./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f3302497ea925232664f79330834ccdc9bbd9e62586cb93dfb7cf8f1101390c2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:08:07,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:08:07,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:08:07,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:08:07,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:08:07,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:08:07,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:08:07,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:08:07,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:08:07,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:08:07,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:08:07,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:08:07,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:08:07,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:08:07,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:08:07,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:08:07,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:08:07,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:08:07,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:08:07,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:08:07,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:08:07,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:08:07,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:08:07,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:08:07,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:08:07,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:08:07,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:08:07,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:08:07,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:08:07,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:08:07,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:08:07,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:08:07,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:08:07,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:08:07,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:08:07,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:08:07,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:08:07,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:08:07,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:08:07,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:08:07,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:08:07,813 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:08:07,846 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:08:07,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:08:07,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:08:07,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:08:07,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:08:07,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:08:07,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:08:07,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:08:07,849 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:08:07,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:08:07,850 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:08:07,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:08:07,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:08:07,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:08:07,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:08:07,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:08:07,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:08:07,851 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:08:07,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:08:07,852 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:08:07,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:08:07,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:08:07,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:08:07,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:08:07,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:08:07,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:08:07,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:08:07,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:08:07,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:08:07,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:08:07,855 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:08:07,855 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:08:07,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:08:07,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:08:07,856 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3302497ea925232664f79330834ccdc9bbd9e62586cb93dfb7cf8f1101390c2 [2021-12-22 12:08:08,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:08:08,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:08:08,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:08:08,253 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:08:08,254 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:08:08,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-12-22 12:08:08,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4474de7f9/7afb86e81d584431b25893448bdaf80e/FLAG4de6ef3cf [2021-12-22 12:08:08,753 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:08:08,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-12-22 12:08:08,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4474de7f9/7afb86e81d584431b25893448bdaf80e/FLAG4de6ef3cf [2021-12-22 12:08:09,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4474de7f9/7afb86e81d584431b25893448bdaf80e [2021-12-22 12:08:09,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:08:09,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:08:09,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:08:09,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:08:09,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:08:09,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:08:09" (1/1) ... [2021-12-22 12:08:09,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e5b45db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:08:09, skipping insertion in model container [2021-12-22 12:08:09,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:08:09" (1/1) ... [2021-12-22 12:08:09,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:08:09,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:08:09,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7401,7414] [2021-12-22 12:08:09,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:08:09,466 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:08:09,507 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7401,7414] [2021-12-22 12:08:09,534 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:08:09,554 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:08:09,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:08:09 WrapperNode [2021-12-22 12:08:09,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:08:09,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:08:09,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:08:09,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:08:09,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:08:09" (1/1) ... [2021-12-22 12:08:09,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:08:09" (1/1) ... [2021-12-22 12:08:09,608 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 607 [2021-12-22 12:08:09,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:08:09,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:08:09,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:08:09,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:08:09,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:08:09" (1/1) ... [2021-12-22 12:08:09,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:08:09" (1/1) ... [2021-12-22 12:08:09,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:08:09" (1/1) ... [2021-12-22 12:08:09,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:08:09" (1/1) ... [2021-12-22 12:08:09,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:08:09" (1/1) ... [2021-12-22 12:08:09,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:08:09" (1/1) ... [2021-12-22 12:08:09,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:08:09" (1/1) ... [2021-12-22 12:08:09,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:08:09,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:08:09,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:08:09,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:08:09,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:08:09" (1/1) ... [2021-12-22 12:08:09,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:08:09,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:08:09,719 