./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.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 54dd2c42579f0de559de8ea2b74ae8f2f84f80b7530dd7d24e9994fd7ce14291 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:24:02,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:24:02,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:24:03,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:24:03,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:24:03,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:24:03,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:24:03,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:24:03,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:24:03,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:24:03,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:24:03,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:24:03,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:24:03,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:24:03,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:24:03,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:24:03,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:24:03,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:24:03,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:24:03,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:24:03,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:24:03,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:24:03,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:24:03,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:24:03,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:24:03,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:24:03,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:24:03,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:24:03,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:24:03,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:24:03,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:24:03,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:24:03,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:24:03,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:24:03,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:24:03,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:24:03,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:24:03,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:24:03,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:24:03,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:24:03,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:24:03,073 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:24:03,101 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:24:03,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:24:03,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:24:03,102 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:24:03,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:24:03,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:24:03,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:24:03,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:24:03,104 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:24:03,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:24:03,105 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:24:03,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:24:03,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:24:03,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:24:03,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:24:03,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:24:03,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:24:03,106 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:24:03,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:24:03,106 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:24:03,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:24:03,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:24:03,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:24:03,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:24:03,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:24:03,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:24:03,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:24:03,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:24:03,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:24:03,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:24:03,107 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:24:03,108 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:24:03,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:24:03,108 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54dd2c42579f0de559de8ea2b74ae8f2f84f80b7530dd7d24e9994fd7ce14291 [2021-12-28 01:24:03,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:24:03,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:24:03,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:24:03,360 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:24:03,361 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:24:03,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2021-12-28 01:24:03,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32de13e04/158fa40fdb1d4b078b1bdf2dfa7628a8/FLAG05c8e7b85 [2021-12-28 01:24:03,818 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:24:03,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2021-12-28 01:24:03,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32de13e04/158fa40fdb1d4b078b1bdf2dfa7628a8/FLAG05c8e7b85 [2021-12-28 01:24:03,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32de13e04/158fa40fdb1d4b078b1bdf2dfa7628a8 [2021-12-28 01:24:03,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:24:03,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:24:03,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:24:03,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:24:03,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:24:03,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:24:03" (1/1) ... [2021-12-28 01:24:03,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f8399d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:24:03, skipping insertion in model container [2021-12-28 01:24:03,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:24:03" (1/1) ... [2021-12-28 01:24:03,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:24:03,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:24:04,097 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7253,7266] [2021-12-28 01:24:04,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:24:04,154 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:24:04,200 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7253,7266] [2021-12-28 01:24:04,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:24:04,254 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:24:04,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:24:04 WrapperNode [2021-12-28 01:24:04,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:24:04,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:24:04,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:24:04,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:24:04,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:24:04" (1/1) ... [2021-12-28 01:24:04,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:24:04" (1/1) ... [2021-12-28 01:24:04,303 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 675 [2021-12-28 01:24:04,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:24:04,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:24:04,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:24:04,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:24:04,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:24:04" (1/1) ... [2021-12-28 01:24:04,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:24:04" (1/1) ... [2021-12-28 01:24:04,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:24:04" (1/1) ... [2021-12-28 