./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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_SFH_test1-1.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 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 22:51:14,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 22:51:14,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 22:51:14,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 22:51:14,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 22:51:14,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 22:51:14,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 22:51:14,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 22:51:14,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 22:51:14,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 22:51:14,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 22:51:14,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 22:51:14,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 22:51:14,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 22:51:14,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 22:51:14,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 22:51:14,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 22:51:14,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 22:51:14,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 22:51:14,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 22:51:14,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 22:51:14,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 22:51:14,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 22:51:14,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 22:51:14,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 22:51:14,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 22:51:14,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 22:51:14,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 22:51:14,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 22:51:14,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 22:51:14,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 22:51:14,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 22:51:14,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 22:51:14,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 22:51:14,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 22:51:14,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 22:51:14,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 22:51:14,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 22:51:14,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 22:51:14,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 22:51:14,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 22:51:14,898 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 22:51:14,914 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 22:51:14,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 22:51:14,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 22:51:14,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 22:51:14,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 22:51:14,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 22:51:14,916 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 22:51:14,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 22:51:14,917 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 22:51:14,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 22:51:14,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 22:51:14,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 22:51:14,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 22:51:14,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 22:51:14,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 22:51:14,918 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 22:51:14,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 22:51:14,919 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 22:51:14,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 22:51:14,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 22:51:14,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 22:51:14,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 22:51:14,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:51:14,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 22:51:14,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 22:51:14,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 22:51:14,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 22:51:14,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 22:51:14,920 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 22:51:14,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 22:51:14,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 22:51:14,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 22:51:14,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 [2021-11-07 22:51:15,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 22:51:15,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 22:51:15,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 22:51:15,157 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 22:51:15,157 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 22:51:15,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2021-11-07 22:51:15,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14b06248e/045d0930f8bb4a3695bf4884cd3bea8b/FLAG9cbedfc2a [2021-11-07 22:51:15,681 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 22:51:15,685 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2021-11-07 22:51:15,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14b06248e/045d0930f8bb4a3695bf4884cd3bea8b/FLAG9cbedfc2a [2021-11-07 22:51:15,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14b06248e/045d0930f8bb4a3695bf4884cd3bea8b [2021-11-07 22:51:15,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 22:51:15,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 22:51:15,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 22:51:15,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 22:51:15,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 22:51:15,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:51:15" (1/1) ... [2021-11-07 22:51:15,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5347332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:51:15, skipping insertion in model container [2021-11-07 22:51:15,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:51:15" (1/1) ... [2021-11-07 22:51:15,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 22:51:15,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 22:51:16,042 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_SFH_test1-1.i[33021,33034] [2021-11-07 22:51:16,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:51:16,131 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 22:51:16,158 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_SFH_test1-1.i[33021,33034] [2021-11-07 22:51:16,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:51:16,247 INFO L208 MainTranslator]: Completed translation [2021-11-07 22:51:16,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:51:16 WrapperNode [2021-11-07 22:51:16,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 22:51:16,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 22:51:16,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 22:51:16,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 22:51:16,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:51:16" (1/1) ... [2021-11-07 22:51:16,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:51:16" (1/1) ... [2021-11-07 22:51:16,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 22:51:16,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 22:51:16,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 22:51:16,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 22:51:16,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:51:16" (1/1) ... [2021-11-07 22:51:16,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:51:16" (1/1) ... [2021-11-07 22:51:16,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:51:16" (1/1) ... [2021-11-07 22:51:16,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:51:16" (1/1) ... [2021-11-07 22:51:16,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:51:16" (1/1) ... [2021-11-07 22:51:16,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:51:16" (1/1) ... [2021-11-07 22:51:16,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:51:16" (1/1) ... [2021-11-07 22:51:16,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 22:51:16,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 22:51:16,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 22:51:16,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 22:51:16,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:51:16" (1/1) ... [2021-11-07 22:51:16,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:51:16,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:51:16,444 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) [2021-11-07 22:51:16,463 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 [2021-11-07 22:51:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 22:51:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 22:51:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 22:51:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 22:51:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 22:51:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 22:51:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 22:51:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 22:51:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 22:51:16,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 22:51:17,132 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 22:51:17,133 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-07 22:51:17,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:51:17 BoogieIcfgContainer [2021-11-07 22:51:17,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 22:51:17,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 22:51:17,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 22:51:17,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 22:51:17,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:51:15" (1/3) ... [2021-11-07 22:51:17,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af5bb63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:51:17, skipping insertion in model container [2021-11-07 22:51:17,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:51:16" (2/3) ... [2021-11-07 22:51:17,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af5bb63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:51:17, skipping insertion in model container [2021-11-07 22:51:17,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:51:17" (3/3) ... [2021-11-07 22:51:17,144 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test1-1.i [2021-11-07 22:51:17,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 22:51:17,148 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 22:51:17,182 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 22:51:17,186 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 [2021-11-07 22:51:17,186 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 22:51:17,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 127 states have (on average 1.7401574803149606) internal successors, (221), 137 states have internal predecessors, (221), 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) [2021-11-07 22:51:17,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 22:51:17,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:51:17,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:51:17,201 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)] === [2021-11-07 22:51:17,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:51:17,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1407226647, now seen corresponding path program 1 times [2021-11-07 22:51:17,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:51:17,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269035835] [2021-11-07 22:51:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:51:17,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:51:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:51:17,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:51:17,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:51:17,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269035835] [2021-11-07 22:51:17,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269035835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:51:17,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:51:17,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 22:51:17,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871585329] [2021-11-07 22:51:17,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:51:17,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 22:51:17,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:51:17,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 22:51:17,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:51:17,336 INFO L87 Difference]: Start difference. First operand has 138 states, 127 states have (on average 1.7401574803149606) internal successors, (221), 137 states have internal predecessors, (221), 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) [2021-11-07 22:51:17,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:51:17,390 INFO L93 Difference]: Finished difference Result 274 states and 440 transitions. [2021-11-07 22:51:17,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 22:51:17,392 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 [2021-11-07 22:51:17,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:51:17,400 INFO L225 Difference]: With dead ends: 274 [2021-11-07 22:51:17,401 INFO L226 Difference]: Without dead ends: 134 [2021-11-07 22:51:17,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:51:17,407 INFO L933 BasicCegarLoop]: 176 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, 176 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 22:51:17,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 1.92ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 22:51:17,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-07 22:51:17,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-07 22:51:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 124 states have (on average 1.3870967741935485) internal successors, (172), 133 states have internal predecessors, (172), 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) [2021-11-07 22:51:17,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 172 transitions. [2021-11-07 22:51:17,452 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 172 transitions. Word has length 8 [2021-11-07 22:51:17,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:51:17,453 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 172 transitions. [2021-11-07 22:51:17,453 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) [2021-11-07 22:51:17,453 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 172 transitions. [2021-11-07 22:51:17,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 22:51:17,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:51:17,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:51:17,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 22:51:17,455 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)] === [2021-11-07 22:51:17,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:51:17,457 INFO L85 PathProgramCache]: Analyzing trace with hash 569968710, now seen corresponding path program 1 times [2021-11-07 22:51:17,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:51:17,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046235032] [2021-11-07 22:51:17,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:51:17,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:51:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:51:17,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:51:17,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:51:17,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046235032] [2021-11-07 22:51:17,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046235032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:51:17,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:51:17,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:51:17,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745985071] [2021-11-07 22:51:17,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:51:17,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:51:17,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:51:17,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:51:17,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:51:17,527 INFO L87 Difference]: Start difference. First operand 134 states and 172 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) [2021-11-07 22:51:17,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:51:17,567 INFO L93 Difference]: Finished difference Result 266 states and 342 transitions. [2021-11-07 22:51:17,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:51:17,568 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 [2021-11-07 22:51:17,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:51:17,570 INFO L225 Difference]: With dead ends: 266 [2021-11-07 22:51:17,571 INFO L226 Difference]: Without dead ends: 221 [2021-11-07 22:51:17,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:51:17,574 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 113 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.39ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.62ms IncrementalHoareTripleChecker+Time [2021-11-07 22:51:17,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 336 Invalid, 7 Unknown, 0 Unchecked, 5.39ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 8.62ms Time] [2021-11-07 22:51:17,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-07 22:51:17,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 135. [2021-11-07 22:51:17,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 125 states have (on average 1.384) internal successors, (173), 134 states