./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 ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.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-ae00767 [2021-12-28 01:27:52,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:27:52,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:27:52,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:27:52,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:27:52,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:27:52,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:27:52,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:27:52,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:27:52,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:27:52,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:27:52,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:27:52,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:27:52,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:27:52,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:27:52,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:27:52,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:27:52,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:27:52,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:27:52,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:27:52,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:27:52,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:27:52,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:27:52,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:27:52,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:27:52,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:27:52,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:27:52,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:27:52,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:27:52,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:27:52,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:27:52,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:27:52,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:27:52,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:27:52,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:27:52,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:27:52,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:27:52,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:27:52,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:27:52,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:27:52,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:27:52,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:27:52,835 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:27:52,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:27:52,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:27:52,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:27:52,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:27:52,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:27:52,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:27:52,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:27:52,839 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:27:52,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:27:52,840 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:27:52,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:27:52,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:27:52,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:27:52,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:27:52,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:27:52,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:27:52,842 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:27:52,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:27:52,842 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:27:52,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:27:52,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:27:52,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:27:52,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:27:52,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:27:52,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:27:52,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:27:52,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:27:52,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:27:52,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:27:52,852 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:27:52,852 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:27:52,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:27:52,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3302497ea925232664f79330834ccdc9bbd9e62586cb93dfb7cf8f1101390c2 [2021-12-28 01:27:53,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:27:53,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:27:53,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:27:53,195 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:27:53,196 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:27:53,197 INFO L432 ainManager$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 [2021-12-28 01:27:53,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d829580e6/a99eb1e2ed7a4cb0b2ce40bbccc94ed4/FLAGe3f20465f [2021-12-28 01:27:53,655 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:27:53,655 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 [2021-12-28 01:27:53,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d829580e6/a99eb1e2ed7a4cb0b2ce40bbccc94ed4/FLAGe3f20465f [2021-12-28 01:27:54,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d829580e6/a99eb1e2ed7a4cb0b2ce40bbccc94ed4 [2021-12-28 01:27:54,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:27:54,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:27:54,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:27:54,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:27:54,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:27:54,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:27:54" (1/1) ... [2021-12-28 01:27:54,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6722d090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:27:54, skipping insertion in model container [2021-12-28 01:27:54,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:27:54" (1/1) ... [2021-12-28 01:27:54,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:27:54,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:27:54,276 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] [2021-12-28 01:27:54,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:27:54,334 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:27:54,463 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] [2021-12-28 01:27:54,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:27:54,529 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:27:54,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:27:54 WrapperNode [2021-12-28 01:27:54,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:27:54,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:27:54,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:27:54,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:27:54,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:27:54" (1/1) ... [2021-12-28 01:27:54,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:27:54" (1/1) ... [2021-12-28 01:27:54,603 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 607 [2021-12-28 01:27:54,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:27:54,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:27:54,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:27:54,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:27:54,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:27:54" (1/1) ... [2021-12-28 01:27:54,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:27:54" (1/1) ... [2021-12-28 01:27:54,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:27:54" (1/1) ... [2021-12-28 01:27:54,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:27:54" (1/1) ... [2021-12-28 01:27:54,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:27:54" (1/1) ... [2021-12-28 01:27:54,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:27:54" (1/1) ... [2021-12-28 01:27:54,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:27:54" (1/1) ... [2021-12-28 