01:24:04,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:24:04" (1/1) ... [2021-12-28 01:24:04,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:24:04" (1/1) ... [2021-12-28 01:24:04,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:24:04" (1/1) ... [2021-12-28 01:24:04,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:24:04" (1/1) ... [2021-12-28 01:24:04,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:24:04,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:24:04,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:24:04,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:24:04,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:24:04" (1/1) ... [2021-12-28 01:24:04,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:24:04,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:24:04,398 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) [2021-12-28 01:24:04,418 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 [2021-12-28 01:24:04,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:24:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:24:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:24:04,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:24:04,538 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:24:04,539 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:24:04,949 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:24:04,954 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:24:04,955 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 01:24:04,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:24:04 BoogieIcfgContainer [2021-12-28 01:24:04,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:24:04,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:24:04,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:24:04,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:24:04,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:24:03" (1/3) ... [2021-12-28 01:24:04,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a63238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:24:04, skipping insertion in model container [2021-12-28 01:24:04,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:24:04" (2/3) ... [2021-12-28 01:24:04,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a63238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:24:04, skipping insertion in model container [2021-12-28 01:24:04,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:24:04" (3/3) ... [2021-12-28 01:24:04,961 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2021-12-28 01:24:04,964 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:24:04,965 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 01:24:04,994 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:24:04,998 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 [2021-12-28 01:24:04,998 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 01:24:05,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 178 states have (on average 1.7191011235955056) internal successors, (306), 179 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:05,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-28 01:24:05,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:05,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:24:05,022 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:05,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:05,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1338980314, now seen corresponding path program 1 times [2021-12-28 01:24:05,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:05,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889218485] [2021-12-28 01:24:05,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:05,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:05,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:05,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889218485] [2021-12-28 01:24:05,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889218485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:05,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:05,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:24:05,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554580807] [2021-12-28 01:24:05,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:05,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 01:24:05,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 01:24:05,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:24:05,354 INFO L87 Difference]: Start difference. First operand has 180 states, 178 states have (on average 1.7191011235955056) internal successors, (306), 179 states have internal predecessors, (306), 0 states have call successors, (0), 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 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:05,575 INFO L93 Difference]: Finished difference Result 640 states and 1036 transitions. [2021-12-28 01:24:05,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 01:24:05,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-28 01:24:05,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:05,593 INFO L225 Difference]: With dead ends: 640 [2021-12-28 01:24:05,595 INFO L226 Difference]: Without dead ends: 541 [2021-12-28 01:24:05,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-28 01:24:05,601 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 1605 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:24:05,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1605 Valid, 1129 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:24:05,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-12-28 01:24:05,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 275. [2021-12-28 01:24:05,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.5036496350364963) internal successors, (412), 274 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:05,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 412 transitions. [2021-12-28 01:24:05,686 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 412 transitions. Word has length 65 [2021-12-28 01:24:05,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:05,687 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 412 transitions. [2021-12-28 01:24:05,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:05,687 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 412 transitions. [2021-12-28 01:24:05,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-28 01:24:05,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:05,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:24:05,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:24:05,691 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:05,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:05,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1162317624, now seen corresponding path program 1 times [2021-12-28 01:24:05,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:05,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625963753] [2021-12-28 01:24:05,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:05,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:05,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:05,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625963753] [2021-12-28 01:24:05,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625963753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:05,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:05,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:24:05,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103714069] [2021-12-28 01:24:05,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:05,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 01:24:05,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:05,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 01:24:05,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:24:05,875 INFO L87 Difference]: Start difference. First operand 