./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.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 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-06 02:20:50,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 02:20:50,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 02:20:50,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 02:20:50,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 02:20:50,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 02:20:50,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 02:20:50,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 02:20:50,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 02:20:50,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 02:20:50,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 02:20:50,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 02:20:50,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 02:20:50,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 02:20:50,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 02:20:50,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 02:20:50,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 02:20:50,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 02:20:50,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 02:20:50,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 02:20:50,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 02:20:50,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 02:20:50,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 02:20:50,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 02:20:50,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 02:20:50,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 02:20:50,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 02:20:50,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 02:20:50,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 02:20:50,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 02:20:50,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 02:20:50,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 02:20:50,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 02:20:50,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 02:20:50,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 02:20:50,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 02:20:50,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 02:20:50,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 02:20:50,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 02:20:50,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 02:20:50,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 02:20:50,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-06 02:20:50,250 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 02:20:50,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 02:20:50,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 02:20:50,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 02:20:50,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 02:20:50,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 02:20:50,254 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 02:20:50,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 02:20:50,254 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 02:20:50,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 02:20:50,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 02:20:50,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 02:20:50,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 02:20:50,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 02:20:50,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 02:20:50,256 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 02:20:50,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 02:20:50,256 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 02:20:50,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 02:20:50,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 02:20:50,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 02:20:50,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 02:20:50,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 02:20:50,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 02:20:50,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 02:20:50,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 02:20:50,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 02:20:50,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 02:20:50,259 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 02:20:50,259 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 02:20:50,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 02:20:50,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 02:20:50,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 [2021-11-06 02:20:50,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 02:20:50,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 02:20:50,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 02:20:50,587 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 02:20:50,588 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 02:20:50,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2021-11-06 02:20:50,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/786eb4ee8/d991cc85d77945cdbf8fb82b536d228f/FLAG0fdc7972f [2021-11-06 02:20:51,184 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 02:20:51,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2021-11-06 02:20:51,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/786eb4ee8/d991cc85d77945cdbf8fb82b536d228f/FLAG0fdc7972f [2021-11-06 02:20:51,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/786eb4ee8/d991cc85d77945cdbf8fb82b536d228f [2021-11-06 02:20:51,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 02:20:51,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 02:20:51,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 02:20:51,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 02:20:51,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 02:20:51,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:20:51" (1/1) ... [2021-11-06 02:20:51,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d680636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:20:51, skipping insertion in model container [2021-11-06 02:20:51,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:20:51" (1/1) ... [2021-11-06 02:20:51,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 02:20:51,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 02:20:52,185 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_test6-1.i[44118,44131] [2021-11-06 02:20:52,202 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_test6-1.i[44660,44673] [2021-11-06 02:20:52,309 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_test6-1.i[56247,56260] [2021-11-06 02:20:52,310 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_test6-1.i[56368,56381] [2021-11-06 02:20:52,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 02:20:52,325 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 02:20:52,359 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_test6-1.i[44118,44131] [2021-11-06 02:20:52,390 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_test6-1.i[44660,44673] [2021-11-06 02:20:52,450 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_test6-1.i[56247,56260] [2021-11-06 02:20:52,454 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_test6-1.i[56368,56381] [2021-11-06 02:20:52,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 02:20:52,520 INFO L208 MainTranslator]: Completed translation [2021-11-06 02:20:52,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:20:52 WrapperNode [2021-11-06 02:20:52,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 02:20:52,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 02:20:52,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 02:20:52,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 02:20:52,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:20:52" (1/1) ... [2021-11-06 02:20:52,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:20:52" (1/1) ... [2021-11-06 02:20:52,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 02:20:52,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 