./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem14_label09.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 1b3a5c95c10076386b15606d0ac6559403dceee57f74bca8a711eb692be2f98e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 22:45:20,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 22:45:20,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 22:45:20,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 22:45:20,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 22:45:20,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 22:45:20,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 22:45:20,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 22:45:20,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 22:45:20,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 22:45:20,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 22:45:20,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 22:45:20,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 22:45:20,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 22:45:20,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 22:45:20,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 22:45:20,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 22:45:20,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 22:45:20,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 22:45:20,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 22:45:20,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 22:45:20,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 22:45:20,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 22:45:20,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 22:45:20,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 22:45:20,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 22:45:20,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 22:45:20,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 22:45:20,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 22:45:20,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 22:45:20,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 22:45:20,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 22:45:20,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 22:45:20,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 22:45:20,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 22:45:20,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 22:45:20,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 22:45:20,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 22:45:20,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 22:45:20,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 22:45:20,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 22:45:20,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-27 22:45:21,002 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 22:45:21,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 22:45:21,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 22:45:21,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 22:45:21,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 22:45:21,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 22:45:21,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 22:45:21,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 22:45:21,004 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 22:45:21,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 22:45:21,004 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 22:45:21,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-27 22:45:21,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 22:45:21,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 22:45:21,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 22:45:21,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 22:45:21,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 22:45:21,005 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 22:45:21,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 22:45:21,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 22:45:21,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 22:45:21,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 22:45:21,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 22:45:21,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 22:45:21,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 22:45:21,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 22:45:21,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 22:45:21,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 22:45:21,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-27 22:45:21,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-27 22:45:21,013 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 22:45:21,013 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 22:45:21,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 22:45:21,014 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b3a5c95c10076386b15606d0ac6559403dceee57f74bca8a711eb692be2f98e [2021-12-27 22:45:21,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 22:45:21,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 22:45:21,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 22:45:21,314 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 22:45:21,315 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 22:45:21,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label09.c [2021-12-27 22:45:21,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdf63013c/959cf7a6ffa24635989caa9944c66ed2/FLAGc38bbb0c1 [2021-12-27 22:45:21,794 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 22:45:21,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label09.c [2021-12-27 22:45:21,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdf63013c/959cf7a6ffa24635989caa9944c66ed2/FLAGc38bbb0c1 [2021-12-27 22:45:22,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdf63013c/959cf7a6ffa24635989caa9944c66ed2 [2021-12-27 22:45:22,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 22:45:22,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 22:45:22,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 22:45:22,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 22:45:22,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 22:45:22,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 10:45:22" (1/1) ... [2021-12-27 22:45:22,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac108cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:45:22, skipping insertion in model container [2021-12-27 22:45:22,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 10:45:22" (1/1) ... [2021-12-27 22:45:22,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 22:45:22,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 22:45:22,307 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/eca-rers2012/Problem14_label09.c[4722,4735] [2021-12-27 22:45:22,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 22:45:22,467 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 22:45:22,479 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/eca-rers2012/Problem14_label09.c[4722,4735] [2021-12-27 22:45:22,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 22:45:22,556 INFO L208 MainTranslator]: Completed translation [2021-12-27 22:45:22,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:45:22 WrapperNode [2021-12-27 22:45:22,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 22:45:22,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 22:45:22,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 22:45:22,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 22:45:22,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:45:22" (1/1) ... [2021-12-27 22:45:22,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:45:22" (1/1) ... [2021-12-27 22:45:22,640 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2021-12-27 22:45:22,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 22:45:22,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 22:45:22,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 22:45:22,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 22:45:22,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:45:22" (1/1) ... [2021-12-27 22:45:22,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:45:22" (1/1) ... [2021-12-27 22:45:22,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:45:22" (1/1) ... [2021-12-27 22:45:22,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:45:22" (1/1) ... [2021-12-27 22:45:22,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:45:22" (1/1) ... [2021-12-27 22:45:22,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:45:22" (1/1) ... [2021-12-27 22:45:22,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:45:22" (1/1) ... [2021-12-27 22:45:22,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 22:45:22,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 22:45:22,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 22:45:22,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 22:45:22,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:45:22" (1/1) ... [2021-12-27 22:45:22,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 22:45:22,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 22:45:22,754 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) [2021-12-27 22:45:22,779 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 [2021-12-27 22:45:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 22:45:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-27 22:45:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 22:45:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 22:45:22,843 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 22:45:22,844 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 22:45:23,674 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 22:45:23,680 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 22:45:23,681 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-27 22:45:23,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 10:45:23 BoogieIcfgContainer [2021-12-27 22:45:23,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 22:45:23,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 22:45:23,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 22:45:23,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 22:45:23,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 10:45:22" (1/3) ... [2021-12-27 22:45:23,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1461e87a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 10:45:23, skipping insertion in model container [2021-12-27 22:45:23,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:45:22" (2/3) ... [2021-12-27 22:45:23,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1461e87a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 10:45:23, skipping insertion in model container [2021-12-27 22:45:23,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 10:45:23" (3/3) ... [2021-12-27 22:45:23,688 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label09.c [2021-12-27 22:45:23,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 22:45:23,692 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 22:45:23,721 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 22:45:23,725 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 [2021-12-27 22:45:23,725 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 22:45:23,739 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-27 22:45:23,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:23,744 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] [2021-12-27 22:45:23,744 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:23,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:23,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2068820151, now seen corresponding path program 1 times [2021-12-27 22:45:23,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:23,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702660954] [2021-12-27 22:45:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:23,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 22:45:24,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:24,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702660954] [2021-12-27 22:45:24,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702660954] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:24,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 22:45:24,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 22:45:24,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839998766] [2021-12-27 22:45:24,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:24,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-27 22:45:24,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:24,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-27 22:45:24,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-27 22:45:24,039 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 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 11.25) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:25,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:25,235 INFO L93 Difference]: Finished difference Result 850 states and 1558 transitions. [2021-12-27 22:45:25,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-27 22:45:25,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-12-27 22:45:25,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:25,248 INFO L225 Difference]: With dead ends: 850 [2021-12-27 22:45:25,248 INFO L226 Difference]: Without dead ends: 538 [2021-12-27 22:45:25,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-27 22:45:25,256 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 498 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:25,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 194 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-27 22:45:25,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-12-27 22:45:25,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2021-12-27 22:45:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.4487895716945995) internal successors, (778), 537 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:25,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 778 transitions. [2021-12-27 22:45:25,307 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 778 transitions. Word has length 45 [2021-12-27 22:45:25,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:25,308 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 778 transitions. [2021-12-27 22:45:25,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:25,308 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 778 transitions. [2021-12-27 22:45:25,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-27 22:45:25,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:25,312 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:25,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-27 22:45:25,312 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:25,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:25,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1796285180, now seen corresponding path program 1 times [2021-12-27 22:45:25,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:25,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568292446] [2021-12-27 22:45:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:25,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:25,442 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 22:45:25,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:25,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568292446] [2021-12-27 22:45:25,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568292446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:25,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 22:45:25,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 22:45:25,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530641609] [2021-12-27 22:45:25,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:25,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-27 22:45:25,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:25,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-27 22:45:25,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-27 22:45:25,446 INFO L87 Difference]: Start difference. First operand 538 states and 778 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:26,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:26,039 INFO L93 Difference]: Finished difference Result 1281 states and 1978 transitions. [2021-12-27 22:45:26,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-27 22:45:26,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-12-27 22:45:26,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:26,042 INFO L225 Difference]: With dead ends: 1281 [2021-12-27 22:45:26,042 INFO L226 Difference]: Without dead ends: 894 [2021-12-27 22:45:26,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-27 22:45:26,044 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 118 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:26,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 119 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-27 22:45:26,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2021-12-27 22:45:26,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 716. [2021-12-27 22:45:26,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.220979020979021) internal successors, (873), 715 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:26,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 873 transitions. [2021-12-27 22:45:26,079 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 873 transitions. Word has length 125 [2021-12-27 22:45:26,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:26,080 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 873 transitions. [2021-12-27 22:45:26,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 873 transitions. [2021-12-27 22:45:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-27 22:45:26,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:26,088 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:26,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-27 22:45:26,088 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:26,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2036921752, now seen corresponding path program 1 times [2021-12-27 22:45:26,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:26,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261134371] [2021-12-27 22:45:26,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:26,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:26,216 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 22:45:26,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:26,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261134371] [2021-12-27 22:45:26,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261134371] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 