275 states and 412 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:06,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:06,068 INFO L93 Difference]: Finished difference Result 1013 states and 1556 transitions. [2021-12-28 01:24:06,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 01:24:06,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-28 01:24:06,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:06,072 INFO L225 Difference]: With dead ends: 1013 [2021-12-28 01:24:06,072 INFO L226 Difference]: Without dead ends: 801 [2021-12-28 01:24:06,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:24:06,075 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 778 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:24:06,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 895 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:24:06,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-12-28 01:24:06,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 795. [2021-12-28 01:24:06,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 1.5251889168765742) internal successors, (1211), 794 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:06,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1211 transitions. [2021-12-28 01:24:06,181 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1211 transitions. Word has length 66 [2021-12-28 01:24:06,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:06,181 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 1211 transitions. [2021-12-28 01:24:06,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:06,182 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1211 transitions. [2021-12-28 01:24:06,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-28 01:24:06,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:06,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:24:06,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:24:06,184 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:06,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:06,185 INFO L85 PathProgramCache]: Analyzing trace with hash -314049844, now seen corresponding path program 1 times [2021-12-28 01:24:06,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:06,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813112004] [2021-12-28 01:24:06,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:06,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:06,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:06,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:06,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813112004] [2021-12-28 01:24:06,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813112004] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:06,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:06,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:24:06,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733974050] [2021-12-28 01:24:06,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:06,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:24:06,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:06,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:24:06,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:24:06,239 INFO L87 Difference]: Start difference. First operand 795 states and 1211 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:06,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:06,504 INFO L93 Difference]: Finished difference Result 2127 states and 3281 transitions. [2021-12-28 01:24:06,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:24:06,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-28 01:24:06,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:06,509 INFO L225 Difference]: With dead ends: 2127 [2021-12-28 01:24:06,509 INFO L226 Difference]: Without dead ends: 1383 [2021-12-28 01:24:06,510 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 [2021-12-28 01:24:06,511 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 994 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:24:06,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [994 Valid, 244 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:24:06,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2021-12-28 01:24:06,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1381. [2021-12-28 01:24:06,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 1.5333333333333334) internal successors, (2116), 1380 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 2116 transitions. [2021-12-28 01:24:06,601 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 2116 transitions. Word has length 67 [2021-12-28 01:24:06,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:06,601 INFO L470 AbstractCegarLoop]: Abstraction has 1381 states and 2116 transitions. [2021-12-28 01:24:06,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:06,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 2116 transitions. [2021-12-28 01:24:06,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-28 01:24:06,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:06,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:24:06,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:24:06,618 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:06,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:06,619 INFO L85 PathProgramCache]: Analyzing trace with hash -301249106, now seen corresponding path program 1 times [2021-12-28 01:24:06,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:06,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044927457] [2021-12-28 01:24:06,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:06,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:06,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:06,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:06,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044927457] [2021-12-28 01:24:06,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044927457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:06,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:06,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:24:06,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68999245] [2021-12-28 01:24:06,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:06,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:24:06,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:06,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:24:06,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:24:06,668 INFO L87 Difference]: Start difference. First operand 1381 states and 2116 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:06,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:06,961 INFO L93 Difference]: Finished difference Result 3713 states and 5742 transitions. [2021-12-28 01:24:06,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:24:06,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-28 01:24:06,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:06,969 INFO L225 Difference]: With dead ends: 3713 [2021-12-28 01:24:06,969 INFO L226 Difference]: Without dead ends: 2433 [2021-12-28 01:24:06,971 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 [2021-12-28 01:24:06,971 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 920 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:24:06,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [920 Valid, 250 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:24:06,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2021-12-28 01:24:07,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 2431. [2021-12-28 01:24:07,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2430 states have (on average 1.536625514403292) internal successors, (3734), 2430 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:07,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3734 transitions. [2021-12-28 01:24:07,163 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3734 transitions. Word