./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/uthash-2.0.2/uthash_SAX_test2-2.i -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 d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 05:07:56,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 05:07:56,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 05:07:56,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 05:07:56,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 05:07:56,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 05:07:56,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 05:07:56,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 05:07:56,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 05:07:56,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 05:07:56,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 05:07:56,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 05:07:56,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 05:07:56,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 05:07:56,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 05:07:56,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 05:07:56,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 05:07:56,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 05:07:56,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 05:07:56,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 05:07:56,734 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 05:07:56,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 05:07:56,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 05:07:56,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 05:07:56,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 05:07:56,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 05:07:56,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 05:07:56,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 05:07:56,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 05:07:56,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 05:07:56,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 05:07:56,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 05:07:56,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 05:07:56,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 05:07:56,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 05:07:56,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 05:07:56,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 05:07:56,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 05:07:56,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 05:07:56,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 05:07:56,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 05:07:56,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 05:07:56,755 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-23 05:07:56,782 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 05:07:56,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 05:07:56,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 05:07:56,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 05:07:56,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 05:07:56,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 05:07:56,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 05:07:56,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 05:07:56,785 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 05:07:56,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 05:07:56,786 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 05:07:56,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 05:07:56,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 05:07:56,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 05:07:56,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 05:07:56,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 05:07:56,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 05:07:56,787 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 05:07:56,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 05:07:56,789 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 05:07:56,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 05:07:56,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 05:07:56,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 05:07:56,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 05:07:56,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:07:56,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 05:07:56,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 05:07:56,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 05:07:56,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 05:07:56,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 05:07:56,791 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 05:07:56,791 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 05:07:56,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 05:07:56,791 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d [2022-07-23 05:07:57,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 05:07:57,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 05:07:57,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 05:07:57,065 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 05:07:57,066 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 05:07:57,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2022-07-23 05:07:57,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/156f43f7f/1a384c0d36e543efa5a58522dcd8a520/FLAGfb944325b [2022-07-23 05:07:57,653 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 05:07:57,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2022-07-23 05:07:57,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/156f43f7f/1a384c0d36e543efa5a58522dcd8a520/FLAGfb944325b [2022-07-23 05:07:58,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/156f43f7f/1a384c0d36e543efa5a58522dcd8a520 [2022-07-23 05:07:58,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 05:07:58,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 05:07:58,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 05:07:58,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 05:07:58,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 05:07:58,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:07:58" (1/1) ... [2022-07-23 05:07:58,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a259200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:07:58, skipping insertion in model container [2022-07-23 05:07:58,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:07:58" (1/1) ... [2022-07-23 05:07:58,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 05:07:58,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 05:07:58,607 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/uthash-2.0.2/uthash_SAX_test2-2.i[37019,37032] [2022-07-23 05:07:58,720 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/uthash-2.0.2/uthash_SAX_test2-2.i[47352,47365] [2022-07-23 05:07:58,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:07:58,758 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 05:07:58,802 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/uthash-2.0.2/uthash_SAX_test2-2.i[37019,37032] [2022-07-23 05:07:58,845 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/uthash-2.0.2/uthash_SAX_test2-2.i[47352,47365] [2022-07-23 05:07:58,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:07:58,883 INFO L208 MainTranslator]: Completed translation [2022-07-23 05:07:58,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:07:58 WrapperNode [2022-07-23 05:07:58,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 05:07:58,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 05:07:58,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 05:07:58,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 05:07:58,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:07:58" (1/1) ... [2022-07-23 05:07:58,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:07:58" (1/1) ... [2022-07-23 05:07:58,974 INFO L137 Inliner]: procedures = 208, calls = 286, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1039 [2022-07-23 05:07:58,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 05:07:58,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 05:07:58,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 05:07:58,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 05:07:58,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:07:58" (1/1) ... [2022-07-23 05:07:58,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:07:58" (1/1) ... [2022-07-23 05:07:58,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:07:58" (1/1) ... [2022-07-23 05:07:59,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:07:58" (1/1) ... [2022-07-23 05:07:59,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:07:58" (1/1) ... [2022-07-23 05:07:59,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:07:58" (1/1) ... [2022-07-23 05:07:59,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:07:58" (1/1) ... [2022-07-23 05:07:59,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 05:07:59,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 05:07:59,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 05:07:59,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 05:07:59,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:07:58" (1/1) ... [2022-07-23 05:07:59,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:07:59,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:07:59,144 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) [2022-07-23 05:07:59,166 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 [2022-07-23 05:07:59,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-23 05:07:59,186 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-23 05:07:59,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 05:07:59,187 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-23 05:07:59,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 05:07:59,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 