02:20:52,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 02:20:52,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 02:20:52,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:20:52" (1/1) ... [2021-11-06 02:20:52,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:20:52" (1/1) ... [2021-11-06 02:20:52,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:20:52" (1/1) ... [2021-11-06 02:20:52,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:20:52" (1/1) ... [2021-11-06 02:20:52,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:20:52" (1/1) ... [2021-11-06 02:20:52,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:20:52" (1/1) ... [2021-11-06 02:20:52,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:20:52" (1/1) ... [2021-11-06 02:20:52,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 02:20:52,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 02:20:52,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 02:20:52,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 02:20:52,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:20:52" (1/1) ... [2021-11-06 02:20:52,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 02:20:52,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:20:52,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 02:20:52,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 02:20:52,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 02:20:52,841 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 02:20:52,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 02:20:52,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 02:20:52,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 02:20:52,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 02:20:52,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 02:20:52,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 02:20:52,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 02:20:52,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 02:20:52,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 02:20:53,813 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 02:20:53,814 INFO L299 CfgBuilder]: Removed 111 assume(true) statements. [2021-11-06 02:20:53,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:20:53 BoogieIcfgContainer [2021-11-06 02:20:53,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 02:20:53,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 02:20:53,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 02:20:53,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 02:20:53,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:20:51" (1/3) ... [2021-11-06 02:20:53,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9fdd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:20:53, skipping insertion in model container [2021-11-06 02:20:53,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:20:52" (2/3) ... [2021-11-06 02:20:53,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9fdd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:20:53, skipping insertion in model container [2021-11-06 02:20:53,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:20:53" (3/3) ... [2021-11-06 02:20:53,823 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-1.i [2021-11-06 02:20:53,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 02:20:53,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-06 02:20:53,872 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 02:20:53,878 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 02:20:53,879 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-06 02:20:53,903 INFO L276 IsEmpty]: Start isEmpty. Operand has 237 states, 224 states have (on average 1.6696428571428572) internal successors, (374), 236 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:53,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 02:20:53,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:20:53,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 02:20:53,910 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 02:20:53,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:20:53,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1030621672, now seen corresponding path program 1 times [2021-11-06 02:20:53,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:20:53,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021629734] [2021-11-06 02:20:53,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:53,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:20:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:20:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 02:20:54,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:20:54,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021629734] [2021-11-06 02:20:54,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021629734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 02:20:54,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 02:20:54,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 02:20:54,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491526261] [2021-11-06 02:20:54,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:20:54,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 02:20:54,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:20:54,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 02:20:54,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 02:20:54,068 INFO L87 Difference]: Start difference. First operand has 237 states, 224 states have (on average 1.6696428571428572) internal successors, (374), 236 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:54,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:20:54,117 INFO L93 Difference]: Finished difference Result 466 states and 739 transitions. [2021-11-06 02:20:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 02:20:54,119 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-06 02:20:54,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:20:54,128 INFO L225 Difference]: With dead ends: 466 [2021-11-06 02:20:54,128 INFO L226 Difference]: Without dead ends: 227 [2021-11-06 02:20:54,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 02:20:54,134 INFO L933 BasicCegarLoop]: 289 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, 289 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.47ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-06 02:20:54,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 2.47ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-06 02:20:54,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-06 02:20:54,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-06 02:20:54,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 216 states have (on average 1.3194444444444444) internal successors, (285), 226 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:54,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 285 transitions. [2021-11-06 02:20:54,173 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 285 transitions. Word has length 8 [2021-11-06 02:20:54,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:20:54,174 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 285 transitions. [2021-11-06 02:20:54,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:54,174 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 285 transitions. [2021-11-06 02:20:54,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-06 02:20:54,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:20:54,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 02:20:54,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 02:20:54,175 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 02:20:54,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:20:54,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1260005844, now seen corresponding path program 1 times [2021-11-06 02:20:54,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:20:54,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821224550] [2021-11-06 02:20:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:54,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:20:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:20:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 