has length 67 [2021-12-28 01:24:07,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:07,164 INFO L470 AbstractCegarLoop]: Abstraction has 2431 states and 3734 transitions. [2021-12-28 01:24:07,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:07,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3734 transitions. [2021-12-28 01:24:07,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-28 01:24:07,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:07,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:24:07,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:24:07,165 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:07,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:07,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1722644829, now seen corresponding path program 1 times [2021-12-28 01:24:07,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:07,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238362206] [2021-12-28 01:24:07,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:07,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:07,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:07,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238362206] [2021-12-28 01:24:07,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238362206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:07,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:07,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:24:07,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348107117] [2021-12-28 01:24:07,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:07,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:24:07,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:07,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:24:07,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:24:07,213 INFO L87 Difference]: Start difference. First operand 2431 states and 3734 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:07,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:07,653 INFO L93 Difference]: Finished difference Result 6934 states and 10705 transitions. [2021-12-28 01:24:07,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:24:07,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-28 01:24:07,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:07,667 INFO L225 Difference]: With dead ends: 6934 [2021-12-28 01:24:07,667 INFO L226 Difference]: Without dead ends: 4577 [2021-12-28 01:24:07,671 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 [2021-12-28 01:24:07,673 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 946 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:24:07,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 248 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:24:07,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4577 states. [2021-12-28 01:24:07,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4577 to 4575. [2021-12-28 01:24:07,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4575 states, 4574 states have (on average 1.5343244425010931) internal successors, (7018), 4574 states have internal predecessors, (7018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 7018 transitions. [2021-12-28 01:24:08,006 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 7018 transitions. Word has length 67 [2021-12-28 01:24:08,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:08,007 INFO L470 AbstractCegarLoop]: Abstraction has 4575 states and 7018 transitions. [2021-12-28 01:24:08,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:08,007 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 7018 transitions. [2021-12-28 01:24:08,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-28 01:24:08,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:08,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:24:08,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:24:08,009 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:08,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:08,010 INFO L85 PathProgramCache]: Analyzing trace with hash -262843909, now seen corresponding path program 1 times [2021-12-28 01:24:08,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:08,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315240154] [2021-12-28 01:24:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:08,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:08,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:08,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315240154] [2021-12-28 01:24:08,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315240154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:08,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:08,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:24:08,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018132115] [2021-12-28 01:24:08,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:08,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:24:08,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:08,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:24:08,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:24:08,049 INFO L87 Difference]: Start difference. First operand 4575 states and 7018 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:08,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:08,721 INFO L93 Difference]: Finished difference Result 13473 states and 20725 transitions. [2021-12-28 01:24:08,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:24:08,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-28 01:24:08,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:08,745 INFO L225 Difference]: With dead ends: 13473 [2021-12-28 01:24:08,745 INFO L226 Difference]: Without dead ends: 8933 [2021-12-28 01:24:08,750 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 [2021-12-28 01:24:08,750 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 1002 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:24:08,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1002 Valid, 242 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:24:08,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8933 states. [2021-12-28 01:24:09,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8933 to 8931. [2021-12-28 01:24:09,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8931 states, 8930 states have (on average 1.5264277715565508) internal successors, (13631), 8930 states have internal predecessors, (13631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8931 states to 8931 states and 13631 transitions. [2021-12-28 01:24:09,358 INFO L78 Accepts]: Start accepts. Automaton has 8931 states and 13631 transitions. Word has length 67 [2021-12-28 01:24:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:09,358 INFO L470 AbstractCegarLoop]: Abstraction has 8931 states and 13631 transitions. [2021-12-28 01:24:09,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:09,359 INFO L276 IsEmpty]: Start isEmpty. Operand 8931 states and 13631 transitions. [2021-12-28 01:24:09,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-28 01:24:09,360 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:09,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:24:09,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:24:09,361 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:09,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:09,362 INFO L85 PathProgramCache]: Analyzing trace with hash -767077788, now seen corresponding path program 1 times [2021-12-28 01:24:09,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:09,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852952549] [2021-12-28 01:24:09,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:09,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:09,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:09,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852952549] [2021-12-28 