05:07:59,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-23 05:07:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-23 05:07:59,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-23 05:07:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-23 05:07:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 05:07:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 05:07:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 05:07:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 05:07:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 05:07:59,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 05:07:59,451 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 05:07:59,453 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 05:08:00,402 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 05:08:00,413 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 05:08:00,413 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2022-07-23 05:08:00,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:08:00 BoogieIcfgContainer [2022-07-23 05:08:00,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 05:08:00,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 05:08:00,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 05:08:00,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 05:08:00,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 05:07:58" (1/3) ... [2022-07-23 05:08:00,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2b0f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 05:08:00, skipping insertion in model container [2022-07-23 05:08:00,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:07:58" (2/3) ... [2022-07-23 05:08:00,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2b0f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 05:08:00, skipping insertion in model container [2022-07-23 05:08:00,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:08:00" (3/3) ... [2022-07-23 05:08:00,423 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test2-2.i [2022-07-23 05:08:00,435 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 05:08:00,435 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-23 05:08:00,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 05:08:00,509 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5a36ec2e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@9c2657b [2022-07-23 05:08:00,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-23 05:08:00,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 193 states have (on average 1.689119170984456) internal successors, (326), 200 states have internal predecessors, (326), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-23 05:08:00,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-23 05:08:00,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:08:00,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:08:00,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 05:08:00,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:08:00,528 INFO L85 PathProgramCache]: Analyzing trace with hash -858859523, now seen corresponding path program 1 times [2022-07-23 05:08:00,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:08:00,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272093817] [2022-07-23 05:08:00,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:00,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:08:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:08:00,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:08:00,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:08:00,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272093817] [2022-07-23 05:08:00,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272093817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:08:00,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:08:00,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:08:00,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902511441] [2022-07-23 05:08:00,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:08:00,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-23 05:08:00,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:08:00,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-23 05:08:00,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 05:08:00,693 INFO L87 Difference]: Start difference. First operand has 206 states, 193 states have (on average 1.689119170984456) internal successors, (326), 200 states have internal predecessors, (326), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:08:00,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:08:00,729 INFO L93 Difference]: Finished difference Result 410 states and 687 transitions. [2022-07-23 05:08:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 05:08:00,731 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-07-23 05:08:00,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:08:00,743 INFO L225 Difference]: With dead ends: 410 [2022-07-23 05:08:00,747 INFO L226 Difference]: Without dead ends: 173 [2022-07-23 05:08:00,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 05:08:00,760 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:08:00,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:08:00,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-23 05:08:00,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-23 05:08:00,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 161 states have (on average 1.3229813664596273) internal successors, (213), 167 states have internal predecessors, (213), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-23 05:08:00,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 229 transitions. [2022-07-23 05:08:00,813 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 229 transitions. Word has length 9 [2022-07-23 05:08:00,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:08:00,814 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 229 transitions. [2022-07-23 05:08:00,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:08:00,814 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 229 transitions. [2022-07-23 05:08:00,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-23 05:08:00,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:08:00,816 INFO L195 NwaCegarLoop]: 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] [2022-07-23 05:08:00,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 05:08:00,817 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 05:08:00,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:08:00,817 INFO L85 PathProgramCache]: Analyzing trace with hash -294026559, now seen corresponding path program 1 times [2022-07-23 05:08:00,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:08:00,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319491624] [2022-07-23 05:08:00,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:00,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:08:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:08:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:08:00,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:08:00,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319491624] [2022-07-23 05:08:00,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319491624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:08:00,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:08:00,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:08:00,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618744047] [2022-07-23 05:08:00,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:08:00,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:08:00,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:08:00,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:08:00,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:08:00,915 INFO L87 Difference]: Start difference. First operand 173 states and 229 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:08:01,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:08:01,336 INFO L93 Difference]: Finished difference Result 363 states and 489 transitions. [2022-07-23 05:08:01,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 05:08:01,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-07-23 05:08:01,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:08:01,340 INFO L225 Difference]: With dead ends: 363 [2022-07-23 05:08:01,340 INFO L226 Difference]: Without dead ends: 284 [2022-07-23 05:08:01,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:08:01,342 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 138 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 05:08:01,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 548 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 05:08:01,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-07-23 05:08:01,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 175. [2022-07-23 05:08:01,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 163 states have (on average 1.3190184049079754) internal successors, (215), 169 states have internal predecessors, (215), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-23 05:08:01,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 231 transitions. [2022-07-23 05:08:01,376 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 231 transitions. Word has length 44 [2022-07-23 05:08:01,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:08:01,377 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 231 transitions. [2022-07-23 05:08:01,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:08:01,378 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 231 transitions. [2022-07-23 05:08:01,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-23 05:08:01,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:08:01,381 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:08:01,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 05:08:01,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 05:08:01,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:08:01,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1509402797, now