./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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.6.ufo.BOUNDED-12.pals.c.v+nlh-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 bb7f3b8fa32d5493bfca7086e69548af9d6372d67a054dd07846784fcdf24eca --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:20:42,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:20:42,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:20:42,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:20:42,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:20:42,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:20:42,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:20:42,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:20:42,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:20:42,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:20:42,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:20:42,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:20:42,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:20:42,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:20:42,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:20:42,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:20:42,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:20:42,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:20:42,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:20:42,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:20:42,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:20:42,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:20:42,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:20:42,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:20:42,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:20:42,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:20:42,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:20:42,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:20:42,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:20:42,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:20:42,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:20:42,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:20:42,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:20:42,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:20:42,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:20:42,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:20:42,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:20:42,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:20:42,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:20:42,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:20:42,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:20:42,689 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:20:42,721 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:20:42,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:20:42,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:20:42,722 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:20:42,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:20:42,723 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:20:42,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:20:42,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:20:42,724 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:20:42,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:20:42,725 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:20:42,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:20:42,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:20:42,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:20:42,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:20:42,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:20:42,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:20:42,726 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:20:42,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:20:42,727 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:20:42,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:20:42,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:20:42,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:20:42,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:20:42,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:20:42,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:20:42,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:20:42,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:20:42,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:20:42,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:20:42,729 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:20:42,729 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:20:42,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:20:42,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:20:42,730 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb7f3b8fa32d5493bfca7086e69548af9d6372d67a054dd07846784fcdf24eca [2021-12-14 15:20:42,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:20:42,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:20:42,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:20:42,999 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:20:43,000 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:20:43,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2021-12-14 15:20:43,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3824fc03e/39cb46670a0745fd8a168a46113025e7/FLAG293e5ce13 [2021-12-14 15:20:43,494 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:20:43,495 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2021-12-14 15:20:43,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3824fc03e/39cb46670a0745fd8a168a46113025e7/FLAG293e5ce13 [2021-12-14 15:20:43,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3824fc03e/39cb46670a0745fd8a168a46113025e7 [2021-12-14 15:20:43,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:20:43,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:20:43,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:20:43,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:20:43,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:20:43,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:20:43" (1/1) ... [2021-12-14 15:20:43,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29131e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:43, skipping insertion in model container [2021-12-14 15:20:43,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:20:43" (1/1) ... [2021-12-14 15:20:43,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:20:43,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:20:43,785 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.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[9241,9254] [2021-12-14 15:20:43,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:20:43,833 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:20:43,892 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.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[9241,9254] [2021-12-14 15:20:43,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:20:43,959 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:20:43,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:43 WrapperNode [2021-12-14 15:20:43,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:20:43,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:20:43,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:20:43,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:20:43,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:43" (1/1) ... [2021-12-14 15:20:43,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:43" (1/1) ... [2021-12-14 15:20:44,014 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 742 [2021-12-14 15:20:44,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:20:44,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:20:44,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:20:44,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:20:44,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:43" (1/1) ... [2021-12-14 15:20:44,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:43" (1/1) ... [2021-12-14 15:20:44,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:43" (1/1) ... [2021-12-14 15:20:44,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:43" (1/1) ... [2021-12-14 15:20:44,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:43" (1/1) ... [2021-12-14 15:20:44,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:43" (1/1) ... [2021-12-14 15:20:44,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:43" (1/1) ... [2021-12-14 15:20:44,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:20:44,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:20:44,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:20:44,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:20:44,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:43" (1/1) ... [2021-12-14 15:20:44,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:20:44,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:20:44,087 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:20:44,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:20:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:20:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:20:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:20:44,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:20:44,212 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:20:44,213 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:20:44,803 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:20:44,810 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:20:44,810 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 15:20:44,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:20:44 BoogieIcfgContainer [2021-12-14 15:20:44,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:20:44,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:20:44,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:20:44,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:20:44,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:20:43" (1/3) ... [2021-12-14 15:20:44,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e73b518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:20:44, skipping insertion in model container [2021-12-14 15:20:44,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:43" (2/3) ... [2021-12-14 15:20:44,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e73b518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:20:44, skipping insertion in model container [2021-12-14 15:20:44,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:20:44" (3/3) ... [2021-12-14 15:20:44,819 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2021-12-14 15:20:44,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:20:44,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 15:20:44,861 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:20:44,867 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:20:44,867 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 15:20:44,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 176 states have (on average 1.7613636363636365) internal successors, (310), 177 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:44,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-14 15:20:44,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:44,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:44,889 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:44,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:44,894 INFO L85 PathProgramCache]: Analyzing trace with hash 2136906399, now seen corresponding path program 1 times [2021-12-14 15:20:44,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:44,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947253532] [2021-12-14 15:20:44,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:44,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:45,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:45,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947253532] [2021-12-14 