./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 169d16a82e2efb21b41720aab8fadcf5ecf67324651e69e91d6cb4f921e3dcd4 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:28:41,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:28:41,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:28:41,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:28:41,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:28:41,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:28:41,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:28:42,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:28:42,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:28:42,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:28:42,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:28:42,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:28:42,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:28:42,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:28:42,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:28:42,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:28:42,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:28:42,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:28:42,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:28:42,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:28:42,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:28:42,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:28:42,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:28:42,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:28:42,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:28:42,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:28:42,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:28:42,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:28:42,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:28:42,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:28:42,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:28:42,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:28:42,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:28:42,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:28:42,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:28:42,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:28:42,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:28:42,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:28:42,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:28:42,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:28:42,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:28:42,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:28:42,073 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:28:42,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:28:42,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:28:42,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:28:42,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:28:42,078 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:28:42,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:28:42,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:28:42,078 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:28:42,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:28:42,079 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:28:42,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:28:42,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:28:42,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:28:42,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:28:42,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:28:42,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:28:42,080 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:28:42,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:28:42,081 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:28:42,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:28:42,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:28:42,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:28:42,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:28:42,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:28:42,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:28:42,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:28:42,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:28:42,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:28:42,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:28:42,082 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:28:42,082 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:28:42,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:28:42,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:28:42,083 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 169d16a82e2efb21b41720aab8fadcf5ecf67324651e69e91d6cb4f921e3dcd4 [2021-12-16 01:28:42,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:28:42,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:28:42,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:28:42,304 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:28:42,304 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:28:42,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-12-16 01:28:42,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7acc24de2/d38e4a5c7ef94523a2073569ceca771c/FLAG31cde8df6 [2021-12-16 01:28:42,732 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:28:42,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-12-16 01:28:42,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7acc24de2/d38e4a5c7ef94523a2073569ceca771c/FLAG31cde8df6 [2021-12-16 01:28:43,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7acc24de2/d38e4a5c7ef94523a2073569ceca771c [2021-12-16 01:28:43,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:28:43,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:28:43,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:28:43,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:28:43,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:28:43,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:28:43" (1/1) ... [2021-12-16 01:28:43,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7654a22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:28:43, skipping insertion in model container [2021-12-16 01:28:43,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:28:43" (1/1) ... [2021-12-16 01:28:43,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:28:43,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:28:43,431 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.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[13215,13228] [2021-12-16 01:28:43,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:28:43,514 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:28:43,587 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.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[13215,13228] [2021-12-16 01:28:43,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:28:43,634 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:28:43,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:28:43 WrapperNode [2021-12-16 01:28:43,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:28:43,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:28:43,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:28:43,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:28:43,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:28:43" (1/1) ... [2021-12-16 01:28:43,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:28:43" (1/1) ... [2021-12-16 01:28:43,705 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1333 [2021-12-16 01:28:43,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:28:43,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:28:43,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:28:43,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:28:43,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:28:43" (1/1) ... [2021-12-16 01:28:43,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:28:43" (1/1) ... [2021-12-16 01:28:43,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:28:43" (1/1) ... [2021-12-16 01:28:43,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:28:43" (1/1) ... [2021-12-16 01:28:43,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:28:43" (1/1) ... [2021-12-16 01:28:43,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:28:43" (1/1) ... [2021-12-16 01:28:43,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:28:43" (1/1) ... [2021-12-16 01:28:43,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:28:43,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:28:43,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:28:43,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:28:43,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:28:43" (1/1) ... [2021-12-16 01:28:43,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:28:43,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:28:43,826 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) [2021-12-16 01:28:43,844 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 [2021-12-16 