02,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9560 to 3002. [2022-07-12 06:59:02,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 2998 states have (on average 1.3899266177451635) internal successors, (4167), 3001 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:02,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 4167 transitions. [2022-07-12 06:59:02,635 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 4167 transitions. Word has length 54 [2022-07-12 06:59:02,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:02,636 INFO L495 AbstractCegarLoop]: Abstraction has 3002 states and 4167 transitions. [2022-07-12 06:59:02,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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) [2022-07-12 06:59:02,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 4167 transitions. [2022-07-12 06:59:02,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-12 06:59:02,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:02,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:02,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:59:02,640 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:02,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:02,641 INFO L85 PathProgramCache]: Analyzing trace with hash 269556297, now seen corresponding path program 1 times [2022-07-12 06:59:02,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:02,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407329390] [2022-07-12 06:59:02,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:02,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:02,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:02,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:02,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407329390] [2022-07-12 06:59:02,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407329390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:02,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:02,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:59:02,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39507049] [2022-07-12 06:59:02,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:02,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:59:02,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:02,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:59:02,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:59:02,738 INFO L87 Difference]: Start difference. First operand 3002 states and 4167 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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) [2022-07-12 06:59:04,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:04,385 INFO L93 Difference]: Finished difference Result 12683 states and 17895 transitions. [2022-07-12 06:59:04,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:59:04,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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 [2022-07-12 06:59:04,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:04,411 INFO L225 Difference]: With dead ends: 12683 [2022-07-12 06:59:04,412 INFO L226 Difference]: Without dead ends: 11715 [2022-07-12 06:59:04,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 06:59:04,418 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 3203 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3203 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:04,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3203 Valid, 655 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 06:59:04,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11715 states. [2022-07-12 06:59:04,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11715 to 3036. [2022-07-12 06:59:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3036 states, 3032 states have (on average 1.3888522427440633) internal successors, (4211), 3035 states have internal predecessors, (4211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3036 states to 3036 states and 4211 transitions. [2022-07-12 06:59:04,912 INFO L78 Accepts]: Start accepts. Automaton has 3036 states and 4211 transitions. Word has length 54 [2022-07-12 06:59:04,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:04,915 INFO L495 AbstractCegarLoop]: Abstraction has 3036 states and 4211 transitions. [2022-07-12 06:59:04,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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) [2022-07-12 06:59:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3036 states and 4211 transitions. [2022-07-12 06:59:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-12 06:59:04,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:04,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:04,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:59:04,918 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:04,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:04,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1866987345, now seen corresponding path program 1 times [2022-07-12 06:59:04,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:04,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397968992] [2022-07-12 06:59:04,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:04,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:05,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:05,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397968992] [2022-07-12 06:59:05,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397968992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:05,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:05,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:59:05,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666534958] [2022-07-12 06:59:05,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:05,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 06:59:05,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:05,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 06:59:05,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:59:05,064 INFO L87 Difference]: Start difference. First operand 3036 states and 4211 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:06,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:06,307 INFO L93 Difference]: Finished difference Result 7506 states and 10605 transitions. [2022-07-12 06:59:06,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:59:06,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-07-12 06:59:06,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:06,322 INFO L225 Difference]: With dead ends: 7506 [2022-07-12 06:59:06,322 INFO L226 Difference]: Without dead ends: 5545 [2022-07-12 06:59:06,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-07-12 06:59:06,328 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 2452 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2452 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:06,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2452 Valid, 929 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 06:59:06,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5545 states. [2022-07-12 06:59:06,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5545 to 2949. [2022-07-12 06:59:06,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2945 states have (on average 1.3884550084889644) internal successors, (4089), 2948 states have internal predecessors, (4089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:06,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4089 transitions. [2022-07-12 06:59:06,720 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4089 transitions. Word has length 55 [2022-07-12 06:59:06,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:06,720 INFO L495 AbstractCegarLoop]: Abstraction has 2949 states and 4089 transitions. [2022-07-12 06:59:06,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:06,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4089 transitions. [2022-07-12 06:59:06,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-12 06:59:06,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:06,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:06,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 06:59:06,723 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:06,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:06,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1508633655, now seen corresponding path program 1 times [2022-07-12 06:59:06,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:06,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065122937] [2022-07-12 06:59:06,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:06,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:06,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:06,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065122937] [2022-07-12 06:59:06,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065122937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:06,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:06,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 06:59:06,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595682836] [2022-07-12 06:59:06,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:06,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 06:59:06,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:06,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 06:59:06,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:59:06,838 INFO L87 Difference]: Start difference. First operand 2949 states and 4089 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:08,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:08,547 