have internal predecessors, (173), 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) [2021-11-07 22:51:17,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 173 transitions. [2021-11-07 22:51:17,583 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 173 transitions. Word has length 8 [2021-11-07 22:51:17,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:51:17,584 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 173 transitions. [2021-11-07 22:51:17,584 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) [2021-11-07 22:51:17,584 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 173 transitions. [2021-11-07 22:51:17,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 22:51:17,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:51:17,587 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] [2021-11-07 22:51:17,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 22:51:17,589 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)] === [2021-11-07 22:51:17,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:51:17,589 INFO L85 PathProgramCache]: Analyzing trace with hash -781067853, now seen corresponding path program 1 times [2021-11-07 22:51:17,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:51:17,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453894718] [2021-11-07 22:51:17,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:51:17,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:51:17,614 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:51:17,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587616293] [2021-11-07 22:51:17,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:51:17,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:51:17,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:51:17,620 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) [2021-11-07 22:51:17,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 22:51:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:51:17,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:51:17,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:51:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:51:17,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:51:17,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:51:17,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453894718] [2021-11-07 22:51:17,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:51:17,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587616293] [2021-11-07 22:51:17,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587616293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:51:17,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:51:17,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:51:17,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668946802] [2021-11-07 22:51:17,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:51:17,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:51:17,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:51:17,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:51:17,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:51:17,888 INFO L87 Difference]: Start difference. First operand 135 states and 173 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-07 22:51:17,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:51:17,936 INFO L93 Difference]: Finished difference Result 288 states and 374 transitions. [2021-11-07 22:51:17,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:51:17,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-07 22:51:17,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:51:17,938 INFO L225 Difference]: With dead ends: 288 [2021-11-07 22:51:17,938 INFO L226 Difference]: Without dead ends: 156 [2021-11-07 22:51:17,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:51:17,939 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 9 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.14ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.88ms IncrementalHoareTripleChecker+Time [2021-11-07 22:51:17,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 289 Invalid, 72 Unknown, 0 Unchecked, 1.14ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 41.88ms Time] [2021-11-07 22:51:17,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-07 22:51:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2021-11-07 22:51:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 145 states have (on average 1.3310344827586207) internal successors, (193), 154 states have internal predecessors, (193), 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) [2021-11-07 22:51:17,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 193 transitions. [2021-11-07 22:51:17,945 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 193 transitions. Word has length 59 [2021-11-07 22:51:17,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:51:17,946 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 193 transitions. [2021-11-07 22:51:17,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-07 22:51:17,946 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 193 transitions. [2021-11-07 22:51:17,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 22:51:17,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:51:17,947 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] [2021-11-07 22:51:17,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 22:51:18,163 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 [2021-11-07 22:51:18,164 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)] === [2021-11-07 22:51:18,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:51:18,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1269877969, now seen corresponding path program 1 times [2021-11-07 22:51:18,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:51:18,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104057368] [2021-11-07 22:51:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:51:18,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:51:18,179 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:51:18,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46537043] [2021-11-07 22:51:18,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:51:18,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:51:18,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:51:18,196 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) [2021-11-07 22:51:18,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 22:51:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:51:18,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:51:18,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:51:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:51:18,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:51:18,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:51:18,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104057368] [2021-11-07 22:51:18,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:51:18,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46537043] [2021-11-07 22:51:18,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46537043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:51:18,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:51:18,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:51:18,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028100067] [2021-11-07 22:51:18,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:51:18,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:51:18,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:51:18,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:51:18,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:51:18,493 INFO L87 Difference]: Start difference. First operand 155 states and 193 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-07 22:51:18,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:51:18,562 INFO L93 Difference]: Finished difference Result 299 states and 375 transitions. [2021-11-07 22:51:18,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:51:18,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2021-11-07 22:51:18,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:51:18,564 INFO L225 Difference]: With dead ends: 299 [2021-11-07 22:51:18,564 INFO L226 Difference]: Without dead ends: 147 [2021-11-07 22:51:18,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.79ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:51:18,569 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 160 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.17ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.75ms IncrementalHoareTripleChecker+Time [2021-11-07 22:51:18,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 297 Invalid, 66 Unknown, 0 Unchecked, 3.17ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 49.75ms Time] [2021-11-07 22:51:18,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-07 22:51:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 141. [2021-11-07 22:51:18,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 140 states have internal predecessors, (172), 