01:28:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:28:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:28:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:28:43,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:28:43,967 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:28:43,969 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:28:44,725 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:28:44,732 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:28:44,732 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 01:28:44,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:28:44 BoogieIcfgContainer [2021-12-16 01:28:44,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:28:44,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:28:44,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:28:44,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:28:44,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:28:43" (1/3) ... [2021-12-16 01:28:44,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f24e985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:28:44, skipping insertion in model container [2021-12-16 01:28:44,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:28:43" (2/3) ... [2021-12-16 01:28:44,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f24e985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:28:44, skipping insertion in model container [2021-12-16 01:28:44,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:28:44" (3/3) ... [2021-12-16 01:28:44,761 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-12-16 01:28:44,765 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:28:44,765 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 01:28:44,797 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:28:44,805 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 [2021-12-16 01:28:44,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 01:28:44,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 406 states, 404 states have (on average 1.6485148514851484) internal successors, (666), 405 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:44,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-16 01:28:44,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:28:44,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:28:44,844 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:28:44,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:28:44,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1653668950, now seen corresponding path program 1 times [2021-12-16 01:28:44,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:28:44,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872920929] [2021-12-16 01:28:44,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:28:44,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:28:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:28:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:28:45,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:28:45,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872920929] [2021-12-16 01:28:45,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872920929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:28:45,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:28:45,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:28:45,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966125792] [2021-12-16 01:28:45,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:28:45,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:28:45,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:28:45,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:28:45,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:28:45,169 INFO L87 Difference]: Start difference. First operand has 406 states, 404 states have (on average 1.6485148514851484) internal successors, (666), 405 states have internal predecessors, (666), 0 states have call successors, (0), 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 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:45,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:28:45,306 INFO L93 Difference]: Finished difference Result 784 states and 1270 transitions. [2021-12-16 01:28:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:28:45,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-16 01:28:45,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:28:45,319 INFO L225 Difference]: With dead ends: 784 [2021-12-16 01:28:45,321 INFO L226 Difference]: Without dead ends: 403 [2021-12-16 01:28:45,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:28:45,330 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 155 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:28:45,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 1791 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:28:45,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-12-16 01:28:45,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-12-16 01:28:45,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.5497512437810945) internal successors, (623), 402 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 623 transitions. [2021-12-16 01:28:45,390 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 623 transitions. Word has length 103 [2021-12-16 01:28:45,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:28:45,390 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 623 transitions. [2021-12-16 01:28:45,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:45,391 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 623 transitions. [2021-12-16 01:28:45,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:28:45,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:28:45,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:28:45,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:28:45,400 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:28:45,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:28:45,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1984435279, now seen corresponding path program 1 times [2021-12-16 01:28:45,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:28:45,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236938709] [2021-12-16 01:28:45,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:28:45,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:28:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:28:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:28:45,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:28:45,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236938709] [2021-12-16 01:28:45,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236938709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:28:45,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:28:45,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:28:45,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072158832] [2021-12-16 01:28:45,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:28:45,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:28:45,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:28:45,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:28:45,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:28:45,498 INFO L87 Difference]: Start difference. First operand 403 states and 623 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:45,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:28:45,533 INFO L93 Difference]: Finished difference Result 952 states and 1499 transitions. [2021-12-16 01:28:45,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:28:45,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-12-16 01:28:45,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:28:45,536 INFO L225 Difference]: With dead ends: 952 [2021-12-16 01:28:45,537 INFO L226 Difference]: Without dead ends: 611 [2021-12-16 01:28:45,537 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 [2021-12-16 01:28:45,538 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 419 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:28:45,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 1096 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:28:45,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-12-16 01:28:45,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 609. [2021-12-16 01:28:45,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 608 states have (on average 1.5608552631578947) internal successors, (949), 608 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 949 transitions. [2021-12-16 01:28:45,556 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 949 transitions. Word has length 134 [2021-12-16 01:28:45,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:28:45,556 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 949 transitions. [2021-12-16 01:28:45,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:45,557 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 949 transitions. [2021-12-16 01:28:45,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-16 01:28:45,558 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:28:45,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:28:45,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:28:45,558 