INFO L93 Difference]: Finished difference Result 8251 states and 11646 transitions. [2022-07-12 06:59:08,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:59:08,547 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-07-12 06:59:08,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:08,561 INFO L225 Difference]: With dead ends: 8251 [2022-07-12 06:59:08,561 INFO L226 Difference]: Without dead ends: 6444 [2022-07-12 06:59:08,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-07-12 06:59:08,566 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 2024 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:08,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 1471 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 06:59:08,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6444 states. [2022-07-12 06:59:08,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6444 to 2920. [2022-07-12 06:59:08,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2916 states have (on average 1.3882030178326474) internal successors, (4048), 2919 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:08,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4048 transitions. [2022-07-12 06:59:08,984 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4048 transitions. Word has length 55 [2022-07-12 06:59:08,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:08,984 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4048 transitions. [2022-07-12 06:59:08,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:08,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4048 transitions. [2022-07-12 06:59:08,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-12 06:59:08,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:08,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:08,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:59:08,987 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:08,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:08,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1235712110, now seen corresponding path program 1 times [2022-07-12 06:59:08,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:08,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768784723] [2022-07-12 06:59:08,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:08,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:09,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:09,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:09,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768784723] [2022-07-12 06:59:09,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768784723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:09,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:09,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 06:59:09,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266830301] [2022-07-12 06:59:09,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:09,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 06:59:09,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:09,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 06:59:09,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:59:09,108 INFO L87 Difference]: Start difference. First operand 2920 states and 4048 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:10,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:10,743 INFO L93 Difference]: Finished difference Result 7125 states and 10083 transitions. [2022-07-12 06:59:10,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:59:10,745 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-07-12 06:59:10,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:10,754 INFO L225 Difference]: With dead ends: 7125 [2022-07-12 06:59:10,754 INFO L226 Difference]: Without dead ends: 7120 [2022-07-12 06:59:10,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-07-12 06:59:10,756 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 2336 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2336 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:10,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2336 Valid, 1222 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 06:59:10,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7120 states. [2022-07-12 06:59:11,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7120 to 2920. [2022-07-12 06:59:11,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2916 states have (on average 1.387517146776406) internal successors, (4046), 2919 states have internal predecessors, (4046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:11,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4046 transitions. [2022-07-12 06:59:11,195 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4046 transitions. Word has length 55 [2022-07-12 06:59:11,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:11,195 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4046 transitions. [2022-07-12 06:59:11,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:11,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4046 transitions. [2022-07-12 06:59:11,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-12 06:59:11,198 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:11,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:11,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 06:59:11,199 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:11,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:11,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1411677613, now seen corresponding path program 1 times [2022-07-12 06:59:11,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:11,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959938812] [2022-07-12 06:59:11,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:11,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:11,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:11,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959938812] [2022-07-12 06:59:11,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959938812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:11,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:11,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:59:11,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571197049] [2022-07-12 06:59:11,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:11,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:59:11,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:11,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:59:11,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:11,238 INFO L87 Difference]: Start difference. First operand 2920 states and 4046 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) [2022-07-12 06:59:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:11,708 INFO L93 Difference]: Finished difference Result 4193 states and 5857 transitions. [2022-07-12 06:59:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:59:11,709 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 [2022-07-12 06:59:11,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:11,712 INFO L225 Difference]: With dead ends: 4193 [2022-07-12 06:59:11,712 INFO L226 Difference]: Without dead ends: 2927 [2022-07-12 06:59:11,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:11,714 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 224 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 797 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 [2022-07-12 06:59:11,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 797 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:11,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2022-07-12 06:59:12,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2920. [2022-07-12 06:59:12,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2916 states have (on average 1.3737997256515775) internal successors, (4006), 2919 states have internal predecessors, (4006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4006 transitions. [2022-07-12 06:59:12,119 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4006 transitions. Word has length 56 [2022-07-12 06:59:12,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:12,119 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4006 transitions. [2022-07-12 06:59:12,120 INFO L496 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) [2022-07-12 06:59:12,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4006 transitions. [2022-07-12 06:59:12,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-12 06:59:12,123 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:12,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:12,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 06:59:12,123 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:12,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:12,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1038080617, now seen corresponding path program 1 times [2022-07-12 06:59:12,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:12,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527881686] [2022-07-12 06:59:12,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:12,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:12,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:12,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:12,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527881686] [2022-07-12 06:59:12,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527881686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:12,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:12,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:59:12,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81845076] [2022-07-12 