22:45:26,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460033936] [2021-12-27 22:45:26,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:26,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:45:26,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 22:45:26,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 22:45:26,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-27 22:45:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:26,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-27 22:45:26,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 22:45:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-27 22:45:26,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 22:45:26,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460033936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:26,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-27 22:45:26,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-12-27 22:45:26,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785707086] [2021-12-27 22:45:26,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:26,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:45:26,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:26,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:45:26,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-27 22:45:26,719 INFO L87 Difference]: Start difference. First operand 716 states and 873 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:27,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:27,137 INFO L93 Difference]: Finished difference Result 1608 states and 2071 transitions. [2021-12-27 22:45:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:45:27,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 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 216 [2021-12-27 22:45:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:27,141 INFO L225 Difference]: With dead ends: 1608 [2021-12-27 22:45:27,141 INFO L226 Difference]: Without dead ends: 1072 [2021-12-27 22:45:27,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-27 22:45:27,142 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 84 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:27,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 47 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-27 22:45:27,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-12-27 22:45:27,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2021-12-27 22:45:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.2156862745098038) internal successors, (1302), 1071 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:27,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1302 transitions. [2021-12-27 22:45:27,157 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1302 transitions. Word has length 216 [2021-12-27 22:45:27,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:27,158 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1302 transitions. [2021-12-27 22:45:27,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:27,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1302 transitions. [2021-12-27 22:45:27,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-12-27 22:45:27,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:27,161 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:27,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-27 22:45:27,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:45:27,377 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:27,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1670561777, now seen corresponding path program 1 times [2021-12-27 22:45:27,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:27,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856741008] [2021-12-27 22:45:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:27,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 22:45:27,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:27,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856741008] [2021-12-27 22:45:27,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856741008] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:27,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 22:45:27,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 22:45:27,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863554296] [2021-12-27 22:45:27,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:27,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:45:27,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:27,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:45:27,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 22:45:27,479 INFO L87 Difference]: Start difference. First operand 1072 states and 1302 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:27,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:27,887 INFO L93 Difference]: Finished difference Result 2498 states and 3070 transitions. [2021-12-27 22:45:27,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:45:27,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2021-12-27 22:45:27,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:27,892 INFO L225 Difference]: With dead ends: 2498 [2021-12-27 22:45:27,892 INFO L226 Difference]: Without dead ends: 1606 [2021-12-27 22:45:27,894 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 [2021-12-27 22:45:27,898 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 111 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:27,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 77 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-27 22:45:27,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-12-27 22:45:27,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2021-12-27 22:45:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.168847352024922) internal successors, (1876), 1605 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:27,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1876 transitions. [2021-12-27 22:45:27,923 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1876 transitions. Word has length 219 [2021-12-27 22:45:27,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:27,924 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 1876 transitions. [2021-12-27 22:45:27,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:27,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1876 transitions. [2021-12-27 22:45:27,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-12-27 22:45:27,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:27,927 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:27,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-27 22:45:27,928 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:27,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:27,928 INFO L85 PathProgramCache]: Analyzing trace with hash -841281577, now seen corresponding path program 1 times [2021-12-27 22:45:27,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:27,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967097057] [2021-12-27 22:45:27,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:27,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-12-27 22:45:28,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:28,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967097057] [2021-12-27 22:45:28,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967097057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:28,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 22:45:28,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 22:45:28,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236752306] [2021-12-27 22:45:28,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:28,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-27 22:45:28,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:28,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-27 22:45:28,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-27 22:45:28,087 INFO L87 Difference]: Start difference. First operand 1606 states and 1876 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:28,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:28,539 INFO L93 Difference]: Finished difference Result 3061 states and 3636 transitions. [2021-12-27 22:45:28,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-27 22:45:28,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 336 [2021-12-27 22:45:28,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:28,545 INFO L225 Difference]: With dead ends: 3061 [2021-12-27 22:45:28,547 INFO L226 Difference]: Without dead ends: 1784 [2021-12-27 22:45:28,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-27 22:45:28,551 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 142 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:28,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 17 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-27 22:45:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2021-12-27 22:45:28,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1606. [2021-12-27 22:45:28,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.1196261682242992) internal successors, (1797), 1605 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:28,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1797 transitions. [2021-12-27 22:45:28,594 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1797 transitions. Word has length 336 [2021-12-27 22:45:28,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:28,598 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 1797 transitions. [2021-12-27 22:45:28,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:28,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1797 transitions. [2021-12-27 22:45:28,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2021-12-27 22:45:28,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:28,602 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:28,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-27 22:45:28,603 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:28,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:28,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1590776259, now seen corresponding path program 1 times [2021-12-27 22:45:28,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:28,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269484043] [2021-12-27 22:45:28,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:28,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-27 22:45:28,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:28,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269484043] [2021-12-27 22:45:28,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269484043] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 22:45:28,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99808851] [2021-12-27 22:45:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:28,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:45:28,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 22:45:28,776 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 22:45:28,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-27 22:45:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:28,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-27 22:45:28,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 22:45:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-12-27 22:45:29,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 22:45:29,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99808851] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:29,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-27 22:45:29,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2021-12-27 22:45:29,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073864018] [2021-12-27 22:45:29,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:29,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:45:29,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:29,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:45:29,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-27 22:45:29,563 INFO L87 Difference]: Start difference. First operand 1606 states and 1797 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:29,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:29,875 INFO L93 Difference]: Finished difference Result 2320 states and 2566 transitions. [2021-12-27 22:45:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:45:29,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 425 [2021-12-27 22:45:29,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:29,881 INFO L225 Difference]: With dead ends: 2320 [2021-12-27 22:45:29,881 INFO L226 Difference]: Without dead ends: 2318 [2021-12-27 22:45:29,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-27 22:45:29,882 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:29,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 11 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-27 22:45:29,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-12-27 22:45:29,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1428. [2021-12-27 22:45:29,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 1.0939032936229853) internal successors, (1561), 1427 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:29,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1561 transitions. [2021-12-27 22:45:29,902 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1561 transitions. Word has length 425 [2021-12-27 22:45:29,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:29,902 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1561 transitions. [2021-12-27 22:45:29,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:29,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1561 transitions. [2021-12-27 22:45:29,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-12-27 22:45:29,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:29,906 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:29,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-27 22:45:30,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-27 22:45:30,120 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:30,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:30,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1026613071, now seen corresponding path program 1 times [2021-12-27 22:45:30,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:30,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36896283] [2021-12-27 22:45:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:30,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-12-27 22:45:30,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:30,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36896283] [2021-12-27 22:45:30,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36896283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:30,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 22:45:30,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 22:45:30,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860561038] [2021-12-27 22:45:30,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:30,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:45:30,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:30,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:45:30,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 22:45:30,242 INFO L87 Difference]: Start difference. First operand 1428 states and 1561 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:30,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:30,606 INFO L93 Difference]: Finished difference Result 3210 states and 3559 transitions. [2021-12-27 22:45:30,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:45:30,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 431 [2021-12-27 22:45:30,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:30,612 INFO L225 Difference]: With dead ends: 3210 [2021-12-27 22:45:30,612 INFO L226 Difference]: Without dead ends: 1962 [2021-12-27 22:45:30,613 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 [2021-12-27 22:45:30,614 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 110 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:30,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 245 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-27 22:45:30,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2021-12-27 22:45:30,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1606. [2021-12-27 22:45:30,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.0841121495327102) internal successors, (1740), 1605 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:30,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1740 transitions. [2021-12-27 22:45:30,635 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1740 transitions. Word has length 431 [2021-12-27 22:45:30,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:30,636 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 1740 transitions. [2021-12-27 22:45:30,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:30,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1740 transitions. [2021-12-27 22:45:30,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-12-27 22:45:30,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:30,639 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:30,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-27 22:45:30,639 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:30,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:30,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1829033834, now seen corresponding path program 1 times [2021-12-27 22:45:30,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:30,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134788775] [2021-12-27 22:45:30,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:30,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-12-27 22:45:30,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:30,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134788775] [2021-12-27 22:45:30,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134788775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:30,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 22:45:30,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 22:45:30,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122420434] [2021-12-27 22:45:30,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:30,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:45:30,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:30,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:45:30,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 22:45:30,745 INFO L87 Difference]: Start difference. First operand 1606 states and 1740 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:31,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:31,121 INFO L93 Difference]: Finished difference Result 3744 states and 4121 transitions. [2021-12-27 22:45:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:45:31,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 