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:28:45,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:28:45,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1203481045, now seen corresponding path program 1 times [2021-12-16 01:28:45,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:28:45,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428139868] [2021-12-16 01:28:45,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:28:45,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:28:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:28:45,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:28:45,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:28:45,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428139868] [2021-12-16 01:28:45,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428139868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:28:45,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:28:45,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:28:45,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405247499] [2021-12-16 01:28:45,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:28:45,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:28:45,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:28:45,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:28:45,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:28:45,618 INFO L87 Difference]: Start difference. First operand 609 states and 949 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:45,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:28:45,654 INFO L93 Difference]: Finished difference Result 1494 states and 2358 transitions. [2021-12-16 01:28:45,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:28:45,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2021-12-16 01:28:45,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:28:45,671 INFO L225 Difference]: With dead ends: 1494 [2021-12-16 01:28:45,671 INFO L226 Difference]: Without dead ends: 960 [2021-12-16 01:28:45,672 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 [2021-12-16 01:28:45,673 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 403 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:28:45,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 1181 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:28:45,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-12-16 01:28:45,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 958. [2021-12-16 01:28:45,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 1.5663531870428422) internal successors, (1499), 957 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1499 transitions. [2021-12-16 01:28:45,699 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1499 transitions. Word has length 136 [2021-12-16 01:28:45,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:28:45,699 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 1499 transitions. [2021-12-16 01:28:45,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:45,700 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1499 transitions. [2021-12-16 01:28:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-16 01:28:45,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:28:45,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:28:45,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:28:45,702 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:28:45,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:28:45,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1755736889, now seen corresponding path program 1 times [2021-12-16 01:28:45,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:28:45,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870616783] [2021-12-16 01:28:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:28:45,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:28:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:28:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:28:45,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:28:45,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870616783] [2021-12-16 01:28:45,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870616783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:28:45,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:28:45,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:28:45,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902152067] [2021-12-16 01:28:45,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:28:45,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:28:45,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:28:45,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:28:45,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:28:45,767 INFO L87 Difference]: Start difference. First operand 958 states and 1499 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:28:45,812 INFO L93 Difference]: Finished difference Result 2397 states and 3779 transitions. [2021-12-16 01:28:45,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:28:45,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2021-12-16 01:28:45,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:28:45,817 INFO L225 Difference]: With dead ends: 2397 [2021-12-16 01:28:45,817 INFO L226 Difference]: Without dead ends: 1527 [2021-12-16 01:28:45,819 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 [2021-12-16 01:28:45,819 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 389 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:28:45,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 1026 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:28:45,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2021-12-16 01:28:45,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1525. [2021-12-16 01:28:45,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 1.56496062992126) internal successors, (2385), 1524 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:45,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2385 transitions. [2021-12-16 01:28:45,862 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2385 transitions. Word has length 138 [2021-12-16 01:28:45,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:28:45,863 INFO L470 AbstractCegarLoop]: Abstraction has 1525 states and 2385 transitions. [2021-12-16 01:28:45,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:45,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2385 transitions. [2021-12-16 01:28:45,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-16 01:28:45,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:28:45,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:28:45,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:28:45,866 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:28:45,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:28:45,867 INFO L85 PathProgramCache]: Analyzing trace with hash -175339215, now seen corresponding path program 1 times [2021-12-16 01:28:45,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:28:45,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241439900] [2021-12-16 01:28:45,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:28:45,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:28:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:28:45,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:28:45,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:28:45,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241439900] [2021-12-16 01:28:45,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241439900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:28:45,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:28:45,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:28:45,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018983085] [2021-12-16 01:28:45,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:28:45,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:28:45,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:28:45,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:28:45,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:28:45,957 INFO L87 Difference]: Start difference. First operand 1525 states and 2385 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:46,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:28:46,033 INFO L93 Difference]: Finished difference Result 3818 states and 5988 transitions. [2021-12-16 01:28:46,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:28:46,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2021-12-16 01:28:46,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:28:46,042 INFO L225 Difference]: With dead ends: 3818 [2021-12-16 01:28:46,042 INFO L226 Difference]: Without dead ends: 2394 [2021-12-16 01:28:46,044 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 [2021-12-16 01:28:46,047 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 374 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:28:46,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 991 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:28:46,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2394 states. [2021-12-16 01:28:46,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2394 