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) [2021-12-22 12:08:09,721 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 [2021-12-22 12:08:09,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:08:09,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:08:09,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:08:09,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:08:09,941 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:08:09,943 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:08:10,526 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:08:10,534 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:08:10,534 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 12:08:10,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:08:10 BoogieIcfgContainer [2021-12-22 12:08:10,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:08:10,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:08:10,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:08:10,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:08:10,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:08:09" (1/3) ... [2021-12-22 12:08:10,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4805ce94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:08:10, skipping insertion in model container [2021-12-22 12:08:10,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:08:09" (2/3) ... [2021-12-22 12:08:10,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4805ce94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:08:10, skipping insertion in model container [2021-12-22 12:08:10,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:08:10" (3/3) ... [2021-12-22 12:08:10,543 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-12-22 12:08:10,546 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:08:10,546 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 12:08:10,582 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:08:10,590 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 [2021-12-22 12:08:10,590 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 12:08:10,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 160 states, 158 states have (on average 1.7025316455696202) internal successors, (269), 159 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-22 12:08:10,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:08:10,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:08:10,620 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:08:10,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:08:10,624 INFO L85 PathProgramCache]: Analyzing trace with hash -539705947, now seen corresponding path program 1 times [2021-12-22 12:08:10,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:08:10,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899690517] [2021-12-22 12:08:10,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:08:10,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:08:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:08:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:08:10,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:08:10,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899690517] [2021-12-22 12:08:10,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899690517] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:08:10,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:08:10,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:08:10,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544738932] [2021-12-22 12:08:10,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:08:10,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:08:10,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:08:10,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:08:11,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:08:11,004 INFO L87 Difference]: Start difference. First operand has 160 states, 158 states have (on average 1.7025316455696202) internal successors, (269), 159 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:11,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:08:11,108 INFO L93 Difference]: Finished difference Result 376 states and 609 transitions. [2021-12-22 12:08:11,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:08:11,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-12-22 12:08:11,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:08:11,131 INFO L225 Difference]: With dead ends: 376 [2021-12-22 12:08:11,132 INFO L226 Difference]: Without dead ends: 254 [2021-12-22 12:08:11,135 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 [2021-12-22 12:08:11,138 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 198 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:08:11,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 576 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:08:11,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-12-22 12:08:11,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 252. [2021-12-22 12:08:11,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.49800796812749) internal successors, (376), 251 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 376 transitions. [2021-12-22 12:08:11,235 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 376 transitions. Word has length 73 [2021-12-22 12:08:11,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:08:11,236 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 376 transitions. [2021-12-22 12:08:11,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:11,238 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 376 transitions. [2021-12-22 12:08:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-22 12:08:11,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:08:11,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:08:11,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:08:11,242 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:08:11,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:08:11,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1913065188, now seen corresponding path program 1 times [2021-12-22 12:08:11,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:08:11,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293615318] [2021-12-22 12:08:11,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:08:11,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:08:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:08:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:08:11,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:08:11,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293615318] [2021-12-22 12:08:11,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293615318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:08:11,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:08:11,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:08:11,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311066655] [2021-12-22 12:08:11,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:08:11,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:08:11,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:08:11,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:08:11,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:08:11,411 INFO L87 Difference]: Start difference. First operand 252 states and 376 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:11,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:08:11,494 INFO L93 Difference]: Finished difference Result 636 states and 988 transitions. [2021-12-22 12:08:11,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:08:11,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-12-22 12:08:11,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:08:11,497 INFO L225 Difference]: With dead ends: 636 [2021-12-22 12:08:11,497 INFO L226 Difference]: Without dead ends: 428 [2021-12-22 12:08:11,498 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 [2021-12-22 12:08:11,499 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 159 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:08:11,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 504 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:08:11,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-12-22 12:08:11,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2021-12-22 12:08:11,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 1.536470588235294) internal successors, (653), 425 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 653 transitions. [2021-12-22 12:08:11,544 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 653 transitions. Word has length 74 [2021-12-22 12:08:11,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:08:11,545 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 653 transitions. [2021-12-22 