06:59:12,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:12,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:59:12,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:12,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:59:12,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:12,162 INFO L87 Difference]: Start difference. First operand 2920 states and 4006 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) [2022-07-12 06:59:12,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:12,531 INFO L93 Difference]: Finished difference Result 4260 states and 5889 transitions. [2022-07-12 06:59:12,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:59:12,532 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 [2022-07-12 06:59:12,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:12,535 INFO L225 Difference]: With dead ends: 4260 [2022-07-12 06:59:12,535 INFO L226 Difference]: Without dead ends: 2926 [2022-07-12 06:59:12,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:12,537 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 240 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:12,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 802 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:12,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2022-07-12 06:59:12,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2920. [2022-07-12 06:59:12,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2916 states have (on average 1.3614540466392318) internal successors, (3970), 2919 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 3970 transitions. [2022-07-12 06:59:12,945 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 3970 transitions. Word has length 56 [2022-07-12 06:59:12,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:12,945 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 3970 transitions. [2022-07-12 06:59:12,946 INFO L496 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) [2022-07-12 06:59:12,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 3970 transitions. [2022-07-12 06:59:12,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-12 06:59:12,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:12,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:12,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 06:59:12,949 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:12,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:12,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1735355720, now seen corresponding path program 1 times [2022-07-12 06:59:12,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:12,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886531355] [2022-07-12 06:59:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:12,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:12,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:12,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:12,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886531355] [2022-07-12 06:59:12,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886531355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:12,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:12,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:59:12,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538480072] [2022-07-12 06:59:12,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:12,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:59:12,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:12,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:59:12,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:12,989 INFO L87 Difference]: Start difference. First operand 2920 states and 3970 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) [2022-07-12 06:59:13,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:13,520 INFO L93 Difference]: Finished difference Result 4010 states and 5458 transitions. [2022-07-12 06:59:13,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:59:13,521 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 [2022-07-12 06:59:13,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:13,525 INFO L225 Difference]: With dead ends: 4010 [2022-07-12 06:59:13,525 INFO L226 Difference]: Without dead ends: 2911 [2022-07-12 06:59:13,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:13,529 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 259 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:13,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 813 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:13,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2022-07-12 06:59:14,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2905. [2022-07-12 06:59:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2905 states, 2901 states have (on average 1.3340227507755946) internal successors, (3870), 2904 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:14,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 3870 transitions. [2022-07-12 06:59:14,022 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 3870 transitions. Word has length 56 [2022-07-12 06:59:14,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:14,023 INFO L495 AbstractCegarLoop]: Abstraction has 2905 states and 3870 transitions. [2022-07-12 06:59:14,023 INFO L496 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) [2022-07-12 06:59:14,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 3870 transitions. [2022-07-12 06:59:14,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-12 06:59:14,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:14,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:14,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 06:59:14,026 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:14,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:14,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1293695138, now seen corresponding path program 1 times [2022-07-12 06:59:14,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:14,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134343405] [2022-07-12 06:59:14,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:14,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:14,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:14,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134343405] [2022-07-12 06:59:14,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134343405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:14,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:14,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:59:14,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347517226] [2022-07-12 06:59:14,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:14,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:59:14,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:14,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:59:14,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:14,059 INFO L87 Difference]: Start difference. First operand 2905 states and 3870 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:14,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:14,585 INFO L93 Difference]: Finished difference Result 4583 states and 6152 transitions. [2022-07-12 06:59:14,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:59:14,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-07-12 06:59:14,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:14,590 INFO L225 Difference]: With dead ends: 4583 [2022-07-12 06:59:14,590 INFO L226 Difference]: Without dead ends: 3323 [2022-07-12 06:59:14,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:14,593 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 324 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:14,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 532 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:14,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2022-07-12 06:59:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 2723. [2022-07-12 06:59:14,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 2719 states have (on average 1.3365207796984184) internal successors, (3634), 2722 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:14,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3634 transitions. [2022-07-12 06:59:14,965 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3634 transitions. Word has length 57 [2022-07-12 06:59:14,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:14,966 INFO L495 AbstractCegarLoop]: Abstraction has 2723 states and 3634 transitions. [2022-07-12 06:59:14,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:14,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3634 transitions. [2022-07-12 06:59:14,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-12 06:59:14,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:14,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:14,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 06:59:14,969 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:14,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:14,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1073895861, now seen corresponding path program 1 times [2022-07-12 06:59:14,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:14,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134786329] [2022-07-12 06:59:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:14,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:15,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:15,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134786329] [2022-07-12 