438 [2021-12-27 22:45:31,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:31,127 INFO L225 Difference]: With dead ends: 3744 [2021-12-27 22:45:31,127 INFO L226 Difference]: Without dead ends: 2318 [2021-12-27 22:45:31,129 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 [2021-12-27 22:45:31,129 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 113 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:31,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 202 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-27 22:45:31,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-12-27 22:45:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2318. [2021-12-27 22:45:31,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.0884764782045748) internal successors, (2522), 2317 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:31,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2522 transitions. [2021-12-27 22:45:31,158 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2522 transitions. Word has length 438 [2021-12-27 22:45:31,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:31,159 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 2522 transitions. [2021-12-27 22:45:31,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:31,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2522 transitions. [2021-12-27 22:45:31,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-12-27 22:45:31,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:31,163 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:31,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-27 22:45:31,164 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:31,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:31,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1313117521, now seen corresponding path program 1 times [2021-12-27 22:45:31,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:31,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498728484] [2021-12-27 22:45:31,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:31,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 491 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-12-27 22:45:31,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:31,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498728484] [2021-12-27 22:45:31,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498728484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:31,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 22:45:31,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 22:45:31,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748886265] [2021-12-27 22:45:31,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:31,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:45:31,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:31,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:45:31,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 22:45:31,274 INFO L87 Difference]: Start difference. First operand 2318 states and 2522 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:31,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:31,628 INFO L93 Difference]: Finished difference Result 5702 states and 6287 transitions. [2021-12-27 22:45:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:45:31,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 479 [2021-12-27 22:45:31,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:31,639 INFO L225 Difference]: With dead ends: 5702 [2021-12-27 22:45:31,640 INFO L226 Difference]: Without dead ends: 3564 [2021-12-27 22:45:31,642 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 [2021-12-27 22:45:31,644 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:31,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 52 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-27 22:45:31,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2021-12-27 22:45:31,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3208. [2021-12-27 22:45:31,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.0820081072653571) internal successors, (3470), 3207 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:31,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3470 transitions. [2021-12-27 22:45:31,712 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3470 transitions. Word has length 479 [2021-12-27 22:45:31,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:31,713 INFO L470 AbstractCegarLoop]: Abstraction has 3208 states and 3470 transitions. [2021-12-27 22:45:31,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:31,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3470 transitions. [2021-12-27 22:45:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2021-12-27 22:45:31,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:31,718 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:31,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-27 22:45:31,719 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:31,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:31,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2019878851, now seen corresponding path program 1 times [2021-12-27 22:45:31,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:31,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771371344] [2021-12-27 22:45:31,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:31,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 1084 proven. 104 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2021-12-27 22:45:31,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:31,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771371344] [2021-12-27 22:45:31,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771371344] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 22:45:31,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066016818] [2021-12-27 22:45:31,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:31,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:45:31,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 22:45:31,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 22:45:31,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-27 22:45:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:32,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-27 22:45:32,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 22:45:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 1288 trivial. 0 not checked. [2021-12-27 22:45:32,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 22:45:32,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066016818] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:32,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-27 22:45:32,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-12-27 22:45:32,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668948628] [2021-12-27 22:45:32,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:32,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:45:32,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:32,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:45:32,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-27 22:45:32,577 INFO L87 Difference]: Start difference. First operand 3208 states and 3470 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:32,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:32,921 INFO L93 Difference]: Finished difference Result 4100 states and 4429 transitions. [2021-12-27 22:45:32,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:45:32,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 624 [2021-12-27 22:45:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:32,930 INFO L225 Difference]: With dead ends: 4100 [2021-12-27 22:45:32,931 INFO L226 Difference]: Without dead ends: 4098 [2021-12-27 22:45:32,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-27 22:45:32,932 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 157 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:32,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 11 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-27 22:45:32,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2021-12-27 22:45:32,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 3208. [2021-12-27 22:45:32,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.0820081072653571) internal successors, (3470), 3207 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:32,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3470 transitions. [2021-12-27 22:45:32,969 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3470 transitions. Word has length 624 [2021-12-27 22:45:32,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:32,970 INFO L470 AbstractCegarLoop]: Abstraction has 3208 states and 3470 transitions. [2021-12-27 22:45:32,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3470 transitions. [2021-12-27 22:45:32,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2021-12-27 22:45:32,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:32,974 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:32,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-27 22:45:33,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:45:33,187 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:33,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:33,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1713531829, now seen corresponding path program 1 times [2021-12-27 22:45:33,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:33,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080552834] [2021-12-27 22:45:33,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:33,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 857 proven. 110 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-12-27 22:45:33,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:33,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080552834] [2021-12-27 22:45:33,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080552834] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 22:45:33,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539653210] [2021-12-27 22:45:33,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:33,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:45:33,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 22:45:33,336 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 22:45:33,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-27 22:45:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:33,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-27 22:45:33,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 22:45:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 857 proven. 110 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-12-27 22:45:34,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 22:45:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 857 proven. 110 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-12-27 22:45:34,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539653210] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 22:45:34,976 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 22:45:34,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-27 22:45:34,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517236033] [2021-12-27 22:45:34,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 22:45:34,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-27 22:45:34,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:34,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-27 22:45:34,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-27 22:45:34,978 INFO L87 Difference]: Start difference. First operand 3208 states and 3470 transitions. Second operand has 6 states, 6 states have (on average 115.33333333333333) internal successors, (692), 6 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:35,767 INFO L93 Difference]: Finished difference Result 7482 states and 8150 transitions. [2021-12-27 22:45:35,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-27 22:45:35,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 115.33333333333333) internal successors, (692), 6 states have internal predecessors, (692), 0 states have call successors, (0), 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 634 [2021-12-27 22:45:35,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:35,777 INFO L225 Difference]: With dead ends: 7482 [2021-12-27 22:45:35,778 INFO L226 Difference]: Without dead ends: 4454 [2021-12-27 22:45:35,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1270 GetRequests, 1266 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-27 22:45:35,781 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 217 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:35,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 62 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-27 22:45:35,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4454 states. [2021-12-27 22:45:35,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4454 to 3920. [2021-12-27 22:45:35,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3920 states, 3919 states have (on average 1.0811431487624394) internal successors, (4237), 3919 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 4237 transitions. [2021-12-27 22:45:35,862 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 4237 transitions. Word has length 634 [2021-12-27 22:45:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:35,863 INFO L470 AbstractCegarLoop]: Abstraction has 3920 states and 4237 transitions. [2021-12-27 22:45:35,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.33333333333333) internal successors, (692), 6 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 4237 transitions. [2021-12-27 22:45:35,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2021-12-27 22:45:35,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:35,868 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:35,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-27 22:45:36,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:45:36,083 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:36,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:36,084 INFO L85 PathProgramCache]: Analyzing trace with hash 223844596, now seen corresponding path program 1 times [2021-12-27 22:45:36,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:36,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060628264] [2021-12-27 22:45:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:36,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 1111 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2021-12-27 22:45:36,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:36,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060628264] [2021-12-27 22:45:36,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060628264] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:36,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 22:45:36,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 22:45:36,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986275383] [2021-12-27 22:45:36,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:36,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:45:36,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:36,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:45:36,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 22:45:36,258 INFO L87 Difference]: Start difference. First operand 3920 states and 4237 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:36,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:36,614 INFO L93 Difference]: Finished difference Result 7838 states and 8487 transitions. [2021-12-27 22:45:36,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:45:36,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 644 [2021-12-27 22:45:36,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:36,623 INFO L225 Difference]: With dead ends: 7838 [2021-12-27 22:45:36,623 INFO L226 Difference]: Without dead ends: 4098 [2021-12-27 22:45:36,627 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 [2021-12-27 22:45:36,627 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 50 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:36,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 243 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-27 22:45:36,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2021-12-27 22:45:36,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 3742. [2021-12-27 22:45:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3741 states have (on average 1.078321304464047) internal successors, (4034), 3741 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:36,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 4034 transitions. [2021-12-27 22:45:36,678 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 4034 transitions. Word has length 644 [2021-12-27 22:45:36,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:36,678 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 4034 transitions. [2021-12-27 22:45:36,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:36,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 4034 transitions. [2021-12-27 22:45:36,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2021-12-27 22:45:36,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:36,693 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:36,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-27 22:45:36,694 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:36,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:36,694 INFO L85 PathProgramCache]: Analyzing trace with hash -248319062, now seen corresponding path program 1 times [2021-12-27 22:45:36,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:36,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796317242] [2021-12-27 22:45:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:36,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2021-12-27 22:45:36,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:36,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796317242] [2021-12-27 22:45:36,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796317242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:36,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 22:45:36,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 22:45:36,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586379350] [2021-12-27 22:45:36,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:36,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:45:36,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:36,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:45:36,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 22:45:36,838 INFO L87 Difference]: Start difference. First operand 3742 states and 4034 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:37,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:37,194 INFO L93 Difference]: Finished difference Result 8906 states and 9668 transitions. [2021-12-27 22:45:37,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:45:37,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 706 [2021-12-27 22:45:37,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:37,202 INFO L225 Difference]: With dead ends: 8906 [2021-12-27 22:45:37,203 INFO L226 Difference]: Without dead ends: 5344 [2021-12-27 22:45:37,205 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 [2021-12-27 22:45:37,206 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 110 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:37,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 37 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-27 22:45:37,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2021-12-27 22:45:37,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 5166. [2021-12-27 22:45:37,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5166 states, 5165 states have (on average 1.078025169409487) internal successors, (5568), 5165 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:37,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 5568 transitions. [2021-12-27 22:45:37,259 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 5568 transitions. Word has length 706 [2021-12-27 22:45:37,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:37,259 INFO L470 AbstractCegarLoop]: Abstraction has 5166 states and 5568 transitions. [2021-12-27 22:45:37,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:37,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 5568 transitions. [2021-12-27 22:45:37,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2021-12-27 22:45:37,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:37,264 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:37,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-27 22:45:37,264 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:37,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:37,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1255761865, now seen corresponding path program 1 times [2021-12-27 22:45:37,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:37,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497419902] [2021-12-27 22:45:37,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:37,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 1118 proven. 