seen corresponding path program 1 times [2022-07-23 05:08:01,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:08:01,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554151343] [2022-07-23 05:08:01,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:01,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:08:01,558 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:08:01,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1002507831] [2022-07-23 05:08:01,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:01,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:01,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:08:01,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 05:08:01,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 05:08:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:08:02,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 05:08:02,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:08:02,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:08:02,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:08:02,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:08:02,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554151343] [2022-07-23 05:08:02,208 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:08:02,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002507831] [2022-07-23 05:08:02,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002507831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:08:02,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:08:02,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:08:02,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107206900] [2022-07-23 05:08:02,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:08:02,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:08:02,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:08:02,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:08:02,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:08:02,211 INFO L87 Difference]: Start difference. First operand 175 states and 231 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:08:02,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:08:02,269 INFO L93 Difference]: Finished difference Result 367 states and 489 transitions. [2022-07-23 05:08:02,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:08:02,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-07-23 05:08:02,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:08:02,271 INFO L225 Difference]: With dead ends: 367 [2022-07-23 05:08:02,271 INFO L226 Difference]: Without dead ends: 196 [2022-07-23 05:08:02,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:08:02,272 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 9 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:08:02,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 403 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:08:02,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-23 05:08:02,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2022-07-23 05:08:02,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 183 states have (on average 1.284153005464481) internal successors, (235), 189 states have internal predecessors, (235), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-23 05:08:02,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 251 transitions. [2022-07-23 05:08:02,282 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 251 transitions. Word has length 96 [2022-07-23 05:08:02,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:08:02,283 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 251 transitions. [2022-07-23 05:08:02,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:08:02,283 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 251 transitions. [2022-07-23 05:08:02,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-23 05:08:02,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:08:02,286 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:08:02,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-23 05:08:02,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:02,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 05:08:02,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:08:02,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1482337195, now seen corresponding path program 1 times [2022-07-23 05:08:02,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:08:02,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858049738] [2022-07-23 05:08:02,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:02,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:08:02,642 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:08:02,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061177616] [2022-07-23 05:08:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:02,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:02,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:08:02,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 05:08:02,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 05:08:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:08:03,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 05:08:03,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:08:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 05:08:03,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:08:03,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:08:03,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858049738] [2022-07-23 05:08:03,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:08:03,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061177616] [2022-07-23 05:08:03,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061177616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:08:03,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:08:03,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:08:03,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839756394] [2022-07-23 05:08:03,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:08:03,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:08:03,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:08:03,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:08:03,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:08:03,319 INFO L87 Difference]: Start difference. First operand 195 states and 251 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:08:03,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:08:03,373 INFO L93 Difference]: Finished difference Result 294 states and 388 transitions. [2022-07-23 05:08:03,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:08:03,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 96 [2022-07-23 05:08:03,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:08:03,377 INFO L225 Difference]: With dead ends: 294 [2022-07-23 05:08:03,377 INFO L226 Difference]: Without dead ends: 216 [2022-07-23 05:08:03,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:08:03,378 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 8 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:08:03,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 405 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:08:03,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-23 05:08:03,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2022-07-23 05:08:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 203 states have (on average 1.2561576354679802) internal successors, (255), 209 states have internal predecessors, (255), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-23 05:08:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 271 transitions. [2022-07-23 05:08:03,386 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 271 transitions. Word has length 96 [2022-07-23 05:08:03,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:08:03,387 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 271 transitions. [2022-07-23 05:08:03,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:08:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 271 transitions. [2022-07-23 05:08:03,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-23 05:08:03,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:08:03,389 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:08:03,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-23 05:08:03,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-23 05:08:03,600 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 05:08:03,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:08:03,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1801512851, now seen corresponding path program 1 times [2022-07-23 05:08:03,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:08:03,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570908513] [2022-07-23 05:08:03,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:03,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:08:03,722 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:08:03,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333693283] [2022-07-23 05:08:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:03,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:03,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:08:03,724 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 05:08:03,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 05:08:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:08:04,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 05:08:04,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:08:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:08:04,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:08:04,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:08:04,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570908513] [2022-07-23 05:08:04,485 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:08:04,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333693283] [2022-07-23 