./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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_BER_test4-3.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 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-06 00:14:31,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 00:14:31,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 00:14:31,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 00:14:31,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 00:14:31,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 00:14:31,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 00:14:31,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 00:14:31,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 00:14:31,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 00:14:31,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 00:14:31,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 00:14:31,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 00:14:31,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 00:14:31,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 00:14:31,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 00:14:31,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 00:14:31,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 00:14:31,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 00:14:31,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 00:14:31,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 00:14:31,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 00:14:31,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 00:14:31,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 00:14:31,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 00:14:31,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 00:14:31,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 00:14:31,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 00:14:31,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 00:14:31,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 00:14:31,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 00:14:31,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 00:14:31,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 00:14:31,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 00:14:31,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 00:14:31,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 00:14:31,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 00:14:31,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 00:14:31,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 00:14:31,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 00:14:31,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 00:14:31,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-06 00:14:31,872 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 00:14:31,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 00:14:31,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 00:14:31,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 00:14:31,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 00:14:31,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 00:14:31,876 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 00:14:31,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 00:14:31,877 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 00:14:31,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 00:14:31,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 00:14:31,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 00:14:31,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 00:14:31,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 00:14:31,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 00:14:31,878 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 00:14:31,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 00:14:31,878 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 00:14:31,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 00:14:31,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 00:14:31,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 00:14:31,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 00:14:31,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 00:14:31,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 00:14:31,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 00:14:31,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 00:14:31,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 00:14:31,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 00:14:31,890 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 00:14:31,890 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 00:14:31,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 00:14:31,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 00:14:31,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 [2021-11-06 00:14:32,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 00:14:32,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 00:14:32,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 00:14:32,165 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 00:14:32,175 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 00:14:32,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2021-11-06 00:14:32,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b9eb3bf3/ead22eb1ae8b44bda66ec0c28c5e033e/FLAG15804f4c9 [2021-11-06 00:14:32,673 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 00:14:32,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2021-11-06 00:14:32,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b9eb3bf3/ead22eb1ae8b44bda66ec0c28c5e033e/FLAG15804f4c9 [2021-11-06 00:14:33,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b9eb3bf3/ead22eb1ae8b44bda66ec0c28c5e033e [2021-11-06 00:14:33,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 00:14:33,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 00:14:33,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 00:14:33,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 00:14:33,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 00:14:33,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 12:14:33" (1/1) ... [2021-11-06 00:14:33,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f51dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:14:33, skipping insertion in model container [2021-11-06 00:14:33,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 12:14:33" (1/1) ... [2021-11-06 00:14:33,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 00:14:33,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 00:14:33,364 WARN L228 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_BER_test4-3.i[33021,33034] [2021-11-06 00:14:33,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 00:14:33,482 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 00:14:33,499 WARN L228 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_BER_test4-3.i[33021,33034] [2021-11-06 00:14:33,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 00:14:33,590 INFO L208 MainTranslator]: Completed translation [2021-11-06 00:14:33,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:14:33 WrapperNode [2021-11-06 00:14:33,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 00:14:33,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 00:14:33,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 00:14:33,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 00:14:33,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:14:33" (1/1) ... [2021-11-06 00:14:33,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:14:33" (1/1) ... [2021-11-06 00:14:33,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 00:14:33,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 00:14:33,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 00:14:33,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 00:14:33,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:14:33" (1/1) ... [2021-11-06 00:14:33,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:14:33" (1/1) ... [2021-11-06 