93 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2021-12-27 22:45:37,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:37,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497419902] [2021-12-27 22:45:37,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497419902] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 22:45:37,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088463424] [2021-12-27 22:45:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:37,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:45:37,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 22:45:37,483 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 22:45:37,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-27 22:45:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:37,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-27 22:45:37,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 22:45:38,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 1211 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2021-12-27 22:45:38,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 22:45:38,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088463424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:38,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-27 22:45:38,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-27 22:45:38,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333044169] [2021-12-27 22:45:38,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:38,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:45:38,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:38,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:45:38,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-27 22:45:38,766 INFO L87 Difference]: Start difference. First operand 5166 states and 5568 transitions. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:39,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:39,106 INFO L93 Difference]: Finished difference Result 10508 states and 11329 transitions. [2021-12-27 22:45:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:45:39,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 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 724 [2021-12-27 22:45:39,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:39,113 INFO L225 Difference]: With dead ends: 10508 [2021-12-27 22:45:39,114 INFO L226 Difference]: Without dead ends: 5522 [2021-12-27 22:45:39,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-27 22:45:39,118 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:39,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 65 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-27 22:45:39,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5522 states. [2021-12-27 22:45:39,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5522 to 5344. [2021-12-27 22:45:39,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5343 states have (on average 1.0776717200074863) internal successors, (5758), 5343 states have internal predecessors, (5758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 5758 transitions. [2021-12-27 22:45:39,160 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 5758 transitions. Word has length 724 [2021-12-27 22:45:39,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:39,161 INFO L470 AbstractCegarLoop]: Abstraction has 5344 states and 5758 transitions. [2021-12-27 22:45:39,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 5758 transitions. [2021-12-27 22:45:39,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2021-12-27 22:45:39,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:39,165 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:39,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-27 22:45:39,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-27 22:45:39,375 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:39,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:39,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1244517444, now seen corresponding path program 1 times [2021-12-27 22:45:39,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:39,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108942562] [2021-12-27 22:45:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:39,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1716 backedges. 1036 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2021-12-27 22:45:39,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:39,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108942562] [2021-12-27 22:45:39,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108942562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:39,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 22:45:39,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 22:45:39,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869937451] [2021-12-27 22:45:39,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:39,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:45:39,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:39,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:45:39,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 22:45:39,558 INFO L87 Difference]: Start difference. First operand 5344 states and 5758 transitions. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:39,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:39,907 INFO L93 Difference]: Finished difference Result 10864 states and 11731 transitions. [2021-12-27 22:45:39,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:45:39,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 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 751 [2021-12-27 22:45:39,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:39,914 INFO L225 Difference]: With dead ends: 10864 [2021-12-27 22:45:39,914 INFO L226 Difference]: Without dead ends: 5700 [2021-12-27 22:45:39,918 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 [2021-12-27 22:45:39,918 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:39,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 227 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-27 22:45:39,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2021-12-27 22:45:39,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5700. [2021-12-27 22:45:39,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5700 states, 5699 states have (on average 1.0700122828566414) internal successors, (6098), 5699 states have internal predecessors, (6098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:39,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5700 states to 5700 states and 6098 transitions. [2021-12-27 22:45:39,966 INFO L78 Accepts]: Start accepts. Automaton has 5700 states and 6098 transitions. Word has length 751 [2021-12-27 22:45:39,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:39,966 INFO L470 AbstractCegarLoop]: Abstraction has 5700 states and 6098 transitions. [2021-12-27 22:45:39,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:39,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5700 states and 6098 transitions. [2021-12-27 22:45:39,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2021-12-27 22:45:39,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:39,972 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:39,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-27 22:45:39,972 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:39,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:39,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1327784350, now seen corresponding path program 1 times [2021-12-27 22:45:39,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:39,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756029758] [2021-12-27 22:45:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:39,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 1166 proven. 72 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2021-12-27 22:45:40,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:40,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756029758] [2021-12-27 22:45:40,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756029758] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 22:45:40,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39229568] [2021-12-27 22:45:40,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:40,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:45:40,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 22:45:40,228 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 22:45:40,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-27 22:45:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:40,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-27 22:45:40,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 22:45:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 879 proven. 0 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2021-12-27 22:45:41,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 22:45:41,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39229568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:41,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-27 22:45:41,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2021-12-27 22:45:41,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986382682] [2021-12-27 22:45:41,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:41,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-27 22:45:41,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:41,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-27 22:45:41,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-27 22:45:41,355 INFO L87 Difference]: Start difference. First operand 5700 states and 6098 transitions. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:41,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:41,978 INFO L93 Difference]: Finished difference Result 12644 states and 13548 transitions. [2021-12-27 22:45:41,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-27 22:45:41,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 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 801 [2021-12-27 22:45:41,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:41,987 INFO L225 Difference]: With dead ends: 12644 [2021-12-27 22:45:41,987 INFO L226 Difference]: Without dead ends: 7124 [2021-12-27 22:45:41,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 800 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-27 22:45:41,991 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 213 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:41,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 60 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-27 22:45:41,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7124 states. [2021-12-27 22:45:42,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7124 to 6768. [2021-12-27 22:45:42,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6768 states, 6767 states have (on average 1.0701935865228314) internal successors, (7242), 6767 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:42,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6768 states to 6768 states and 7242 transitions. [2021-12-27 22:45:42,053 INFO L78 Accepts]: Start accepts. Automaton has 6768 states and 7242 transitions. Word has length 801 [2021-12-27 22:45:42,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:42,053 INFO L470 AbstractCegarLoop]: Abstraction has 6768 states and 7242 transitions. [2021-12-27 22:45:42,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:42,054 INFO L276 IsEmpty]: Start isEmpty. Operand 6768 states and 7242 transitions. [2021-12-27 22:45:42,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2021-12-27 22:45:42,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:42,060 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:42,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-27 22:45:42,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-27 22:45:42,271 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:42,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:42,272 INFO L85 PathProgramCache]: Analyzing trace with hash 776024818, now seen corresponding path program 1 times [2021-12-27 22:45:42,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:42,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898369526] [2021-12-27 22:45:42,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:42,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 575 proven. 222 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2021-12-27 22:45:42,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:42,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898369526] [2021-12-27 22:45:42,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898369526] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 22:45:42,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221389107] [2021-12-27 22:45:42,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:42,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:45:42,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 22:45:42,561 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 22:45:42,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-27 22:45:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:42,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-27 22:45:42,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 22:45:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 797 proven. 0 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2021-12-27 22:45:43,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 22:45:43,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221389107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:43,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-27 22:45:43,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-12-27 22:45:43,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108275888] [2021-12-27 22:45:43,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:43,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:45:43,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:43,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:45:43,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-27 22:45:43,641 INFO L87 Difference]: Start difference. First operand 6768 states and 7242 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:44,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:44,034 INFO L93 Difference]: Finished difference Result 13712 states and 14663 transitions. [2021-12-27 22:45:44,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:45:44,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 803 [2021-12-27 22:45:44,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:44,043 INFO L225 Difference]: With dead ends: 13712 [2021-12-27 22:45:44,043 INFO L226 Difference]: Without dead ends: 7124 [2021-12-27 22:45:44,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 809 GetRequests, 803 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-27 22:45:44,049 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 71 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:44,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 245 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-27 22:45:44,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7124 states. [2021-12-27 22:45:44,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7124 to 6412. [2021-12-27 22:45:44,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 6411 states have (on average 1.0627047262517548) internal successors, (6813), 6411 states have internal predecessors, (6813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:44,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 6813 transitions. [2021-12-27 22:45:44,111 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 6813 transitions. Word has length 803 [2021-12-27 22:45:44,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:44,111 INFO L470 AbstractCegarLoop]: Abstraction has 6412 states and 6813 transitions. [2021-12-27 22:45:44,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:44,112 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 6813 transitions. [2021-12-27 22:45:44,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2021-12-27 22:45:44,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:44,118 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:44,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-27 22:45:44,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:45:44,335 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:44,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:44,336 INFO L85 PathProgramCache]: Analyzing trace with hash 580335584, now seen corresponding path program 1 times [2021-12-27 22:45:44,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:44,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6929517] [2021-12-27 22:45:44,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:44,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2218 backedges. 