05:08:04,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333693283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:08:04,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:08:04,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:08:04,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630747517] [2022-07-23 05:08:04,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:08:04,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:08:04,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:08:04,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:08:04,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:08:04,487 INFO L87 Difference]: Start difference. First operand 215 states and 271 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:08:04,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:08:04,548 INFO L93 Difference]: Finished difference Result 418 states and 530 transitions. [2022-07-23 05:08:04,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 05:08:04,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-07-23 05:08:04,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:08:04,550 INFO L225 Difference]: With dead ends: 418 [2022-07-23 05:08:04,550 INFO L226 Difference]: Without dead ends: 207 [2022-07-23 05:08:04,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:08:04,552 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 192 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:08:04,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 431 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:08:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-07-23 05:08:04,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2022-07-23 05:08:04,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 189 states have (on average 1.2380952380952381) internal successors, (234), 195 states have internal predecessors, (234), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-23 05:08:04,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 250 transitions. [2022-07-23 05:08:04,559 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 250 transitions. Word has length 96 [2022-07-23 05:08:04,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:08:04,559 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 250 transitions. [2022-07-23 05:08:04,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:08:04,560 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 250 transitions. [2022-07-23 05:08:04,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-23 05:08:04,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:08:04,561 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:08:04,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-23 05:08:04,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:04,784 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 05:08:04,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:08:04,784 INFO L85 PathProgramCache]: Analyzing trace with hash 432355323, now seen corresponding path program 1 times [2022-07-23 05:08:04,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:08:04,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630249867] [2022-07-23 05:08:04,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:04,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:08:04,867 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:08:04,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476797527] [2022-07-23 05:08:04,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:04,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:04,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:08:04,869 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 05:08:04,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-23 05:08:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:08:05,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 05:08:05,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:08:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 05:08:05,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:08:05,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:08:05,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630249867] [2022-07-23 05:08:05,615 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:08:05,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476797527] [2022-07-23 05:08:05,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476797527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:08:05,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:08:05,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 05:08:05,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401654141] [2022-07-23 05:08:05,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:08:05,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 05:08:05,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:08:05,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 05:08:05,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:08:05,618 INFO L87 Difference]: Start difference. First operand 201 states and 250 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:08:05,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:08:05,693 INFO L93 Difference]: Finished difference Result 291 states and 368 transitions. [2022-07-23 05:08:05,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 05:08:05,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 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 96 [2022-07-23 05:08:05,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:08:05,695 INFO L225 Difference]: With dead ends: 291 [2022-07-23 05:08:05,695 INFO L226 Difference]: Without dead ends: 193 [2022-07-23 05:08:05,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:08:05,697 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 80 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:08:05,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 571 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:08:05,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-23 05:08:05,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2022-07-23 05:08:05,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 175 states have (on average 1.217142857142857) internal successors, (213), 181 states have internal predecessors, (213), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-23 05:08:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 229 transitions. [2022-07-23 05:08:05,703 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 229 transitions. Word has length 96 [2022-07-23 05:08:05,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:08:05,704 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 229 transitions. [2022-07-23 05:08:05,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:08:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 229 transitions. [2022-07-23 05:08:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-23 05:08:05,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:08:05,705 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:08:05,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-23 05:08:05,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:05,932 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 05:08:05,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:08:05,932 INFO L85 PathProgramCache]: Analyzing trace with hash -725253137, now seen corresponding path program 1 times [2022-07-23 05:08:05,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:08:05,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147957755] [2022-07-23 05:08:05,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:05,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:08:06,036 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:08:06,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768284327] [2022-07-23 05:08:06,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:06,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:06,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:08:06,038 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 05:08:06,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-23 05:08:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:08:06,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 05:08:06,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:08:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:08:06,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:08:06,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:08:06,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147957755] [2022-07-23 05:08:06,971 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:08:06,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768284327] [2022-07-23 05:08:06,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768284327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:08:06,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:08:06,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:08:06,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194839068] [2022-07-23 05:08:06,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:08:06,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:08:06,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:08:06,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:08:06,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:08:06,973 INFO L87 Difference]: Start difference. First operand 187 states and 229 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:08:07,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:08:07,027 INFO L93 Difference]: Finished difference Result 476 states and 582 transitions. [2022-07-23 05:08:07,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:08:07,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-07-23 05:08:07,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:08:07,029 INFO L225 Difference]: With dead ends: 476 [2022-07-23 05:08:07,029 INFO L226 Difference]: Without dead ends: 293 [2022-07-23 05:08:07,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:08:07,031 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 75 