00:14:33,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:14:33" (1/1) ... [2021-11-06 00:14:33,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:14:33" (1/1) ... [2021-11-06 00:14:33,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:14:33" (1/1) ... [2021-11-06 00:14:33,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:14:33" (1/1) ... [2021-11-06 00:14:33,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:14:33" (1/1) ... [2021-11-06 00:14:33,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 00:14:33,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 00:14:33,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 00:14:33,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 00:14:33,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:14:33" (1/1) ... [2021-11-06 00:14:33,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 00:14:33,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 00:14:33,850 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 00:14:33,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 00:14:33,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 00:14:33,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 00:14:33,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 00:14:33,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 00:14:33,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 00:14:33,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 00:14:33,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 00:14:33,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 00:14:33,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 00:14:33,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 00:14:34,938 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 00:14:34,939 INFO L299 CfgBuilder]: Removed 115 assume(true) statements. [2021-11-06 00:14:34,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:14:34 BoogieIcfgContainer [2021-11-06 00:14:34,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 00:14:34,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 00:14:34,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 00:14:34,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 00:14:34,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 12:14:33" (1/3) ... [2021-11-06 00:14:34,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7572c4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 12:14:34, skipping insertion in model container [2021-11-06 00:14:34,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:14:33" (2/3) ... [2021-11-06 00:14:34,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7572c4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 12:14:34, skipping insertion in model container [2021-11-06 00:14:34,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:14:34" (3/3) ... [2021-11-06 00:14:34,952 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-3.i [2021-11-06 00:14:34,955 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 00:14:34,956 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-06 00:14:34,992 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 00:14:34,996 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 00:14:34,996 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-06 00:14:35,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 260 states have (on average 1.726923076923077) internal successors, (449), 270 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 00:14:35,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 00:14:35,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 00:14:35,026 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 00:14:35,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 00:14:35,034 INFO L85 PathProgramCache]: Analyzing trace with hash 889550569, now seen corresponding path program 1 times [2021-11-06 00:14:35,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 00:14:35,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600356162] [2021-11-06 00:14:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:35,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 00:14:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 00:14:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 00:14:35,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 00:14:35,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600356162] [2021-11-06 00:14:35,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600356162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 00:14:35,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 00:14:35,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 00:14:35,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270895702] [2021-11-06 00:14:35,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 00:14:35,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 00:14:35,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 00:14:35,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 00:14:35,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 00:14:35,187 INFO L87 Difference]: Start difference. First operand has 271 states, 260 states have (on average 1.726923076923077) internal successors, (449), 270 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:35,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 00:14:35,233 INFO L93 Difference]: Finished difference Result 540 states and 896 transitions. [2021-11-06 00:14:35,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 00:14:35,234 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-11-06 00:14:35,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 00:14:35,245 INFO L225 Difference]: With dead ends: 540 [2021-11-06 00:14:35,246 INFO L226 Difference]: Without dead ends: 217 [2021-11-06 00:14:35,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 00:14:35,254 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.08ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-06 00:14:35,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 4.08ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-06 00:14:35,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-06 00:14:35,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-06 00:14:35,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 207 states have (on average 1.3623188405797102) internal successors, (282), 216 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 282 transitions. [2021-11-06 00:14:35,300 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 282 transitions. Word has length 8 [2021-11-06 00:14:35,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 00:14:35,300 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 282 transitions. [2021-11-06 00:14:35,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:35,301 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 282 transitions. [2021-11-06 00:14:35,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 00:14:35,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 00:14:35,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 00:14:35,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 00:14:35,302 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 00:14:35,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 00:14:35,304 INFO L85 PathProgramCache]: Analyzing trace with hash 921152950, now seen corresponding path program 1 times [2021-11-06 00:14:35,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 00:14:35,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084371718] [2021-11-06 00:14:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:35,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 00:14:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 00:14:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 00:14:35,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 00:14:35,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084371718] [2021-11-06 00:14:35,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084371718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 00:14:35,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 00:14:35,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 