15:20:45,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947253532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:45,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:45,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:20:45,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817178477] [2021-12-14 15:20:45,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:45,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:20:45,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:45,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:20:45,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:20:45,353 INFO L87 Difference]: Start difference. First operand has 178 states, 176 states have (on average 1.7613636363636365) internal successors, (310), 177 states have internal predecessors, (310), 0 states have call successors, (0), 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 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:45,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:45,870 INFO L93 Difference]: Finished difference Result 1147 states and 1843 transitions. [2021-12-14 15:20:45,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 15:20:45,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-14 15:20:45,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:45,893 INFO L225 Difference]: With dead ends: 1147 [2021-12-14 15:20:45,893 INFO L226 Difference]: Without dead ends: 1037 [2021-12-14 15:20:45,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:20:45,901 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 2029 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 3789 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:45,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2029 Valid, 3789 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:20:45,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2021-12-14 15:20:45,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 270. [2021-12-14 15:20:45,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.449814126394052) internal successors, (390), 269 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:45,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 390 transitions. [2021-12-14 15:20:45,964 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 390 transitions. Word has length 91 [2021-12-14 15:20:45,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:45,965 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 390 transitions. [2021-12-14 15:20:45,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:45,966 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 390 transitions. [2021-12-14 15:20:45,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 15:20:45,968 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:45,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:45,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:20:45,969 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:45,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:45,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1446649810, now seen corresponding path program 1 times [2021-12-14 15:20:45,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:45,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566343863] [2021-12-14 15:20:45,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:45,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:46,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:46,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566343863] [2021-12-14 15:20:46,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566343863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:46,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:46,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:20:46,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936521349] [2021-12-14 15:20:46,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:46,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:20:46,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:46,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:20:46,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:20:46,183 INFO L87 Difference]: Start difference. First operand 270 states and 390 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:46,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:46,461 INFO L93 Difference]: Finished difference Result 1236 states and 1911 transitions. [2021-12-14 15:20:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:20:46,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-14 15:20:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:46,469 INFO L225 Difference]: With dead ends: 1236 [2021-12-14 15:20:46,470 INFO L226 Difference]: Without dead ends: 1096 [2021-12-14 15:20:46,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:20:46,476 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 1352 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:46,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1352 Valid, 2393 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:20:46,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2021-12-14 15:20:46,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 429. [2021-12-14 15:20:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.5) internal successors, (642), 428 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:46,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 642 transitions. [2021-12-14 15:20:46,531 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 642 transitions. Word has length 93 [2021-12-14 15:20:46,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:46,532 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 642 transitions. [2021-12-14 15:20:46,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:46,533 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 642 transitions. [2021-12-14 15:20:46,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 15:20:46,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:46,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:46,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:20:46,536 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:46,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:46,536 INFO L85 PathProgramCache]: Analyzing trace with hash 529896762, now seen corresponding path program 1 times [2021-12-14 15:20:46,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:46,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430474169] [2021-12-14 15:20:46,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:46,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:46,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:46,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430474169] [2021-12-14 15:20:46,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430474169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:46,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:46,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:20:46,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853885199] [2021-12-14 15:20:46,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:46,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:20:46,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:46,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:20:46,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:20:46,719 INFO L87 Difference]: Start difference. First operand 429 states and 642 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:46,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:46,969 INFO L93 Difference]: Finished difference Result 1390 states and 2155 transitions. [2021-12-14 15:20:46,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:20:46,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-14 15:20:46,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:46,977 INFO L225 Difference]: With dead ends: 1390 [2021-12-14 15:20:46,978 INFO L226 Difference]: Without dead ends: 1250 [2021-12-14 15:20:46,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:20:46,981 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1558 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:46,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1558 Valid, 1993 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:20:46,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-12-14 15:20:47,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 652. [2021-12-14 15:20:47,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 1.5284178187403994) internal successors, (995), 651 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 995 transitions. [2021-12-14 15:20:47,022 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 995 transitions. Word has length 93 [2021-12-14 15:20:47,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:47,023 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 995 transitions. [2021-12-14 15:20:47,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:47,023 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 995 transitions. [2021-12-14 15:20:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 15:20:47,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:47,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:47,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:20:47,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:47,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1234930226, now seen corresponding path program 1 times [2021-12-14 15:20:47,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:47,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348362588] [2021-12-14 15:20:47,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:47,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:47,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:47,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:47,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348362588] [2021-12-14 15:20:47,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348362588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:47,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:47,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:20:47,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587663193] [2021-12-14 15:20:47,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:47,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:20:47,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:47,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:20:47,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:20:47,119 INFO L87 Difference]: Start difference. First operand 652 states and 995 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:47,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:47,350 INFO L93 Difference]: Finished difference Result 1539 states and 2391 transitions. [2021-12-14 15:20:47,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:20:47,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-14 15:20:47,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:47,356 INFO L225 Difference]: With dead ends: 1539 [2021-12-14 15:20:47,356 INFO L226 Difference]: Without dead ends: 1399 [2021-12-14 15:20:47,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:20:47,358 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 1760 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:47,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1760 Valid, 1822 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:20:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2021-12-14 15:20:47,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 796. [2021-12-14 15:20:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 1.538364779874214) internal successors, (1223), 795 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1223 transitions. [2021-12-14 15:20:47,410 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1223 transitions. Word has length 93 [2021-12-14 15:20:47,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:47,410 