01:24:09,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852952549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:09,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:09,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:24:09,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069996243] [2021-12-28 01:24:09,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:09,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:24:09,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:09,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:24:09,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:24:09,425 INFO L87 Difference]: Start difference. First operand 8931 states and 13631 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:10,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:10,504 INFO L93 Difference]: Finished difference Result 17509 states and 26656 transitions. [2021-12-28 01:24:10,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 01:24:10,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-28 01:24:10,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:10,542 INFO L225 Difference]: With dead ends: 17509 [2021-12-28 01:24:10,542 INFO L226 Difference]: Without dead ends: 17507 [2021-12-28 01:24:10,547 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 [2021-12-28 01:24:10,547 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 244 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:24:10,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 983 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:24:10,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17507 states. [2021-12-28 01:24:11,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17507 to 9187. [2021-12-28 01:24:11,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9187 states, 9186 states have (on average 1.5117570215545395) internal successors, (13887), 9186 states have internal predecessors, (13887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:11,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9187 states to 9187 states and 13887 transitions. [2021-12-28 01:24:11,333 INFO L78 Accepts]: Start accepts. Automaton has 9187 states and 13887 transitions. Word has length 68 [2021-12-28 01:24:11,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:11,333 INFO L470 AbstractCegarLoop]: Abstraction has 9187 states and 13887 transitions. [2021-12-28 01:24:11,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:11,334 INFO L276 IsEmpty]: Start isEmpty. Operand 9187 states and 13887 transitions. [2021-12-28 01:24:11,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-28 01:24:11,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:11,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:24:11,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:24:11,336 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:11,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:11,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2026121149, now seen corresponding path program 1 times [2021-12-28 01:24:11,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:11,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195063900] [2021-12-28 01:24:11,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:11,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:11,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:11,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195063900] [2021-12-28 01:24:11,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195063900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:11,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:11,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 01:24:11,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874044888] [2021-12-28 01:24:11,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:11,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 01:24:11,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:11,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 01:24:11,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-28 01:24:11,467 INFO L87 Difference]: Start difference. First operand 9187 states and 13887 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:14,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:14,903 INFO L93 Difference]: Finished difference Result 41174 states and 61720 transitions. [2021-12-28 01:24:14,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-28 01:24:14,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-28 01:24:14,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:14,976 INFO L225 Difference]: With dead ends: 41174 [2021-12-28 01:24:14,976 INFO L226 Difference]: Without dead ends: 35360 [2021-12-28 01:24:14,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2021-12-28 01:24:14,993 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 1711 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:24:14,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1711 Valid, 1140 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 01:24:15,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35360 states. [2021-12-28 01:24:16,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35360 to 9320. [2021-12-28 01:24:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9320 states, 9319 states have (on average 1.5089601888614659) internal successors, (14062), 9319 states have internal predecessors, (14062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 14062 transitions. [2021-12-28 01:24:16,198 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 14062 transitions. Word has length 69 [2021-12-28 01:24:16,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:16,198 INFO L470 AbstractCegarLoop]: Abstraction has 9320 states and 14062 transitions. [2021-12-28 01:24:16,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:16,198 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 14062 transitions. [2021-12-28 01:24:16,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-28 01:24:16,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:16,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:24:16,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:24:16,201 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:16,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:16,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1463216125, now seen corresponding path program 1 times [2021-12-28 01:24:16,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:16,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109147977] [2021-12-28 01:24:16,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:16,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:16,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:16,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109147977] [2021-12-28 01:24:16,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109147977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:16,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:16,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 01:24:16,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575339218] [2021-12-28 01:24:16,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:16,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 01:24:16,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:16,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 01:24:16,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-28 01:24:16,317 INFO L87 Difference]: Start difference. First operand 9320 states and 14062 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:19,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:19,432 INFO L93 Difference]: Finished difference Result 24815 states and 37194 transitions. [2021-12-28 01:24:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 01:24:19,433 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-28 01:24:19,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:19,495 INFO L225 Difference]: With dead ends: 24815 [2021-12-28 01:24:19,495 INFO L226 Difference]: Without dead ends: 23508 [2021-12-28 