00:14:35,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540982872] [2021-11-06 00:14:35,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 00:14:35,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 00:14:35,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 00:14:35,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 00:14:35,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 00:14:35,397 INFO L87 Difference]: Start difference. First operand 217 states and 282 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 00:14:35,431 INFO L93 Difference]: Finished difference Result 432 states and 562 transitions. [2021-11-06 00:14:35,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 00:14:35,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-11-06 00:14:35,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 00:14:35,434 INFO L225 Difference]: With dead ends: 432 [2021-11-06 00:14:35,434 INFO L226 Difference]: Without dead ends: 387 [2021-11-06 00:14:35,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 00:14:35,438 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 223 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.07ms IncrementalHoareTripleChecker+Time [2021-11-06 00:14:35,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 556 Invalid, 7 Unknown, 0 Unchecked, 3.45ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 10.07ms Time] [2021-11-06 00:14:35,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-06 00:14:35,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 218. [2021-11-06 00:14:35,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 208 states have (on average 1.3605769230769231) internal successors, (283), 217 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:35,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 283 transitions. [2021-11-06 00:14:35,449 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 283 transitions. Word has length 8 [2021-11-06 00:14:35,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 00:14:35,449 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 283 transitions. [2021-11-06 00:14:35,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:35,449 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 283 transitions. [2021-11-06 00:14:35,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 00:14:35,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 00:14:35,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 00:14:35,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 00:14:35,452 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 00:14:35,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 00:14:35,453 INFO L85 PathProgramCache]: Analyzing trace with hash -137963571, now seen corresponding path program 1 times [2021-11-06 00:14:35,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 00:14:35,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418813452] [2021-11-06 00:14:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:35,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 00:14:35,469 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 00:14:35,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119920116] [2021-11-06 00:14:35,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:35,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 00:14:35,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 00:14:35,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 00:14:35,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 00:14:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 00:14:35,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 00:14:35,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 00:14:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 00:14:35,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 00:14:35,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 00:14:35,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418813452] [2021-11-06 00:14:35,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 00:14:35,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119920116] [2021-11-06 00:14:35,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119920116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 00:14:35,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 00:14:35,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 00:14:35,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918451486] [2021-11-06 00:14:35,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 00:14:35,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 00:14:35,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 00:14:35,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 00:14:35,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 00:14:35,931 INFO L87 Difference]: Start difference. First operand 218 states and 283 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:35,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 00:14:35,995 INFO L93 Difference]: Finished difference Result 454 states and 594 transitions. [2021-11-06 00:14:35,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 00:14:35,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-06 00:14:35,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 00:14:35,997 INFO L225 Difference]: With dead ends: 454 [2021-11-06 00:14:35,997 INFO L226 Difference]: Without dead ends: 239 [2021-11-06 00:14:35,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 00:14:35,998 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 9 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.30ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.17ms IncrementalHoareTripleChecker+Time [2021-11-06 00:14:35,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 509 Invalid, 72 Unknown, 0 Unchecked, 1.30ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 57.17ms Time] [2021-11-06 00:14:36,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-06 00:14:36,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-11-06 00:14:36,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 228 states have (on average 1.3289473684210527) internal successors, (303), 237 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:36,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 303 transitions. [2021-11-06 00:14:36,006 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 303 transitions. Word has length 106 [2021-11-06 00:14:36,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 00:14:36,006 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 303 transitions. [2021-11-06 00:14:36,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 303 transitions. [2021-11-06 00:14:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 00:14:36,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 00:14:36,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 00:14:36,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 00:14:36,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 00:14:36,227 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 00:14:36,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 00:14:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash 62310097, now seen corresponding path program 1 times [2021-11-06 00:14:36,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 00:14:36,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725973474] [2021-11-06 00:14:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:36,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 00:14:36,241 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 00:14:36,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019603039] [2021-11-06 00:14:36,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:36,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 00:14:36,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 00:14:36,244 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 00:14:36,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 00:14:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 00:14:36,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 00:14:36,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 