01:27:54,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:27:54,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:27:54,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:27:54,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:27:54,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:27:54" (1/1) ... [2021-12-28 01:27:54,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:27:54,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:27:54,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 01:27:54,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 01:27:54,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:27:54,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:27:54,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:27:54,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:27:54,887 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:27:54,888 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:27:55,353 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:27:55,359 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:27:55,360 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 01:27:55,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:27:55 BoogieIcfgContainer [2021-12-28 01:27:55,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:27:55,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:27:55,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:27:55,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:27:55,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:27:54" (1/3) ... [2021-12-28 01:27:55,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152baa58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:27:55, skipping insertion in model container [2021-12-28 01:27:55,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:27:54" (2/3) ... [2021-12-28 01:27:55,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152baa58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:27:55, skipping insertion in model container [2021-12-28 01:27:55,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:27:55" (3/3) ... [2021-12-28 01:27:55,368 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-12-28 01:27:55,373 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:27:55,374 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 01:27:55,407 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:27:55,414 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 01:27:55,414 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 01:27:55,433 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) [2021-12-28 01:27:55,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-28 01:27:55,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:27:55,444 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] [2021-12-28 01:27:55,445 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:27:55,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:27:55,449 INFO L85 PathProgramCache]: Analyzing trace with hash -539705947, now seen corresponding path program 1 times [2021-12-28 01:27:55,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:27:55,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839921923] [2021-12-28 01:27:55,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:27:55,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:27:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:27:55,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:27:55,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:27:55,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839921923] [2021-12-28 01:27:55,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839921923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:27:55,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:27:55,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:27:55,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052069048] [2021-12-28 01:27:55,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:27:55,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:27:55,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:27:55,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:27:55,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:27:55,873 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) [2021-12-28 01:27:55,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:27:55,976 INFO L93 Difference]: Finished difference Result 376 states and 609 transitions. [2021-12-28 01:27:55,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:27:55,979 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 [2021-12-28 01:27:55,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:27:55,995 INFO L225 Difference]: With dead ends: 376 [2021-12-28 01:27:55,995 INFO L226 Difference]: Without dead ends: 254 [2021-12-28 01:27:55,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:27:56,003 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 [2021-12-28 01:27:56,004 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] [2021-12-28 01:27:56,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-12-28 01:27:56,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 252. [2021-12-28 01:27:56,053 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) [2021-12-28 01:27:56,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 376 transitions. [2021-12-28 01:27:56,055 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 376 transitions. Word has length 73 [2021-12-28 01:27:56,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:27:56,055 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 376 transitions. [2021-12-28 01:27:56,055 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) [2021-12-28 01:27:56,056 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 376 transitions. [2021-12-28 01:27:56,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-28 01:27:56,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:27:56,058 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] [2021-12-28 01:27:56,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:27:56,059 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:27:56,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:27:56,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1913065188, now seen corresponding path program 1 times [2021-12-28 01:27:56,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:27:56,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975308336] [2021-12-28 01:27:56,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:27:56,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:27:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:27:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:27:56,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:27:56,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975308336] [2021-12-28 01:27:56,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975308336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:27:56,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:27:56,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:27:56,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684377742] [2021-12-28 01:27:56,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:27:56,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:27:56,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:27:56,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:27:56,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:27:56,199 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) [2021-12-28 01:27:56,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:27:56,256 INFO L93 Difference]: Finished difference Result 636 states and 988 transitions. [2021-12-28 01:27:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:27:56,257 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 [2021-12-28 01:27:56,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:27:56,261 INFO L225 Difference]: With dead ends: 636 [2021-12-28 01:27:56,261 INFO L226 Difference]: Without dead ends: 428 [2021-12-28 01:27:56,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:27:56,270 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 [2021-12-28 01:27:56,271 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] [2021-12-28 01:27:56,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-12-28 01:27:56,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2021-12-28 01:27:56,322 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) [2021-12-28 01:27:56,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 