01:24:19,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2021-12-28 01:24:19,506 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 2042 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:24:19,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2042 Valid, 1297 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 01:24:19,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23508 states. [2021-12-28 01:24:20,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23508 to 9320. [2021-12-28 01:24:20,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9320 states, 9319 states have (on average 1.5087455735593949) internal successors, (14060), 9319 states have internal predecessors, (14060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:20,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 14060 transitions. [2021-12-28 01:24:20,522 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 14060 transitions. Word has length 69 [2021-12-28 01:24:20,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:20,522 INFO L470 AbstractCegarLoop]: Abstraction has 9320 states and 14060 transitions. [2021-12-28 01:24:20,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:20,523 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 14060 transitions. [2021-12-28 01:24:20,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-28 01:24:20,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:20,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:24:20,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:24:20,526 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:20,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:20,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1395774499, now seen corresponding path program 1 times [2021-12-28 01:24:20,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:20,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870168681] [2021-12-28 01:24:20,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:20,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:20,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:20,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:20,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870168681] [2021-12-28 01:24:20,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870168681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:20,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:20,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 01:24:20,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671776913] [2021-12-28 01:24:20,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:20,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 01:24:20,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:20,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 01:24:20,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-28 01:24:20,675 INFO L87 Difference]: Start difference. First operand 9320 states and 14060 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:24,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:24,642 INFO L93 Difference]: Finished difference Result 33278 states and 49851 transitions. [2021-12-28 01:24:24,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-28 01:24:24,643 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-28 01:24:24,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:24,713 INFO L225 Difference]: With dead ends: 33278 [2021-12-28 01:24:24,713 INFO L226 Difference]: Without dead ends: 29701 [2021-12-28 01:24:24,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2021-12-28 01:24:24,728 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 2196 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:24:24,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2196 Valid, 1251 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 01:24:24,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29701 states. [2021-12-28 01:24:26,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29701 to 9543. [2021-12-28 01:24:26,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9543 states, 9542 states have (on average 1.5048207922867323) internal successors, (14359), 9542 states have internal predecessors, (14359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:26,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9543 states to 9543 states and 14359 transitions. [2021-12-28 01:24:26,102 INFO L78 Accepts]: Start accepts. Automaton has 9543 states and 14359 transitions. Word has length 69 [2021-12-28 01:24:26,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:26,102 INFO L470 AbstractCegarLoop]: Abstraction has 9543 states and 14359 transitions. [2021-12-28 01:24:26,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand 9543 states and 14359 transitions. [2021-12-28 01:24:26,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-28 01:24:26,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:26,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:24:26,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 01:24:26,106 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:26,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:26,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1390992285, now seen corresponding path program 1 times [2021-12-28 01:24:26,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:26,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582688297] [2021-12-28 01:24:26,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:26,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:26,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:26,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582688297] [2021-12-28 01:24:26,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582688297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:26,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:26,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:24:26,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321333689] [2021-12-28 01:24:26,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:26,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 01:24:26,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:26,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 01:24:26,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 01:24:26,155 INFO L87 Difference]: Start difference. First operand 9543 states and 14359 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:28,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:28,081 INFO L93 Difference]: Finished difference Result 25387 states and 38245 transitions. [2021-12-28 01:24:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 01:24:28,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-28 01:24:28,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:28,107 INFO L225 Difference]: With dead ends: 25387 [2021-12-28 01:24:28,107 INFO L226 Difference]: Without dead ends: 16809 [2021-12-28 01:24:28,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 01:24:28,121 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 248 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:24:28,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 610 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:24:28,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16809 states. [2021-12-28 01:24:30,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16809 to 16807. [2021-12-28 01:24:30,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16807 states, 16806 states have (on average 1.4934547185528977) internal successors, (25099), 16806 states have internal predecessors, (25099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16807 states to 16807 states and 25099 transitions. [2021-12-28 01:24:30,213 INFO L78 Accepts]: Start accepts. Automaton has 16807 states and 25099 transitions. Word has length 69 [2021-12-28 01:24:30,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:30,214 INFO L470 AbstractCegarLoop]: Abstraction has 16807 states and 25099 transitions. [2021-12-28 