00:14:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 00:14:36,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 00:14:36,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 00:14:36,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725973474] [2021-11-06 00:14:36,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 00:14:36,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019603039] [2021-11-06 00:14:36,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019603039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 00:14:36,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 00:14:36,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 00:14:36,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062417120] [2021-11-06 00:14:36,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 00:14:36,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 00:14:36,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 00:14:36,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 00:14:36,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 00:14:36,621 INFO L87 Difference]: Start difference. First operand 238 states and 303 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:36,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 00:14:36,659 INFO L93 Difference]: Finished difference Result 494 states and 634 transitions. [2021-11-06 00:14:36,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 00:14:36,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-06 00:14:36,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 00:14:36,661 INFO L225 Difference]: With dead ends: 494 [2021-11-06 00:14:36,661 INFO L226 Difference]: Without dead ends: 259 [2021-11-06 00:14:36,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 00:14:36,662 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 9 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.10ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.30ms IncrementalHoareTripleChecker+Time [2021-11-06 00:14:36,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 509 Invalid, 72 Unknown, 0 Unchecked, 1.10ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 33.30ms Time] [2021-11-06 00:14:36,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-06 00:14:36,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2021-11-06 00:14:36,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 248 states have (on average 1.3024193548387097) internal successors, (323), 257 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:36,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 323 transitions. [2021-11-06 00:14:36,669 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 323 transitions. Word has length 106 [2021-11-06 00:14:36,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 00:14:36,669 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 323 transitions. [2021-11-06 00:14:36,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:36,670 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 323 transitions. [2021-11-06 00:14:36,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 00:14:36,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 00:14:36,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 00:14:36,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 00:14:36,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-06 00:14:36,898 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 00:14:36,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 00:14:36,898 INFO L85 PathProgramCache]: Analyzing trace with hash -426500019, now seen corresponding path program 1 times [2021-11-06 00:14:36,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 00:14:36,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624122516] [2021-11-06 00:14:36,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:36,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 00:14:36,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 00:14:36,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240455752] [2021-11-06 00:14:36,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:36,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 00:14:36,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 00:14:36,921 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 00:14:36,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 00:14:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 00:14:37,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 00:14:37,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 00:14:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 00:14:37,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 00:14:37,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 00:14:37,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624122516] [2021-11-06 00:14:37,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 00:14:37,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240455752] [2021-11-06 00:14:37,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240455752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 00:14:37,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 00:14:37,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 00:14:37,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150489637] [2021-11-06 00:14:37,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 00:14:37,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 00:14:37,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 00:14:37,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 00:14:37,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 00:14:37,261 INFO L87 Difference]: Start difference. First operand 258 states and 323 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:37,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 00:14:37,306 INFO L93 Difference]: Finished difference Result 505 states and 635 transitions. [2021-11-06 00:14:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 00:14:37,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-06 00:14:37,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 00:14:37,307 INFO L225 Difference]: With dead ends: 505 [2021-11-06 00:14:37,308 INFO L226 Difference]: Without dead ends: 250 [2021-11-06 00:14:37,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 00:14:37,309 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 270 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.26ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.26ms IncrementalHoareTripleChecker+Time [2021-11-06 00:14:37,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 517 Invalid, 66 Unknown, 0 Unchecked, 1.26ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 36.26ms Time] [2021-11-06 00:14:37,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-06 00:14:37,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2021-11-06 00:14:37,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 234 states have (on average 1.2905982905982907) internal successors, (302), 243 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 302 transitions. [2021-11-06 00:14:37,314 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 302 transitions. Word has length 106 [2021-11-06 00:14:37,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 00:14:37,314 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 302 transitions. [2021-11-06 00:14:37,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:37,315 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 302 transitions. [2021-11-06 00:14:37,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 00:14:37,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 00:14:37,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 00:14:37,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 00:14:37,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 00:14:37,544 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 00:14:37,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 00:14:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1791075329, now seen corresponding path program 1 times [2021-11-06 00:14:37,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 