02:20:54,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:20:54,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821224550] [2021-11-06 02:20:54,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821224550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 02:20:54,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 02:20:54,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 02:20:54,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356391622] [2021-11-06 02:20:54,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:20:54,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 02:20:54,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:20:54,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 02:20:54,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 02:20:54,242 INFO L87 Difference]: Start difference. First operand 227 states and 285 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:54,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:20:54,578 INFO L93 Difference]: Finished difference Result 479 states and 601 transitions. [2021-11-06 02:20:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 02:20:54,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-11-06 02:20:54,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:20:54,581 INFO L225 Difference]: With dead ends: 479 [2021-11-06 02:20:54,581 INFO L226 Difference]: Without dead ends: 369 [2021-11-06 02:20:54,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.08ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 02:20:54,583 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 170 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 239.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.07ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 302.92ms IncrementalHoareTripleChecker+Time [2021-11-06 02:20:54,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 700 Invalid, 170 Unknown, 0 Unchecked, 9.07ms Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 302.92ms Time] [2021-11-06 02:20:54,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-11-06 02:20:54,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 229. [2021-11-06 02:20:54,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 218 states have (on average 1.31651376146789) internal successors, (287), 228 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:54,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 287 transitions. [2021-11-06 02:20:54,612 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 287 transitions. Word has length 10 [2021-11-06 02:20:54,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:20:54,612 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 287 transitions. [2021-11-06 02:20:54,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 287 transitions. [2021-11-06 02:20:54,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 02:20:54,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:20:54,614 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] [2021-11-06 02:20:54,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 02:20:54,615 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 02:20:54,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:20:54,615 INFO L85 PathProgramCache]: Analyzing trace with hash -602340381, now seen corresponding path program 1 times [2021-11-06 02:20:54,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:20:54,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063529162] [2021-11-06 02:20:54,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:54,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:20:54,635 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:20:54,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833539730] [2021-11-06 02:20:54,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:54,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:20:54,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:20:54,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 02:20:54,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 02:20:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:20:54,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 02:20:54,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:20:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 02:20:54,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 02:20:54,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:20:54,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063529162] [2021-11-06 02:20:54,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:20:54,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833539730] [2021-11-06 02:20:54,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833539730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 02:20:54,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 02:20:54,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 02:20:54,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502426322] [2021-11-06 02:20:54,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:20:54,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 02:20:54,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:20:54,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 02:20:54,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 02:20:54,962 INFO L87 Difference]: Start difference. First operand 229 states and 287 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:55,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:20:55,017 INFO L93 Difference]: Finished difference Result 475 states and 601 transitions. [2021-11-06 02:20:55,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 02:20:55,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-06 02:20:55,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:20:55,019 INFO L225 Difference]: With dead ends: 475 [2021-11-06 02:20:55,019 INFO L226 Difference]: Without dead ends: 250 [2021-11-06 02:20:55,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 02:20:55,025 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 9 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.11ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.86ms IncrementalHoareTripleChecker+Time [2021-11-06 02:20:55,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 515 Invalid, 72 Unknown, 0 Unchecked, 1.11ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 46.86ms Time] [2021-11-06 02:20:55,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-06 02:20:55,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2021-11-06 02:20:55,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 238 states have (on average 1.2899159663865547) internal successors, (307), 248 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 307 transitions. [2021-11-06 02:20:55,044 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 307 transitions. Word has length 44 [2021-11-06 02:20:55,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:20:55,044 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 307 transitions. [2021-11-06 02:20:55,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:55,045 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 307 transitions. [2021-11-06 02:20:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 02:20:55,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:20:55,047 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] [2021-11-06 02:20:55,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 02:20:55,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:20:55,265 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 02:20:55,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:20:55,266 INFO L85 PathProgramCache]: Analyzing trace with hash -821195099, now seen corresponding path program 1 times [2021-11-06 02:20:55,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:20:55,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528607833] [2021-11-06 02:20:55,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:55,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:20:55,284 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:20:55,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819017318] [2021-11-06 02:20:55,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:55,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:20:55,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:20:55,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 