12:08:11,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:11,545 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 653 transitions. [2021-12-22 12:08:11,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-22 12:08:11,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:08:11,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:08:11,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:08:11,555 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:08:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:08:11,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1816530126, now seen corresponding path program 1 times [2021-12-22 12:08:11,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:08:11,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711641378] [2021-12-22 12:08:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:08:11,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:08:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:08:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:08:11,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:08:11,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711641378] [2021-12-22 12:08:11,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711641378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:08:11,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:08:11,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:08:11,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440687591] [2021-12-22 12:08:11,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:08:11,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:08:11,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:08:11,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:08:11,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:08:11,683 INFO L87 Difference]: Start difference. First operand 426 states and 653 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:08:11,733 INFO L93 Difference]: Finished difference Result 1126 states and 1767 transitions. [2021-12-22 12:08:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:08:11,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-12-22 12:08:11,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:08:11,739 INFO L225 Difference]: With dead ends: 1126 [2021-12-22 12:08:11,739 INFO L226 Difference]: Without dead ends: 744 [2021-12-22 12:08:11,742 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 [2021-12-22 12:08:11,748 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 154 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:08:11,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 489 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:08:11,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-12-22 12:08:11,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 742. [2021-12-22 12:08:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 1.5560053981106612) internal successors, (1153), 741 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:11,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1153 transitions. [2021-12-22 12:08:11,804 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1153 transitions. Word has length 75 [2021-12-22 12:08:11,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:08:11,804 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1153 transitions. [2021-12-22 12:08:11,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:11,805 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1153 transitions. [2021-12-22 12:08:11,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-22 12:08:11,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:08:11,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:08:11,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:08:11,808 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:08:11,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:08:11,808 INFO L85 PathProgramCache]: Analyzing trace with hash 2133086223, now seen corresponding path program 1 times [2021-12-22 12:08:11,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:08:11,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48878743] [2021-12-22 12:08:11,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:08:11,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:08:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:08:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:08:11,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:08:11,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48878743] [2021-12-22 12:08:11,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48878743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:08:11,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:08:11,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:08:11,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673347720] [2021-12-22 12:08:11,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:08:11,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:08:11,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:08:11,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:08:11,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:08:11,906 INFO L87 Difference]: Start difference. First operand 742 states and 1153 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:12,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:08:12,013 INFO L93 Difference]: Finished difference Result 2010 states and 3163 transitions. [2021-12-22 12:08:12,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:08:12,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-12-22 12:08:12,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:08:12,022 INFO L225 Difference]: With dead ends: 2010 [2021-12-22 12:08:12,022 INFO L226 Difference]: Without dead ends: 1312 [2021-12-22 12:08:12,025 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 [2021-12-22 12:08:12,034 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 149 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:08:12,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 474 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:08:12,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-12-22 12:08:12,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2021-12-22 12:08:12,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1309 states have (on average 1.562261268143621) internal successors, (2045), 1309 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:12,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2045 transitions. [2021-12-22 12:08:12,132 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2045 transitions. Word has length 76 [2021-12-22 12:08:12,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:08:12,132 INFO L470 AbstractCegarLoop]: Abstraction has 1310 states and 2045 transitions. [2021-12-22 12:08:12,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:12,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2045 transitions. [2021-12-22 12:08:12,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-22 12:08:12,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:08:12,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:08:12,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:08:12,134 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:08:12,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:08:12,135 INFO L85 PathProgramCache]: Analyzing trace with hash 19574795, now seen corresponding path program 1 times [2021-12-22 12:08:12,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:08:12,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617169897] [2021-12-22 12:08:12,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:08:12,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:08:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:08:12,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:08:12,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:08:12,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617169897] [2021-12-22 12:08:12,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617169897] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:08:12,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:08:12,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:08:12,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615571314] [2021-12-22 12:08:12,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:08:12,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:08:12,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:08:12,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:08:12,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:08:12,181 INFO L87 Difference]: Start difference. First operand 1310 states and 2045 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:12,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:08:12,364 INFO L93 Difference]: Finished difference