653 transitions. [2021-12-28 01:27:56,323 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 653 transitions. Word has length 74 [2021-12-28 01:27:56,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:27:56,324 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 653 transitions. [2021-12-28 01:27:56,324 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) [2021-12-28 01:27:56,324 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 653 transitions. [2021-12-28 01:27:56,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-28 01:27:56,326 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:27:56,326 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] [2021-12-28 01:27:56,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:27:56,327 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:27:56,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:27:56,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1816530126, now seen corresponding path program 1 times [2021-12-28 01:27:56,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:27:56,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803856011] [2021-12-28 01:27:56,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:27:56,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:27:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:27:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:27:56,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:27:56,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803856011] [2021-12-28 01:27:56,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803856011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:27:56,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:27:56,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:27:56,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796615433] [2021-12-28 01:27:56,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:27:56,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:27:56,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:27:56,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:27:56,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:27:56,434 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) [2021-12-28 01:27:56,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:27:56,488 INFO L93 Difference]: Finished difference Result 1126 states and 1767 transitions. [2021-12-28 01:27:56,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:27:56,489 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 [2021-12-28 01:27:56,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:27:56,494 INFO L225 Difference]: With dead ends: 1126 [2021-12-28 01:27:56,495 INFO L226 Difference]: Without dead ends: 744 [2021-12-28 01:27:56,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:27:56,497 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 [2021-12-28 01:27:56,497 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] [2021-12-28 01:27:56,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-12-28 01:27:56,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 742. [2021-12-28 01:27:56,540 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) [2021-12-28 01:27:56,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1153 transitions. [2021-12-28 01:27:56,543 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1153 transitions. Word has length 75 [2021-12-28 01:27:56,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:27:56,544 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1153 transitions. [2021-12-28 01:27:56,544 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) [2021-12-28 01:27:56,544 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1153 transitions. [2021-12-28 01:27:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-28 01:27:56,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:27:56,550 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] [2021-12-28 01:27:56,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:27:56,550 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:27:56,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:27:56,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2133086223, now seen corresponding path program 1 times [2021-12-28 01:27:56,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:27:56,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20286059] [2021-12-28 01:27:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:27:56,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:27:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:27:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:27:56,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:27:56,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20286059] [2021-12-28 01:27:56,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20286059] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:27:56,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:27:56,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:27:56,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727354480] [2021-12-28 01:27:56,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:27:56,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:27:56,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:27:56,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:27:56,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:27:56,663 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) [2021-12-28 01:27:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:27:56,740 INFO L93 Difference]: Finished difference Result 2010 states and 3163 transitions. [2021-12-28 01:27:56,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:27:56,741 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 [2021-12-28 01:27:56,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:27:56,748 INFO L225 Difference]: With dead ends: 2010 [2021-12-28 01:27:56,749 INFO L226 Difference]: Without dead ends: 1312 [2021-12-28 01:27:56,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:27:56,761 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 [2021-12-28 01:27:56,762 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] [2021-12-28 01:27:56,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-12-28 01:27:56,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2021-12-28 01:27:56,834 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) [2021-12-28 01:27:56,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2045 transitions. [2021-12-28 01:27:56,838 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2045 transitions. Word has length 76 [2021-12-28 01:27:56,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:27:56,838 INFO L470 AbstractCegarLoop]: Abstraction has 1310 states and 2045 transitions. [2021-12-28 01:27:56,839 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) [2021-12-28 01:27:56,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2045 transitions. [2021-12-28 01:27:56,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-28 01:27:56,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:27:56,841 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] [2021-12-28 01:27:56,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:27:56,842 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:27:56,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:27:56,842 INFO L85 PathProgramCache]: Analyzing trace with hash 19574795, now seen corresponding path program 1 times [2021-12-28 01:27:56,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:27:56,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438707248] [2021-12-28 01:27:56,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:27:56,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:27:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:27:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:27:56,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:27:56,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438707248] [2021-12-28 01:27:56,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438707248] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:27:56,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:27:56,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:27:56,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123750880] [2021-12-28 