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 1223 transitions. [2021-12-14 15:20:47,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:47,411 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1223 transitions. [2021-12-14 15:20:47,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 15:20:47,412 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:47,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:47,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:20:47,412 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:47,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:47,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1576423674, now seen corresponding path program 1 times [2021-12-14 15:20:47,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:47,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114092776] [2021-12-14 15:20:47,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:47,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:47,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:47,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:47,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114092776] [2021-12-14 15:20:47,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114092776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:47,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:47,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:20:47,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908947429] [2021-12-14 15:20:47,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:47,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:20:47,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:47,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:20:47,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:20:47,516 INFO L87 Difference]: Start difference. First operand 796 states and 1223 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:47,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:47,758 INFO L93 Difference]: Finished difference Result 1678 states and 2611 transitions. [2021-12-14 15:20:47,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:20:47,759 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-14 15:20:47,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:47,764 INFO L225 Difference]: With dead ends: 1678 [2021-12-14 15:20:47,765 INFO L226 Difference]: Without dead ends: 1538 [2021-12-14 15:20:47,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:20:47,767 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 1863 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:47,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1863 Valid, 1822 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:20:47,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2021-12-14 15:20:47,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 935. [2021-12-14 15:20:47,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 934 states have (on average 1.544967880085653) internal successors, (1443), 934 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:47,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1443 transitions. [2021-12-14 15:20:47,847 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1443 transitions. Word has length 93 [2021-12-14 15:20:47,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:47,848 INFO L470 AbstractCegarLoop]: Abstraction has 935 states and 1443 transitions. [2021-12-14 15:20:47,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:47,848 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1443 transitions. [2021-12-14 15:20:47,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 15:20:47,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:47,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:47,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:20:47,850 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:47,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1813331907, now seen corresponding path program 1 times [2021-12-14 15:20:47,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:47,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540266251] [2021-12-14 15:20:47,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:47,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:48,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:48,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540266251] [2021-12-14 15:20:48,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540266251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:48,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:48,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:20:48,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383738657] [2021-12-14 15:20:48,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:48,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:20:48,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:48,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:20:48,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:20:48,081 INFO L87 Difference]: Start difference. First operand 935 states and 1443 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:48,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:48,326 INFO L93 Difference]: Finished difference Result 1698 states and 2650 transitions. [2021-12-14 15:20:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:20:48,326 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-14 15:20:48,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:48,330 INFO L225 Difference]: With dead ends: 1698 [2021-12-14 15:20:48,330 INFO L226 Difference]: Without dead ends: 937 [2021-12-14 15:20:48,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:20:48,332 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 773 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:48,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 953 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:20:48,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2021-12-14 15:20:48,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 935. [2021-12-14 15:20:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 934 states have (on average 1.5385438972162742) internal successors, (1437), 934 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:48,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1437 transitions. [2021-12-14 15:20:48,383 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1437 transitions. Word has length 93 [2021-12-14 15:20:48,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:48,383 INFO L470 AbstractCegarLoop]: Abstraction has 935 states and 1437 transitions. [2021-12-14 15:20:48,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:48,384 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1437 transitions. [2021-12-14 15:20:48,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 15:20:48,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:48,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:48,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:20:48,385 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:48,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:48,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1570207556, now seen corresponding path program 1 times [2021-12-14 15:20:48,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:48,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166431600] [2021-12-14 15:20:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:48,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:48,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:48,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:48,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166431600] [2021-12-14 15:20:48,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166431600] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:48,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:48,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:20:48,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302552098] [2021-12-14 15:20:48,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:48,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:20:48,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:48,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:20:48,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:20:48,441 INFO L87 Difference]: Start difference. First operand 935 states and 1437 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:48,533 INFO L93 Difference]: Finished difference Result 2386 states and 3718 transitions. [2021-12-14 15:20:48,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:20:48,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-14 15:20:48,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:48,540 INFO L225 Difference]: With dead ends: 2386 [2021-12-14 15:20:48,540 INFO L226 Difference]: Without dead ends: 1625 [2021-12-14 15:20:48,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:20:48,542 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 99 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:48,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 562 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:20:48,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2021-12-14 15:20:48,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1623. [2021-12-14 15:20:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1622 states have (on average 1.5382244143033292) internal successors, (2495), 1622 states have internal predecessors, (2495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:48,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2495 transitions. [2021-12-14 15:20:48,650 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2495 transitions. Word has length 93 [2021-12-14 15:20:48,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:48,651 INFO L470 AbstractCegarLoop]: Abstraction has 1623 states and 2495 transitions. [2021-12-14 15:20:48,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:48,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2495 transitions. [2021-12-14 15:20:48,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 15:20:48,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:48,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:48,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:20:48,653 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:48,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:48,654 INFO L85 PathProgramCache]: Analyzing trace with hash -906608998, now seen corresponding path program 1 times [2021-12-14 15:20:48,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:48,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213270837] [2021-12-14 15:20:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:48,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:48,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:48,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213270837] [2021-12-14 15:20:48,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213270837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:48,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:48,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:20:48,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172206831] [2021-12-14 15:20:48,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:48,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:20:48,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:48,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:20:48,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:20:48,752 INFO L87 Difference]: Start difference. First operand 1623 states and 2495 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:49,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:49,052 INFO L93 Difference]: Finished difference Result 3260 states and 5043 transitions. [2021-12-14 15:20:49,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:20:49,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-14 