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) [2021-11-07 22:51:18,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 172 transitions. [2021-11-07 22:51:18,581 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 172 transitions. Word has length 59 [2021-11-07 22:51:18,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:51:18,582 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 172 transitions. [2021-11-07 22:51:18,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-07 22:51:18,582 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 172 transitions. [2021-11-07 22:51:18,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 22:51:18,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:51:18,583 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] [2021-11-07 22:51:18,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 22:51:18,795 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 [2021-11-07 22:51:18,796 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)] === [2021-11-07 22:51:18,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:51:18,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1890386365, now seen corresponding path program 1 times [2021-11-07 22:51:18,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:51:18,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008905932] [2021-11-07 22:51:18,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:51:18,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:51:18,821 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:51:18,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299293223] [2021-11-07 22:51:18,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:51:18,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:51:18,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:51:18,825 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) [2021-11-07 22:51:18,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 22:51:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:51:18,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:51:18,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:51:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:51:19,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:51:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:51:19,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:51:19,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008905932] [2021-11-07 22:51:19,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:51:19,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299293223] [2021-11-07 22:51:19,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299293223] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:51:19,220 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:51:19,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-07 22:51:19,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549087352] [2021-11-07 22:51:19,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:51:19,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 22:51:19,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:51:19,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 22:51:19,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:51:19,222 INFO L87 Difference]: Start difference. First operand 141 states and 172 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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) [2021-11-07 22:51:19,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:51:19,253 INFO L93 Difference]: Finished difference Result 465 states and 569 transitions. [2021-11-07 22:51:19,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 22:51:19,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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 59 [2021-11-07 22:51:19,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:51:19,255 INFO L225 Difference]: With dead ends: 465 [2021-11-07 22:51:19,255 INFO L226 Difference]: Without dead ends: 420 [2021-11-07 22:51:19,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.31ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:51:19,256 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 592 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.07ms IncrementalHoareTripleChecker+Time [2021-11-07 22:51:19,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 586 Invalid, 19 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 15.07ms Time] [2021-11-07 22:51:19,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-07 22:51:19,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2021-11-07 22:51:19,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 410 states have (on average 1.2463414634146341) internal successors, (511), 419 states have internal predecessors, (511), 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) [2021-11-07 22:51:19,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 511 transitions. [2021-11-07 22:51:19,267 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 511 transitions. Word has length 59 [2021-11-07 22:51:19,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:51:19,268 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 511 transitions. [2021-11-07 22:51:19,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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) [2021-11-07 22:51:19,268 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 511 transitions. [2021-11-07 22:51:19,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-07 22:51:19,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:51:19,273 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:51:19,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 22:51:19,484 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 [2021-11-07 22:51:19,485 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)] === [2021-11-07 22:51:19,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:51:19,486 INFO L85 PathProgramCache]: Analyzing trace with hash 292771206, now seen corresponding path program 2 times [2021-11-07 22:51:19,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:51:19,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363472795] [2021-11-07 22:51:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:51:19,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:51:19,504 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:51:19,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589079418] [2021-11-07 22:51:19,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:51:19,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:51:19,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:51:19,525 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) [2021-11-07 22:51:19,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 22:51:19,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 22:51:19,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:51:19,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 22:51:19,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:51:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-07 22:51:20,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:51:20,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:51:20,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363472795] [2021-11-07 22:51:20,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:51:20,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589079418] [2021-11-07 22:51:20,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589079418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:51:20,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:51:20,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:51:20,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603926581] [2021-11-07 22:51:20,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:51:20,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:51:20,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:51:20,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:51:20,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:51:20,365 INFO L87 Difference]: Start difference. First operand 420 states and 511 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-07 22:51:20,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:51:20,467 INFO L93 Difference]: Finished difference Result 782 states and 956 transitions. [2021-11-07 22:51:20,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:51:20,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 212 [2021-11-07 22:51:20,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:51:20,469 INFO L225 Difference]: With dead ends: 782 [2021-11-07 22:51:20,469 INFO L226 Difference]: Without dead ends: 418 [2021-11-07 22:51:20,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.07ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:51:20,470 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 19 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.49ms IncrementalHoareTripleChecker+Time [2021-11-07 22:51:20,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 443 Invalid, 42 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 92.49ms Time] [2021-11-07 