to 2392. [2021-12-16 01:28:46,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2392 states, 2391 states have (on average 1.5554161438728566) internal successors, (3719), 2391 states have internal predecessors, (3719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:46,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 3719 transitions. [2021-12-16 01:28:46,120 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 3719 transitions. Word has length 140 [2021-12-16 01:28:46,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:28:46,123 INFO L470 AbstractCegarLoop]: Abstraction has 2392 states and 3719 transitions. [2021-12-16 01:28:46,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:46,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 3719 transitions. [2021-12-16 01:28:46,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-16 01:28:46,129 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:28:46,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:28:46,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:28:46,131 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:28:46,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:28:46,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1755218565, now seen corresponding path program 1 times [2021-12-16 01:28:46,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:28:46,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842760426] [2021-12-16 01:28:46,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:28:46,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:28:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:28:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:28:46,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:28:46,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842760426] [2021-12-16 01:28:46,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842760426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:28:46,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:28:46,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:28:46,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727161396] [2021-12-16 01:28:46,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:28:46,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:28:46,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:28:46,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:28:46,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:28:46,234 INFO L87 Difference]: Start difference. First operand 2392 states and 3719 transitions. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:46,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:28:46,755 INFO L93 Difference]: Finished difference Result 14072 states and 21897 transitions. [2021-12-16 01:28:46,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:28:46,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2021-12-16 01:28:46,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:28:46,788 INFO L225 Difference]: With dead ends: 14072 [2021-12-16 01:28:46,788 INFO L226 Difference]: Without dead ends: 11785 [2021-12-16 01:28:46,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:28:46,798 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 4316 mSDsluCounter, 5388 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 5983 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:28:46,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4316 Valid, 5983 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:28:46,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11785 states. [2021-12-16 01:28:47,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11785 to 4734. [2021-12-16 01:28:47,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4734 states, 4733 states have (on average 1.5387703359391507) internal successors, (7283), 4733 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4734 states to 4734 states and 7283 transitions. [2021-12-16 01:28:47,179 INFO L78 Accepts]: Start accepts. Automaton has 4734 states and 7283 transitions. Word has length 142 [2021-12-16 01:28:47,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:28:47,180 INFO L470 AbstractCegarLoop]: Abstraction has 4734 states and 7283 transitions. [2021-12-16 01:28:47,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:47,180 INFO L276 IsEmpty]: Start isEmpty. Operand 4734 states and 7283 transitions. [2021-12-16 01:28:47,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 01:28:47,187 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:28:47,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:28:47,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 01:28:47,189 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:28:47,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:28:47,190 INFO L85 PathProgramCache]: Analyzing trace with hash -709986120, now seen corresponding path program 1 times [2021-12-16 01:28:47,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:28:47,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794856649] [2021-12-16 01:28:47,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:28:47,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:28:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:28:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:28:47,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:28:47,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794856649] [2021-12-16 01:28:47,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794856649] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:28:47,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:28:47,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:28:47,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666325375] [2021-12-16 01:28:47,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:28:47,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:28:47,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:28:47,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:28:47,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:28:47,228 INFO L87 Difference]: Start difference. First operand 4734 states and 7283 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:47,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:28:47,509 INFO L93 Difference]: Finished difference Result 13106 states and 20134 transitions. [2021-12-16 01:28:47,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:28:47,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2021-12-16 01:28:47,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:28:47,548 INFO L225 Difference]: With dead ends: 13106 [2021-12-16 01:28:47,548 INFO L226 Difference]: Without dead ends: 8416 [2021-12-16 01:28:47,554 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 [2021-12-16 01:28:47,555 INFO L933 BasicCegarLoop]: 950 mSDtfsCounter, 413 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:28:47,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 1443 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:28:47,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8416 states. [2021-12-16 01:28:47,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 8414. [2021-12-16 01:28:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8414 states, 8413 states have (on average 1.5253773921312255) internal successors, (12833), 8413 states have internal predecessors, (12833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:47,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8414 states to 8414 states and 12833 transitions. [2021-12-16 01:28:47,842 INFO L78 Accepts]: Start accepts. Automaton has 8414 states and 12833 transitions. Word has length 145 [2021-12-16 01:28:47,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:28:47,842 INFO L470 AbstractCegarLoop]: Abstraction has 8414 states and 12833 transitions. [2021-12-16 01:28:47,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:47,843 INFO L276 IsEmpty]: Start isEmpty. Operand 8414 states and 12833 transitions. [2021-12-16 01:28:47,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:28:47,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:28:47,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:28:47,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:28:47,857 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:28:47,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:28:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash -380882047, now seen corresponding path program 1 times [2021-12-16 01:28:47,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:28:47,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472535137] [2021-12-16 01:28:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:28:47,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:28:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:28:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:28:47,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:28:47,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472535137] [2021-12-16 01:28:47,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472535137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:28:47,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:28:47,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:28:47,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927732361] [2021-12-16 