00:14:37,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286673352] [2021-11-06 00:14:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:37,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 00:14:37,555 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 00:14:37,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219822063] [2021-11-06 00:14:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:37,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 00:14:37,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 00:14:37,557 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 00:14:37,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 00:14:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 00:14:37,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 00:14:37,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 00:14:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 00:14:37,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 00:14:37,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 00:14:37,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286673352] [2021-11-06 00:14:37,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 00:14:37,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219822063] [2021-11-06 00:14:37,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219822063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 00:14:37,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 00:14:37,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 00:14:37,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992984818] [2021-11-06 00:14:37,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 00:14:37,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 00:14:37,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 00:14:37,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 00:14:37,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 00:14:37,868 INFO L87 Difference]: Start difference. First operand 244 states and 302 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:37,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 00:14:37,915 INFO L93 Difference]: Finished difference Result 566 states and 702 transitions. [2021-11-06 00:14:37,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 00:14:37,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-06 00:14:37,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 00:14:37,916 INFO L225 Difference]: With dead ends: 566 [2021-11-06 00:14:37,916 INFO L226 Difference]: Without dead ends: 325 [2021-11-06 00:14:37,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 00:14:37,917 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 263 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.30ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.44ms IncrementalHoareTripleChecker+Time [2021-11-06 00:14:37,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 812 Invalid, 66 Unknown, 0 Unchecked, 1.30ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 36.44ms Time] [2021-11-06 00:14:37,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-06 00:14:37,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 230. [2021-11-06 00:14:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 220 states have (on average 1.2772727272727273) internal successors, (281), 229 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 281 transitions. [2021-11-06 00:14:37,922 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 281 transitions. Word has length 106 [2021-11-06 00:14:37,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 00:14:37,922 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 281 transitions. [2021-11-06 00:14:37,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:37,922 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 281 transitions. [2021-11-06 00:14:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 00:14:37,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 00:14:37,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 00:14:37,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 00:14:38,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 00:14:38,125 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 00:14:38,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 00:14:38,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1369189005, now seen corresponding path program 1 times [2021-11-06 00:14:38,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 00:14:38,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963678468] [2021-11-06 00:14:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:38,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 00:14:38,136 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 00:14:38,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588761119] [2021-11-06 00:14:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:38,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 00:14:38,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 00:14:38,137 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 00:14:38,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 00:14:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 00:14:38,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 00:14:38,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 00:14:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 00:14:38,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 00:14:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 00:14:38,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 00:14:38,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963678468] [2021-11-06 00:14:38,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 00:14:38,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588761119] [2021-11-06 00:14:38,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588761119] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 00:14:38,646 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 00:14:38,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-06 00:14:38,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920474374] [2021-11-06 00:14:38,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-06 00:14:38,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 00:14:38,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 00:14:38,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 00:14:38,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 00:14:38,648 INFO L87 Difference]: Start difference. First operand 230 states and 281 transitions. Second operand has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:38,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 00:14:38,687 INFO L93 Difference]: Finished difference Result 821 states and 1005 transitions. [2021-11-06 00:14:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 00:14:38,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 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 106 [2021-11-06 00:14:38,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 00:14:38,693 INFO L225 Difference]: With dead ends: 821 [2021-11-06 00:14:38,693 INFO L226 Difference]: Without dead ends: 776 [2021-11-06 00:14:38,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.77ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 00:14:38,694 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 948 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.22ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.53ms IncrementalHoareTripleChecker+Time [2021-11-06 00:14:38,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 1054 Invalid, 20 Unknown, 0 Unchecked, 2.22ms Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 15.53ms Time] [2021-11-06 00:14:38,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-11-06 00:14:38,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 776. [2021-11-06 00:14:38,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 766 states have (on average 1.2362924281984333) internal successors, (947), 775 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:38,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 947 