02:20:55,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 02:20:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:20:55,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 02:20:55,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:20:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 02:20:55,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 02:20:55,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:20:55,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528607833] [2021-11-06 02:20:55,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:20:55,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819017318] [2021-11-06 02:20:55,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819017318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 02:20:55,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 02:20:55,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 02:20:55,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446686673] [2021-11-06 02:20:55,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:20:55,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 02:20:55,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:20:55,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 02:20:55,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 02:20:55,571 INFO L87 Difference]: Start difference. First operand 249 states and 307 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:55,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:20:55,644 INFO L93 Difference]: Finished difference Result 487 states and 603 transitions. [2021-11-06 02:20:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 02:20:55,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-06 02:20:55,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:20:55,645 INFO L225 Difference]: With dead ends: 487 [2021-11-06 02:20:55,646 INFO L226 Difference]: Without dead ends: 242 [2021-11-06 02:20:55,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 02:20:55,648 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 273 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.46ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.65ms IncrementalHoareTripleChecker+Time [2021-11-06 02:20:55,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 529 Invalid, 66 Unknown, 0 Unchecked, 2.46ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 56.65ms Time] [2021-11-06 02:20:55,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-06 02:20:55,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 235. [2021-11-06 02:20:55,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 224 states have (on average 1.2767857142857142) internal successors, (286), 234 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:55,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 286 transitions. [2021-11-06 02:20:55,656 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 286 transitions. Word has length 44 [2021-11-06 02:20:55,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:20:55,657 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 286 transitions. [2021-11-06 02:20:55,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:55,657 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 286 transitions. [2021-11-06 02:20:55,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 02:20:55,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:20:55,659 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] [2021-11-06 02:20:55,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 02:20:55,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-06 02:20:55,876 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 02:20:55,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:20:55,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1704043945, now seen corresponding path program 1 times [2021-11-06 02:20:55,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:20:55,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307897422] [2021-11-06 02:20:55,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:55,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:20:55,896 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:20:55,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1126592500] [2021-11-06 02:20:55,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:55,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:20:55,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:20:55,903 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 02:20:55,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 02:20:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:20:56,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 02:20:56,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:20:56,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 02:20:56,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 02:20:56,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:20:56,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307897422] [2021-11-06 02:20:56,154 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:20:56,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126592500] [2021-11-06 02:20:56,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126592500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 02:20:56,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 02:20:56,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 02:20:56,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043423932] [2021-11-06 02:20:56,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:20:56,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 02:20:56,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:20:56,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 02:20:56,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 02:20:56,157 INFO L87 Difference]: Start difference. First operand 235 states and 286 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:56,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:20:56,237 INFO L93 Difference]: Finished difference Result 446 states and 549 transitions. [2021-11-06 02:20:56,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 02:20:56,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-06 02:20:56,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:20:56,239 INFO L225 Difference]: With dead ends: 446 [2021-11-06 02:20:56,239 INFO L226 Difference]: Without dead ends: 444 [2021-11-06 02:20:56,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 02:20:56,241 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 263 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.05ms IncrementalHoareTripleChecker+Time [2021-11-06 02:20:56,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 1289 Invalid, 35 Unknown, 0 Unchecked, 2.53ms Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 63.05ms Time] [2021-11-06 02:20:56,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-06 02:20:56,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 233. [2021-11-06 02:20:56,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 223 states have (on average 1.2735426008968609) internal successors, (284), 232 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:56,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 284 transitions. [2021-11-06 02:20:56,247 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 284 transitions. Word has length 44 [2021-11-06 02:20:56,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:20:56,248 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 284 transitions. [2021-11-06 02:20:56,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:56,248 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 284 transitions. [2021-11-06 02:20:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 02:20:56,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:20:56,252 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] [2021-11-06 02:20:56,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 02:20:56,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:20:56,470 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 02:20:56,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:20:56,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1088553020, now