01:28:47,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:28:47,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:28:47,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:28:47,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:28:47,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:28:47,892 INFO L87 Difference]: Start difference. First operand 8414 states and 12833 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:28:48,371 INFO L93 Difference]: Finished difference Result 24239 states and 36920 transitions. [2021-12-16 01:28:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:28:48,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2021-12-16 01:28:48,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:28:48,405 INFO L225 Difference]: With dead ends: 24239 [2021-12-16 01:28:48,405 INFO L226 Difference]: Without dead ends: 15971 [2021-12-16 01:28:48,419 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 [2021-12-16 01:28:48,420 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 449 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:28:48,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 1087 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:28:48,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15971 states. [2021-12-16 01:28:49,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15971 to 15969. [2021-12-16 01:28:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15969 states, 15968 states have (on average 1.5127129258517034) internal successors, (24155), 15968 states have internal predecessors, (24155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:49,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15969 states to 15969 states and 24155 transitions. [2021-12-16 01:28:49,086 INFO L78 Accepts]: Start accepts. Automaton has 15969 states and 24155 transitions. Word has length 146 [2021-12-16 01:28:49,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:28:49,087 INFO L470 AbstractCegarLoop]: Abstraction has 15969 states and 24155 transitions. [2021-12-16 01:28:49,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 15969 states and 24155 transitions. [2021-12-16 01:28:49,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:28:49,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:28:49,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:28:49,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:28:49,118 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:28:49,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:28:49,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1424530646, now seen corresponding path program 1 times [2021-12-16 01:28:49,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:28:49,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311391878] [2021-12-16 01:28:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:28:49,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:28:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:28:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:28:49,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:28:49,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311391878] [2021-12-16 01:28:49,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311391878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:28:49,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:28:49,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:28:49,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891825352] [2021-12-16 01:28:49,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:28:49,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:28:49,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:28:49,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:28:49,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:28:49,154 INFO L87 Difference]: Start difference. First operand 15969 states and 24155 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:50,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:28:50,021 INFO L93 Difference]: Finished difference Result 45751 states and 69018 transitions. [2021-12-16 01:28:50,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:28:50,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2021-12-16 01:28:50,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:28:50,082 INFO L225 Difference]: With dead ends: 45751 [2021-12-16 01:28:50,083 INFO L226 Difference]: Without dead ends: 30164 [2021-12-16 01:28:50,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:28:50,109 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 431 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:28:50,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 1087 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:28:50,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30164 states. [2021-12-16 01:28:51,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30164 to 30162. [2021-12-16 01:28:51,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30162 states, 30161 states have (on average 1.497132057955638) internal successors, (45155), 30161 states have internal predecessors, (45155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:51,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30162 states to 30162 states and 45155 transitions. [2021-12-16 01:28:51,269 INFO L78 Accepts]: Start accepts. Automaton has 30162 states and 45155 transitions. Word has length 146 [2021-12-16 01:28:51,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:28:51,269 INFO L470 AbstractCegarLoop]: Abstraction has 30162 states and 45155 transitions. [2021-12-16 01:28:51,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:51,270 INFO L276 IsEmpty]: Start isEmpty. Operand 30162 states and 45155 transitions. [2021-12-16 01:28:51,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:28:51,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:28:51,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:28:51,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:28:51,355 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:28:51,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:28:51,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1146158271, now seen corresponding path program 1 times [2021-12-16 01:28:51,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:28:51,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228485464] [2021-12-16 01:28:51,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:28:51,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:28:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:28:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:28:51,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:28:51,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228485464] [2021-12-16 01:28:51,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228485464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:28:51,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:28:51,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:28:51,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228194452] [2021-12-16 01:28:51,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:28:51,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:28:51,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:28:51,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:28:51,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:28:51,395 INFO L87 Difference]: Start difference. First operand 30162 states and 45155 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:28:53,218 INFO L93 Difference]: Finished difference Result 85361 states and 127210 transitions. [2021-12-16 01:28:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:28:53,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2021-12-16 01:28:53,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:28:53,319 INFO L225 Difference]: With dead ends: 85361 [2021-12-16 01:28:53,319 INFO L226 Difference]: Without dead ends: 56499 [2021-12-16 01:28:53,358 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 [2021-12-16 01:28:53,359 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 413 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:28:53,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 1087 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:28:53,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56499 states. [2021-12-16 01:28:55,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56499 to 56497. [2021-12-16 01:28:55,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56497 states, 56496 states have (on average 1.4774320305862363) internal successors, (83469), 56496 states have internal predecessors, (83469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56497 states to 56497 states and 83469 transitions. [2021-12-16 01:28:55,264 INFO L78 Accepts]: Start accepts. Automaton has 56497 states and 83469 transitions. Word has length 146 [2021-12-16 01:28:55,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:28:55,264 INFO L470 AbstractCegarLoop]: Abstraction has 56497 states and 83469 transitions. [2021-12-16 