01:24:30,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:30,214 INFO L276 IsEmpty]: Start isEmpty. Operand 16807 states and 25099 transitions. [2021-12-28 01:24:30,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-28 01:24:30,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:30,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:24:30,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 01:24:30,217 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:30,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:30,217 INFO L85 PathProgramCache]: Analyzing trace with hash -304742627, now seen corresponding path program 1 times [2021-12-28 01:24:30,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:30,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986450480] [2021-12-28 01:24:30,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:30,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:30,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:30,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986450480] [2021-12-28 01:24:30,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986450480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:30,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:30,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:24:30,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064299560] [2021-12-28 01:24:30,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:30,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:24:30,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:30,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:24:30,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:24:30,247 INFO L87 Difference]: Start difference. First operand 16807 states and 25099 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:32,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:32,896 INFO L93 Difference]: Finished difference Result 29267 states and 43716 transitions. [2021-12-28 01:24:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:24:32,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-28 01:24:32,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:32,925 INFO L225 Difference]: With dead ends: 29267 [2021-12-28 01:24:32,925 INFO L226 Difference]: Without dead ends: 20237 [2021-12-28 01:24:32,939 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 [2021-12-28 01:24:32,940 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 155 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:24:32,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 480 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:24:32,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20237 states. [2021-12-28 01:24:35,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20237 to 20003. [2021-12-28 01:24:35,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20003 states, 20002 states have (on average 1.470952904709529) internal successors, (29422), 20002 states have internal predecessors, (29422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:35,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20003 states to 20003 states and 29422 transitions. [2021-12-28 01:24:35,604 INFO L78 Accepts]: Start accepts. Automaton has 20003 states and 29422 transitions. Word has length 70 [2021-12-28 01:24:35,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:35,604 INFO L470 AbstractCegarLoop]: Abstraction has 20003 states and 29422 transitions. [2021-12-28 01:24:35,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:35,605 INFO L276 IsEmpty]: Start isEmpty. Operand 20003 states and 29422 transitions. [2021-12-28 01:24:35,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-28 01:24:35,607 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:35,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:24:35,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 01:24:35,607 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:35,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:35,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1498705795, now seen corresponding path program 1 times [2021-12-28 01:24:35,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:35,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738860253] [2021-12-28 01:24:35,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:35,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:35,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:35,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:35,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738860253] [2021-12-28 01:24:35,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738860253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:35,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:35,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:24:35,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516096816] [2021-12-28 01:24:35,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:35,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:24:35,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:35,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:24:35,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:24:35,632 INFO L87 Difference]: Start difference. First operand 20003 states and 29422 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:40,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:40,182 INFO L93 Difference]: Finished difference Result 50572 states and 74466 transitions. [2021-12-28 01:24:40,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:24:40,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-28 01:24:40,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:40,237 INFO L225 Difference]: With dead ends: 50572 [2021-12-28 01:24:40,237 INFO L226 Difference]: Without dead ends: 33966 [2021-12-28 01:24:40,262 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 [2021-12-28 01:24:40,263 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 172 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:24:40,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 554 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:24:40,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33966 states. [2021-12-28 01:24:44,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33966 to 33900. [2021-12-28 01:24:44,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33900 states, 33899 states have (on average 1.4599250715360335) internal successors, (49490), 33899 states have internal predecessors, (49490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:44,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33900 states to 33900 states and 49490 transitions. [2021-12-28 01:24:44,942 INFO L78 Accepts]: Start accepts. Automaton has 33900 states and 49490 transitions. Word has length 70 [2021-12-28 01:24:44,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:44,942 INFO L470 AbstractCegarLoop]: Abstraction has 33900 states and 49490 transitions. [2021-12-28 01:24:44,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:44,943 INFO L276 IsEmpty]: Start isEmpty. Operand 33900 states and 49490 transitions. [2021-12-28 01:24:44,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-28 01:24:44,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:44,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:24:44,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 01:24:44,947 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:44,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:44,947 INFO L85 PathProgramCache]: Analyzing trace with hash 188326364, now seen corresponding path program 1 times [2021-12-28 01:24:44,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:44,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262829078] [2021-12-28 01:24:44,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:44,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:44,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:44,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:44,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262829078] [2021-12-28 