seen corresponding path program 1 times [2021-11-06 02:20:56,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:20:56,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042092862] [2021-11-06 02:20:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:56,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:20:56,485 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:20:56,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [123537030] [2021-11-06 02:20:56,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:56,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:20:56,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:20:56,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 02:20:56,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 02:20:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:20:56,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 02:20:56,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:20:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 02:20:56,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 02:20:56,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:20:56,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042092862] [2021-11-06 02:20:56,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:20:56,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123537030] [2021-11-06 02:20:56,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123537030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 02:20:56,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 02:20:56,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 02:20:56,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781731344] [2021-11-06 02:20:56,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:20:56,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 02:20:56,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:20:56,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 02:20:56,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 02:20:56,752 INFO L87 Difference]: Start difference. First operand 233 states and 284 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:56,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:20:56,854 INFO L93 Difference]: Finished difference Result 940 states and 1155 transitions. [2021-11-06 02:20:56,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 02:20:56,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2021-11-06 02:20:56,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:20:56,859 INFO L225 Difference]: With dead ends: 940 [2021-11-06 02:20:56,859 INFO L226 Difference]: Without dead ends: 711 [2021-11-06 02:20:56,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.97ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 02:20:56,860 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 983 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.35ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.06ms IncrementalHoareTripleChecker+Time [2021-11-06 02:20:56,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 1054 Invalid, 56 Unknown, 0 Unchecked, 3.35ms Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 76.06ms Time] [2021-11-06 02:20:56,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-11-06 02:20:56,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 325. [2021-11-06 02:20:56,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 316 states have (on average 1.25) internal successors, (395), 324 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:56,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 395 transitions. [2021-11-06 02:20:56,871 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 395 transitions. Word has length 51 [2021-11-06 02:20:56,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:20:56,872 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 395 transitions. [2021-11-06 02:20:56,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:56,872 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 395 transitions. [2021-11-06 02:20:56,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 02:20:56,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:20:56,873 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] [2021-11-06 02:20:56,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 02:20:57,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:20:57,092 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 02:20:57,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:20:57,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1193587178, now seen corresponding path program 1 times [2021-11-06 02:20:57,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:20:57,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971274436] [2021-11-06 02:20:57,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:57,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:20:57,107 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:20:57,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572665553] [2021-11-06 02:20:57,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:57,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:20:57,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:20:57,114 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 02:20:57,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 02:20:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:20:57,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 02:20:57,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:20:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 02:20:57,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 02:20:57,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:20:57,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971274436] [2021-11-06 02:20:57,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:20:57,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572665553] [2021-11-06 02:20:57,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572665553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 02:20:57,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 02:20:57,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 02:20:57,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636794254] [2021-11-06 02:20:57,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:20:57,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 02:20:57,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:20:57,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 02:20:57,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 02:20:57,490 INFO L87 Difference]: Start difference. First operand 325 states and 395 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:57,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:20:57,580 INFO L93 Difference]: Finished difference Result 686 states and 832 transitions. [2021-11-06 02:20:57,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 02:20:57,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2021-11-06 02:20:57,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:20:57,582 INFO L225 Difference]: With dead ends: 686 [2021-11-06 02:20:57,582 INFO L226 Difference]: Without dead ends: 365 [2021-11-06 02:20:57,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.92ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 02:20:57,583 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 137 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.15ms IncrementalHoareTripleChecker+Time [2021-11-06 02:20:57,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 548 Invalid, 35 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 78.15ms Time] [2021-11-06 02:20:57,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-06 02:20:57,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 336. [2021-11-06 02:20:57,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 328 states have (on average 1.2560975609756098) internal successors, (412), 335 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:57,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 412 transitions. [2021-11-06 02:20:57,592 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 412 transitions. Word has length 54 [2021-11-06 02:20:57,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:20:57,593 