06:59:15,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134786329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:15,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:15,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 06:59:15,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969266760] [2022-07-12 06:59:15,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:15,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 06:59:15,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:15,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 06:59:15,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:59:15,255 INFO L87 Difference]: Start difference. First operand 2723 states and 3634 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:16,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:16,969 INFO L93 Difference]: Finished difference Result 6103 states and 8287 transitions. [2022-07-12 06:59:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:59:16,969 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-12 06:59:16,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:16,976 INFO L225 Difference]: With dead ends: 6103 [2022-07-12 06:59:16,976 INFO L226 Difference]: Without dead ends: 5689 [2022-07-12 06:59:16,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2022-07-12 06:59:16,978 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 2589 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2589 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:16,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2589 Valid, 3188 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 06:59:16,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5689 states. [2022-07-12 06:59:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5689 to 2677. [2022-07-12 06:59:17,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 2674 states have (on average 1.337696335078534) internal successors, (3577), 2676 states have internal predecessors, (3577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:17,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 3577 transitions. [2022-07-12 06:59:17,387 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 3577 transitions. Word has length 58 [2022-07-12 06:59:17,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:17,388 INFO L495 AbstractCegarLoop]: Abstraction has 2677 states and 3577 transitions. [2022-07-12 06:59:17,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:17,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 3577 transitions. [2022-07-12 06:59:17,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-12 06:59:17,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:17,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:17,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 06:59:17,390 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:17,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:17,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1243428052, now seen corresponding path program 1 times [2022-07-12 06:59:17,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:17,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636780268] [2022-07-12 06:59:17,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:17,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:17,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:17,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636780268] [2022-07-12 06:59:17,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636780268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:17,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:17,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 06:59:17,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887409410] [2022-07-12 06:59:17,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:17,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 06:59:17,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:17,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 06:59:17,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:59:17,643 INFO L87 Difference]: Start difference. First operand 2677 states and 3577 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:19,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:19,216 INFO L93 Difference]: Finished difference Result 5282 states and 7173 transitions. [2022-07-12 06:59:19,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:59:19,216 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-12 06:59:19,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:19,222 INFO L225 Difference]: With dead ends: 5282 [2022-07-12 06:59:19,222 INFO L226 Difference]: Without dead ends: 5171 [2022-07-12 06:59:19,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-07-12 06:59:19,223 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 2377 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2377 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:19,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2377 Valid, 2713 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 06:59:19,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5171 states. [2022-07-12 06:59:19,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5171 to 2662. [2022-07-12 06:59:19,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2660 states have (on average 1.33796992481203) internal successors, (3559), 2661 states have internal predecessors, (3559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:19,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3559 transitions. [2022-07-12 06:59:19,665 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3559 transitions. Word has length 58 [2022-07-12 06:59:19,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:19,665 INFO L495 AbstractCegarLoop]: Abstraction has 2662 states and 3559 transitions. [2022-07-12 06:59:19,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3559 transitions. [2022-07-12 06:59:19,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-12 06:59:19,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:19,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:19,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 06:59:19,668 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:19,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:19,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1779959307, now seen corresponding path program 1 times [2022-07-12 06:59:19,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:19,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954370481] [2022-07-12 06:59:19,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:19,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:19,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:19,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954370481] [2022-07-12 06:59:19,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954370481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:19,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:19,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 06:59:19,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125057335] [2022-07-12 06:59:19,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:19,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 06:59:19,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:19,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 06:59:19,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:59:19,933 INFO L87 Difference]: Start difference. First operand 2662 states and 3559 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:21,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:21,842 INFO L93 Difference]: Finished difference Result 5380 states and 7290 transitions. [2022-07-12 06:59:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 06:59:21,842 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-12 06:59:21,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:21,848 INFO L225 Difference]: With dead ends: 5380 [2022-07-12 06:59:21,848 INFO L226 Difference]: Without dead ends: 5024 [2022-07-12 06:59:21,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2022-07-12 06:59:21,851 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 3758 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3758 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:21,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3758 Valid, 2537 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 06:59:21,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5024 states. [2022-07-12 06:59:22,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5024 to 2611. [2022-07-12 06:59:22,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2610 states have (on average 1.3398467432950192) internal successors, (3497), 2610 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:22,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3497 transitions. [2022-07-12 06:59:22,391 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3497 transitions. Word has length 58 [2022-07-12 06:59:22,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:22,391 INFO L495 AbstractCegarLoop]: Abstraction has 2611 states and 3497 transitions. [2022-07-12 06:59:22,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:22,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3497 transitions. [2022-07-12 06:59:22,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 06:59:22,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:22,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:22,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 06:59:22,395 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:22,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:22,395 