22:51:20,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-07 22:51:20,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2021-11-07 22:51:20,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 408 states have (on average 1.2450980392156863) internal successors, (508), 417 states have internal predecessors, (508), 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) [2021-11-07 22:51:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 508 transitions. [2021-11-07 22:51:20,497 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 508 transitions. Word has length 212 [2021-11-07 22:51:20,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:51:20,497 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 508 transitions. [2021-11-07 22:51:20,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-07 22:51:20,497 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 508 transitions. [2021-11-07 22:51:20,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-07 22:51:20,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:51:20,501 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, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:51:20,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 22:51:20,718 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 [2021-11-07 22:51:20,719 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)] === [2021-11-07 22:51:20,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:51:20,719 INFO L85 PathProgramCache]: Analyzing trace with hash -202059402, now seen corresponding path program 1 times [2021-11-07 22:51:20,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:51:20,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390458684] [2021-11-07 22:51:20,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:51:20,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:51:20,730 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:51:20,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618227682] [2021-11-07 22:51:20,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:51:20,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:51:20,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:51:20,733 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) [2021-11-07 22:51:20,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 22:51:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:51:20,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 22:51:20,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:51:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:51:21,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:51:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:51:21,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:51:21,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390458684] [2021-11-07 22:51:21,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:51:21,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618227682] [2021-11-07 22:51:21,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618227682] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:51:21,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:51:21,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-07 22:51:21,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445936611] [2021-11-07 22:51:21,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:51:21,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 22:51:21,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:51:21,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 22:51:21,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 22:51:21,716 INFO L87 Difference]: Start difference. First operand 418 states and 508 transitions. Second operand has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 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) [2021-11-07 22:51:21,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:51:21,805 INFO L93 Difference]: Finished difference Result 1021 states and 1247 transitions. [2021-11-07 22:51:21,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 22:51:21,805 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2021-11-07 22:51:21,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:51:21,808 INFO L225 Difference]: With dead ends: 1021 [2021-11-07 22:51:21,808 INFO L226 Difference]: Without dead ends: 976 [2021-11-07 22:51:21,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.45ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 22:51:21,809 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 2015 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.24ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.17ms IncrementalHoareTripleChecker+Time [2021-11-07 22:51:21,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2015 Valid, 1154 Invalid, 40 Unknown, 0 Unchecked, 3.24ms Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 32.17ms Time] [2021-11-07 22:51:21,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-11-07 22:51:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 976. [2021-11-07 22:51:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 966 states have (on average 1.2277432712215322) internal successors, (1186), 975 states have internal predecessors, (1186), 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) [2021-11-07 22:51:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1186 transitions. [2021-11-07 22:51:21,824 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1186 transitions. Word has length 219 [2021-11-07 22:51:21,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:51:21,824 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1186 transitions. [2021-11-07 22:51:21,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 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) [2021-11-07 22:51:21,825 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1186 transitions. [2021-11-07 22:51:21,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2021-11-07 22:51:21,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:51:21,830 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, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:51:21,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 22:51:22,052 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 [2021-11-07 22:51:22,053 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)] === [2021-11-07 22:51:22,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:51:22,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1985764010, now seen corresponding path program 2 times [2021-11-07 22:51:22,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:51:22,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755350484] [2021-11-07 22:51:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:51:22,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:51:22,071 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:51:22,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103510013] [2021-11-07 22:51:22,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:51:22,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:51:22,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:51:22,073 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) [2021-11-07 22:51:22,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 22:51:53,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 22:51:53,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:51:53,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 22:51:53,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:51:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2287 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2021-11-07 22:51:53,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:51:53,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:51:53,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755350484] [2021-11-07 22:51:53,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:51:53,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103510013] [2021-11-07 22:51:53,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103510013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:51:53,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:51:53,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:51:53,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877584152] [2021-11-07 22:51:53,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:51:53,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:51:53,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:51:53,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:51:53,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:51:53,826 INFO L87 Difference]: Start difference. First operand 976 states and 1186 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-11-07 22:51:53,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:51:53,850 INFO L93 Difference]: Finished difference Result 1909 states and 2332 transitions. [2021-11-07 22:51:53,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:51:53,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 525 [2021-11-07 22:51:53,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:51:53,853 INFO L225 Difference]: With