15:20:49,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:49,063 INFO L225 Difference]: With dead ends: 3260 [2021-12-14 15:20:49,063 INFO L226 Difference]: Without dead ends: 2995 [2021-12-14 15:20:49,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:20:49,066 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 1631 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 2500 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:49,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1631 Valid, 2500 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:20:49,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2021-12-14 15:20:49,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1897. [2021-12-14 15:20:49,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1897 states, 1896 states have (on average 1.5411392405063291) internal successors, (2922), 1896 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1897 states to 1897 states and 2922 transitions. [2021-12-14 15:20:49,187 INFO L78 Accepts]: Start accepts. Automaton has 1897 states and 2922 transitions. Word has length 93 [2021-12-14 15:20:49,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:49,187 INFO L470 AbstractCegarLoop]: Abstraction has 1897 states and 2922 transitions. [2021-12-14 15:20:49,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:49,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1897 states and 2922 transitions. [2021-12-14 15:20:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 15:20:49,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:49,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:49,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:20:49,189 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:49,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:49,190 INFO L85 PathProgramCache]: Analyzing trace with hash 861848230, now seen corresponding path program 1 times [2021-12-14 15:20:49,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:49,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736734131] [2021-12-14 15:20:49,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:49,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:49,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:49,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736734131] [2021-12-14 15:20:49,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736734131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:49,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:49,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:20:49,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670757421] [2021-12-14 15:20:49,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:49,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:20:49,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:49,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:20:49,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:20:49,286 INFO L87 Difference]: Start difference. First operand 1897 states and 2922 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:49,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:49,627 INFO L93 Difference]: Finished difference Result 3544 states and 5486 transitions. [2021-12-14 15:20:49,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:20:49,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-14 15:20:49,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:49,638 INFO L225 Difference]: With dead ends: 3544 [2021-12-14 15:20:49,639 INFO L226 Difference]: Without dead ends: 3279 [2021-12-14 15:20:49,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:20:49,640 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1747 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:49,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 2267 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:20:49,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2021-12-14 15:20:49,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2181. [2021-12-14 15:20:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.5435779816513762) internal successors, (3365), 2180 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:49,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3365 transitions. [2021-12-14 15:20:49,788 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3365 transitions. Word has length 93 [2021-12-14 15:20:49,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:49,789 INFO L470 AbstractCegarLoop]: Abstraction has 2181 states and 3365 transitions. [2021-12-14 15:20:49,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:49,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3365 transitions. [2021-12-14 15:20:49,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-14 15:20:49,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:49,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:49,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:20:49,791 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:49,792 INFO L85 PathProgramCache]: Analyzing trace with hash 376805043, now seen corresponding path program 1 times [2021-12-14 15:20:49,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:49,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027973861] [2021-12-14 15:20:49,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:49,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:49,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:49,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:49,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027973861] [2021-12-14 15:20:49,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027973861] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:49,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:49,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:20:49,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59756265] [2021-12-14 15:20:49,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:49,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:20:49,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:49,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:20:49,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:20:49,853 INFO L87 Difference]: Start difference. First operand 2181 states and 3365 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:50,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:50,104 INFO L93 Difference]: Finished difference Result 4311 states and 6677 transitions. [2021-12-14 15:20:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:20:50,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-12-14 15:20:50,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:50,113 INFO L225 Difference]: With dead ends: 4311 [2021-12-14 15:20:50,113 INFO L226 Difference]: Without dead ends: 2181 [2021-12-14 15:20:50,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:20:50,117 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 644 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:50,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 139 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:20:50,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2021-12-14 15:20:50,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2181. [2021-12-14 15:20:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.5293577981651376) internal successors, (3334), 2180 states have internal predecessors, (3334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3334 transitions. [2021-12-14 15:20:50,277 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3334 transitions. Word has length 94 [2021-12-14 15:20:50,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:50,278 INFO L470 AbstractCegarLoop]: Abstraction has 2181 states and 3334 transitions. [2021-12-14 15:20:50,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3334 transitions. [2021-12-14 15:20:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-14 15:20:50,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:50,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:50,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:20:50,280 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:50,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:50,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1521549230, now seen corresponding path program 1 times [2021-12-14 15:20:50,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:50,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510647233] [2021-12-14 15:20:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:50,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:50,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:50,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510647233] [2021-12-14 15:20:50,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510647233] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:50,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:50,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:20:50,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961245939] [2021-12-14 15:20:50,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:50,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:20:50,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:50,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:20:50,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:20:50,339 INFO L87 Difference]: Start difference. First operand 2181 states and 3334 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:50,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:50,608 INFO L93 Difference]: Finished difference Result 4315 states and 6620 transitions. [2021-12-14 15:20:50,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:20:50,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 [2021-12-14 15:20:50,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:50,617 INFO L225 Difference]: With dead ends: 4315 [2021-12-14 15:20:50,617 INFO L226 Difference]: Without dead ends: 2181 [2021-12-14 15:20:50,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:20:50,621 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 649 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:50,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 131 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:20:50,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2021-12-14 15:20:50,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2181. [2021-12-14 15:20:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.515137614678899) internal successors, (3303), 2180 states have internal predecessors, (3303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3303 transitions. [2021-12-14 15:20:50,798 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3303 transitions. Word has length 95 [2021-12-14 15:20:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:50,798 INFO L470 AbstractCegarLoop]: Abstraction has 2181 states and 3303 transitions. [2021-12-14 15:20:50,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:50,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3303 transitions. [2021-12-14 15:20:50,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-14 15:20:50,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:50,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:50,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:20:50,802 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:50,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:50,803 INFO L85 PathProgramCache]: Analyzing trace with hash -824700769, now seen corresponding path program 1 times [2021-12-14 15:20:50,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:50,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054533623] [2021-12-14 15:20:50,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:50,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:50,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:50,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054533623] [2021-12-14 