1202 proven. 72 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2021-12-27 22:45:44,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:44,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6929517] [2021-12-27 22:45:44,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6929517] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 22:45:44,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432500432] [2021-12-27 22:45:44,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:44,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:45:44,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 22:45:44,559 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 22:45:44,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-27 22:45:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:44,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-27 22:45:44,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 22:45:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2218 backedges. 915 proven. 0 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2021-12-27 22:45:45,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 22:45:45,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432500432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:45,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-27 22:45:45,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2021-12-27 22:45:45,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29993631] [2021-12-27 22:45:45,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:45,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-27 22:45:45,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:45,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-27 22:45:45,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-27 22:45:45,718 INFO L87 Difference]: Start difference. First operand 6412 states and 6813 transitions. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:46,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:46,287 INFO L93 Difference]: Finished difference Result 13356 states and 14190 transitions. [2021-12-27 22:45:46,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-27 22:45:46,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 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 834 [2021-12-27 22:45:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:46,294 INFO L225 Difference]: With dead ends: 13356 [2021-12-27 22:45:46,294 INFO L226 Difference]: Without dead ends: 7124 [2021-12-27 22:45:46,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 838 GetRequests, 833 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-27 22:45:46,298 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 180 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:46,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 59 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-27 22:45:46,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7124 states. [2021-12-27 22:45:46,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7124 to 6412. [2021-12-27 22:45:46,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 6411 states have (on average 1.0627047262517548) internal successors, (6813), 6411 states have internal predecessors, (6813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:46,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 6813 transitions. [2021-12-27 22:45:46,369 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 6813 transitions. Word has length 834 [2021-12-27 22:45:46,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:46,369 INFO L470 AbstractCegarLoop]: Abstraction has 6412 states and 6813 transitions. [2021-12-27 22:45:46,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:46,370 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 6813 transitions. [2021-12-27 22:45:46,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2021-12-27 22:45:46,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:46,377 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:46,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-27 22:45:46,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-27 22:45:46,588 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:46,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:46,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1968437427, now seen corresponding path program 1 times [2021-12-27 22:45:46,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:46,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896730198] [2021-12-27 22:45:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:46,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2219 backedges. 1203 proven. 72 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2021-12-27 22:45:46,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:46,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896730198] [2021-12-27 22:45:46,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896730198] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 22:45:46,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238373453] [2021-12-27 22:45:46,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:46,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:45:46,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 22:45:46,792 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 22:45:46,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-27 22:45:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:46,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-27 22:45:46,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 22:45:49,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2219 backedges. 1305 proven. 523 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-12-27 22:45:49,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 22:45:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2219 backedges. 1275 proven. 0 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2021-12-27 22:45:53,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238373453] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-27 22:45:53,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-27 22:45:53,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 10 [2021-12-27 22:45:53,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655625320] [2021-12-27 22:45:53,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:53,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-27 22:45:53,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:53,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-27 22:45:53,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=51, Unknown=1, NotChecked=0, Total=90 [2021-12-27 22:45:53,245 INFO L87 Difference]: Start difference. First operand 6412 states and 6813 transitions. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:53,790 INFO L93 Difference]: Finished difference Result 13178 states and 14027 transitions. [2021-12-27 22:45:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-27 22:45:53,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 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 835 [2021-12-27 22:45:53,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:53,799 INFO L225 Difference]: With dead ends: 13178 [2021-12-27 22:45:53,800 INFO L226 Difference]: Without dead ends: 6946 [2021-12-27 22:45:53,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1673 GetRequests, 1664 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=38, Invalid=51, Unknown=1, NotChecked=0, Total=90 [2021-12-27 22:45:53,804 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 305 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:53,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 10 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 471 Invalid, 0 Unknown, 1 Unchecked, 0.5s Time] [2021-12-27 22:45:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2021-12-27 22:45:53,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 6590. [2021-12-27 22:45:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6590 states, 6589 states have (on average 1.0634390651085142) internal successors, (7007), 6589 states have internal predecessors, (7007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:53,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 7007 transitions. [2021-12-27 22:45:53,864 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 7007 transitions. Word has length 835 [2021-12-27 22:45:53,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:53,864 INFO L470 AbstractCegarLoop]: Abstraction has 6590 states and 7007 transitions. [2021-12-27 22:45:53,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:53,864 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 7007 transitions. [2021-12-27 22:45:53,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2021-12-27 22:45:53,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:53,871 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:53,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-27 22:45:54,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:45:54,092 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:54,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:54,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1839900235, now seen corresponding path program 1 times [2021-12-27 22:45:54,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:54,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019497550] [2021-12-27 22:45:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:54,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 1432 proven. 0 refuted. 0 times theorem prover too weak. 987 trivial. 0 not checked. [2021-12-27 22:45:54,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:54,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019497550] [2021-12-27 22:45:54,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019497550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:54,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 22:45:54,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 22:45:54,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924519376] [2021-12-27 22:45:54,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:54,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:45:54,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:54,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:45:54,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 22:45:54,274 INFO L87 Difference]: Start difference. First operand 6590 states and 7007 transitions. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:54,688 INFO L93 Difference]: Finished difference Result 13000 states and 13833 transitions. [2021-12-27 22:45:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:45:54,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 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 887 [2021-12-27 22:45:54,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:54,701 INFO L225 Difference]: With dead ends: 13000 [2021-12-27 22:45:54,702 INFO L226 Difference]: Without dead ends: 6590 [2021-12-27 22:45:54,706 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 [2021-12-27 22:45:54,708 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:54,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 226 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-27 22:45:54,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2021-12-27 22:45:54,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6412. [2021-12-27 22:45:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 6411 states have (on average 1.0586491966931837) internal successors, (6787), 6411 states have internal predecessors, (6787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:54,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 6787 transitions. [2021-12-27 22:45:54,808 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 6787 transitions. Word has length 887 [2021-12-27 22:45:54,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:54,809 INFO L470 AbstractCegarLoop]: Abstraction has 6412 states and 6787 transitions. [2021-12-27 22:45:54,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:54,809 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 6787 transitions. [2021-12-27 22:45:54,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2021-12-27 22:45:54,822 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:54,823 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:54,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-27 22:45:54,823 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:54,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:54,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1233679576, now seen corresponding path program 1 times [2021-12-27 22:45:54,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:54,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911531985] [2021-12-27 22:45:54,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:54,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 950 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2021-12-27 22:45:55,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:55,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911531985] [2021-12-27 22:45:55,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911531985] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:55,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 22:45:55,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-27 22:45:55,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497966848] [2021-12-27 22:45:55,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:55,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-27 22:45:55,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:55,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-27 22:45:55,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-27 22:45:55,064 INFO L87 Difference]: Start difference. First operand 6412 states and 6787 transitions. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:55,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:55,742 INFO L93 Difference]: Finished difference Result 15670 states and 16671 transitions. [2021-12-27 22:45:55,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-27 22:45:55,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 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 961 [2021-12-27 22:45:55,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:55,750 INFO L225 Difference]: With dead ends: 15670 [2021-12-27 22:45:55,750 INFO L226 Difference]: Without dead ends: 9438 [2021-12-27 22:45:55,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-27 22:45:55,755 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 222 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:55,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 31 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-27 22:45:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9438 states. [2021-12-27 22:45:55,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9438 to 8192. [2021-12-27 22:45:55,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8192 states, 8191 states have (on average 1.0691002319619094) internal successors, (8757), 8191 states have internal predecessors, (8757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:55,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8192 states to 8192 states and 8757 transitions. [2021-12-27 22:45:55,871 INFO L78 Accepts]: Start accepts. Automaton has 8192 states and 8757 transitions. Word has length 961 [2021-12-27 22:45:55,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:55,872 INFO L470 AbstractCegarLoop]: Abstraction has 8192 states and 8757 transitions. [2021-12-27 22:45:55,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:55,872 INFO L276 IsEmpty]: Start isEmpty. Operand 8192 states and 8757 transitions. [2021-12-27 22:45:55,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2021-12-27 22:45:55,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:55,881 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:55,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-27 22:45:55,881 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:55,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:55,882 INFO L85 PathProgramCache]: Analyzing trace with hash 992798614, now seen corresponding path program 1 times [2021-12-27 22:45:55,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:55,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812966493] [2021-12-27 22:45:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:55,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:56,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2803 backedges. 713 proven. 339 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2021-12-27 22:45:56,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:56,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812966493] [2021-12-27 22:45:56,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812966493] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 22:45:56,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256029310] [2021-12-27 22:45:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:56,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:45:56,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 22:45:56,165 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 22:45:56,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-27 22:45:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:56,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-27 22:45:56,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 22:45:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2803 backedges. 1052 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2021-12-27 22:45:57,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 22:45:57,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256029310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:57,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-27 22:45:57,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-27 22:45:57,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379924483] [2021-12-27 22:45:57,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:57,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:45:57,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:57,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:45:57,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-27 22:45:57,400 INFO L87 Difference]: Start difference. First operand 8192 states and 8757 transitions. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:57,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:57,842 INFO L93 Difference]: Finished difference Result 16382 states and 17512 transitions. [2021-12-27 22:45:57,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:45:57,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 994 [2021-12-27 22:45:57,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:57,851 INFO L225 Difference]: With dead ends: 16382 [2021-12-27 22:45:57,851 INFO L226 Difference]: Without dead ends: 8370 [2021-12-27 22:45:57,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 997 GetRequests, 993 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-27 22:45:57,860 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 36 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:57,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 244 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-27 22:45:57,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8370 states. [2021-12-27 22:45:57,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8370 to 7836. [2021-12-27 22:45:57,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7836 states, 7835 states have (on average 1.0544990427568603) internal successors, (8262), 7835 states have internal predecessors, (8262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:57,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 8262 transitions. [2021-12-27 22:45:57,930 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 8262 transitions. Word has length 994 [2021-12-27 22:45:57,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:57,930 INFO L470 AbstractCegarLoop]: Abstraction has 7836 states and 8262 transitions. [2021-12-27 22:45:57,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:57,931 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 8262 transitions. [2021-12-27 22:45:57,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2021-12-27 22:45:57,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:57,939 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:57,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-27 22:45:58,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-27 22:45:58,156 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:58,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:58,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2112499227, now seen corresponding path program 1 times [2021-12-27 22:45:58,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:58,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800006078] [2021-12-27 22:45:58,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:58,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3693 backedges. 1719 proven. 0 refuted. 0 times theorem prover too weak. 1974 trivial. 0 not checked. [2021-12-27 22:45:58,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:58,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800006078] [2021-12-27 22:45:58,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800006078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:45:58,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 22:45:58,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-27 22:45:58,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567706732] [2021-12-27 22:45:58,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:45:58,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-27 22:45:58,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:45:58,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-27 22:45:58,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-27 22:45:58,440 INFO L87 Difference]: Start difference. First operand 7836 states and 8262 transitions. Second operand has 7 states, 7 states have (on average 48.857142857142854) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:59,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:45:59,028 INFO L93 Difference]: Finished difference Result 14646 states and 15424 transitions. [2021-12-27 22:45:59,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-27 22:45:59,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 48.857142857142854) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 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 1008 [2021-12-27 22:45:59,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:45:59,034 INFO L225 Difference]: With dead ends: 14646 [2021-12-27 22:45:59,034 INFO L226 Difference]: Without dead ends: 6719 [2021-12-27 22:45:59,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-27 22:45:59,038 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 95 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-27 22:45:59,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 27 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-27 22:45:59,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6719 states. [2021-12-27 22:45:59,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6719 to 6633. [2021-12-27 22:45:59,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6633 states, 6632 states have (on average 1.0455367913148372) internal successors, (6934), 6632 states have internal predecessors, (6934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:59,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6633 states to 6633 states and 6934 transitions. [2021-12-27 22:45:59,089 INFO L78 Accepts]: Start accepts. Automaton has 6633 states and 6934 transitions. Word has length 1008 [2021-12-27 22:45:59,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:45:59,089 INFO L470 AbstractCegarLoop]: Abstraction has 6633 states and 6934 transitions. [2021-12-27 22:45:59,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 48.857142857142854) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:45:59,089 INFO L276 IsEmpty]: Start isEmpty. Operand 6633 states and 6934 transitions. [2021-12-27 22:45:59,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2021-12-27 22:45:59,097 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:45:59,098 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:45:59,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-27 22:45:59,098 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:45:59,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:45:59,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1181085489, now seen corresponding path program 1 times [2021-12-27 22:45:59,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:45:59,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330791669] [2021-12-27 22:45:59,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:59,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:45:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:59,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3428 backedges. 1231 proven. 390 refuted. 0 times theorem prover too weak. 1807 trivial. 0 not checked. [2021-12-27 22:45:59,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:45:59,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330791669] [2021-12-27 22:45:59,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330791669] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 22:45:59,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847710769] [2021-12-27 22:45:59,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:45:59,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:45:59,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 22:45:59,434 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 22:45:59,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-27 22:45:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:45:59,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-27 22:45:59,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 22:46:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3428 backedges. 992 proven. 0 refuted. 0 times theorem prover too weak. 2436 trivial. 0 not checked. [2021-12-27 22:46:01,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 22:46:01,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847710769] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:46:01,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-27 22:46:01,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-27 22:46:01,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125377144] [2021-12-27 22:46:01,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:46:01,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:46:01,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:46:01,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:46:01,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-27 22:46:01,143 INFO L87 Difference]: Start difference. First operand 6633 states and 6934 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:46:01,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:46:01,518 INFO L93 Difference]: Finished difference Result 14688 states and 15322 transitions. [2021-12-27 22:46:01,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:46:01,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 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 1058 [2021-12-27 22:46:01,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:46:01,525 INFO L225 Difference]: With dead ends: 14688 [2021-12-27 22:46:01,525 INFO L226 Difference]: Without dead ends: 8235 [2021-12-27 22:46:01,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1062 GetRequests, 1057 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-27 22:46:01,529 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-27 22:46:01,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 52 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-27 22:46:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8235 states. [2021-12-27 22:46:01,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8235 to 6811. [2021-12-27 22:46:01,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6811 states, 6810 states have (on average 1.0449339207048458) internal successors, (7116), 6810 states have internal predecessors, (7116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:46:01,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6811 states to 6811 states and 7116 transitions. [2021-12-27 22:46:01,593 INFO L78 Accepts]: Start accepts. Automaton has 6811 states and 7116 transitions. Word has length 1058 [2021-12-27 22:46:01,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:46:01,594 INFO L470 AbstractCegarLoop]: Abstraction has 6811 states and 7116 transitions. [2021-12-27 22:46:01,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:46:01,594 INFO L276 IsEmpty]: Start isEmpty. Operand 6811 states and 7116 transitions. [2021-12-27 22:46:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1394 [2021-12-27 22:46:01,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:46:01,606 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:46:01,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-27 22:46:01,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-27 22:46:01,819 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:46:01,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:46:01,820 INFO L85 PathProgramCache]: Analyzing trace with hash 960342611, now seen corresponding path program 1 times [2021-12-27 22:46:01,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:46:01,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170965551] [2021-12-27 22:46:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:46:01,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:46:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:46:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5988 backedges. 1412 proven. 0 refuted. 0 times theorem prover too weak. 4576 trivial. 0 not checked. [2021-12-27 22:46:02,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:46:02,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170965551] [2021-12-27 22:46:02,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170965551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:46:02,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 22:46:02,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-27 22:46:02,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436905545] [2021-12-27 22:46:02,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:46:02,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-27 22:46:02,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:46:02,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-27 22:46:02,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-27 22:46:02,206 INFO L87 Difference]: Start difference. First operand 6811 states and 7116 transitions. Second operand has 5 states, 5 states have (on average 66.4) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:46:02,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:46:02,924 INFO L93 Difference]: Finished difference Result 13466 states and 14075 transitions. [2021-12-27 22:46:02,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-27 22:46:02,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 66.4) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 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 1393 [2021-12-27 22:46:02,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:46:02,930 INFO L225 Difference]: With dead ends: 13466 [2021-12-27 22:46:02,930 INFO L226 Difference]: Without dead ends: 6811 [2021-12-27 22:46:02,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-27 22:46:02,933 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 100 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-27 22:46:02,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 27 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-27 22:46:02,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6811 states. [2021-12-27 22:46:02,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6811 to 6811. [2021-12-27 22:46:02,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6811 states, 6810 states have (on average 1.0434654919236417) internal successors, (7106), 6810 states have internal predecessors, (7106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:46:02,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6811 states to 6811 states and 7106 transitions. [2021-12-27 22:46:02,993 INFO L78 Accepts]: Start accepts. Automaton has 6811 states and 7106 transitions. Word has length 1393 [2021-12-27 22:46:02,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:46:02,994 INFO L470 AbstractCegarLoop]: Abstraction has 6811 states and 7106 transitions. [2021-12-27 22:46:02,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.4) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:46:02,994 INFO L276 IsEmpty]: Start isEmpty. Operand 6811 states and 7106 transitions. [2021-12-27 22:46:03,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1512 [2021-12-27 22:46:03,008 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:46:03,008 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:46:03,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-27 22:46:03,008 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:46:03,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:46:03,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1140105243, now seen corresponding path program 1 times [2021-12-27 22:46:03,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:46:03,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333196147] [2021-12-27 22:46:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:46:03,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:46:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:46:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7218 backedges. 822 proven. 819 refuted. 0 times theorem prover too weak. 5577 trivial. 0 not checked. [2021-12-27 22:46:03,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:46:03,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333196147] [2021-12-27 22:46:03,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333196147] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 22:46:03,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627610601] [2021-12-27 22:46:03,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:46:03,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 22:46:03,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 22:46:03,401 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 22:46:03,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-27 22:46:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:46:03,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1849 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-27 22:46:03,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 22:46:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7218 backedges. 1641 proven. 0 refuted. 0 times theorem prover too weak. 5577 trivial. 0 not checked. [2021-12-27 22:46:05,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 22:46:05,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627610601] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:46:05,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-27 22:46:05,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-27 22:46:05,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49464633] [2021-12-27 22:46:05,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:46:05,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:46:05,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:46:05,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:46:05,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-27 22:46:05,156 INFO L87 Difference]: Start difference. First operand 6811 states and 7106 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:46:05,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:46:05,490 INFO L93 Difference]: Finished difference Result 14688 states and 15290 transitions. [2021-12-27 22:46:05,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:46:05,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 1511 [2021-12-27 22:46:05,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:46:05,494 INFO L225 Difference]: With dead ends: 14688 [2021-12-27 22:46:05,494 INFO L226 Difference]: Without dead ends: 5209 [2021-12-27 22:46:05,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1514 GetRequests, 1510 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-27 22:46:05,498 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 71 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-27 22:46:05,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 233 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-27 22:46:05,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5209 states. [2021-12-27 22:46:05,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5209 to 4675. [2021-12-27 22:46:05,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4675 states, 4674 states have (on average 1.0295250320924263) internal successors, (4812), 4674 states have internal predecessors, (4812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:46:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4675 states to 4675 states and 4812 transitions. [2021-12-27 22:46:05,531 INFO L78 Accepts]: Start accepts. Automaton has 4675 states and 4812 transitions. Word has length 1511 [2021-12-27 22:46:05,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:46:05,531 INFO L470 AbstractCegarLoop]: Abstraction has 4675 states and 4812 transitions. [2021-12-27 22:46:05,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:46:05,532 INFO L276 IsEmpty]: Start isEmpty. Operand 4675 states and 4812 transitions. [2021-12-27 22:46:05,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1755 [2021-12-27 22:46:05,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:46:05,549 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 9, 9, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:46:05,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-27 22:46:05,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-27 22:46:05,750 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:46:05,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:46:05,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1349051158, now seen corresponding path program 1 times [2021-12-27 22:46:05,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:46:05,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864422641] [2021-12-27 22:46:05,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:46:05,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:46:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:46:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 9921 backedges. 