01:28:55,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:55,265 INFO L276 IsEmpty]: Start isEmpty. Operand 56497 states and 83469 transitions. [2021-12-16 01:28:55,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:28:55,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:28:55,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:28:55,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:28:55,349 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:28:55,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:28:55,349 INFO L85 PathProgramCache]: Analyzing trace with hash -405922622, now seen corresponding path program 1 times [2021-12-16 01:28:55,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:28:55,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088000269] [2021-12-16 01:28:55,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:28:55,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:28:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:28:55,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:28:55,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:28:55,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088000269] [2021-12-16 01:28:55,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088000269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:28:55,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:28:55,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:28:55,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36183743] [2021-12-16 01:28:55,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:28:55,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:28:55,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:28:55,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:28:55,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:28:55,392 INFO L87 Difference]: Start difference. First operand 56497 states and 83469 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:28:58,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:28:58,805 INFO L93 Difference]: Finished difference Result 155711 states and 228154 transitions. [2021-12-16 01:28:58,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:28:58,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2021-12-16 01:28:58,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:28:59,051 INFO L225 Difference]: With dead ends: 155711 [2021-12-16 01:28:59,052 INFO L226 Difference]: Without dead ends: 104254 [2021-12-16 01:28:59,110 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 [2021-12-16 01:28:59,111 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 395 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:28:59,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 1087 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:28:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104254 states. [2021-12-16 01:29:03,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104254 to 104252. [2021-12-16 01:29:03,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104252 states, 104251 states have (on average 1.4505280524887052) internal successors, (151219), 104251 states have internal predecessors, (151219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:29:03,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104252 states to 104252 states and 151219 transitions. [2021-12-16 01:29:03,393 INFO L78 Accepts]: Start accepts. Automaton has 104252 states and 151219 transitions. Word has length 146 [2021-12-16 01:29:03,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:29:03,394 INFO L470 AbstractCegarLoop]: Abstraction has 104252 states and 151219 transitions. [2021-12-16 01:29:03,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:29:03,395 INFO L276 IsEmpty]: Start isEmpty. Operand 104252 states and 151219 transitions. [2021-12-16 01:29:03,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:29:03,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:29:03,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:29:03,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:29:03,562 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:29:03,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:29:03,563 INFO L85 PathProgramCache]: Analyzing trace with hash 541145625, now seen corresponding path program 1 times [2021-12-16 01:29:03,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:29:03,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136592078] [2021-12-16 01:29:03,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:29:03,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:29:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:29:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:29:03,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:29:03,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136592078] [2021-12-16 01:29:03,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136592078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:29:03,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:29:03,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:29:03,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379261472] [2021-12-16 01:29:03,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:29:03,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:29:03,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:29:03,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:29:03,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:29:03,693 INFO L87 Difference]: Start difference. First operand 104252 states and 151219 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:29:08,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:29:08,718 INFO L93 Difference]: Finished difference Result 178977 states and 256727 transitions. [2021-12-16 01:29:08,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:29:08,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2021-12-16 01:29:08,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:29:08,949 INFO L225 Difference]: With dead ends: 178977 [2021-12-16 01:29:08,949 INFO L226 Difference]: Without dead ends: 114413 [2021-12-16 01:29:09,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:29:09,026 INFO L933 BasicCegarLoop]: 1203 mSDtfsCounter, 2581 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:29:09,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2581 Valid, 3104 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:29:09,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114413 states. [2021-12-16 01:29:14,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114413 to 110118. [2021-12-16 01:29:14,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110118 states, 110117 states have (on average 1.4261921410862992) internal successors, (157048), 110117 states have internal predecessors, (157048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:29:14,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110118 states to 110118 states and 157048 transitions. [2021-12-16 01:29:14,385 INFO L78 Accepts]: Start accepts. Automaton has 110118 states and 157048 transitions. Word has length 146 [2021-12-16 01:29:14,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:29:14,394 INFO L470 AbstractCegarLoop]: Abstraction has 110118 states and 157048 transitions. [2021-12-16 01:29:14,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:29:14,395 INFO L276 IsEmpty]: Start isEmpty. Operand 110118 states and 157048 transitions. [2021-12-16 01:29:14,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-16 01:29:14,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:29:14,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:29:14,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 01:29:14,579 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:29:14,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:29:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash 373279712, now seen corresponding path program 1 times [2021-12-16 01:29:14,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:29:14,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325207986] [2021-12-16 01:29:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:29:14,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:29:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:29:14,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:29:14,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:29:14,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325207986] [2021-12-16 01:29:14,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325207986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:29:14,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:29:14,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:29:14,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155395387] [2021-12-16 01:29:14,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:29:14,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:29:14,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:29:14,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:29:14,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:29:14,694 INFO L87 Difference]: Start difference. First operand 110118 states and 157048 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)