dead ends: 1909 [2021-11-07 22:51:53,853 INFO L226 Difference]: Without dead ends: 986 [2021-11-07 22:51:53,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:51:53,854 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.72ms IncrementalHoareTripleChecker+Time [2021-11-07 22:51:53,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 9 Unknown, 0 Unchecked, 0.48ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 10.72ms Time] [2021-11-07 22:51:53,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-11-07 22:51:53,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 986. [2021-11-07 22:51:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 976 states have (on average 1.2254098360655739) internal successors, (1196), 985 states have internal predecessors, (1196), 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) [2021-11-07 22:51:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1196 transitions. [2021-11-07 22:51:53,870 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1196 transitions. Word has length 525 [2021-11-07 22:51:53,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:51:53,870 INFO L470 AbstractCegarLoop]: Abstraction has 986 states and 1196 transitions. [2021-11-07 22:51:53,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-11-07 22:51:53,871 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1196 transitions. [2021-11-07 22:51:53,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2021-11-07 22:51:53,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:51:53,877 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, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:51:53,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 22:51:54,091 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 [2021-11-07 22:51:54,091 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)] === [2021-11-07 22:51:54,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:51:54,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1773801099, now seen corresponding path program 1 times [2021-11-07 22:51:54,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:51:54,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415945760] [2021-11-07 22:51:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:51:54,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:51:54,130 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:51:54,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582467816] [2021-11-07 22:51:54,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:51:54,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:51:54,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:51:54,131 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) [2021-11-07 22:51:54,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 22:56:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:56:04,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:56:04,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:56:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2288 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2021-11-07 22:56:04,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:56:04,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:56:04,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415945760] [2021-11-07 22:56:04,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:56:04,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582467816] [2021-11-07 22:56:04,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582467816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:56:04,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:56:04,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:56:04,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118894192] [2021-11-07 22:56:04,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:56:04,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:56:04,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:56:04,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:56:04,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:56:04,865 INFO L87 Difference]: Start difference. First operand 986 states and 1196 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-11-07 22:56:04,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:56:04,898 INFO L93 Difference]: Finished difference Result 1932 states and 2356 transitions. [2021-11-07 22:56:04,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:56:04,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 526 [2021-11-07 22:56:04,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:56:04,901 INFO L225 Difference]: With dead ends: 1932 [2021-11-07 22:56:04,901 INFO L226 Difference]: Without dead ends: 996 [2021-11-07 22:56:04,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.18ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:56:04,904 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.49ms IncrementalHoareTripleChecker+Time [2021-11-07 22:56:04,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 9 Unknown, 0 Unchecked, 0.53ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 10.49ms Time] [2021-11-07 22:56:04,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-07 22:56:04,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 996. [2021-11-07 22:56:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 986 states have (on average 1.2231237322515214) internal successors, (1206), 995 states have internal predecessors, (1206), 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) [2021-11-07 22:56:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1206 transitions. [2021-11-07 22:56:04,918 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1206 transitions. Word has length 526 [2021-11-07 22:56:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:56:04,919 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 1206 transitions. [2021-11-07 22:56:04,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-11-07 22:56:04,919 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1206 transitions. [2021-11-07 22:56:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2021-11-07 22:56:04,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:56:04,922 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, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:56:05,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 22:56:05,123 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 [2021-11-07 22:56:05,123 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)] === [2021-11-07 22:56:05,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:56:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1577277749, now seen corresponding path program 1 times [2021-11-07 22:56:05,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:56:05,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989282052] [2021-11-07 22:56:05,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:56:05,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:56:05,139 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:56:05,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495174430] [2021-11-07 22:56:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:56:05,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:56:05,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:56:05,152 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) [2021-11-07 22:56:05,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 22:59:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:59:41,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 22:59:41,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:59:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2021-11-07 22:59:42,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:59:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 325 proven. 