01:27:56,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:27:56,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:27:56,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:27:56,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:27:56,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:27:56,920 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) [2021-12-28 01:27:57,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:27:57,059 INFO L93 Difference]: Finished difference Result 3586 states and 5631 transitions. [2021-12-28 01:27:57,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:27:57,060 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 [2021-12-28 01:27:57,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:27:57,072 INFO L225 Difference]: With dead ends: 3586 [2021-12-28 01:27:57,073 INFO L226 Difference]: Without dead ends: 2320 [2021-12-28 01:27:57,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:27:57,075 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 [2021-12-28 01:27:57,076 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] [2021-12-28 01:27:57,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2021-12-28 01:27:57,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2318. [2021-12-28 01:27:57,206 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) [2021-12-28 01:27:57,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 3613 transitions. [2021-12-28 01:27:57,213 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 3613 transitions. Word has length 77 [2021-12-28 01:27:57,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:27:57,214 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 3613 transitions. [2021-12-28 01:27:57,214 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) [2021-12-28 01:27:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 3613 transitions. [2021-12-28 01:27:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-28 01:27:57,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:27:57,215 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] [2021-12-28 01:27:57,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:27:57,216 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:27:57,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:27:57,216 INFO L85 PathProgramCache]: Analyzing trace with hash 366454550, now seen corresponding path program 1 times [2021-12-28 01:27:57,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:27:57,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633813229] [2021-12-28 01:27:57,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:27:57,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:27:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:27:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:27:57,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:27:57,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633813229] [2021-12-28 01:27:57,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633813229] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:27:57,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:27:57,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 01:27:57,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863486575] [2021-12-28 01:27:57,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:27:57,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 01:27:57,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:27:57,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 01:27:57,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 01:27:57,300 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) [2021-12-28 01:27:58,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:27:58,560 INFO L93 Difference]: Finished difference Result 18236 states and 28596 transitions. [2021-12-28 01:27:58,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 01:27:58,561 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 [2021-12-28 01:27:58,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:27:58,629 INFO L225 Difference]: With dead ends: 18236 [2021-12-28 01:27:58,630 INFO L226 Difference]: Without dead ends: 15962 [2021-12-28 01:27:58,638 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 [2021-12-28 01:27:58,639 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 [2021-12-28 01:27:58,640 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] [2021-12-28 01:27:58,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15962 states. [2021-12-28 01:27:59,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15962 to 4590. [2021-12-28 01:27:59,278 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) [2021-12-28 01:27:59,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 7117 transitions. [2021-12-28 01:27:59,293 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 7117 transitions. Word has length 78 [2021-12-28 01:27:59,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:27:59,294 INFO L470 AbstractCegarLoop]: Abstraction has 4590 states and 7117 transitions. [2021-12-28 01:27:59,294 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) [2021-12-28 01:27:59,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 7117 transitions. [2021-12-28 01:27:59,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-28 01:27:59,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:27:59,295 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] [2021-12-28 01:27:59,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:27:59,296 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:27:59,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:27:59,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1544267032, now seen corresponding path program 1 times [2021-12-28 01:27:59,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:27:59,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920855715] [2021-12-28 01:27:59,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:27:59,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:27:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:27:59,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:27:59,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:27:59,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920855715] [2021-12-28 01:27:59,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920855715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:27:59,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:27:59,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 01:27:59,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745887923] [2021-12-28 01:27:59,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:27:59,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 01:27:59,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:27:59,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 01:27:59,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-28 01:27:59,493 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) [2021-12-28 01:28:02,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:28:02,393 INFO L93 Difference]: Finished difference Result 28186 states and 43475 transitions. [2021-12-28 01:28:02,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 01:28:02,394 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 [2021-12-28 01:28:02,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:28:02,455 INFO L225 Difference]: With dead ends: 28186 [2021-12-28 01:28:02,456 INFO L226 Difference]: Without dead ends: 23640 [2021-12-28 01:28:02,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-28 01:28:02,471 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 [2021-12-28 01:28:02,472 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] [2021-12-28 01:28:02,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23640 states. [2021-12-28 01:28:04,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23640 to 23630. [2021-12-28 01:28:04,922 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) [2021-12-28 01:28:04,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23630 states to 23630 states and 36333 transitions. [2021-12-28 01:28:04,985 INFO L78 Accepts]: Start accepts. Automaton has 23630 states and 36333 transitions. Word has length 79 [2021-12-28 01:28:04,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:28:04,985 INFO L470 AbstractCegarLoop]: Abstraction has 23630 states and 36333 transitions. [2021-12-28 01:28:04,985 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) [2021-12-28 01:28:04,985 INFO L276 IsEmpty]: Start isEmpty. Operand 23630 states and 36333 transitions. [2021-12-28 