INFO L85 PathProgramCache]: Analyzing trace with hash 590074057, now seen corresponding path program 1 times [2022-07-12 06:59:22,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:22,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434051388] [2022-07-12 06:59:22,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:22,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:22,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:22,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434051388] [2022-07-12 06:59:22,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434051388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:22,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:22,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:59:22,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052137444] [2022-07-12 06:59:22,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:22,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:59:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:22,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:59:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:59:22,460 INFO L87 Difference]: Start difference. First operand 2611 states and 3497 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:23,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:23,679 INFO L93 Difference]: Finished difference Result 6274 states and 8641 transitions. [2022-07-12 06:59:23,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:59:23,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-12 06:59:23,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:23,686 INFO L225 Difference]: With dead ends: 6274 [2022-07-12 06:59:23,686 INFO L226 Difference]: Without dead ends: 4715 [2022-07-12 06:59:23,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:59:23,689 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 1197 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:23,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 881 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:23,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2022-07-12 06:59:24,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 4058. [2022-07-12 06:59:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4058 states, 4057 states have (on average 1.3433571604633967) internal successors, (5450), 4057 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4058 states to 4058 states and 5450 transitions. [2022-07-12 06:59:24,610 INFO L78 Accepts]: Start accepts. Automaton has 4058 states and 5450 transitions. Word has length 68 [2022-07-12 06:59:24,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:24,610 INFO L495 AbstractCegarLoop]: Abstraction has 4058 states and 5450 transitions. [2022-07-12 06:59:24,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:24,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4058 states and 5450 transitions. [2022-07-12 06:59:24,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 06:59:24,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:24,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:24,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 06:59:24,616 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:24,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:24,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1666510355, now seen corresponding path program 1 times [2022-07-12 06:59:24,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:24,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755274569] [2022-07-12 06:59:24,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:24,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:24,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:24,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:24,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755274569] [2022-07-12 06:59:24,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755274569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:24,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:24,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:59:24,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163297707] [2022-07-12 06:59:24,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:24,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:59:24,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:24,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:59:24,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:59:24,687 INFO L87 Difference]: Start difference. First operand 4058 states and 5450 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:25,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:25,758 INFO L93 Difference]: Finished difference Result 4064 states and 5453 transitions. [2022-07-12 06:59:25,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:59:25,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-12 06:59:25,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:25,762 INFO L225 Difference]: With dead ends: 4064 [2022-07-12 06:59:25,762 INFO L226 Difference]: Without dead ends: 3565 [2022-07-12 06:59:25,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:59:25,764 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 640 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:25,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 847 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:59:25,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states. [2022-07-12 06:59:26,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3565 to 3561. [2022-07-12 06:59:26,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 3560 states have (on average 1.347752808988764) internal successors, (4798), 3560 states have internal predecessors, (4798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:26,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 4798 transitions. [2022-07-12 06:59:26,631 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 4798 transitions. Word has length 69 [2022-07-12 06:59:26,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:26,631 INFO L495 AbstractCegarLoop]: Abstraction has 3561 states and 4798 transitions. [2022-07-12 06:59:26,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:26,632 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 4798 transitions. [2022-07-12 06:59:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 06:59:26,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:26,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:26,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 06:59:26,635 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:26,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:26,635 INFO L85 PathProgramCache]: Analyzing trace with hash -533504505, now seen corresponding path program 1 times [2022-07-12 06:59:26,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:26,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425748756] [2022-07-12 06:59:26,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:26,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:26,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:26,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425748756] [2022-07-12 06:59:26,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425748756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:26,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:26,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:59:26,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647239274] [2022-07-12 06:59:26,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:26,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:59:26,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:26,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:59:26,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:26,673 INFO L87 Difference]: Start difference. First operand 3561 states and 4798 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:28,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:28,116 INFO L93 Difference]: Finished difference Result 8305 states and 11340 transitions. [2022-07-12 06:59:28,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:59:28,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-12 06:59:28,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:28,124 INFO L225 Difference]: With dead ends: 8305 [2022-07-12 06:59:28,124 INFO L226 Difference]: Without dead ends: 5615 [2022-07-12 06:59:28,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:28,128 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 139 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 635 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 [2022-07-12 06:59:28,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 635 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:28,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5615 states. [2022-07-12 06:59:29,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5615 to 5297. [2022-07-12 06:59:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 5296 states have (on average 1.3402567975830815) internal successors, (7098), 5296 states have internal predecessors, (7098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:29,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 7098 transitions. [2022-07-12 06:59:29,395 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 7098 transitions. Word has length 70 [2022-07-12 06:59:29,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:29,395 INFO L495 AbstractCegarLoop]: Abstraction has 5297 states and 7098 transitions. [2022-07-12 06:59:29,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:29,395 