15:20:50,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054533623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:50,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:50,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:20:50,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549880734] [2021-12-14 15:20:50,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:50,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:20:50,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:50,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:20:50,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:20:50,861 INFO L87 Difference]: Start difference. First operand 2181 states and 3303 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:51,107 INFO L93 Difference]: Finished difference Result 4299 states and 6540 transitions. [2021-12-14 15:20:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:20:51,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-12-14 15:20:51,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:51,116 INFO L225 Difference]: With dead ends: 4299 [2021-12-14 15:20:51,116 INFO L226 Difference]: Without dead ends: 2181 [2021-12-14 15:20:51,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:20:51,120 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 597 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:51,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [597 Valid, 163 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:20:51,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2021-12-14 15:20:51,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2181. [2021-12-14 15:20:51,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.5009174311926605) internal successors, (3272), 2180 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:51,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3272 transitions. [2021-12-14 15:20:51,285 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3272 transitions. Word has length 96 [2021-12-14 15:20:51,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:51,285 INFO L470 AbstractCegarLoop]: Abstraction has 2181 states and 3272 transitions. [2021-12-14 15:20:51,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:51,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3272 transitions. [2021-12-14 15:20:51,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-14 15:20:51,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:51,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:51,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:20:51,287 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:51,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:51,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1248287654, now seen corresponding path program 1 times [2021-12-14 15:20:51,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:51,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247237453] [2021-12-14 15:20:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:51,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:51,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:51,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:51,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247237453] [2021-12-14 15:20:51,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247237453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:51,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:51,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:20:51,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568587537] [2021-12-14 15:20:51,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:51,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:20:51,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:51,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:20:51,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:20:51,340 INFO L87 Difference]: Start difference. First operand 2181 states and 3272 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:51,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:51,598 INFO L93 Difference]: Finished difference Result 4303 states and 6483 transitions. [2021-12-14 15:20:51,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:20:51,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-12-14 15:20:51,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:51,623 INFO L225 Difference]: With dead ends: 4303 [2021-12-14 15:20:51,623 INFO L226 Difference]: Without dead ends: 2181 [2021-12-14 15:20:51,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:20:51,628 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 602 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:51,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:20:51,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2021-12-14 15:20:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2181. [2021-12-14 15:20:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.486697247706422) internal successors, (3241), 2180 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:51,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3241 transitions. [2021-12-14 15:20:51,808 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3241 transitions. Word has length 97 [2021-12-14 15:20:51,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:51,809 INFO L470 AbstractCegarLoop]: Abstraction has 2181 states and 3241 transitions. [2021-12-14 15:20:51,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:51,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3241 transitions. [2021-12-14 15:20:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-14 15:20:51,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:51,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:51,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:20:51,811 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:51,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1071880717, now seen corresponding path program 1 times [2021-12-14 15:20:51,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:51,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562101146] [2021-12-14 15:20:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:51,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:51,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:51,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562101146] [2021-12-14 15:20:51,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562101146] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:51,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:51,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:20:51,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957020051] [2021-12-14 15:20:51,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:51,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:20:51,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:51,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:20:51,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:20:51,891 INFO L87 Difference]: Start difference. First operand 2181 states and 3241 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:52,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:52,180 INFO L93 Difference]: Finished difference Result 4307 states and 6426 transitions. [2021-12-14 15:20:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:20:52,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-12-14 15:20:52,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:52,185 INFO L225 Difference]: With dead ends: 4307 [2021-12-14 15:20:52,186 INFO L226 Difference]: Without dead ends: 2181 [2021-12-14 15:20:52,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:20:52,189 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 607 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:52,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [607 Valid, 147 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:20:52,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2021-12-14 15:20:52,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2181. [2021-12-14 15:20:52,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.4724770642201834) internal successors, (3210), 2180 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3210 transitions. [2021-12-14 15:20:52,374 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3210 transitions. Word has length 98 [2021-12-14 15:20:52,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:52,374 INFO L470 AbstractCegarLoop]: Abstraction has 2181 states and 3210 transitions. [2021-12-14 15:20:52,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:52,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3210 transitions. [2021-12-14 15:20:52,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-14 15:20:52,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:52,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:52,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 15:20:52,376 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:52,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:52,376 INFO L85 PathProgramCache]: Analyzing trace with hash -2092778770, now seen corresponding path program 1 times [2021-12-14 15:20:52,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:52,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122835087] [2021-12-14 15:20:52,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:52,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:52,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:52,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122835087] [2021-12-14 15:20:52,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122835087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:52,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:52,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:20:52,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985834529] [2021-12-14 15:20:52,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:52,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:20:52,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:52,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:20:52,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:20:52,440 INFO L87 Difference]: Start difference. First operand 2181 states and 3210 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:52,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:52,706 INFO L93 Difference]: Finished difference Result 4295 states and 6352 transitions. [2021-12-14 15:20:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:20:52,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-12-14 15:20:52,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:52,711 INFO L225 Difference]: With dead ends: 4295 [2021-12-14 15:20:52,711 INFO L226 Difference]: Without dead ends: 2181 [2021-12-14 15:20:52,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:20:52,717 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 565 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:52,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 171 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:20:52,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2021-12-14 15:20:52,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2181. [2021-12-14 15:20:52,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.4582568807339449) internal successors, (3179), 2180 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:52,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3179 transitions. [2021-12-14 15:20:52,904 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3179 transitions. Word has length 99 [2021-12-14 15:20:52,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:52,905 INFO L470 AbstractCegarLoop]: Abstraction has 2181 states and 3179 transitions. [2021-12-14 15:20:52,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:52,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3179 transitions. [2021-12-14 15:20:52,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-14 15:20:52,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:52,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:52,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 