01:28:04,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-28 01:28:04,987 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:28:04,987 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] [2021-12-28 01:28:04,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:28:04,987 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:28:04,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:28:04,988 INFO L85 PathProgramCache]: Analyzing trace with hash 750877787, now seen corresponding path program 1 times [2021-12-28 01:28:04,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:28:04,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783128765] [2021-12-28 01:28:04,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:28:04,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:28:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:28:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:28:05,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:28:05,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783128765] [2021-12-28 01:28:05,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783128765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:28:05,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:28:05,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:28:05,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530480858] [2021-12-28 01:28:05,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:28:05,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:28:05,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:28:05,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:28:05,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:28:05,047 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) [2021-12-28 01:28:09,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:28:09,015 INFO L93 Difference]: Finished difference Result 65810 states and 100847 transitions. [2021-12-28 01:28:09,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:28:09,016 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 [2021-12-28 01:28:09,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:28:09,251 INFO L225 Difference]: With dead ends: 65810 [2021-12-28 01:28:09,252 INFO L226 Difference]: Without dead ends: 42224 [2021-12-28 01:28:09,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:28:09,300 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 [2021-12-28 01:28:09,300 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] [2021-12-28 01:28:09,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42224 states. [2021-12-28 01:28:13,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42224 to 42222. [2021-12-28 01:28:13,574 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) [2021-12-28 01:28:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42222 states to 42222 states and 64173 transitions. [2021-12-28 01:28:13,666 INFO L78 Accepts]: Start accepts. Automaton has 42222 states and 64173 transitions. Word has length 81 [2021-12-28 01:28:13,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:28:13,667 INFO L470 AbstractCegarLoop]: Abstraction has 42222 states and 64173 transitions. [2021-12-28 01:28:13,668 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) [2021-12-28 01:28:13,668 INFO L276 IsEmpty]: Start isEmpty. Operand 42222 states and 64173 transitions. [2021-12-28 01:28:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-28 01:28:13,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:28:13,669 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] [2021-12-28 01:28:13,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:28:13,669 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:28:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:28:13,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1649402545, now seen corresponding path program 1 times [2021-12-28 01:28:13,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:28:13,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948339165] [2021-12-28 01:28:13,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:28:13,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:28:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:28:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:28:13,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:28:13,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948339165] [2021-12-28 01:28:13,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948339165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:28:13,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:28:13,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:28:13,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928424333] [2021-12-28 01:28:13,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:28:13,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:28:13,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:28:13,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:28:13,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:28:13,737 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) [2021-12-28 01:28:22,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:28:22,741 INFO L93 Difference]: Finished difference Result 126578 states and 192431 transitions. [2021-12-28 01:28:22,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:28:22,741 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 [2021-12-28 01:28:22,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:28:22,911 INFO L225 Difference]: With dead ends: 126578 [2021-12-28 01:28:22,912 INFO L226 Difference]: Without dead ends: 84400 [2021-12-28 01:28:22,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:28:22,954 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 953 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2021-12-28 01:28:22,954 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] [2021-12-28 01:28:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84400 states. [2021-12-28 01:28:31,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84400 to 84398. [2021-12-28 01:28:31,506 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) [2021-12-28 01:28:31,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84398 states to 84398 states and 127661 transitions. [2021-12-28 01:28:31,720 INFO L78 Accepts]: Start accepts. Automaton has 84398 states and 127661 transitions. Word has length 81 [2021-12-28 01:28:31,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:28:31,720 INFO L470 AbstractCegarLoop]: Abstraction has 84398 states and 127661 transitions. [2021-12-28 01:28:31,721 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) [2021-12-28 01:28:31,721 INFO L276 IsEmpty]: Start isEmpty. Operand 84398 states and 127661 transitions. [2021-12-28 01:28:31,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-28 01:28:31,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:28:31,722 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] [2021-12-28 01:28:31,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:28:31,722 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:28:31,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:28:31,723 INFO L85 PathProgramCache]: Analyzing trace with hash 252446614, now seen corresponding path program 1 times [2021-12-28 01:28:31,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:28:31,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473735400] [2021-12-28 01:28:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:28:31,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:28:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:28:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:28:31,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:28:31,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473735400] [2021-12-28 01:28:31,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473735400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:28:31,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:28:31,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:28:31,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592442028] [2021-12-28 01:28:31,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:28:31,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:28:31,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:28:31,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:28:31,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:28:31,820 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)