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:08:07,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 454 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:08:07,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-07-23 05:08:07,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 291. [2022-07-23 05:08:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 274 states have (on average 1.197080291970803) internal successors, (328), 285 states have internal predecessors, (328), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-23 05:08:07,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 354 transitions. [2022-07-23 05:08:07,041 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 354 transitions. Word has length 96 [2022-07-23 05:08:07,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:08:07,042 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 354 transitions. [2022-07-23 05:08:07,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:08:07,042 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 354 transitions. [2022-07-23 05:08:07,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-23 05:08:07,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:08:07,044 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:08:07,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-23 05:08:07,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:07,260 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 05:08:07,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:08:07,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2014363869, now seen corresponding path program 1 times [2022-07-23 05:08:07,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:08:07,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762905027] [2022-07-23 05:08:07,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:07,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:08:07,305 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:08:07,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13446453] [2022-07-23 05:08:07,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:07,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:07,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:08:07,307 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 05:08:07,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-23 05:08:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:08:07,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 05:08:07,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:08:08,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-23 05:08:08,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:08:08,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:08:08,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762905027] [2022-07-23 05:08:08,045 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:08:08,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13446453] [2022-07-23 05:08:08,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13446453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:08:08,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:08:08,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:08:08,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973433439] [2022-07-23 05:08:08,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:08:08,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:08:08,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:08:08,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:08:08,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:08:08,047 INFO L87 Difference]: Start difference. First operand 291 states and 354 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 05:08:08,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:08:08,222 INFO L93 Difference]: Finished difference Result 474 states and 579 transitions. [2022-07-23 05:08:08,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 05:08:08,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-07-23 05:08:08,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:08:08,224 INFO L225 Difference]: With dead ends: 474 [2022-07-23 05:08:08,224 INFO L226 Difference]: Without dead ends: 231 [2022-07-23 05:08:08,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:08:08,225 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 274 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:08:08,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 299 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:08:08,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-23 05:08:08,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-07-23 05:08:08,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 219 states have (on average 1.187214611872146) internal successors, (260), 225 states have internal predecessors, (260), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-23 05:08:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 276 transitions. [2022-07-23 05:08:08,232 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 276 transitions. Word has length 111 [2022-07-23 05:08:08,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:08:08,233 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 276 transitions. [2022-07-23 05:08:08,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 05:08:08,233 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 276 transitions. [2022-07-23 05:08:08,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-23 05:08:08,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:08:08,235 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:08:08,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-23 05:08:08,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:08,460 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 05:08:08,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:08:08,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1259218067, now seen corresponding path program 1 times [2022-07-23 05:08:08,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:08:08,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833782204] [2022-07-23 05:08:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:08,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:08:08,512 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:08:08,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244799516] [2022-07-23 05:08:08,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:08,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:08,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:08:08,514 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 05:08:08,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-23 05:08:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:08:17,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 05:08:17,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:08:17,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 05:08:17,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:08:17,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:08:17,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833782204] [2022-07-23 05:08:17,602 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:08:17,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244799516] [2022-07-23 05:08:17,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244799516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:08:17,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:08:17,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:08:17,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257071370] [2022-07-23 05:08:17,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:08:17,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:08:17,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:08:17,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:08:17,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:08:17,605 INFO L87 Difference]: Start difference. First operand 231 states and 276 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 05:08:17,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:08:17,642 INFO L93 Difference]: Finished difference Result 414 states and 501 transitions. [2022-07-23 05:08:17,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 05:08:17,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 118 [2022-07-23 05:08:17,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:08:17,648 INFO L225 Difference]: With dead ends: 414 [2022-07-23 05:08:17,648 INFO L226 Difference]: Without dead ends: 234 [2022-07-23 05:08:17,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:08:17,651 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 2 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:08:17,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 629 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:08:17,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-23 05:08:17,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2022-07-23 05:08:17,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 221 states have (on average 1.1900452488687783) internal successors, (263), 228 states have internal predecessors, (263), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-23 05:08:17,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 280 transitions. [2022-07-23 05:08:17,662 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 280 transitions. Word has length 118 [2022-07-23 05:08:17,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:08:17,662 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 280 transitions. [2022-07-23 05:08:17,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 05:08:17,663 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 280 transitions. [2022-07-23 05:08:17,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-23 05:08:17,664 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:08:17,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:08:17,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-23 05:08:17,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:17,865 