Result 3586 states and 5631 transitions. [2021-12-22 12:08:12,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:08:12,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-22 12:08:12,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:08:12,375 INFO L225 Difference]: With dead ends: 3586 [2021-12-22 12:08:12,375 INFO L226 Difference]: Without dead ends: 2320 [2021-12-22 12:08:12,377 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 [2021-12-22 12:08:12,377 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 144 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:08:12,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 459 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:08:12,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2021-12-22 12:08:12,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2318. [2021-12-22 12:08:12,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.5593439792835564) internal successors, (3613), 2317 states have internal predecessors, (3613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 3613 transitions. [2021-12-22 12:08:12,565 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 3613 transitions. Word has length 77 [2021-12-22 12:08:12,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:08:12,567 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 3613 transitions. [2021-12-22 12:08:12,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:12,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 3613 transitions. [2021-12-22 12:08:12,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-22 12:08:12,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:08:12,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:08:12,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:08:12,575 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:08:12,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:08:12,576 INFO L85 PathProgramCache]: Analyzing trace with hash 366454550, now seen corresponding path program 1 times [2021-12-22 12:08:12,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:08:12,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265388003] [2021-12-22 12:08:12,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:08:12,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:08:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:08:12,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:08:12,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:08:12,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265388003] [2021-12-22 12:08:12,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265388003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:08:12,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:08:12,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:08:12,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968335234] [2021-12-22 12:08:12,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:08:12,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 12:08:12,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:08:12,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 12:08:12,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:08:12,703 INFO L87 Difference]: Start difference. First operand 2318 states and 3613 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:14,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:08:14,180 INFO L93 Difference]: Finished difference Result 18236 states and 28596 transitions. [2021-12-22 12:08:14,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 12:08:14,180 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-12-22 12:08:14,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:08:14,251 INFO L225 Difference]: With dead ends: 18236 [2021-12-22 12:08:14,251 INFO L226 Difference]: Without dead ends: 15962 [2021-12-22 12:08:14,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-12-22 12:08:14,264 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 2490 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2490 SdHoareTripleChecker+Valid, 2941 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:08:14,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2490 Valid, 2941 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:08:14,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15962 states. [2021-12-22 12:08:14,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15962 to 4590. [2021-12-22 12:08:14,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4590 states, 4589 states have (on average 1.550882545216823) internal successors, (7117), 4589 states have internal predecessors, (7117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:14,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 7117 transitions. [2021-12-22 12:08:14,933 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 7117 transitions. Word has length 78 [2021-12-22 12:08:14,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:08:14,933 INFO L470 AbstractCegarLoop]: Abstraction has 4590 states and 7117 transitions. [2021-12-22 12:08:14,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:14,934 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 7117 transitions. [2021-12-22 12:08:14,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-22 12:08:14,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:08:14,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:08:14,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:08:14,936 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:08:14,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:08:14,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1544267032, now seen corresponding path program 1 times [2021-12-22 12:08:14,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:08:14,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464489134] [2021-12-22 12:08:14,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:08:14,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:08:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:08:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:08:15,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:08:15,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464489134] [2021-12-22 12:08:15,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464489134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:08:15,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:08:15,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:08:15,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309776164] [2021-12-22 12:08:15,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:08:15,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 12:08:15,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:08:15,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 12:08:15,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:08:15,096 INFO L87 Difference]: Start difference. First operand 4590 states and 7117 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:18,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:08:18,160 INFO L93 Difference]: Finished difference Result 28186 states and 43475 transitions. [2021-12-22 12:08:18,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 12:08:18,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-12-22 12:08:18,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:08:18,230 INFO L225 Difference]: With dead ends: 28186 [2021-12-22 12:08:18,231 INFO L226 Difference]: Without dead ends: 23640 [2021-12-22 12:08:18,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:08:18,247 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 1171 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:08:18,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 1532 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:08:18,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23640 states. [2021-12-22 12:08:20,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23640 to 23630. [2021-12-22 12:08:20,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23630 states, 23629 states have (on average 1.5376444199923822) internal successors, (36333), 23629 states have internal predecessors, (36333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23630 states to 23630 states and 36333 transitions. [2021-12-22 12:08:21,051 INFO L78 Accepts]: Start accepts. Automaton has 23630 states and 36333 transitions. Word has length 79 [2021-12-22 12:08:21,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:08:21,051 INFO L470 AbstractCegarLoop]: Abstraction has 23630 states and 36333 transitions. [2021-12-22 12:08:21,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:21,052 INFO L276 IsEmpty]: Start isEmpty. Operand 23630 states and 36333 transitions. [2021-12-22 12:08:21,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-22 12:08:21,054 