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 412 transitions. [2021-11-06 02:20:57,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:57,593 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 412 transitions. [2021-11-06 02:20:57,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 02:20:57,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:20:57,594 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 02:20:57,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 02:20:57,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:20:57,807 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 02:20:57,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:20:57,808 INFO L85 PathProgramCache]: Analyzing trace with hash 901612414, now seen corresponding path program 1 times [2021-11-06 02:20:57,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:20:57,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509974132] [2021-11-06 02:20:57,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:57,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:20:57,825 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:20:57,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1439838459] [2021-11-06 02:20:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:57,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:20:57,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:20:57,827 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 02:20:57,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 02:20:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:20:58,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 02:20:58,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:20:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 02:20:58,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 02:20:58,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:20:58,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509974132] [2021-11-06 02:20:58,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:20:58,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439838459] [2021-11-06 02:20:58,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439838459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 02:20:58,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 02:20:58,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 02:20:58,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676775535] [2021-11-06 02:20:58,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:20:58,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 02:20:58,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:20:58,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 02:20:58,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 02:20:58,131 INFO L87 Difference]: Start difference. First operand 336 states and 412 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:20:58,212 INFO L93 Difference]: Finished difference Result 626 states and 773 transitions. [2021-11-06 02:20:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 02:20:58,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-06 02:20:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:20:58,214 INFO L225 Difference]: With dead ends: 626 [2021-11-06 02:20:58,214 INFO L226 Difference]: Without dead ends: 342 [2021-11-06 02:20:58,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.63ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 02:20:58,215 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 16 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.40ms IncrementalHoareTripleChecker+Time [2021-11-06 02:20:58,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 775 Invalid, 25 Unknown, 0 Unchecked, 1.18ms Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 72.40ms Time] [2021-11-06 02:20:58,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-06 02:20:58,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 336. [2021-11-06 02:20:58,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 328 states have (on average 1.2530487804878048) internal successors, (411), 335 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:58,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 411 transitions. [2021-11-06 02:20:58,224 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 411 transitions. Word has length 78 [2021-11-06 02:20:58,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:20:58,224 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 411 transitions. [2021-11-06 02:20:58,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:58,225 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 411 transitions. [2021-11-06 02:20:58,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 02:20:58,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:20:58,226 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 02:20:58,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 02:20:58,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:20:58,448 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 02:20:58,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:20:58,448 INFO L85 PathProgramCache]: Analyzing trace with hash -611683268, now seen corresponding path program 1 times [2021-11-06 02:20:58,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:20:58,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730424260] [2021-11-06 02:20:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:58,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:20:58,460 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:20:58,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343446094] [2021-11-06 02:20:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:58,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:20:58,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:20:58,462 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 02:20:58,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 02:20:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:20:58,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 02:20:58,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:20:58,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 02:20:58,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-06 02:20:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 02:20:58,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 02:20:58,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:20:58,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730424260] [2021-11-06 02:20:58,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:20:58,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343446094] [2021-11-06 02:20:58,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343446094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 02:20:58,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 02:20:58,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 02:20:58,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733391587] [2021-11-06 02:20:58,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:20:58,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 02:20:58,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:20:58,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 02:20:58,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 02:20:58,803 INFO L87 Difference]: Start difference. First operand 336 states and 411 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:59,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:20:59,040 INFO L93 Difference]: Finished difference Result 447 states and 551 transitions. [2021-11-06 02:20:59,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 02:20:59,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-06 02:20:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:20:59,042 INFO L225 Difference]: With dead ends: 447 [2021-11-06 02:20:59,042 INFO L226 Difference]: Without dead ends: 431 [2021-11-06 02:20:59,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.89ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 02:20:59,042 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 147 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 184.