01:24:44,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262829078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:44,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:44,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:24:44,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783948029] [2021-12-28 01:24:44,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:44,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:24:44,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:44,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:24:44,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:24:44,978 INFO L87 Difference]: Start difference. First operand 33900 states and 49490 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:50,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:24:50,256 INFO L93 Difference]: Finished difference Result 46865 states and 68097 transitions. [2021-12-28 01:24:50,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:24:50,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-28 01:24:50,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:24:50,312 INFO L225 Difference]: With dead ends: 46865 [2021-12-28 01:24:50,313 INFO L226 Difference]: Without dead ends: 34649 [2021-12-28 01:24:50,334 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 [2021-12-28 01:24:50,335 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 143 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:24:50,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 466 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:24:50,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34649 states. [2021-12-28 01:24:55,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34649 to 31139. [2021-12-28 01:24:55,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31139 states, 31138 states have (on average 1.4313700301881944) internal successors, (44570), 31138 states have internal predecessors, (44570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31139 states to 31139 states and 44570 transitions. [2021-12-28 01:24:55,377 INFO L78 Accepts]: Start accepts. Automaton has 31139 states and 44570 transitions. Word has length 70 [2021-12-28 01:24:55,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:24:55,378 INFO L470 AbstractCegarLoop]: Abstraction has 31139 states and 44570 transitions. [2021-12-28 01:24:55,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:24:55,378 INFO L276 IsEmpty]: Start isEmpty. Operand 31139 states and 44570 transitions. [2021-12-28 01:24:55,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-28 01:24:55,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:24:55,383 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] [2021-12-28 01:24:55,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 01:24:55,383 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:24:55,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:24:55,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1741290372, now seen corresponding path program 1 times [2021-12-28 01:24:55,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:24:55,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398282702] [2021-12-28 01:24:55,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:24:55,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:24:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:24:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:24:55,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:24:55,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398282702] [2021-12-28 01:24:55,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398282702] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:24:55,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:24:55,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:24:55,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331828695] [2021-12-28 01:24:55,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:24:55,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:24:55,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:24:55,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:24:55,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:24:55,423 INFO L87 Difference]: Start difference. First operand 31139 states and 44570 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:25:01,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:25:01,092 INFO L93 Difference]: Finished difference Result 61381 states and 87534 transitions. [2021-12-28 01:25:01,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:25:01,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-28 01:25:01,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:25:01,148 INFO L225 Difference]: With dead ends: 61381 [2021-12-28 01:25:01,148 INFO L226 Difference]: Without dead ends: 34249 [2021-12-28 01:25:01,174 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 [2021-12-28 01:25:01,174 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 163 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:25:01,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 488 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:25:01,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34249 states. [2021-12-28 01:25:06,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34249 to 33931. [2021-12-28 01:25:06,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33931 states, 33930 states have (on average 1.3930739758325965) internal successors, (47267), 33930 states have internal predecessors, (47267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:25:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33931 states to 33931 states and 47267 transitions. [2021-12-28 01:25:06,877 INFO L78 Accepts]: Start accepts. Automaton has 33931 states and 47267 transitions. Word has length 70 [2021-12-28 01:25:06,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:25:06,877 INFO L470 AbstractCegarLoop]: Abstraction has 33931 states and 47267 transitions. [2021-12-28 01:25:06,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:25:06,877 INFO L276 IsEmpty]: Start isEmpty. Operand 33931 states and 47267 transitions. [2021-12-28 01:25:06,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-28 01:25:06,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:25:06,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:25:06,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 01:25:06,882 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:25:06,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:25:06,882 INFO L85 PathProgramCache]: Analyzing trace with hash 740233245, now seen corresponding path program 1 times [2021-12-28 01:25:06,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:25:06,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941736473] [2021-12-28 01:25:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:25:06,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:25:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:25:06,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:25:06,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:25:06,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941736473] [2021-12-28 01:25:06,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941736473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:25:06,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:25:06,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:25:06,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142593782] [2021-12-28 01:25:06,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:25:06,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 01:25:06,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:25:06,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 01:25:06,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:25:06,935 INFO L87 Difference]: Start difference. First operand 33931 states and 47267 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)