15:20:52,910 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:52,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:52,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1190401161, now seen corresponding path program 1 times [2021-12-14 15:20:52,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:52,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526183157] [2021-12-14 15:20:52,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:52,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:53,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:53,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526183157] [2021-12-14 15:20:53,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526183157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:53,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:53,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:20:53,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086922530] [2021-12-14 15:20:53,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:53,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:20:53,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:53,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:20:53,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:20:53,032 INFO L87 Difference]: Start difference. First operand 2181 states and 3179 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:53,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:53,402 INFO L93 Difference]: Finished difference Result 3577 states and 5229 transitions. [2021-12-14 15:20:53,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:20:53,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-12-14 15:20:53,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:53,409 INFO L225 Difference]: With dead ends: 3577 [2021-12-14 15:20:53,409 INFO L226 Difference]: Without dead ends: 3575 [2021-12-14 15:20:53,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:20:53,410 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 196 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:53,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 913 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:20:53,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2021-12-14 15:20:53,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 2195. [2021-12-14 15:20:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 2194 states have (on average 1.451686417502279) internal successors, (3185), 2194 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3185 transitions. [2021-12-14 15:20:53,643 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3185 transitions. Word has length 100 [2021-12-14 15:20:53,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:53,644 INFO L470 AbstractCegarLoop]: Abstraction has 2195 states and 3185 transitions. [2021-12-14 15:20:53,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:53,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3185 transitions. [2021-12-14 15:20:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-14 15:20:53,645 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:53,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:53,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 15:20:53,646 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:53,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:53,647 INFO L85 PathProgramCache]: Analyzing trace with hash 97282675, now seen corresponding path program 1 times [2021-12-14 15:20:53,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:53,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414298575] [2021-12-14 15:20:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:53,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:53,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:53,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414298575] [2021-12-14 15:20:53,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414298575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:53,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:53,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:20:53,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737126499] [2021-12-14 15:20:53,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:53,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 15:20:53,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:53,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 15:20:53,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:20:53,880 INFO L87 Difference]: Start difference. First operand 2195 states and 3185 transitions. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:54,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:54,986 INFO L93 Difference]: Finished difference Result 6332 states and 9203 transitions. [2021-12-14 15:20:54,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:20:54,987 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-12-14 15:20:54,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:54,995 INFO L225 Difference]: With dead ends: 6332 [2021-12-14 15:20:54,996 INFO L226 Difference]: Without dead ends: 4306 [2021-12-14 15:20:55,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-12-14 15:20:55,001 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 1255 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:55,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1255 Valid, 598 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:20:55,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2021-12-14 15:20:55,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 2195. [2021-12-14 15:20:55,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 2194 states have (on average 1.4489516864175023) internal successors, (3179), 2194 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3179 transitions. [2021-12-14 15:20:55,255 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3179 transitions. Word has length 100 [2021-12-14 15:20:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:55,255 INFO L470 AbstractCegarLoop]: Abstraction has 2195 states and 3179 transitions. [2021-12-14 15:20:55,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3179 transitions. [2021-12-14 15:20:55,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-14 15:20:55,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:55,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:55,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 15:20:55,257 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:55,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:55,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1807427751, now seen corresponding path program 1 times [2021-12-14 15:20:55,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:55,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529477024] [2021-12-14 15:20:55,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:55,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:55,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:55,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529477024] [2021-12-14 15:20:55,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529477024] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:55,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:55,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:20:55,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194545483] [2021-12-14 15:20:55,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:55,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 15:20:55,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:55,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 15:20:55,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:20:55,481 INFO L87 Difference]: Start difference. First operand 2195 states and 3179 transitions. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:56,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:56,340 INFO L93 Difference]: Finished difference Result 6407 states and 9307 transitions. [2021-12-14 15:20:56,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:20:56,341 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-12-14 15:20:56,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:56,348 INFO L225 Difference]: With dead ends: 6407 [2021-12-14 15:20:56,348 INFO L226 Difference]: Without dead ends: 4336 [2021-12-14 15:20:56,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-12-14 15:20:56,352 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 1670 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1670 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:56,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1670 Valid, 524 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:20:56,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2021-12-14 15:20:56,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 2195. [2021-12-14 15:20:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 2194 states have (on average 1.4471285323609846) internal successors, (3175), 2194 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:56,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3175 transitions. [2021-12-14 15:20:56,594 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3175 transitions. Word has length 101 [2021-12-14 15:20:56,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:56,594 INFO L470 AbstractCegarLoop]: Abstraction has 2195 states and 3175 transitions. [2021-12-14 15:20:56,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:56,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3175 transitions. [2021-12-14 15:20:56,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-14 15:20:56,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:56,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:56,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 15:20:56,596 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:56,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:56,597 INFO L85 PathProgramCache]: Analyzing trace with hash -721716891, now seen corresponding path program 1 times [2021-12-14 15:20:56,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:56,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197248806] [2021-12-14 15:20:56,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:56,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:56,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:56,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197248806] [2021-12-14 15:20:56,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197248806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:56,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:56,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:20:56,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185847280] [2021-12-14 15:20:56,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:56,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 15:20:56,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:56,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 15:20:56,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:20:56,803 INFO L87 Difference]: Start difference. First operand 2195 states and 3175 transitions. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:57,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:57,814 INFO L93 Difference]: Finished difference Result 6422 states and 9323 transitions. [2021-12-14 15:20:57,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:20:57,814 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-12-14 15:20:57,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:57,822 INFO L225 Difference]: With dead ends: 6422 [2021-12-14 15:20:57,822 INFO L226 Difference]: Without dead ends: 4341 [2021-12-14 15:20:57,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-12-14 15:20:57,825 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 1345 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:57,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1345 Valid, 522 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:20:57,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4341 states. [2021-12-14 15:20:58,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4341 to 2195. [2021-12-14 15:20:58,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 2194 states have (on average 1.4462169553327255) internal successors, (3173), 2194 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:58,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3173 transitions. [2021-12-14 15:20:58,078 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3173 transitions. Word has length 101 [2021-12-14 15:20:58,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:58,078 INFO L470 AbstractCegarLoop]: Abstraction has 2195 states and 3173 transitions. [2021-12-14 15:20:58,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:58,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3173 transitions. [2021-12-14 15:20:58,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-14 15:20:58,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:58,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:58,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 15:20:58,079 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:58,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:58,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1570910188, now seen corresponding path program 1 times [2021-12-14 15:20:58,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:58,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742128371] [2021-12-14 15:20:58,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:58,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:58,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:58,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742128371] [2021-12-14 15:20:58,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742128371] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:58,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:58,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:20:58,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610825678] [2021-12-14 15:20:58,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:58,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:20:58,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:58,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:20:58,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:20:58,229 INFO L87 Difference]: Start difference. First operand 2195 states and 3173 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:59,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:20:59,025 INFO L93 Difference]: Finished difference Result 6277 states and 9131 transitions. [2021-12-14 15:20:59,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:20:59,026 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-12-14 15:20:59,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:20:59,034 INFO L225 Difference]: With dead ends: 6277 [2021-12-14 15:20:59,034 INFO L226 Difference]: Without dead ends: 4191 [2021-12-14 15:20:59,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:20:59,038 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 1643 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:20:59,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1643 Valid, 389 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:20:59,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2021-12-14 15:20:59,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 2195. [2021-12-14 15:20:59,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 2194 states have (on average 1.4457611668185961) internal successors, (3172), 2194 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3172 transitions. [2021-12-14 15:20:59,381 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3172 transitions. Word has length 102 [2021-12-14 15:20:59,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:20:59,381 INFO L470 AbstractCegarLoop]: Abstraction has 2195 states and 3172 transitions. [2021-12-14 15:20:59,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:20:59,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3172 transitions. [2021-12-14 15:20:59,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-14 15:20:59,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:20:59,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:20:59,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 15:20:59,383 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:20:59,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:20:59,383 INFO L85 PathProgramCache]: Analyzing trace with hash 755224923, now seen corresponding path program 1 times [2021-12-14 15:20:59,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:20:59,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752348453] [2021-12-14 15:20:59,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:20:59,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:20:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:20:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:20:59,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:20:59,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752348453] [2021-12-14 15:20:59,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752348453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:20:59,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:20:59,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:20:59,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280868591] [2021-12-14 15:20:59,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:20:59,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 15:20:59,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:20:59,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 15:20:59,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:20:59,636 INFO L87 Difference]: Start difference. First operand 2195 states and 3172 transitions. Second operand has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:21:07,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:21:07,591 INFO L93 Difference]: Finished difference Result 46937 states and 68046 transitions. [2021-12-14 15:21:07,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-14 15:21:07,592 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-12-14 15:21:07,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:21:07,668 INFO L225 Difference]: With dead ends: 46937 [2021-12-14 15:21:07,668 INFO L226 Difference]: Without dead ends: 44886 [2021-12-14 15:21:07,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=627, Invalid=2025, Unknown=0, NotChecked=0, Total=2652 [2021-12-14 15:21:07,686 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 4935 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4935 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:21:07,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4935 Valid, 1738 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:21:07,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44886 states. [2021-12-14 15:21:08,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44886 to 2207. [2021-12-14 15:21:08,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 2206 states have (on average 1.442883046237534) internal successors, (3183), 2206 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:21:08,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3183 transitions. [2021-12-14 15:21:08,453 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3183 transitions. Word has length 103 [2021-12-14 15:21:08,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:21:08,454 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 3183 transitions. [2021-12-14 15:21:08,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:21:08,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3183 transitions. [2021-12-14 15:21:08,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-14 15:21:08,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:21:08,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:21:08,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-14 15:21:08,455 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:21:08,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:21:08,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1394810664, now seen corresponding path program 1 times [2021-12-14 15:21:08,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:21:08,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528698254] [2021-12-14 15:21:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:21:08,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:21:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:21:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:21:08,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:21:08,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528698254] [2021-12-14 15:21:08,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528698254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:21:08,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:21:08,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 15:21:08,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151295002] [2021-12-14 15:21:08,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:21:08,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 15:21:08,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:21:08,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 15:21:08,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-14 15:21:08,597 INFO L87 Difference]: Start difference. First operand 2207 states and 3183 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:21:09,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:21:09,816 INFO L93 Difference]: Finished difference Result 6289 states and 9113 transitions. [2021-12-14 15:21:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:21:09,818 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-12-14 15:21:09,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:21:09,825 INFO L225 Difference]: With dead ends: 6289 [2021-12-14 15:21:09,825 INFO L226 Difference]: Without dead ends: 4293 [2021-12-14 15:21:09,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-12-14 15:21:09,830 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 939 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:21:09,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 642 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:21:09,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4293 states. [2021-12-14 15:21:10,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4293 to 2207. [2021-12-14 15:21:10,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 2206 states have (on average 1.4397098821396193) internal successors, (3176), 2206 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:21:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3176 transitions. [2021-12-14 15:21:10,446 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3176 transitions. Word has length 104 [2021-12-14 15:21:10,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:21:10,446 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 3176 transitions. [2021-12-14 15:21:10,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:21:10,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3176 transitions. [2021-12-14 15:21:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-14 15:21:10,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:21:10,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:21:10,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-14 15:21:10,448 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:21:10,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:21:10,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1475383422, now seen corresponding path program 1 times [2021-12-14 15:21:10,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:21:10,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357273856] [2021-12-14 