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:08:21,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:08:21,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:08:21,055 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:08:21,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:08:21,055 INFO L85 PathProgramCache]: Analyzing trace with hash 750877787, now seen corresponding path program 1 times [2021-12-22 12:08:21,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:08:21,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154459225] [2021-12-22 12:08:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:08:21,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:08:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:08:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:08:21,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:08:21,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154459225] [2021-12-22 12:08:21,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154459225] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:08:21,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:08:21,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:08:21,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60456163] [2021-12-22 12:08:21,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:08:21,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:08:21,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:08:21,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:08:21,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:08:21,129 INFO L87 Difference]: Start difference. First operand 23630 states and 36333 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:25,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:08:25,460 INFO L93 Difference]: Finished difference Result 65810 states and 100847 transitions. [2021-12-22 12:08:25,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:08:25,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-12-22 12:08:25,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:08:25,685 INFO L225 Difference]: With dead ends: 65810 [2021-12-22 12:08:25,685 INFO L226 Difference]: Without dead ends: 42224 [2021-12-22 12:08:25,724 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 [2021-12-22 12:08:25,725 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 165 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:08:25,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 552 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:08:25,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42224 states. [2021-12-22 12:08:30,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42224 to 42222. [2021-12-22 12:08:30,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42222 states, 42221 states have (on average 1.519930840103266) internal successors, (64173), 42221 states have internal predecessors, (64173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:30,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42222 states to 42222 states and 64173 transitions. [2021-12-22 12:08:30,180 INFO L78 Accepts]: Start accepts. Automaton has 42222 states and 64173 transitions. Word has length 81 [2021-12-22 12:08:30,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:08:30,181 INFO L470 AbstractCegarLoop]: Abstraction has 42222 states and 64173 transitions. [2021-12-22 12:08:30,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:30,181 INFO L276 IsEmpty]: Start isEmpty. Operand 42222 states and 64173 transitions. [2021-12-22 12:08:30,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-22 12:08:30,182 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:08:30,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:08:30,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:08:30,183 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:08:30,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:08:30,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1649402545, now seen corresponding path program 1 times [2021-12-22 12:08:30,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:08:30,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501692044] [2021-12-22 12:08:30,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:08:30,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:08:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:08:30,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:08:30,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:08:30,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501692044] [2021-12-22 12:08:30,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501692044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:08:30,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:08:30,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:08:30,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783407571] [2021-12-22 12:08:30,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:08:30,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:08:30,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:08:30,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:08:30,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:08:30,258 INFO L87 Difference]: Start difference. First operand 42222 states and 64173 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:08:39,488 INFO L93 Difference]: Finished difference Result 126578 states and 192431 transitions. [2021-12-22 12:08:39,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:08:39,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-12-22 12:08:39,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:08:39,666 INFO L225 Difference]: With dead ends: 126578 [2021-12-22 12:08:39,667 INFO L226 Difference]: Without dead ends: 84400 [2021-12-22 12:08:39,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:08:39,744 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 953 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:08:39,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 260 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 12:08:39,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84400 states. [2021-12-22 12:08:48,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84400 to 84398. [2021-12-22 12:08:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84398 states, 84397 states have (on average 1.5126248563337559) internal successors, (127661), 84397 states have internal predecessors, (127661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:49,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84398 states to 84398 states and 127661 transitions. [2021-12-22 12:08:49,099 INFO L78 Accepts]: Start accepts. Automaton has 84398 states and 127661 transitions. Word has length 81 [2021-12-22 12:08:49,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:08:49,099 INFO L470 AbstractCegarLoop]: Abstraction has 84398 states and 127661 transitions. [2021-12-22 12:08:49,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:08:49,099 INFO L276 IsEmpty]: Start isEmpty. Operand 84398 states and 127661 transitions. [2021-12-22 12:08:49,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-22 12:08:49,101 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:08:49,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:08:49,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:08:49,101 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:08:49,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:08:49,102 INFO L85 PathProgramCache]: Analyzing trace with hash 252446614, now seen corresponding path program 1 times [2021-12-22 12:08:49,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:08:49,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672014803] [2021-12-22 12:08:49,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:08:49,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:08:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:08:49,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:08:49,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:08:49,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672014803] [2021-12-22 12:08:49,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672014803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:08:49,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:08:49,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:08:49,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380832746] [2021-12-22 12:08:49,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:08:49,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:08:49,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:08:49,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:08:49,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:08:49,199 INFO L87 Difference]: Start difference. First operand 84398 states and 127661 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)