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.43ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 217.13ms IncrementalHoareTripleChecker+Time [2021-11-06 02:20:59,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 670 Invalid, 149 Unknown, 0 Unchecked, 2.43ms Time], IncrementalHoareTripleChecker [3 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 217.13ms Time] [2021-11-06 02:20:59,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-06 02:20:59,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 338. [2021-11-06 02:20:59,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 330 states have (on average 1.2515151515151515) internal successors, (413), 337 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:59,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 413 transitions. [2021-11-06 02:20:59,051 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 413 transitions. Word has length 79 [2021-11-06 02:20:59,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:20:59,051 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 413 transitions. [2021-11-06 02:20:59,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:59,052 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 413 transitions. [2021-11-06 02:20:59,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 02:20:59,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:20:59,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 02:20:59,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 02:20:59,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:20:59,273 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 02:20:59,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:20:59,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1201768388, now seen corresponding path program 1 times [2021-11-06 02:20:59,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:20:59,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649633920] [2021-11-06 02:20:59,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:59,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:20:59,292 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:20:59,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179792495] [2021-11-06 02:20:59,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:59,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:20:59,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:20:59,294 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 02:20:59,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 02:20:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:20:59,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-06 02:20:59,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:20:59,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 02:20:59,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 02:20:59,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:20:59,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649633920] [2021-11-06 02:20:59,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:20:59,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179792495] [2021-11-06 02:20:59,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179792495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 02:20:59,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 02:20:59,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 02:20:59,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526321559] [2021-11-06 02:20:59,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:20:59,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 02:20:59,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:20:59,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 02:20:59,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 02:20:59,666 INFO L87 Difference]: Start difference. First operand 338 states and 413 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:59,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:20:59,723 INFO L93 Difference]: Finished difference Result 625 states and 771 transitions. [2021-11-06 02:20:59,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 02:20:59,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-06 02:20:59,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:20:59,725 INFO L225 Difference]: With dead ends: 625 [2021-11-06 02:20:59,725 INFO L226 Difference]: Without dead ends: 339 [2021-11-06 02:20:59,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.41ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 02:20:59,726 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 263 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.04ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.53ms IncrementalHoareTripleChecker+Time [2021-11-06 02:20:59,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 966 Invalid, 29 Unknown, 0 Unchecked, 2.04ms Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 34.53ms Time] [2021-11-06 02:20:59,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-06 02:20:59,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2021-11-06 02:20:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 331 states have (on average 1.2507552870090635) internal successors, (414), 338 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 414 transitions. [2021-11-06 02:20:59,736 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 414 transitions. Word has length 81 [2021-11-06 02:20:59,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:20:59,736 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 414 transitions. [2021-11-06 02:20:59,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:20:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 414 transitions. [2021-11-06 02:20:59,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 02:20:59,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:20:59,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 02:20:59,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 02:20:59,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-06 02:20:59,952 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 02:20:59,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:20:59,952 INFO L85 PathProgramCache]: Analyzing trace with hash -169971840, now seen corresponding path program 1 times [2021-11-06 02:20:59,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:20:59,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887842329] [2021-11-06 02:20:59,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:59,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:20:59,967 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:20:59,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968135099] [2021-11-06 02:20:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:20:59,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:20:59,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:20:59,969 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 02:20:59,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 02:21:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:21:00,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-06 02:21:00,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:21:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 02:21:00,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 02:21:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 02:21:00,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:21:00,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887842329] [2021-11-06 02:21:00,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:21:00,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968135099] [2021-11-06 02:21:00,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968135099] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 02:21:00,512 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 02:21:00,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2021-11-06 02:21:00,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754151523] [2021-11-06 02:21:00,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-06 02:21:00,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 02:21:00,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:21:00,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 02:21:00,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-06 02:21:00,515 INFO L87 Difference]: Start difference. First operand 339 states and 414 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:21:01,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:21:01,102 INFO L93 Difference]: Finished difference Result 631 states and 781 transitions. [2021-11-06 02:21:01,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 02:21:01,103 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 02:21:01,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:21:01,105 INFO L225 Difference]: With dead ends: 631 [2021-11-06 02:21:01,105 INFO L226 Difference]: Without dead ends: 344 [2021-11-06 02:21:01,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 162.67ms TimeCoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2021-11-06 02:21:01,106 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 781 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 372.