transitions. [2021-11-06 00:14:38,716 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 947 transitions. Word has length 106 [2021-11-06 00:14:38,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 00:14:38,717 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 947 transitions. [2021-11-06 00:14:38,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:38,718 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 947 transitions. [2021-11-06 00:14:38,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2021-11-06 00:14:38,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 00:14:38,724 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 00:14:38,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 00:14:38,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 00:14:38,942 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 00:14:38,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 00:14:38,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1181109906, now seen corresponding path program 2 times [2021-11-06 00:14:38,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 00:14:38,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908987043] [2021-11-06 00:14:38,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:38,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 00:14:38,960 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 00:14:38,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707511876] [2021-11-06 00:14:38,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 00:14:38,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 00:14:38,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 00:14:38,961 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 00:14:38,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 00:14:39,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 00:14:39,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 00:14:39,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 00:14:39,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 00:14:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2021-11-06 00:14:40,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 00:14:40,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 00:14:40,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908987043] [2021-11-06 00:14:40,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 00:14:40,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707511876] [2021-11-06 00:14:40,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707511876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 00:14:40,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 00:14:40,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 00:14:40,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659320827] [2021-11-06 00:14:40,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 00:14:40,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 00:14:40,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 00:14:40,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 00:14:40,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 00:14:40,545 INFO L87 Difference]: Start difference. First operand 776 states and 947 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 00:14:40,766 INFO L93 Difference]: Finished difference Result 1405 states and 1719 transitions. [2021-11-06 00:14:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 00:14:40,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 400 [2021-11-06 00:14:40,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 00:14:40,769 INFO L225 Difference]: With dead ends: 1405 [2021-11-06 00:14:40,769 INFO L226 Difference]: Without dead ends: 774 [2021-11-06 00:14:40,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.79ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 00:14:40,770 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 75 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 177.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 200.58ms IncrementalHoareTripleChecker+Time [2021-11-06 00:14:40,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 726 Invalid, 68 Unknown, 0 Unchecked, 1.97ms Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 200.58ms Time] [2021-11-06 00:14:40,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-06 00:14:40,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2021-11-06 00:14:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 764 states have (on average 1.2356020942408377) internal successors, (944), 773 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:40,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 944 transitions. [2021-11-06 00:14:40,782 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 944 transitions. Word has length 400 [2021-11-06 00:14:40,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 00:14:40,782 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 944 transitions. [2021-11-06 00:14:40,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:40,783 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 944 transitions. [2021-11-06 00:14:40,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-06 00:14:40,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 00:14:40,786 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 00:14:40,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 00:14:41,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 00:14:41,004 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 00:14:41,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 00:14:41,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1217332562, now seen corresponding path program 1 times [2021-11-06 00:14:41,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 00:14:41,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120028053] [2021-11-06 00:14:41,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:41,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 00:14:41,020 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 00:14:41,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1687778773] [2021-11-06 00:14:41,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:41,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 00:14:41,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 00:14:41,022 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 00:14:41,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 00:14:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 00:14:41,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-06 00:14:41,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 00:14:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 00:14:41,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 00:14:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 00:14:42,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 00:14:42,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120028053] [2021-11-06 00:14:42,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 00:14:42,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687778773] [2021-11-06 00:14:42,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687778773] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 00:14:42,645 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 00:14:42,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-06 00:14:42,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782814309] [2021-11-06 00:14:42,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-06 00:14:42,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 00:14:42,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 00:14:42,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 00:14:42,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-06 00:14:42,648 INFO L87 Difference]: Start difference. First operand 774 states and 944 transitions. Second operand has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:42,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 00:14:42,778 INFO L93 Difference]: Finished difference Result 1911 states and 2337 transitions. [2021-11-06 00:14:42,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 