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 7098 transitions. [2022-07-12 06:59:29,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 06:59:29,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:29,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:29,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 06:59:29,398 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:29,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:29,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1110878122, now seen corresponding path program 1 times [2022-07-12 06:59:29,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:29,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818333006] [2022-07-12 06:59:29,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:29,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:29,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:29,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818333006] [2022-07-12 06:59:29,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818333006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:29,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:29,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:59:29,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250314535] [2022-07-12 06:59:29,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:29,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:59:29,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:29,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:59:29,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:29,436 INFO L87 Difference]: Start difference. First operand 5297 states and 7098 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:31,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:31,885 INFO L93 Difference]: Finished difference Result 13673 states and 18584 transitions. [2022-07-12 06:59:31,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:59:31,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-07-12 06:59:31,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:31,899 INFO L225 Difference]: With dead ends: 13673 [2022-07-12 06:59:31,899 INFO L226 Difference]: Without dead ends: 9285 [2022-07-12 06:59:31,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:31,903 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 120 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:31,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 629 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:31,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9285 states. [2022-07-12 06:59:34,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9285 to 8547. [2022-07-12 06:59:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8547 states, 8546 states have (on average 1.3433185115843669) internal successors, (11480), 8546 states have internal predecessors, (11480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:34,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8547 states to 8547 states and 11480 transitions. [2022-07-12 06:59:34,022 INFO L78 Accepts]: Start accepts. Automaton has 8547 states and 11480 transitions. Word has length 71 [2022-07-12 06:59:34,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:34,022 INFO L495 AbstractCegarLoop]: Abstraction has 8547 states and 11480 transitions. [2022-07-12 06:59:34,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:34,023 INFO L276 IsEmpty]: Start isEmpty. Operand 8547 states and 11480 transitions. [2022-07-12 06:59:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 06:59:34,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:34,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:34,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 06:59:34,026 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:34,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:34,027 INFO L85 PathProgramCache]: Analyzing trace with hash -396168239, now seen corresponding path program 1 times [2022-07-12 06:59:34,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:34,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515762640] [2022-07-12 06:59:34,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:34,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:34,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:34,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515762640] [2022-07-12 06:59:34,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515762640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:34,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:34,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:59:34,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893176633] [2022-07-12 06:59:34,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:34,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:59:34,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:34,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:59:34,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:34,065 INFO L87 Difference]: Start difference. First operand 8547 states and 11480 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:38,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:38,441 INFO L93 Difference]: Finished difference Result 23023 states and 31122 transitions. [2022-07-12 06:59:38,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:59:38,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-07-12 06:59:38,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:38,464 INFO L225 Difference]: With dead ends: 23023 [2022-07-12 06:59:38,465 INFO L226 Difference]: Without dead ends: 15385 [2022-07-12 06:59:38,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:38,473 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 102 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:38,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 614 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:38,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15385 states. [2022-07-12 06:59:42,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15385 to 13911. [2022-07-12 06:59:42,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13911 states, 13910 states have (on average 1.3357296908698777) internal successors, (18580), 13910 states have internal predecessors, (18580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:42,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13911 states to 13911 states and 18580 transitions. [2022-07-12 06:59:42,277 INFO L78 Accepts]: Start accepts. Automaton has 13911 states and 18580 transitions. Word has length 73 [2022-07-12 06:59:42,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:42,277 INFO L495 AbstractCegarLoop]: Abstraction has 13911 states and 18580 transitions. [2022-07-12 06:59:42,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:42,277 INFO L276 IsEmpty]: Start isEmpty. Operand 13911 states and 18580 transitions. [2022-07-12 06:59:42,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 06:59:42,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:42,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:42,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 06:59:42,280 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:42,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:42,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1606128063, now seen corresponding path program 1 times [2022-07-12 06:59:42,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:42,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708797330] [2022-07-12 06:59:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:42,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:42,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:42,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:42,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708797330] [2022-07-12 06:59:42,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708797330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:42,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:42,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:59:42,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580606489] [2022-07-12 06:59:42,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:42,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:59:42,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:42,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:59:42,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:59:42,337 INFO L87 Difference]: Start difference. First operand 13911 states and 18580 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:51,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:51,465 INFO L93 Difference]: Finished difference Result 29751 states and 39192 transitions. [2022-07-12 06:59:51,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:59:51,466 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-07-12 06:59:51,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:51,502 INFO L225 Difference]: With dead ends: 29751 [2022-07-12 06:59:51,503 INFO L226 Difference]: Without dead ends: 29749 [2022-07-12 06:59:51,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:59:51,511 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 368 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:51,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1509 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:59:51,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29749 states. [2022-07-12 06:59:56,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29749 to 15255. [2022-07-12 06:59:56,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15255 states, 15254 states have (on average 1.3061492067654386) internal successors, (19924), 15254 states have internal predecessors, (19924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15255 states to 15255 states and 19924 transitions. [2022-07-12 06:59:56,333 INFO L78 Accepts]: Start accepts. Automaton has 15255 states and 19924 transitions. Word has length 75 [2022-07-12 06:59:56,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:56,334 INFO L495 AbstractCegarLoop]: Abstraction has 15255 states and 19924 transitions. [2022-07-12 06:59:56,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:56,334 INFO L276 IsEmpty]: Start isEmpty. Operand 15255 states and 19924 transitions. [2022-07-12 06:59:56,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-12 06:59:56,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:56,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:56,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 06:59:56,337 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 06:59:56,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:56,337 INFO L85 PathProgramCache]: Analyzing trace with hash 824153179, now seen corresponding path program 1 times [2022-07-12 06:59:56,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:56,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063593579] [2022-07-12 06:59:56,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:56,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:56,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:56,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063593579] [2022-07-12 06:59:56,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063593579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:56,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:56,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:59:56,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709910970] [2022-07-12 06:59:56,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:56,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:59:56,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:56,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:59:56,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:56,373 INFO L87 Difference]: Start difference. First operand 15255 states and 19924 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:00:03,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:00:03,173 INFO L93 Difference]: Finished difference Result 36835 states and 48094 transitions. [2022-07-12 07:00:03,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:00:03,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-07-12 07:00:03,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:00:03,211 INFO L225 Difference]: With dead ends: 36835 [2022-07-12 07:00:03,211 INFO L226 Difference]: Without dead ends: 22489 [2022-07-12 07:00:03,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:00:03,231 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 225 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:00:03,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 462 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:00:03,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22489 states. [2022-07-12 07:00:10,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22489 to 22487. [2022-07-12 07:00:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22487 states, 22486 states have (on average 1.289513475051143) internal successors, (28996), 22486 states have internal predecessors, (28996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:00:10,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22487 states to 22487 states and 28996 transitions. [2022-07-12 07:00:10,303 INFO L78 Accepts]: Start accepts. Automaton has 22487 states and 28996 transitions. Word has length 76 [2022-07-12 07:00:10,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:00:10,304 INFO L495 AbstractCegarLoop]: Abstraction has 22487 states and 28996 transitions. [2022-07-12 07:00:10,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:00:10,304 INFO L276 IsEmpty]: Start isEmpty. Operand 22487 states and 28996 transitions. [2022-07-12 07:00:10,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 07:00:10,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:00:10,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:00:10,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 07:00:10,308 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 07:00:10,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:00:10,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1756244585, now seen corresponding path program 1 times [2022-07-12 07:00:10,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:00:10,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016728486] [2022-07-12 07:00:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:00:10,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:00:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:00:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:00:10,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:00:10,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016728486] [2022-07-12 07:00:10,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016728486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:00:10,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:00:10,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 07:00:10,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970696198] [2022-07-12 07:00:10,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:00:10,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:00:10,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:00:10,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:00:10,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:00:10,356 INFO L87 Difference]: Start difference. First operand 22487 states and 28996 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:00:19,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:00:19,266 INFO L93 Difference]: Finished difference Result 32983 states and 42760 transitions. [2022-07-12 07:00:19,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:00:19,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-12 07:00:19,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:00:19,313 INFO L225 Difference]: With dead ends: 32983 [2022-07-12 07:00:19,313 INFO L226 Difference]: Without dead ends: 28121 [2022-07-12 07:00:19,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:00:19,324 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 704 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:00:19,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 963 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:00:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28121 states. [2022-07-12 07:00:27,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28121 to 25631. [2022-07-12 07:00:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25631 states, 25630 states have (on average 1.2866172454155287) internal successors, (32976), 25630 states have internal predecessors, (32976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:00:27,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25631 states to 25631 states and 32976 transitions. [2022-07-12 07:00:27,575 INFO L78 Accepts]: Start accepts. Automaton has 25631 states and 32976 transitions. Word has length 77 [2022-07-12 07:00:27,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:00:27,576 INFO L495 AbstractCegarLoop]: Abstraction has 25631 states and 32976 transitions. [2022-07-12 07:00:27,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:00:27,576 INFO L276 IsEmpty]: Start isEmpty. Operand 25631 states and 32976 transitions. [2022-07-12 07:00:27,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-12 07:00:27,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:00:27,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:00:27,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 07:00:27,579 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 07:00:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:00:27,579 INFO L85 PathProgramCache]: Analyzing trace with hash -51175098, now seen corresponding path program 1 times [2022-07-12 07:00:27,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:00:27,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217665528] [2022-07-12 07:00:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:00:27,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:00:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:00:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:00:27,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:00:27,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217665528] [2022-07-12 07:00:27,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217665528] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:00:27,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:00:27,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:00:27,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723838462] [2022-07-12 07:00:27,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:00:27,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:00:27,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:00:27,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:00:27,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:00:27,612 INFO L87 Difference]: Start difference. First operand 25631 states and 32976 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:00:39,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:00:39,395 INFO L93 Difference]: Finished difference Result 50506 states and 65016 transitions. [2022-07-12 