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.57ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 443.09ms IncrementalHoareTripleChecker+Time [2021-11-06 02:21:01,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 1668 Invalid, 313 Unknown, 0 Unchecked, 4.57ms Time], IncrementalHoareTripleChecker [35 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 443.09ms Time] [2021-11-06 02:21:01,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-06 02:21:01,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-11-06 02:21:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 336 states have (on average 1.2470238095238095) internal successors, (419), 343 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:21:01,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 419 transitions. [2021-11-06 02:21:01,117 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 419 transitions. Word has length 82 [2021-11-06 02:21:01,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:21:01,117 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 419 transitions. [2021-11-06 02:21:01,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:21:01,118 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 419 transitions. [2021-11-06 02:21:01,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 02:21:01,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:21:01,118 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 02:21:01,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-06 02:21:01,335 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 [2021-11-06 02:21:01,336 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 02:21:01,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:21:01,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1893525028, now seen corresponding path program 1 times [2021-11-06 02:21:01,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:21:01,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959006270] [2021-11-06 02:21:01,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:01,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:21:01,349 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:21:01,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510986842] [2021-11-06 02:21:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:01,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:21:01,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:21:01,354 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) [2021-11-06 02:21:01,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 02:21:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:21:01,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-06 02:21:01,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:21:01,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 02:21:01,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 02:21:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 02:21:01,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:21:01,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959006270] [2021-11-06 02:21:01,953 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:21:01,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510986842] [2021-11-06 02:21:01,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510986842] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 02:21:01,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 02:21:01,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2021-11-06 02:21:01,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025868563] [2021-11-06 02:21:01,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-06 02:21:01,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 02:21:01,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:21:01,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 02:21:01,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-06 02:21:01,956 INFO L87 Difference]: Start difference. First operand 344 states and 419 transitions. Second operand has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:21:03,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:21:03,187 INFO L93 Difference]: Finished difference Result 681 states and 840 transitions. [2021-11-06 02:21:03,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-06 02:21:03,187 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 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 87 [2021-11-06 02:21:03,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:21:03,189 INFO L225 Difference]: With dead ends: 681 [2021-11-06 02:21:03,189 INFO L226 Difference]: Without dead ends: 347 [2021-11-06 02:21:03,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 967.29ms TimeCoverageRelationStatistics Valid=317, Invalid=739, Unknown=0, NotChecked=0, Total=1056 [2021-11-06 02:21:03,190 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 520 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 285.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.39ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 334.60ms IncrementalHoareTripleChecker+Time [2021-11-06 02:21:03,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 1944 Invalid, 356 Unknown, 0 Unchecked, 3.39ms Time], IncrementalHoareTripleChecker [68 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 334.60ms Time] [2021-11-06 02:21:03,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-11-06 02:21:03,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2021-11-06 02:21:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 339 states have (on average 1.238938053097345) internal successors, (420), 346 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:21:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 420 transitions. [2021-11-06 02:21:03,203 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 420 transitions. Word has length 87 [2021-11-06 02:21:03,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:21:03,203 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 420 transitions. [2021-11-06 02:21:03,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 02:21:03,203 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 420 transitions. [2021-11-06 02:21:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 02:21:03,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:21:03,204 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 02:21:03,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-06 02:21:03,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-06 02:21:03,423 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 02:21:03,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:21:03,424 INFO L85 PathProgramCache]: Analyzing trace with hash -887407617, now seen corresponding path program 2 times [2021-11-06 02:21:03,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:21:03,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571953763] [2021-11-06 02:21:03,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:03,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:21:03,446 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:21:03,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045449926] [2021-11-06 02:21:03,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 02:21:03,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:21:03,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:21:03,448 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 02:21:03,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process Killed by 15