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 05:08:17,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:08:17,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1061160779, now seen corresponding path program 1 times [2022-07-23 05:08:17,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:08:17,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041759148] [2022-07-23 05:08:17,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:17,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:08:17,912 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:08:17,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26028778] [2022-07-23 05:08:17,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:17,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:17,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:08:17,914 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 05:08:17,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-23 05:08:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:08:40,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 05:08:40,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:08:40,047 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 05:08:40,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:08:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 05:08:40,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:08:40,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041759148] [2022-07-23 05:08:40,134 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:08:40,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26028778] [2022-07-23 05:08:40,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26028778] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:08:40,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:08:40,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-23 05:08:40,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734770181] [2022-07-23 05:08:40,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:08:40,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 05:08:40,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:08:40,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 05:08:40,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:08:40,136 INFO L87 Difference]: Start difference. First operand 234 states and 280 transitions. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 05:08:40,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:08:40,235 INFO L93 Difference]: Finished difference Result 428 states and 523 transitions. [2022-07-23 05:08:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 05:08:40,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 120 [2022-07-23 05:08:40,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:08:40,237 INFO L225 Difference]: With dead ends: 428 [2022-07-23 05:08:40,237 INFO L226 Difference]: Without dead ends: 245 [2022-07-23 05:08:40,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-07-23 05:08:40,238 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 22 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:08:40,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 630 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:08:40,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-07-23 05:08:40,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 243. [2022-07-23 05:08:40,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 229 states have (on average 1.2096069868995634) internal successors, (277), 236 states have internal predecessors, (277), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (10), 4 states have call predecessors, (10), 8 states have call successors, (10) [2022-07-23 05:08:40,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 295 transitions. [2022-07-23 05:08:40,248 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 295 transitions. Word has length 120 [2022-07-23 05:08:40,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:08:40,248 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 295 transitions. [2022-07-23 05:08:40,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 05:08:40,248 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 295 transitions. [2022-07-23 05:08:40,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-23 05:08:40,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:08:40,250 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:08:40,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-23 05:08:40,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-23 05:08:40,464 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 05:08:40,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:08:40,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1709963501, now seen corresponding path program 2 times [2022-07-23 05:08:40,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:08:40,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15593607] [2022-07-23 05:08:40,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:40,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:08:40,506 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:08:40,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991965640] [2022-07-23 05:08:40,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 05:08:40,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:40,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:08:40,509 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 05:08:40,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-23 05:08:41,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 05:08:41,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:08:41,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-23 05:08:41,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:08:41,548 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-23 05:08:41,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:08:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-23 05:08:41,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:08:41,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15593607] [2022-07-23 05:08:41,713 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:08:41,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991965640] [2022-07-23 05:08:41,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991965640] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:08:41,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:08:41,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2022-07-23 05:08:41,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796402665] [2022-07-23 05:08:41,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:08:41,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-23 05:08:41,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:08:41,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-23 05:08:41,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-23 05:08:41,716 INFO L87 Difference]: Start difference. First operand 243 states and 295 transitions. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-23 05:08:42,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:08:42,031 INFO L93 Difference]: Finished difference Result 441 states and 541 transitions. [2022-07-23 05:08:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-23 05:08:42,032 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 124 [2022-07-23 05:08:42,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:08:42,033 INFO L225 Difference]: With dead ends: 441 [2022-07-23 05:08:42,033 INFO L226 Difference]: Without dead ends: 249 [2022-07-23 05:08:42,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2022-07-23 05:08:42,035 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 20 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:08:42,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1841 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:08:42,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-07-23 05:08:42,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 247. [2022-07-23 05:08:42,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 233 states have (on average 1.206008583690987) internal successors, (281), 240 states have internal predecessors, (281), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-23 05:08:42,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 298 transitions. [2022-07-23 05:08:42,048 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 298 transitions. Word has length 124 [2022-07-23 05:08:42,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:08:42,048 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 298 transitions. [2022-07-23 05:08:42,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-23 05:08:42,049 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 298 transitions. [2022-07-23 05:08:42,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-23 05:08:42,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:08:42,050 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:08:42,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-23 05:08:42,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:42,272 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 05:08:42,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:08:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1642585325, now seen corresponding path program 3 times [2022-07-23 05:08:42,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:08:42,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119017074] [2022-07-23 05:08:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:08:42,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:08:42,331 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:08:42,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232113543] [2022-07-23 05:08:42,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 05:08:42,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:08:42,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:08:42,333 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 05:08:42,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process