07:00:39,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:00:39,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-07-12 07:00:39,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:00:39,447 INFO L225 Difference]: With dead ends: 50506 [2022-07-12 07:00:39,447 INFO L226 Difference]: Without dead ends: 37808 [2022-07-12 07:00:39,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:00:39,467 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 227 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:00:39,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 364 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:00:39,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37808 states. [2022-07-12 07:00:47,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37808 to 25134. [2022-07-12 07:00:47,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25134 states, 25133 states have (on average 1.283969283412247) internal successors, (32270), 25133 states have internal predecessors, (32270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:00:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25134 states to 25134 states and 32270 transitions. [2022-07-12 07:00:47,891 INFO L78 Accepts]: Start accepts. Automaton has 25134 states and 32270 transitions. Word has length 80 [2022-07-12 07:00:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:00:47,892 INFO L495 AbstractCegarLoop]: Abstraction has 25134 states and 32270 transitions. [2022-07-12 07:00:47,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:00:47,892 INFO L276 IsEmpty]: Start isEmpty. Operand 25134 states and 32270 transitions. [2022-07-12 07:00:47,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-12 07:00:47,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:00:47,899 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:00:47,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 07:00:47,899 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 07:00:47,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:00:47,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1593588101, now seen corresponding path program 1 times [2022-07-12 07:00:47,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:00:47,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706375849] [2022-07-12 07:00:47,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:00:47,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:00:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:00:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:00:47,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:00:47,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706375849] [2022-07-12 07:00:47,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706375849] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:00:47,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804855990] [2022-07-12 07:00:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:00:47,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:00:47,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:00:47,978 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 07:00:47,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 07:00:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:00:48,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-12 07:00:48,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:00:48,744 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:00:48,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 07:00:49,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:00:49,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804855990] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 07:00:49,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 07:00:49,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 21 [2022-07-12 07:00:49,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235039112] [2022-07-12 07:00:49,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 07:00:49,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 07:00:49,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:00:49,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 07:00:49,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-07-12 07:00:49,383 INFO L87 Difference]: Start difference. First operand 25134 states and 32270 transitions. Second operand has 21 states, 21 states have (on average 12.714285714285714) internal successors, (267), 21 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:01:24,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:01:24,184 INFO L93 Difference]: Finished difference Result 110621 states and 141370 transitions. [2022-07-12 07:01:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-07-12 07:01:24,185 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.714285714285714) internal successors, (267), 21 states have internal predecessors, (267), 0 states have call successors, (0), 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 95 [2022-07-12 07:01:24,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:01:24,338 INFO L225 Difference]: With dead ends: 110621 [2022-07-12 07:01:24,338 INFO L226 Difference]: Without dead ends: 86283 [2022-07-12 07:01:24,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2117 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1487, Invalid=5485, Unknown=0, NotChecked=0, Total=6972 [2022-07-12 07:01:24,380 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 5324 mSDsluCounter, 1982 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5324 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:01:24,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5324 Valid, 2296 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 2130 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 07:01:24,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86283 states. [2022-07-12 07:01:38,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86283 to 37204. [2022-07-12 07:01:38,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37204 states, 37203 states have (on average 1.2838480767680025) internal successors, (47763), 37203 states have internal predecessors, (47763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:01:38,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37204 states to 37204 states and 47763 transitions. [2022-07-12 07:01:38,392 INFO L78 Accepts]: Start accepts. Automaton has 37204 states and 47763 transitions. Word has length 95 [2022-07-12 07:01:38,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:01:38,392 INFO L495 AbstractCegarLoop]: Abstraction has 37204 states and 47763 transitions. [2022-07-12 07:01:38,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.714285714285714) internal successors, (267), 21 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:01:38,393 INFO L276 IsEmpty]: Start isEmpty. Operand 37204 states and 47763 transitions. [2022-07-12 07:01:38,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 07:01:38,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:01:38,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:01:38,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 07:01:38,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-12 07:01:38,614 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 07:01:38,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:01:38,615 INFO L85 PathProgramCache]: Analyzing trace with hash -704782632, now seen corresponding path program 1 times [2022-07-12 07:01:38,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:01:38,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064221075] [2022-07-12 07:01:38,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:01:38,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:01:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:01:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:01:38,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:01:38,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064221075] [2022-07-12 07:01:38,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064221075] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:01:38,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890435060] [2022-07-12 07:01:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:01:38,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:01:38,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:01:38,670 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 07:01:38,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 07:01:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:01:38,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 07:01:38,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:01:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:01:39,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 07:01:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:01:39,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890435060] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 07:01:39,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 07:01:39,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2022-07-12 07:01:39,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510284565] [2022-07-12 07:01:39,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 07:01:39,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 07:01:39,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:01:39,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 07:01:39,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-12 07:01:39,246 INFO L87 Difference]: Start difference. First operand 37204 states and 47763 transitions. Second operand has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)