1 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2021-11-07 22:59:43,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:59:43,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989282052] [2021-11-07 22:59:43,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:59:43,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495174430] [2021-11-07 22:59:43,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495174430] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:59:43,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:59:43,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2021-11-07 22:59:43,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542635795] [2021-11-07 22:59:43,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:59:43,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 22:59:43,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:59:43,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 22:59:43,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 22:59:43,064 INFO L87 Difference]: Start difference. First operand 996 states and 1206 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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) [2021-11-07 22:59:43,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:59:43,171 INFO L93 Difference]: Finished difference Result 3675 states and 4493 transitions. [2021-11-07 22:59:43,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 22:59:43,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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 527 [2021-11-07 22:59:43,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:59:43,178 INFO L225 Difference]: With dead ends: 3675 [2021-11-07 22:59:43,178 INFO L226 Difference]: Without dead ends: 2730 [2021-11-07 22:59:43,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 1046 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 42.90ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-07 22:59:43,181 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 302 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.12ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.50ms IncrementalHoareTripleChecker+Time [2021-11-07 22:59:43,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 1844 Invalid, 74 Unknown, 0 Unchecked, 2.12ms Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 44.50ms Time] [2021-11-07 22:59:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-07 22:59:43,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 1036. [2021-11-07 22:59:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1026 states have (on average 1.2144249512670566) internal successors, (1246), 1035 states have internal predecessors, (1246), 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) [2021-11-07 22:59:43,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1246 transitions. [2021-11-07 22:59:43,211 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1246 transitions. Word has length 527 [2021-11-07 22:59:43,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:59:43,211 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 1246 transitions. [2021-11-07 22:59:43,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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) [2021-11-07 22:59:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1246 transitions. [2021-11-07 22:59:43,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2021-11-07 22:59:43,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:59:43,214 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, 9, 9, 9, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:59:43,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 22:59:43,429 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 [2021-11-07 22:59:43,429 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)] === [2021-11-07 22:59:43,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:59:43,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1316590250, now seen corresponding path program 2 times [2021-11-07 22:59:43,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:59:43,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867444395] [2021-11-07 22:59:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:59:43,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:59:43,461 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:59:43,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [116103988] [2021-11-07 22:59:43,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:59:43,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:59:43,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:59:43,480 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) [2021-11-07 22:59:43,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 22:59:56,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 22:59:56,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:59:56,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 22:59:56,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:59:57,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2300 backedges. 325 proven. 13 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2021-11-07 22:59:57,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:59:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2300 backedges. 325 proven. 10 refuted. 0 times theorem prover too weak. 1965 trivial. 0 not checked. [2021-11-07 22:59:58,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:59:58,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867444395] [2021-11-07 22:59:58,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:59:58,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116103988] [2021-11-07 22:59:58,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116103988] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:59:58,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:59:58,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2021-11-07 22:59:58,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545719734] [2021-11-07 22:59:58,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:59:58,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 22:59:58,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:59:58,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 22:59:58,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-07 22:59:58,091 INFO L87 Difference]: Start difference. First operand 1036 states and 1246 transitions. Second operand has 16 states, 16 states have (on average 7.5625) internal successors, (121), 16 states have internal predecessors, (121), 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) [2021-11-07 22:59:59,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:59:59,118 INFO L93 Difference]: Finished difference Result 2984 states and 3716 transitions. [2021-11-07 22:59:59,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 22:59:59,119 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.5625) internal successors, (121), 16 states have internal predecessors, (121), 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 531 [2021-11-07 22:59:59,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:59:59,124 INFO L225 Difference]: With dead ends: 2984 [2021-11-07 22:59:59,124 INFO L226 Difference]: Without dead ends: 1956 [2021-11-07 22:59:59,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1052 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 718.33ms TimeCoverageRelationStatistics Valid=234, Invalid=696, Unknown=0, NotChecked=0, Total=930 [2021-11-07 22:59:59,126 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 809 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 290.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.40ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 343.52ms IncrementalHoareTripleChecker+Time [2021-11-07 22:59:59,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 2470 Invalid, 573 Unknown, 0 Unchecked, 5.40ms Time], IncrementalHoareTripleChecker [74 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 343.52ms Time] [2021-11-07 22:59:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2021-11-07 22:59:59,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1146. [2021-11-07 22:59:59,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1136 states have (on average 1.193661971830986) internal successors, (1356), 1145 states have internal predecessors, (1356), 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) [2021-11-07 22:59:59,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1356 transitions. [2021-11-07 22:59:59,156 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1356 transitions. Word has length 531 [2021-11-07 22:59:59,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:59:59,157 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 1356 transitions. [2021-11-07 22:59:59,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.5625) internal successors, (121), 16 states have internal predecessors, (121), 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) [2021-11-07 22:59:59,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1356 transitions. [2021-11-07 22:59:59,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2021-11-07 22:59:59,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:59:59,160 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, 9, 9, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:59:59,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 22:59:59,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:59:59,376 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:59:59,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:59:59,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2034509196, now seen corresponding path program 3 times [2021-11-07 22:59:59,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:59:59,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187243646] [2021-11-07 22:59:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:59:59,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:59:59,399 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:59:59,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567885918] [2021-11-07 22:59:59,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 22:59:59,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:59:59,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:59:59,400 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:59:59,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process Killed by 15