15:21:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:21:10,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:21:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:21:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:21:10,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:21:10,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357273856] [2021-12-14 15:21:10,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357273856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:21:10,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:21:10,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-14 15:21:10,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883030604] [2021-12-14 15:21:10,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:21:10,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-14 15:21:10,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:21:10,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 15:21:10,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-14 15:21:10,820 INFO L87 Difference]: Start difference. First operand 2207 states and 3176 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:21:15,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:21:15,747 INFO L93 Difference]: Finished difference Result 16899 states and 24606 transitions. [2021-12-14 15:21:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-14 15:21:15,748 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-12-14 15:21:15,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:21:15,766 INFO L225 Difference]: With dead ends: 16899 [2021-12-14 15:21:15,767 INFO L226 Difference]: Without dead ends: 16345 [2021-12-14 15:21:15,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2021-12-14 15:21:15,772 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 1993 mSDsluCounter, 4053 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 4654 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:21:15,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1993 Valid, 4654 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:21:15,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16345 states. [2021-12-14 15:21:16,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16345 to 2196. [2021-12-14 15:21:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2195 states have (on average 1.4378132118451026) internal successors, (3156), 2195 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:21:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 3156 transitions. [2021-12-14 15:21:16,431 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 3156 transitions. Word has length 105 [2021-12-14 15:21:16,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:21:16,431 INFO L470 AbstractCegarLoop]: Abstraction has 2196 states and 3156 transitions. [2021-12-14 15:21:16,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:21:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 3156 transitions. [2021-12-14 15:21:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-14 15:21:16,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:21:16,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:21:16,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-14 15:21:16,433 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:21:16,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:21:16,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2129597379, now seen corresponding path program 1 times [2021-12-14 15:21:16,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:21:16,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453079806] [2021-12-14 15:21:16,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:21:16,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:21:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:21:16,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:21:16,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:21:16,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453079806] [2021-12-14 15:21:16,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453079806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:21:16,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:21:16,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-14 15:21:16,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734497317] [2021-12-14 15:21:16,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:21:16,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-14 15:21:16,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:21:16,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 15:21:16,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-14 15:21:16,782 INFO L87 Difference]: Start difference. First operand 2196 states and 3156 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:21:21,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:21:21,201 INFO L93 Difference]: Finished difference Result 12887 states and 18736 transitions. [2021-12-14 15:21:21,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-14 15:21:21,202 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-12-14 15:21:21,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:21:21,216 INFO L225 Difference]: With dead ends: 12887 [2021-12-14 15:21:21,216 INFO L226 Difference]: Without dead ends: 12307 [2021-12-14 15:21:21,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2021-12-14 15:21:21,220 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 1550 mSDsluCounter, 4068 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 4627 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:21:21,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 4627 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:21:21,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12307 states. [2021-12-14 15:21:21,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12307 to 2164. [2021-12-14 15:21:21,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2164 states, 2163 states have (on average 1.4382801664355063) internal successors, (3111), 2163 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:21:21,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 3111 transitions. [2021-12-14 15:21:21,837 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 3111 transitions. Word has length 105 [2021-12-14 15:21:21,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:21:21,837 INFO L470 AbstractCegarLoop]: Abstraction has 2164 states and 3111 transitions. [2021-12-14 15:21:21,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:21:21,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 3111 transitions. [2021-12-14 15:21:21,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-14 15:21:21,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:21:21,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:21:21,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-14 15:21:21,839 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:21:21,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:21:21,839 INFO L85 PathProgramCache]: Analyzing trace with hash -285463969, now seen corresponding path program 1 times [2021-12-14 15:21:21,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:21:21,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807810031] [2021-12-14 15:21:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:21:21,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:21:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:21:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:21:22,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:21:22,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807810031] [2021-12-14 15:21:22,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807810031] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:21:22,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:21:22,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-14 15:21:22,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110172420] [2021-12-14 15:21:22,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:21:22,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 15:21:22,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:21:22,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 15:21:22,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:21:22,196 INFO L87 Difference]: Start difference. First operand 2164 states and 3111 transitions. Second operand has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:21:25,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:21:25,828 INFO L93 Difference]: Finished difference Result 8697 states and 12642 transitions. [2021-12-14 15:21:25,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:21:25,829 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-12-14 15:21:25,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:21:25,836 INFO L225 Difference]: With dead ends: 8697 [2021-12-14 15:21:25,836 INFO L226 Difference]: Without dead ends: 8163 [2021-12-14 15:21:25,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-12-14 15:21:25,838 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 1658 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:21:25,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1658 Valid, 1993 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:21:25,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8163 states. [2021-12-14 15:21:26,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8163 to 2163. [2021-12-14 15:21:26,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.4361702127659575) internal successors, (3105), 2162 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) [2021-12-14 15:21:26,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 3105 transitions. [2021-12-14 15:21:26,459 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 3105 transitions. Word has length 105 [2021-12-14 15:21:26,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:21:26,460 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 3105 transitions. [2021-12-14 15:21:26,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:21:26,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 3105 transitions. [2021-12-14 15:21:26,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-14 15:21:26,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:21:26,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:21:26,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-14 15:21:26,460 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:21:26,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:21:26,461 INFO L85 PathProgramCache]: Analyzing trace with hash -344221858, now seen corresponding path program 1 times [2021-12-14 15:21:26,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:21:26,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656114921] [2021-12-14 15:21:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:21:26,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:21:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:21:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:21:28,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:21:28,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656114921] [2021-12-14 15:21:28,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656114921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:21:28,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:21:28,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2021-12-14 15:21:28,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022597474] [2021-12-14 15:21:28,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:21:28,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-14 15:21:28,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:21:28,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-14 15:21:28,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1389, Unknown=0, NotChecked=0, Total=1482 [2021-12-14 15:21:28,146 INFO L87 Difference]: Start difference. First operand 2163 states and 3105 transitions. Second operand has 39 states, 39 states have (on average 2.6923076923076925) internal successors, (105), 39 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)