00:14:42,778 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 0 states have call successors, (0), 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 407 [2021-11-06 00:14:42,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 00:14:42,783 INFO L225 Difference]: With dead ends: 1911 [2021-11-06 00:14:42,784 INFO L226 Difference]: Without dead ends: 1866 [2021-11-06 00:14:42,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.88ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-06 00:14:42,786 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 3587 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3587 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.16ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.20ms IncrementalHoareTripleChecker+Time [2021-11-06 00:14:42,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3587 Valid, 2296 Invalid, 43 Unknown, 0 Unchecked, 9.16ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 39.20ms Time] [2021-11-06 00:14:42,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2021-11-06 00:14:42,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1866. [2021-11-06 00:14:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1856 states have (on average 1.2262931034482758) internal successors, (2276), 1865 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:42,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 2276 transitions. [2021-11-06 00:14:42,817 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 2276 transitions. Word has length 407 [2021-11-06 00:14:42,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 00:14:42,818 INFO L470 AbstractCegarLoop]: Abstraction has 1866 states and 2276 transitions. [2021-11-06 00:14:42,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:42,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 2276 transitions. [2021-11-06 00:14:42,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2021-11-06 00:14:42,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 00:14:42,834 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 00:14:42,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-06 00:14:43,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 00:14:43,055 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 00:14:43,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 00:14:43,055 INFO L85 PathProgramCache]: Analyzing trace with hash -267019748, now seen corresponding path program 2 times [2021-11-06 00:14:43,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 00:14:43,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447237737] [2021-11-06 00:14:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:43,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 00:14:43,105 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 00:14:43,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326202686] [2021-11-06 00:14:43,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 00:14:43,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 00:14:43,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 00:14:43,114 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 00:14:43,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 00:14:43,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 00:14:43,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 00:14:43,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 2582 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 00:14:43,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 00:14:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4402 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 4077 trivial. 0 not checked. [2021-11-06 00:14:44,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 00:14:44,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 00:14:44,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447237737] [2021-11-06 00:14:44,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 00:14:44,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326202686] [2021-11-06 00:14:44,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326202686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 00:14:44,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 00:14:44,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 00:14:44,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539189851] [2021-11-06 00:14:44,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 00:14:44,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 00:14:44,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 00:14:44,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 00:14:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 00:14:44,889 INFO L87 Difference]: Start difference. First operand 1866 states and 2276 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:44,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 00:14:44,924 INFO L93 Difference]: Finished difference Result 3674 states and 4486 transitions. [2021-11-06 00:14:44,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 00:14:44,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 995 [2021-11-06 00:14:44,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 00:14:44,931 INFO L225 Difference]: With dead ends: 3674 [2021-11-06 00:14:44,931 INFO L226 Difference]: Without dead ends: 1864 [2021-11-06 00:14:44,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 993 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.12ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 00:14:44,934 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 19 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.72ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.18ms IncrementalHoareTripleChecker+Time [2021-11-06 00:14:44,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 518 Invalid, 7 Unknown, 0 Unchecked, 0.72ms Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 16.18ms Time] [2021-11-06 00:14:44,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-11-06 00:14:44,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1864. [2021-11-06 00:14:44,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1854 states have (on average 1.225997842502697) internal successors, (2273), 1863 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:44,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2273 transitions. [2021-11-06 00:14:44,965 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2273 transitions. Word has length 995 [2021-11-06 00:14:44,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 00:14:44,965 INFO L470 AbstractCegarLoop]: Abstraction has 1864 states and 2273 transitions. [2021-11-06 00:14:44,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 00:14:44,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2273 transitions. [2021-11-06 00:14:44,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2021-11-06 00:14:44,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 00:14:44,984 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 00:14:45,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 00:14:45,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-06 00:14:45,203 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 00:14:45,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 00:14:45,204 INFO L85 PathProgramCache]: Analyzing trace with hash 791199788, now seen corresponding path program 1 times [2021-11-06 00:14:45,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 00:14:45,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032412219] [2021-11-06 00:14:45,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:45,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 00:14:45,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 00:14:45,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553014238] [2021-11-06 00:14:45,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 00:14:45,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 00:14:45,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 00:14:45,234 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 00:14:45,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process Killed by 15