3134 proven. 0 refuted. 0 times theorem prover too weak. 6787 trivial. 0 not checked. [2021-12-27 22:46:06,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:46:06,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864422641] [2021-12-27 22:46:06,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864422641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:46:06,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 22:46:06,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 22:46:06,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115483335] [2021-12-27 22:46:06,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:46:06,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-27 22:46:06,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:46:06,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-27 22:46:06,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-27 22:46:06,282 INFO L87 Difference]: Start difference. First operand 4675 states and 4812 transitions. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:46:06,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:46:06,668 INFO L93 Difference]: Finished difference Result 9192 states and 9467 transitions. [2021-12-27 22:46:06,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-27 22:46:06,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 1754 [2021-12-27 22:46:06,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:46:06,672 INFO L225 Difference]: With dead ends: 9192 [2021-12-27 22:46:06,672 INFO L226 Difference]: Without dead ends: 4853 [2021-12-27 22:46:06,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-27 22:46:06,675 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-27 22:46:06,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 17 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-27 22:46:06,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4853 states. [2021-12-27 22:46:06,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4853 to 4675. [2021-12-27 22:46:06,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4675 states, 4674 states have (on average 1.0282413350449293) internal successors, (4806), 4674 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:46:06,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4675 states to 4675 states and 4806 transitions. [2021-12-27 22:46:06,709 INFO L78 Accepts]: Start accepts. Automaton has 4675 states and 4806 transitions. Word has length 1754 [2021-12-27 22:46:06,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:46:06,710 INFO L470 AbstractCegarLoop]: Abstraction has 4675 states and 4806 transitions. [2021-12-27 22:46:06,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:46:06,710 INFO L276 IsEmpty]: Start isEmpty. Operand 4675 states and 4806 transitions. [2021-12-27 22:46:06,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1833 [2021-12-27 22:46:06,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 22:46:06,729 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 9, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 22:46:06,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-27 22:46:06,729 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 22:46:06,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 22:46:06,730 INFO L85 PathProgramCache]: Analyzing trace with hash -382520307, now seen corresponding path program 1 times [2021-12-27 22:46:06,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 22:46:06,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176514498] [2021-12-27 22:46:06,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 22:46:06,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 22:46:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 22:46:07,257 INFO L134 CoverageAnalysis]: Checked inductivity of 11114 backedges. 6236 proven. 0 refuted. 0 times theorem prover too weak. 4878 trivial. 0 not checked. [2021-12-27 22:46:07,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 22:46:07,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176514498] [2021-12-27 22:46:07,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176514498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 22:46:07,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 22:46:07,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 22:46:07,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388239982] [2021-12-27 22:46:07,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 22:46:07,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 22:46:07,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 22:46:07,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 22:46:07,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 22:46:07,260 INFO L87 Difference]: Start difference. First operand 4675 states and 4806 transitions. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:46:07,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 22:46:07,570 INFO L93 Difference]: Finished difference Result 8769 states and 9017 transitions. [2021-12-27 22:46:07,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 22:46:07,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1832 [2021-12-27 22:46:07,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 22:46:07,572 INFO L225 Difference]: With dead ends: 8769 [2021-12-27 22:46:07,572 INFO L226 Difference]: Without dead ends: 0 [2021-12-27 22:46:07,575 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 [2021-12-27 22:46:07,575 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-27 22:46:07,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 201 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-27 22:46:07,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-27 22:46:07,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-27 22:46:07,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:46:07,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-27 22:46:07,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1832 [2021-12-27 22:46:07,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 22:46:07,576 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-27 22:46:07,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 22:46:07,577 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-27 22:46:07,577 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-27 22:46:07,579 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-27 22:46:07,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-27 22:46:07,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-27 22:46:11,969 INFO L858 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2021-12-27 22:46:11,969 INFO L858 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2021-12-27 22:46:11,969 INFO L858 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2021-12-27 22:46:11,969 INFO L858 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2021-12-27 22:46:11,969 INFO L858 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2021-12-27 22:46:11,969 INFO L858 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,969 INFO L858 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,970 INFO L858 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,970 INFO L858 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2021-12-27 22:46:11,970 INFO L858 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2021-12-27 22:46:11,970 INFO L858 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-12-27 22:46:11,970 INFO L858 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-12-27 22:46:11,970 INFO L858 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-12-27 22:46:11,970 INFO L858 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2021-12-27 22:46:11,970 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2021-12-27 22:46:11,970 INFO L858 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2021-12-27 22:46:11,970 INFO L858 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,971 INFO L858 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,971 INFO L858 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,971 INFO L858 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2021-12-27 22:46:11,971 INFO L858 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-12-27 22:46:11,971 INFO L858 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-12-27 22:46:11,971 INFO L858 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-12-27 22:46:11,971 INFO L858 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2021-12-27 22:46:11,971 INFO L858 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2021-12-27 22:46:11,971 INFO L858 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2021-12-27 22:46:11,972 INFO L858 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2021-12-27 22:46:11,972 INFO L858 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2021-12-27 22:46:11,972 INFO L858 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,972 INFO L858 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,972 INFO L858 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,972 INFO L858 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2021-12-27 22:46:11,972 INFO L858 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-12-27 22:46:11,972 INFO L858 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-12-27 22:46:11,972 INFO L858 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-12-27 22:46:11,972 INFO L858 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2021-12-27 22:46:11,973 INFO L858 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2021-12-27 22:46:11,973 INFO L858 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2021-12-27 22:46:11,973 INFO L858 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,973 INFO L858 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,973 INFO L858 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,973 INFO L858 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2021-12-27 22:46:11,973 INFO L858 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-12-27 22:46:11,973 INFO L858 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-12-27 22:46:11,973 INFO L858 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-12-27 22:46:11,973 INFO L858 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2021-12-27 22:46:11,974 INFO L858 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2021-12-27 22:46:11,974 INFO L858 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2021-12-27 22:46:11,974 INFO L858 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2021-12-27 22:46:11,974 INFO L858 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,974 INFO L858 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,974 INFO L858 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,974 INFO L858 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2021-12-27 22:46:11,974 INFO L858 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2021-12-27 22:46:11,974 INFO L858 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-12-27 22:46:11,974 INFO L858 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-12-27 22:46:11,975 INFO L858 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-12-27 22:46:11,975 INFO L858 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2021-12-27 22:46:11,975 INFO L858 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2021-12-27 22:46:11,975 INFO L858 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2021-12-27 22:46:11,975 INFO L858 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,975 INFO L858 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,975 INFO L858 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,975 INFO L858 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2021-12-27 22:46:11,975 INFO L858 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-12-27 22:46:11,976 INFO L858 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-12-27 22:46:11,976 INFO L858 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-12-27 22:46:11,976 INFO L858 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2021-12-27 22:46:11,976 INFO L858 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2021-12-27 22:46:11,976 INFO L858 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2021-12-27 22:46:11,976 INFO L858 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2021-12-27 22:46:11,976 INFO L858 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2021-12-27 22:46:11,976 INFO L858 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,976 INFO L858 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,976 INFO L858 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,977 INFO L858 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2021-12-27 22:46:11,977 INFO L858 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-12-27 22:46:11,977 INFO L858 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-12-27 22:46:11,977 INFO L858 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-12-27 22:46:11,977 INFO L858 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2021-12-27 22:46:11,977 INFO L858 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2021-12-27 22:46:11,977 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2021-12-27 22:46:11,977 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-27 22:46:11,977 INFO L858 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,977 INFO L858 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,978 INFO L858 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,978 INFO L858 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2021-12-27 22:46:11,978 INFO L858 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-12-27 22:46:11,978 INFO L858 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-12-27 22:46:11,978 INFO L858 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-12-27 22:46:11,978 INFO L858 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2021-12-27 22:46:11,978 INFO L858 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2021-12-27 22:46:11,978 INFO L858 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2021-12-27 22:46:11,978 INFO L858 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2021-12-27 22:46:11,978 INFO L858 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2021-12-27 22:46:11,979 INFO L858 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,979 INFO L858 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,979 INFO L858 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,979 INFO L858 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2021-12-27 22:46:11,979 INFO L858 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-12-27 22:46:11,979 INFO L858 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-12-27 22:46:11,979 INFO L858 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-12-27 22:46:11,979 INFO L858 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2021-12-27 22:46:11,979 INFO L858 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2021-12-27 22:46:11,980 INFO L858 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2021-12-27 22:46:11,980 INFO L858 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2021-12-27 22:46:11,980 INFO L858 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,980 INFO L858 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,980 INFO L858 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,980 INFO L858 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-12-27 22:46:11,980 INFO L858 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-12-27 22:46:11,980 INFO L858 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-12-27 22:46:11,980 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-27 22:46:11,980 INFO L858 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2021-12-27 22:46:11,981 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 149) no Hoare annotation was computed. [2021-12-27 22:46:11,981 INFO L858 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2021-12-27 22:46:11,981 INFO L858 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2021-12-27 22:46:11,981 INFO L858 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2021-12-27 22:46:11,981 INFO L858 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2021-12-27 22:46:11,981 INFO L858 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,981 INFO L858 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,981 INFO L858 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,981 INFO L858 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2021-12-27 22:46:11,981 INFO L858 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2021-12-27 22:46:11,982 INFO L858 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-12-27 22:46:11,982 INFO L858 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-12-27 22:46:11,982 INFO L858 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-12-27 22:46:11,982 INFO L858 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2021-12-27 22:46:11,982 INFO L858 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2021-12-27 22:46:11,982 INFO L858 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2021-12-27 22:46:11,982 INFO L858 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,982 INFO L858 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,982 INFO L858 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,983 INFO L858 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-12-27 22:46:11,983 INFO L858 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-12-27 22:46:11,983 INFO L858 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-12-27 22:46:11,983 INFO L858 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2021-12-27 22:46:11,983 INFO L858 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2021-12-27 22:46:11,983 INFO L858 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2021-12-27 22:46:11,983 INFO L858 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2021-12-27 22:46:11,983 INFO L858 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2021-12-27 22:46:11,983 INFO L858 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,983 INFO L858 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,984 INFO L858 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,984 INFO L858 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2021-12-27 22:46:11,984 INFO L858 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2021-12-27 22:46:11,984 INFO L858 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-12-27 22:46:11,984 INFO L858 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-12-27 22:46:11,984 INFO L858 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-12-27 22:46:11,984 INFO L858 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2021-12-27 22:46:11,984 INFO L858 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2021-12-27 22:46:11,984 INFO L858 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2021-12-27 22:46:11,985 INFO L858 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,985 INFO L858 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,985 INFO L858 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,985 INFO L858 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2021-12-27 22:46:11,985 INFO L858 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-12-27 22:46:11,985 INFO L858 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-12-27 22:46:11,985 INFO L858 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-12-27 22:46:11,985 INFO L858 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2021-12-27 22:46:11,985 INFO L858 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2021-12-27 22:46:11,985 INFO L858 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2021-12-27 22:46:11,986 INFO L858 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2021-12-27 22:46:11,986 INFO L858 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,986 INFO L858 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,986 INFO L858 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,986 INFO L858 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2021-12-27 22:46:11,986 INFO L858 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-12-27 22:46:11,986 INFO L858 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-12-27 22:46:11,986 INFO L858 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-12-27 22:46:11,986 INFO L858 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2021-12-27 22:46:11,986 INFO L858 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2021-12-27 22:46:11,987 INFO L858 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2021-12-27 22:46:11,987 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2021-12-27 22:46:11,987 INFO L858 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,987 INFO L858 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,987 INFO L858 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2021-12-27 22:46:11,987 INFO L858 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-12-27 22:46:11,987 INFO L858 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-12-27 22:46:11,987 INFO L858 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2021-12-27 22:46:11,987 INFO L858 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2021-12-27 22:46:11,987 INFO L858 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2021-12-27 22:46:11,988 INFO L858 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2021-12-27 22:46:11,988 INFO L858 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2021-12-27 22:46:11,988 INFO L858 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,988 INFO L858 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,988 INFO L858 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2021-12-27 22:46:11,988 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-27 22:46:11,988 INFO L858 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-12-27 22:46:11,988 INFO L858 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-12-27 22:46:11,988 INFO L858 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2021-12-27 22:46:11,988 INFO L858 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2021-12-27 22:46:11,989 INFO L858 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2021-12-27 22:46:11,989 INFO L858 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,989 INFO L858 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,989 INFO L854 garLoopResultBuilder]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse5 (<= 8 ~a21~0)) (.cse6 (<= ~a21~0 8)) (.cse11 (<= ~a12~0 11)) (.cse0 (<= 9 ~a21~0)) (.cse2 (<= ~a15~0 8)) (.cse12 (<= ~a21~0 6)) (.cse3 (<= (+ 49 ~a12~0) 0)) (.cse13 (<= 6 ~a15~0)) (.cse8 (<= ~a15~0 7)) (.cse1 (= ~a24~0 1)) (.cse7 (<= 7 ~a21~0)) (.cse4 (<= 9 ~a15~0)) (.cse9 (<= 0 (+ ~a12~0 42))) (.cse10 (<= (div (+ (- 562768) (div (* ~a12~0 9) 10)) 5) 11))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse4 .cse5 .cse6 (<= (+ ~a12~0 355062) 0)) (and .cse1 .cse7 (<= ~a12~0 76) .cse8 .cse9) (and .cse1 .cse8 .cse5 .cse10) (and (<= ~a12~0 73282) .cse1 .cse5 .cse6 .cse9) (and .cse11 .cse2 .cse12 .cse8) (and .cse1 (<= 10 ~a21~0) .cse10) (and .cse11 .cse1 .cse2 (not (<= (+ ~a12~0 43) 0))) (and .cse0 .cse1 .cse9 (not (< 80 ~a12~0))) (and .cse1 .cse12 (= 5 ~a15~0) (<= 526013 ~a12~0) .cse10) (and .cse1 (or (and .cse13 .cse2) (and .cse2 (not (= ~a21~0 6)))) .cse12 .cse9 .cse10) (and .cse1 .cse7 (<= ~a21~0 7) .cse3 (= ~a15~0 8)) (and .cse1 .cse4 .cse9 (<= ~a12~0 225871)) (and .cse13 .cse1 .cse8 .cse10) (and .cse1 .cse7 .cse4 .cse9 .cse10))) [2021-12-27 22:46:11,989 INFO L858 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2021-12-27 22:46:11,989 INFO L858 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2021-12-27 22:46:11,989 INFO L858 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-12-27 22:46:11,990 INFO L858 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-12-27 22:46:11,990 INFO L858 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2021-12-27 22:46:11,990 INFO L858 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2021-12-27 22:46:11,990 INFO L858 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2021-12-27 22:46:11,990 INFO L858 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2021-12-27 22:46:11,990 INFO L858 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,990 INFO L858 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,990 INFO L861 garLoopResultBuilder]: At program point L884(lines 884 900) the Hoare annotation is: true [2021-12-27 22:46:11,990 INFO L858 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2021-12-27 22:46:11,990 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2021-12-27 22:46:11,991 INFO L858 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-12-27 22:46:11,991 INFO L858 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-12-27 22:46:11,991 INFO L858 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2021-12-27 22:46:11,991 INFO L858 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2021-12-27 22:46:11,991 INFO L858 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2021-12-27 22:46:11,991 INFO L858 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,991 INFO L858 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,991 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-27 22:46:11,991 INFO L858 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2021-12-27 22:46:11,992 INFO L858 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2021-12-27 22:46:11,992 INFO L858 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-12-27 22:46:11,992 INFO L858 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-12-27 22:46:11,992 INFO L858 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2021-12-27 22:46:11,992 INFO L858 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2021-12-27 22:46:11,992 INFO L858 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,992 INFO L858 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,992 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-12-27 22:46:11,992 INFO L858 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,992 INFO L858 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2021-12-27 22:46:11,993 INFO L854 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse5 (<= 8 ~a21~0)) (.cse6 (<= ~a21~0 8)) (.cse11 (<= ~a12~0 11)) (.cse0 (<= 9 ~a21~0)) (.cse2 (<= ~a15~0 8)) (.cse12 (<= ~a21~0 6)) (.cse3 (<= (+ 49 ~a12~0) 0)) (.cse13 (<= 6 ~a15~0)) (.cse8 (<= ~a15~0 7)) (.cse1 (= ~a24~0 1)) (.cse7 (<= 7 ~a21~0)) (.cse4 (<= 9 ~a15~0)) (.cse9 (<= 0 (+ ~a12~0 42))) (.cse10 (<= (div (+ (- 562768) (div (* ~a12~0 9) 10)) 5) 11))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse4 .cse5 .cse6 (<= (+ ~a12~0 355062) 0)) (and .cse1 .cse7 (<= ~a12~0 76) .cse8 .cse9) (and .cse1 .cse8 .cse5 .cse10) (and (<= ~a12~0 73282) .cse1 .cse5 .cse6 .cse9) (and .cse11 .cse2 .cse12 .cse8) (and .cse1 (<= 10 ~a21~0) .cse10) (and .cse11 .cse1 .cse2 (not (<= (+ ~a12~0 43) 0))) (and .cse0 .cse1 .cse9 (not (< 80 ~a12~0))) (and .cse1 .cse12 (= 5 ~a15~0) (<= 526013 ~a12~0) .cse10) (and .cse1 (or (and .cse13 .cse2) (and .cse2 (not (= ~a21~0 6)))) .cse12 .cse9 .cse10) (and .cse1 .cse7 (<= ~a21~0 7) .cse3 (= ~a15~0 8)) (and .cse1 .cse4 .cse9 (<= ~a12~0 225871)) (and .cse13 .cse1 .cse8 .cse10) (and .cse1 .cse7 .cse4 .cse9 .cse10))) [2021-12-27 22:46:11,993 INFO L858 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2021-12-27 22:46:11,993 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2021-12-27 22:46:11,993 INFO L858 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-12-27 22:46:11,993 INFO L858 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-12-27 22:46:11,993 INFO L858 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-12-27 22:46:11,993 INFO L858 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2021-12-27 22:46:11,993 INFO L858 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2021-12-27 22:46:11,993 INFO L858 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2021-12-27 22:46:11,994 INFO L858 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2021-12-27 22:46:11,994 INFO L858 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,994 INFO L858 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,994 INFO L858 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2021-12-27 22:46:11,994 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2021-12-27 22:46:11,994 INFO L858 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-12-27 22:46:11,994 INFO L858 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-12-27 22:46:11,994 INFO L858 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-12-27 22:46:11,997 INFO L732 BasicCegarLoop]: Path program 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] [2021-12-27 22:46:11,998 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-27 22:46:12,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 10:46:12 BoogieIcfgContainer [2021-12-27 22:46:12,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-27 22:46:12,011 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-27 22:46:12,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-27 22:46:12,011 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-27 22:46:12,011 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 10:45:23" (3/4) ... [2021-12-27 22:46:12,013 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-27 22:46:12,027 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-12-27 22:46:12,032 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-27 22:46:12,032 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-27 22:46:12,033 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-27 22:46:12,133 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-27 22:46:12,134 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-27 22:46:12,134 INFO L158 Benchmark]: Toolchain (without parser) took 49983.54ms. Allocated memory was 58.7MB in the beginning and 864.0MB in the end (delta: 805.3MB). Free memory was 35.6MB in the beginning and 472.9MB in the end (delta: -437.3MB). Peak memory consumption was 367.4MB. Max. memory is 16.1GB. [2021-12-27 22:46:12,134 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 40.7MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 22:46:12,135 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.06ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 35.4MB in the beginning and 51.4MB in the end (delta: -16.0MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2021-12-27 22:46:12,135 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.20ms. Allocated memory is still 73.4MB. Free memory was 51.4MB in the beginning and 41.5MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-27 22:46:12,136 INFO L158 Benchmark]: Boogie Preprocessor took 56.35ms. Allocated memory is still 73.4MB. Free memory was 41.5MB in the beginning and 35.9MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-27 22:46:12,137 INFO L158 Benchmark]: RCFGBuilder took 984.20ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 35.6MB in the beginning and 49.2MB in the end (delta: -13.6MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2021-12-27 22:46:12,138 INFO L158 Benchmark]: TraceAbstraction took 48326.52ms. Allocated memory was 94.4MB in the beginning and 864.0MB in the end (delta: 769.7MB). Free memory was 48.5MB in the beginning and 491.7MB in the end (delta: -443.2MB). Peak memory consumption was 612.0MB. Max. memory is 16.1GB. [2021-12-27 22:46:12,141 INFO L158 Benchmark]: Witness Printer took 122.74ms. Allocated memory is still 864.0MB. Free memory was 491.7MB in the beginning and 472.9MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-27 22:46:12,144 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 40.7MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 406.06ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 35.4MB in the beginning and 51.4MB in the end (delta: -16.0MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.20ms. Allocated memory is still 73.4MB. Free memory was 51.4MB in the beginning and 41.5MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.35ms. Allocated memory is still 73.4MB. Free memory was 41.5MB in the beginning and 35.9MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 984.20ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 35.6MB in the beginning and 49.2MB in the end (delta: -13.6MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. * TraceAbstraction took 48326.52ms. Allocated memory was 94.4MB in the beginning and 864.0MB in the end (delta: 769.7MB). Free memory was 48.5MB in the beginning and 491.7MB in the end (delta: -443.2MB). Peak memory consumption was 612.0MB. Max. memory is 16.1GB. * Witness Printer took 122.74ms. Allocated memory is still 864.0MB. Free memory was 491.7MB in the beginning and 472.9MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 149]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.3s, OverallIterations: 28, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 13.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3192 SdHoareTripleChecker+Valid, 12.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3192 mSDsluCounter, 3041 SdHoareTripleChecker+Invalid, 9.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1 IncrementalHoareTripleChecker+Unchecked, 193 mSDsCounter, 1672 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16885 IncrementalHoareTripleChecker+Invalid, 18558 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1672 mSolverCounterUnsat, 2848 mSDtfsCounter, 16885 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11023 GetRequests, 10937 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8192occurred in iteration=21, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 28 MinimizatonAttempts, 10410 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 106 NumberOfFragments, 595 HoareAnnotationTreeSize, 3 FomulaSimplifications, 23218 FormulaSimplificationTreeSizeReduction, 2.3s HoareSimplificationTime, 3 FomulaSimplificationsInter, 56420 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 21.9s InterpolantComputationTime, 30927 NumberOfCodeBlocks, 30927 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 32354 ConstructedInterpolants, 115 QuantifiedInterpolants, 123024 SizeOfPredicates, 1 NumberOfNonLiveVariables, 11929 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 42 InterpolantComputations, 27 PerfectInterpolantSequences, 97972/101215 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((((((((((((9 <= a21 && a24 == 1) && a15 <= 8) && 49 + a12 <= 0) || ((((a24 == 1 && 9 <= a15) && 8 <= a21) && a21 <= 8) && a12 + 355062 <= 0)) || ((((a24 == 1 && 7 <= a21) && a12 <= 76) && a15 <= 7) && 0 <= a12 + 42)) || (((a24 == 1 && a15 <= 7) && 8 <= a21) && (-562768 + a12 * 9 / 10) / 5 <= 11)) || ((((a12 <= 73282 && a24 == 1) && 8 <= a21) && a21 <= 8) && 0 <= a12 + 42)) || (((a12 <= 11 && a15 <= 8) && a21 <= 6) && a15 <= 7)) || ((a24 == 1 && 10 <= a21) && (-562768 + a12 * 9 / 10) / 5 <= 11)) || (((a12 <= 11 && a24 == 1) && a15 <= 8) && !(a12 + 43 <= 0))) || (((9 <= a21 && a24 == 1) && 0 <= a12 + 42) && !(80 < a12))) || ((((a24 == 1 && a21 <= 6) && 5 == a15) && 526013 <= a12) && (-562768 + a12 * 9 / 10) / 5 <= 11)) || ((((a24 == 1 && ((6 <= a15 && a15 <= 8) || (a15 <= 8 && !(a21 == 6)))) && a21 <= 6) && 0 <= a12 + 42) && (-562768 + a12 * 9 / 10) / 5 <= 11)) || ((((a24 == 1 && 7 <= a21) && a21 <= 7) && 49 + a12 <= 0) && a15 == 8)) || (((a24 == 1 && 9 <= a15) && 0 <= a12 + 42) && a12 <= 225871)) || (((6 <= a15 && a24 == 1) && a15 <= 7) && (-562768 + a12 * 9 / 10) / 5 <= 11)) || ((((a24 == 1 && 7 <= a21) && 9 <= a15) && 0 <= a12 + 42) && (-562768 + a12 * 9 / 10) / 5 <= 11) - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: ((((((((((((((((9 <= a21 && a24 == 1) && a15 <= 8) && 49 + a12 <= 0) || ((((a24 == 1 && 9 <= a15) && 8 <= a21) && a21 <= 8) && a12 + 355062 <= 0)) || ((((a24 == 1 && 7 <= a21) && a12 <= 76) && a15 <= 7) && 0 <= a12 + 42)) || (((a24 == 1 && a15 <= 7) && 8 <= a21) && (-562768 + a12 * 9 / 10) / 5 <= 11)) || ((((a12 <= 73282 && a24 == 1) && 8 <= a21) && a21 <= 8) && 0 <= a12 + 42)) || (((a12 <= 11 && a15 <= 8) && a21 <= 6) && a15 <= 7)) || ((a24 == 1 && 10 <= a21) && (-562768 + a12 * 9 / 10) / 5 <= 11)) || (((a12 <= 11 && a24 == 1) && a15 <= 8) && !(a12 + 43 <= 0))) || (((9 <= a21 && a24 == 1) && 0 <= a12 + 42) && !(80 < a12))) || ((((a24 == 1 && a21 <= 6) && 5 == a15) && 526013 <= a12) && (-562768 + a12 * 9 / 10) / 5 <= 11)) || ((((a24 == 1 && ((6 <= a15 && a15 <= 8) || (a15 <= 8 && !(a21 == 6)))) && a21 <= 6) && 0 <= a12 + 42) && (-562768 + a12 * 9 / 10) / 5 <= 11)) || ((((a24 == 1 && 7 <= a21) && a21 <= 7) && 49 + a12 <= 0) && a15 == 8)) || (((a24 == 1 && 9 <= a15) && 0 <= a12 + 42) && a12 <= 225871)) || (((6 <= a15 && a24 == 1) && a15 <= 7) && (-562768 + a12 * 9 / 10) / 5 <= 11)) || ((((a24 == 1 && 7 <= a21) && 9 <= a15) && 0 <= a12 + 42) && (-562768 + a12 * 9 / 10) / 5 <= 11) RESULT: Ultimate proved your program to be correct! [2021-12-27 22:46:12,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE