./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.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 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 14:35:12,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 14:35:12,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 14:35:12,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 14:35:12,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 14:35:12,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 14:35:12,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 14:35:12,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 14:35:12,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 14:35:12,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 14:35:12,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 14:35:12,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 14:35:12,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 14:35:12,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 14:35:12,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 14:35:12,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 14:35:12,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 14:35:12,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 14:35:12,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 14:35:12,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 14:35:12,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 14:35:12,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 14:35:12,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 14:35:12,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 14:35:12,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 14:35:12,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 14:35:12,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 14:35:12,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 14:35:12,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 14:35:12,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 14:35:12,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 14:35:12,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 14:35:12,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 14:35:12,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 14:35:12,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 14:35:12,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 14:35:12,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 14:35:12,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 14:35:12,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 14:35:12,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 14:35:12,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 14:35:12,547 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-04 14:35:12,583 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 14:35:12,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 14:35:12,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 14:35:12,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 14:35:12,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 14:35:12,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 14:35:12,586 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 14:35:12,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 14:35:12,586 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-04 14:35:12,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 14:35:12,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-04 14:35:12,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 14:35:12,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 14:35:12,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 14:35:12,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 14:35:12,588 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-04 14:35:12,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 14:35:12,589 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 14:35:12,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 14:35:12,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 14:35:12,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 14:35:12,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 14:35:12,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 14:35:12,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 14:35:12,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 14:35:12,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 14:35:12,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 14:35:12,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 14:35:12,591 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 14:35:12,592 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 14:35:12,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 14:35:12,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 14:35:12,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2021-11-04 14:35:12,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 14:35:12,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 14:35:12,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 14:35:12,864 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 14:35:12,865 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 14:35:12,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2021-11-04 14:35:12,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e6a21145/2de8163628544099a071072092d404cf/FLAGae288bb6c [2021-11-04 14:35:13,450 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 14:35:13,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2021-11-04 14:35:13,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e6a21145/2de8163628544099a071072092d404cf/FLAGae288bb6c [2021-11-04 14:35:13,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e6a21145/2de8163628544099a071072092d404cf [2021-11-04 14:35:13,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 14:35:13,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 14:35:13,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 14:35:13,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 14:35:13,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 14:35:13,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 02:35:13" (1/1) ... [2021-11-04 14:35:13,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77f408b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:35:13, skipping insertion in model container [2021-11-04 14:35:13,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 02:35:13" (1/1) ... [2021-11-04 14:35:13,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 14:35:13,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 14:35:14,310 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_BER_test4-1.i[33021,33034] [2021-11-04 14:35:14,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 14:35:14,470 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 14:35:14,505 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2021-11-04 14:35:14,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 14:35:14,598 INFO L208 MainTranslator]: Completed translation [2021-11-04 14:35:14,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:35:14 WrapperNode [2021-11-04 14:35:14,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 14:35:14,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 14:35:14,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 14:35:14,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 14:35:14,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:35:14" (1/1) ... [2021-11-04 14:35:14,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:35:14" (1/1) ... [2021-11-04 14:35:14,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 14:35:14,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 14:35:14,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 14:35:14,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 14:35:14,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:35:14" (1/1) ... [2021-11-04 14:35:14,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:35:14" (1/1) ... [2021-11-04 14:35:14,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:35:14" (1/1) ... [2021-11-04 14:35:14,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:35:14" (1/1) ... [2021-11-04 14:35:14,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:35:14" (1/1) ... [2021-11-04 14:35:14,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:35:14" (1/1) ... [2021-11-04 14:35:14,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:35:14" (1/1) ... [2021-11-04 14:35:14,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 14:35:14,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 14:35:14,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 14:35:14,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 14:35:14,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:35:14" (1/1) ... [2021-11-04 14:35:14,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 14:35:14,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:35:14,858 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) [2021-11-04 14:35:14,887 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 [2021-11-04 14:35:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 14:35:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 14:35:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 14:35:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 14:35:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 14:35:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 14:35:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 14:35:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 14:35:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 14:35:14,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 14:35:15,578 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 14:35:15,579 INFO L299 CfgBuilder]: Removed 98 assume(true) statements. [2021-11-04 14:35:15,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 02:35:15 BoogieIcfgContainer [2021-11-04 14:35:15,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 14:35:15,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 14:35:15,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 14:35:15,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 14:35:15,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 02:35:13" (1/3) ... [2021-11-04 14:35:15,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b2d086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 02:35:15, skipping insertion in model container [2021-11-04 14:35:15,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:35:14" (2/3) ... [2021-11-04 14:35:15,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b2d086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 02:35:15, skipping insertion in model container [2021-11-04 14:35:15,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 02:35:15" (3/3) ... [2021-11-04 14:35:15,588 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-1.i [2021-11-04 14:35:15,592 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 14:35:15,592 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-04 14:35:15,632 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 14:35:15,637 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 [2021-11-04 14:35:15,638 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-04 14:35:15,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 210 states have (on average 1.7285714285714286) internal successors, (363), 220 states have internal predecessors, (363), 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) [2021-11-04 14:35:15,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-04 14:35:15,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:35:15,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:35:15,677 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 14:35:15,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:35:15,682 INFO L85 PathProgramCache]: Analyzing trace with hash 889550569, now seen corresponding path program 1 times [2021-11-04 14:35:15,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:35:15,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347284558] [2021-11-04 14:35:15,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:15,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:35:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:35:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:35:15,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:35:15,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347284558] [2021-11-04 14:35:15,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347284558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:35:15,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:35:15,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 14:35:15,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234078166] [2021-11-04 14:35:15,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:35:15,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 14:35:15,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:35:15,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 14:35:15,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 14:35:15,875 INFO L87 Difference]: Start difference. First operand has 221 states, 210 states have (on average 1.7285714285714286) internal successors, (363), 220 states have internal predecessors, (363), 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) [2021-11-04 14:35:16,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:35:16,456 INFO L93 Difference]: Finished difference Result 440 states and 724 transitions. [2021-11-04 14:35:16,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 14:35:16,458 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 [2021-11-04 14:35:16,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:35:16,475 INFO L225 Difference]: With dead ends: 440 [2021-11-04 14:35:16,476 INFO L226 Difference]: Without dead ends: 217 [2021-11-04 14:35:16,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 14:35:16,485 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 450.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.82ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 535.99ms IncrementalHoareTripleChecker+Time [2021-11-04 14:35:16,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 286 Unknown, 0 Unchecked, 1.82ms Time], IncrementalHoareTripleChecker [0 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 535.99ms Time] [2021-11-04 14:35:16,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-04 14:35:16,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-04 14:35:16,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 207 states have (on average 1.3623188405797102) internal successors, (282), 216 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:16,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 282 transitions. [2021-11-04 14:35:16,530 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 282 transitions. Word has length 8 [2021-11-04 14:35:16,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:35:16,534 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 282 transitions. [2021-11-04 14:35:16,534 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) [2021-11-04 14:35:16,534 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 282 transitions. [2021-11-04 14:35:16,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-04 14:35:16,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:35:16,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:35:16,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 14:35:16,536 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 14:35:16,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:35:16,538 INFO L85 PathProgramCache]: Analyzing trace with hash 921152950, now seen corresponding path program 1 times [2021-11-04 14:35:16,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:35:16,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681921445] [2021-11-04 14:35:16,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:16,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:35:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:35:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:35:16,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:35:16,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681921445] [2021-11-04 14:35:16,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681921445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:35:16,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:35:16,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:35:16,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657418703] [2021-11-04 14:35:16,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:35:16,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:35:16,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:35:16,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:35:16,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:35:16,608 INFO L87 Difference]: Start difference. First operand 217 states and 282 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:17,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:35:17,488 INFO L93 Difference]: Finished difference Result 432 states and 562 transitions. [2021-11-04 14:35:17,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:35:17,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-04 14:35:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:35:17,491 INFO L225 Difference]: With dead ends: 432 [2021-11-04 14:35:17,491 INFO L226 Difference]: Without dead ends: 387 [2021-11-04 14:35:17,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:35:17,493 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 223 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 689.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 844.21ms IncrementalHoareTripleChecker+Time [2021-11-04 14:35:17,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 0 Invalid, 563 Unknown, 0 Unchecked, 4.40ms Time], IncrementalHoareTripleChecker [0 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 844.21ms Time] [2021-11-04 14:35:17,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-04 14:35:17,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 218. [2021-11-04 14:35:17,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 208 states have (on average 1.3605769230769231) internal successors, (283), 217 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:17,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 283 transitions. [2021-11-04 14:35:17,515 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 283 transitions. Word has length 8 [2021-11-04 14:35:17,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:35:17,516 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 283 transitions. [2021-11-04 14:35:17,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:17,516 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 283 transitions. [2021-11-04 14:35:17,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 14:35:17,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:35:17,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:35:17,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 14:35:17,520 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 14:35:17,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:35:17,521 INFO L85 PathProgramCache]: Analyzing trace with hash -137963571, now seen corresponding path program 1 times [2021-11-04 14:35:17,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:35:17,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403951004] [2021-11-04 14:35:17,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:17,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:35:17,543 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:35:17,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513879199] [2021-11-04 14:35:17,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:17,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:35:17,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:35:17,548 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) [2021-11-04 14:35:17,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 14:35:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:35:17,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:35:17,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:35:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:35:18,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:35:18,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:35:18,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403951004] [2021-11-04 14:35:18,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:35:18,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513879199] [2021-11-04 14:35:18,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513879199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:35:18,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:35:18,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:35:18,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816115728] [2021-11-04 14:35:18,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:35:18,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:35:18,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:35:18,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:35:18,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:35:18,035 INFO L87 Difference]: Start difference. First operand 218 states and 283 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:18,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:35:18,714 INFO L93 Difference]: Finished difference Result 454 states and 594 transitions. [2021-11-04 14:35:18,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:35:18,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-04 14:35:18,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:35:18,716 INFO L225 Difference]: With dead ends: 454 [2021-11-04 14:35:18,716 INFO L226 Difference]: Without dead ends: 239 [2021-11-04 14:35:18,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:35:18,718 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 560.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.72ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 660.94ms IncrementalHoareTripleChecker+Time [2021-11-04 14:35:18,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 581 Unknown, 0 Unchecked, 1.72ms Time], IncrementalHoareTripleChecker [28 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 660.94ms Time] [2021-11-04 14:35:18,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-04 14:35:18,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-11-04 14:35:18,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 228 states have (on average 1.3289473684210527) internal successors, (303), 237 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:18,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 303 transitions. [2021-11-04 14:35:18,734 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 303 transitions. Word has length 106 [2021-11-04 14:35:18,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:35:18,734 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 303 transitions. [2021-11-04 14:35:18,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:18,735 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 303 transitions. [2021-11-04 14:35:18,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 14:35:18,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:35:18,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:35:18,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-04 14:35:18,965 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 [2021-11-04 14:35:18,966 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 14:35:18,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:35:18,966 INFO L85 PathProgramCache]: Analyzing trace with hash 62310097, now seen corresponding path program 1 times [2021-11-04 14:35:18,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:35:18,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079382796] [2021-11-04 14:35:18,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:18,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:35:19,014 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:35:19,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164675402] [2021-11-04 14:35:19,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:19,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:35:19,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:35:19,019 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) [2021-11-04 14:35:19,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 14:35:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:35:19,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:35:19,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:35:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:35:19,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:35:19,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:35:19,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079382796] [2021-11-04 14:35:19,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:35:19,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164675402] [2021-11-04 14:35:19,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164675402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:35:19,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:35:19,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:35:19,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837503000] [2021-11-04 14:35:19,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:35:19,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:35:19,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:35:19,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:35:19,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:35:19,378 INFO L87 Difference]: Start difference. First operand 238 states and 303 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:19,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:35:19,884 INFO L93 Difference]: Finished difference Result 494 states and 634 transitions. [2021-11-04 14:35:19,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:35:19,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-04 14:35:19,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:35:19,895 INFO L225 Difference]: With dead ends: 494 [2021-11-04 14:35:19,895 INFO L226 Difference]: Without dead ends: 259 [2021-11-04 14:35:19,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:35:19,897 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 402.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.69ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 491.45ms IncrementalHoareTripleChecker+Time [2021-11-04 14:35:19,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 581 Unknown, 0 Unchecked, 1.69ms Time], IncrementalHoareTripleChecker [28 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 491.45ms Time] [2021-11-04 14:35:19,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-04 14:35:19,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2021-11-04 14:35:19,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 248 states have (on average 1.3024193548387097) internal successors, (323), 257 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:19,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 323 transitions. [2021-11-04 14:35:19,926 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 323 transitions. Word has length 106 [2021-11-04 14:35:19,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:35:19,927 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 323 transitions. [2021-11-04 14:35:19,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:19,927 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 323 transitions. [2021-11-04 14:35:19,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 14:35:19,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:35:19,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:35:19,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 14:35:20,139 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 [2021-11-04 14:35:20,140 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 14:35:20,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:35:20,140 INFO L85 PathProgramCache]: Analyzing trace with hash -426500019, now seen corresponding path program 1 times [2021-11-04 14:35:20,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:35:20,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363324505] [2021-11-04 14:35:20,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:20,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:35:20,158 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:35:20,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379050680] [2021-11-04 14:35:20,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:20,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:35:20,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:35:20,162 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) [2021-11-04 14:35:20,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 14:35:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:35:20,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:35:20,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:35:20,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:35:20,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:35:20,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:35:20,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363324505] [2021-11-04 14:35:20,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:35:20,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379050680] [2021-11-04 14:35:20,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379050680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:35:20,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:35:20,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:35:20,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990407266] [2021-11-04 14:35:20,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:35:20,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:35:20,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:35:20,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:35:20,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:35:20,532 INFO L87 Difference]: Start difference. First operand 258 states and 323 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:21,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:35:21,145 INFO L93 Difference]: Finished difference Result 505 states and 635 transitions. [2021-11-04 14:35:21,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:35:21,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-04 14:35:21,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:35:21,147 INFO L225 Difference]: With dead ends: 505 [2021-11-04 14:35:21,147 INFO L226 Difference]: Without dead ends: 250 [2021-11-04 14:35:21,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.70ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:35:21,148 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 270 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 502.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.92ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 590.72ms IncrementalHoareTripleChecker+Time [2021-11-04 14:35:21,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 0 Invalid, 583 Unknown, 0 Unchecked, 1.92ms Time], IncrementalHoareTripleChecker [24 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 590.72ms Time] [2021-11-04 14:35:21,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-04 14:35:21,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2021-11-04 14:35:21,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 234 states have (on average 1.2905982905982907) internal successors, (302), 243 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:21,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 302 transitions. [2021-11-04 14:35:21,154 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 302 transitions. Word has length 106 [2021-11-04 14:35:21,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:35:21,155 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 302 transitions. [2021-11-04 14:35:21,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:21,159 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 302 transitions. [2021-11-04 14:35:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 14:35:21,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:35:21,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:35:21,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-04 14:35:21,377 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 [2021-11-04 14:35:21,377 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 14:35:21,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:35:21,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1791075329, now seen corresponding path program 1 times [2021-11-04 14:35:21,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:35:21,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052977031] [2021-11-04 14:35:21,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:21,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:35:21,391 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:35:21,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523177991] [2021-11-04 14:35:21,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:21,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:35:21,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:35:21,393 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) [2021-11-04 14:35:21,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 14:35:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:35:21,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:35:21,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:35:21,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:35:21,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:35:21,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:35:21,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052977031] [2021-11-04 14:35:21,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:35:21,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523177991] [2021-11-04 14:35:21,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523177991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:35:21,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:35:21,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:35:21,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516201799] [2021-11-04 14:35:21,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:35:21,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:35:21,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:35:21,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:35:21,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:35:21,726 INFO L87 Difference]: Start difference. First operand 244 states and 302 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:23,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:35:23,514 INFO L93 Difference]: Finished difference Result 566 states and 702 transitions. [2021-11-04 14:35:23,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:35:23,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-04 14:35:23,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:35:23,517 INFO L225 Difference]: With dead ends: 566 [2021-11-04 14:35:23,517 INFO L226 Difference]: Without dead ends: 325 [2021-11-04 14:35:23,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.85ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:35:23,518 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 263 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1631.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.51ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1767.41ms IncrementalHoareTripleChecker+Time [2021-11-04 14:35:23,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 0 Invalid, 878 Unknown, 0 Unchecked, 2.51ms Time], IncrementalHoareTripleChecker [24 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 1767.41ms Time] [2021-11-04 14:35:23,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-04 14:35:23,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 230. [2021-11-04 14:35:23,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 220 states have (on average 1.2772727272727273) internal successors, (281), 229 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:23,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 281 transitions. [2021-11-04 14:35:23,525 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 281 transitions. Word has length 106 [2021-11-04 14:35:23,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:35:23,525 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 281 transitions. [2021-11-04 14:35:23,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:23,526 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 281 transitions. [2021-11-04 14:35:23,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 14:35:23,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:35:23,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:35:23,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-04 14:35:23,747 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 [2021-11-04 14:35:23,748 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 14:35:23,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:35:23,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1369189005, now seen corresponding path program 1 times [2021-11-04 14:35:23,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:35:23,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739767360] [2021-11-04 14:35:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:23,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:35:23,760 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:35:23,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725214568] [2021-11-04 14:35:23,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:23,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:35:23,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:35:23,761 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) [2021-11-04 14:35:23,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-04 14:35:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:35:23,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:35:23,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:35:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:35:24,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:35:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:35:24,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:35:24,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739767360] [2021-11-04 14:35:24,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:35:24,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725214568] [2021-11-04 14:35:24,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725214568] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:35:24,375 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:35:24,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-04 14:35:24,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506269841] [2021-11-04 14:35:24,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:35:24,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 14:35:24,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:35:24,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 14:35:24,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 14:35:24,377 INFO L87 Difference]: Start difference. First operand 230 states and 281 transitions. Second operand has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:25,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:35:25,803 INFO L93 Difference]: Finished difference Result 821 states and 1005 transitions. [2021-11-04 14:35:25,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 14:35:25,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-04 14:35:25,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:35:25,808 INFO L225 Difference]: With dead ends: 821 [2021-11-04 14:35:25,808 INFO L226 Difference]: Without dead ends: 776 [2021-11-04 14:35:25,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.58ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 14:35:25,809 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 948 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1163.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.81ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1383.57ms IncrementalHoareTripleChecker+Time [2021-11-04 14:35:25,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 0 Invalid, 1074 Unknown, 0 Unchecked, 4.81ms Time], IncrementalHoareTripleChecker [4 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 1383.57ms Time] [2021-11-04 14:35:25,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-11-04 14:35:25,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 776. [2021-11-04 14:35:25,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 766 states have (on average 1.2362924281984333) internal successors, (947), 775 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 947 transitions. [2021-11-04 14:35:25,828 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 947 transitions. Word has length 106 [2021-11-04 14:35:25,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:35:25,829 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 947 transitions. [2021-11-04 14:35:25,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:25,829 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 947 transitions. [2021-11-04 14:35:25,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2021-11-04 14:35:25,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:35:25,834 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:35:25,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-04 14:35:26,041 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 [2021-11-04 14:35:26,041 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 14:35:26,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:35:26,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1181109906, now seen corresponding path program 2 times [2021-11-04 14:35:26,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:35:26,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248848213] [2021-11-04 14:35:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:26,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:35:26,073 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:35:26,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168690554] [2021-11-04 14:35:26,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 14:35:26,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:35:26,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:35:26,075 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) [2021-11-04 14:35:26,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-04 14:35:26,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-04 14:35:26,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:35:26,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-04 14:35:26,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:35:27,809 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2021-11-04 14:35:27,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:35:27,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:35:27,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248848213] [2021-11-04 14:35:27,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:35:27,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168690554] [2021-11-04 14:35:27,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168690554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:35:27,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:35:27,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:35:27,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899565687] [2021-11-04 14:35:27,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:35:27,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:35:27,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:35:27,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:35:27,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:35:27,812 INFO L87 Difference]: Start difference. First operand 776 states and 947 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:28,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:35:28,605 INFO L93 Difference]: Finished difference Result 1405 states and 1719 transitions. [2021-11-04 14:35:28,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:35:28,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 400 [2021-11-04 14:35:28,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:35:28,608 INFO L225 Difference]: With dead ends: 1405 [2021-11-04 14:35:28,608 INFO L226 Difference]: Without dead ends: 774 [2021-11-04 14:35:28,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.82ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:35:28,610 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 75 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 652.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.81ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 771.70ms IncrementalHoareTripleChecker+Time [2021-11-04 14:35:28,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 0 Invalid, 794 Unknown, 0 Unchecked, 1.81ms Time], IncrementalHoareTripleChecker [2 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 771.70ms Time] [2021-11-04 14:35:28,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-04 14:35:28,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2021-11-04 14:35:28,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 764 states have (on average 1.2356020942408377) internal successors, (944), 773 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:28,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 944 transitions. [2021-11-04 14:35:28,626 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 944 transitions. Word has length 400 [2021-11-04 14:35:28,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:35:28,626 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 944 transitions. [2021-11-04 14:35:28,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:35:28,627 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 944 transitions. [2021-11-04 14:35:28,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-04 14:35:28,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:35:28,632 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:35:28,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-04 14:35:28,847 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 [2021-11-04 14:35:28,847 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 14:35:28,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:35:28,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1217332562, now seen corresponding path program 1 times [2021-11-04 14:35:28,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:35:28,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436898300] [2021-11-04 14:35:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:28,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:35:28,875 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:35:28,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878884499] [2021-11-04 14:35:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:28,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:35:28,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:35:28,878 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) [2021-11-04 14:35:28,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-04 14:35:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:35:29,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:35:29,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:35:29,705 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-11-04 14:35:29,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:35:29,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:35:29,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436898300] [2021-11-04 14:35:29,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:35:29,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878884499] [2021-11-04 14:35:29,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878884499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:35:29,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:35:29,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:35:29,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241625491] [2021-11-04 14:35:29,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:35:29,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:35:29,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:35:29,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:35:29,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:35:29,708 INFO L87 Difference]: Start difference. First operand 774 states and 944 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2021-11-04 14:35:30,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:35:30,289 INFO L93 Difference]: Finished difference Result 1512 states and 1861 transitions. [2021-11-04 14:35:30,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:35:30,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 407 [2021-11-04 14:35:30,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:35:30,293 INFO L225 Difference]: With dead ends: 1512 [2021-11-04 14:35:30,293 INFO L226 Difference]: Without dead ends: 790 [2021-11-04 14:35:30,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:35:30,294 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 463.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.08ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 563.78ms IncrementalHoareTripleChecker+Time [2021-11-04 14:35:30,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 538 Unknown, 0 Unchecked, 1.08ms Time], IncrementalHoareTripleChecker [6 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 563.78ms Time] [2021-11-04 14:35:30,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-11-04 14:35:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 790. [2021-11-04 14:35:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 780 states have (on average 1.2307692307692308) internal successors, (960), 789 states have internal predecessors, (960), 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) [2021-11-04 14:35:30,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 960 transitions. [2021-11-04 14:35:30,312 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 960 transitions. Word has length 407 [2021-11-04 14:35:30,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:35:30,315 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 960 transitions. [2021-11-04 14:35:30,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2021-11-04 14:35:30,315 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 960 transitions. [2021-11-04 14:35:30,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-11-04 14:35:30,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:35:30,318 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:35:30,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-04 14:35:30,533 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 [2021-11-04 14:35:30,534 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 14:35:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:35:30,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1245585389, now seen corresponding path program 1 times [2021-11-04 14:35:30,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:35:30,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993746702] [2021-11-04 14:35:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:30,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:35:30,569 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:35:30,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804514300] [2021-11-04 14:35:30,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:30,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:35:30,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:35:30,571 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) [2021-11-04 14:35:30,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-04 14:35:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:35:30,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 1136 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 14:35:30,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:35:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 250 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-04 14:35:31,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:35:31,960 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 250 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-04 14:35:31,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:35:31,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993746702] [2021-11-04 14:35:31,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:35:31,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804514300] [2021-11-04 14:35:31,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804514300] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:35:31,961 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:35:31,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-04 14:35:31,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414408772] [2021-11-04 14:35:31,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:35:31,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 14:35:31,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:35:31,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 14:35:31,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 14:35:31,963 INFO L87 Difference]: Start difference. First operand 790 states and 960 transitions. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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) [2021-11-04 14:35:32,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:35:32,847 INFO L93 Difference]: Finished difference Result 1575 states and 1956 transitions. [2021-11-04 14:35:32,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 14:35:32,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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 409 [2021-11-04 14:35:32,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:35:32,850 INFO L225 Difference]: With dead ends: 1575 [2021-11-04 14:35:32,850 INFO L226 Difference]: Without dead ends: 838 [2021-11-04 14:35:32,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 812 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.37ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 14:35:32,852 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 726.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.17ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 863.85ms IncrementalHoareTripleChecker+Time [2021-11-04 14:35:32,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1091 Unknown, 0 Unchecked, 2.17ms Time], IncrementalHoareTripleChecker [27 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 863.85ms Time] [2021-11-04 14:35:32,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-11-04 14:35:32,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2021-11-04 14:35:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 828 states have (on average 1.2173913043478262) internal successors, (1008), 837 states have internal predecessors, (1008), 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) [2021-11-04 14:35:32,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1008 transitions. [2021-11-04 14:35:32,870 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1008 transitions. Word has length 409 [2021-11-04 14:35:32,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:35:32,871 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1008 transitions. [2021-11-04 14:35:32,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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) [2021-11-04 14:35:32,871 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1008 transitions. [2021-11-04 14:35:32,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2021-11-04 14:35:32,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:35:32,874 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:35:32,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-04 14:35:33,095 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 [2021-11-04 14:35:33,095 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 14:35:33,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:35:33,096 INFO L85 PathProgramCache]: Analyzing trace with hash 354957970, now seen corresponding path program 2 times [2021-11-04 14:35:33,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:35:33,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233479360] [2021-11-04 14:35:33,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:33,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:35:33,111 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:35:33,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544455173] [2021-11-04 14:35:33,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 14:35:33,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:35:33,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:35:33,113 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) [2021-11-04 14:35:33,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-04 14:35:33,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 14:35:33,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:35:33,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-04 14:35:33,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:35:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 250 proven. 10 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-04 14:35:33,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:35:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 250 proven. 10 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-04 14:35:34,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:35:34,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233479360] [2021-11-04 14:35:34,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:35:34,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544455173] [2021-11-04 14:35:34,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544455173] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:35:34,524 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:35:34,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-04 14:35:34,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237373212] [2021-11-04 14:35:34,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:35:34,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-04 14:35:34,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:35:34,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-04 14:35:34,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 14:35:34,526 INFO L87 Difference]: Start difference. First operand 838 states and 1008 transitions. Second operand has 12 states, 12 states have (on average 17.416666666666668) internal successors, (209), 12 states have internal predecessors, (209), 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) [2021-11-04 14:35:36,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:35:36,403 INFO L93 Difference]: Finished difference Result 1716 states and 2145 transitions. [2021-11-04 14:35:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-04 14:35:36,404 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.416666666666668) internal successors, (209), 12 states have internal predecessors, (209), 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 415 [2021-11-04 14:35:36,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:35:36,408 INFO L225 Difference]: With dead ends: 1716 [2021-11-04 14:35:36,408 INFO L226 Difference]: Without dead ends: 934 [2021-11-04 14:35:36,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 818 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.26ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 14:35:36,410 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1652.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.51ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1846.76ms IncrementalHoareTripleChecker+Time [2021-11-04 14:35:36,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1682 Unknown, 0 Unchecked, 3.51ms Time], IncrementalHoareTripleChecker [74 Valid, 1608 Invalid, 0 Unknown, 0 Unchecked, 1846.76ms Time] [2021-11-04 14:35:36,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-11-04 14:35:36,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 934. [2021-11-04 14:35:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 924 states have (on average 1.1948051948051948) internal successors, (1104), 933 states have internal predecessors, (1104), 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) [2021-11-04 14:35:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1104 transitions. [2021-11-04 14:35:36,432 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1104 transitions. Word has length 415 [2021-11-04 14:35:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:35:36,432 INFO L470 AbstractCegarLoop]: Abstraction has 934 states and 1104 transitions. [2021-11-04 14:35:36,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.416666666666668) internal successors, (209), 12 states have internal predecessors, (209), 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) [2021-11-04 14:35:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1104 transitions. [2021-11-04 14:35:36,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2021-11-04 14:35:36,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:35:36,436 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:35:36,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-04 14:35:36,651 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 [2021-11-04 14:35:36,651 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 14:35:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:35:36,652 INFO L85 PathProgramCache]: Analyzing trace with hash -378589582, now seen corresponding path program 3 times [2021-11-04 14:35:36,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:35:36,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248665170] [2021-11-04 14:35:36,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:36,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:35:36,670 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:35:36,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216697761] [2021-11-04 14:35:36,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 14:35:36,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:35:36,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:35:36,671 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) [2021-11-04 14:35:36,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-04 14:35:36,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 14:35:36,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:35:36,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 14:35:36,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:35:38,341 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2021-11-04 14:35:38,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:35:38,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:35:38,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248665170] [2021-11-04 14:35:38,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:35:38,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216697761] [2021-11-04 14:35:38,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216697761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:35:38,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:35:38,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:35:38,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685722937] [2021-11-04 14:35:38,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:35:38,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:35:38,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:35:38,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:35:38,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:35:38,343 INFO L87 Difference]: Start difference. First operand 934 states and 1104 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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) [2021-11-04 14:35:38,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:35:38,863 INFO L93 Difference]: Finished difference Result 1790 states and 2122 transitions. [2021-11-04 14:35:38,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:35:38,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 427 [2021-11-04 14:35:38,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:35:38,866 INFO L225 Difference]: With dead ends: 1790 [2021-11-04 14:35:38,867 INFO L226 Difference]: Without dead ends: 932 [2021-11-04 14:35:38,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:35:38,868 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 420.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.64ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 502.34ms IncrementalHoareTripleChecker+Time [2021-11-04 14:35:38,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 525 Unknown, 0 Unchecked, 0.64ms Time], IncrementalHoareTripleChecker [1 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 502.34ms Time] [2021-11-04 14:35:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-11-04 14:35:38,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2021-11-04 14:35:38,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 922 states have (on average 1.1941431670281997) internal successors, (1101), 931 states have internal predecessors, (1101), 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) [2021-11-04 14:35:38,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1101 transitions. [2021-11-04 14:35:38,890 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1101 transitions. Word has length 427 [2021-11-04 14:35:38,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:35:38,891 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 1101 transitions. [2021-11-04 14:35:38,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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) [2021-11-04 14:35:38,891 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1101 transitions. [2021-11-04 14:35:38,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2021-11-04 14:35:38,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:35:38,894 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:35:38,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-04 14:35:39,119 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 [2021-11-04 14:35:39,119 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 14:35:39,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:35:39,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1684890018, now seen corresponding path program 1 times [2021-11-04 14:35:39,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:35:39,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519744018] [2021-11-04 14:35:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:39,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:35:39,148 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:35:39,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350748354] [2021-11-04 14:35:39,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:39,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:35:39,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:35:39,150 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) [2021-11-04 14:35:39,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-04 14:35:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:35:39,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-04 14:35:39,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:35:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 109 proven. 55 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2021-11-04 14:35:40,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:35:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 109 proven. 55 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2021-11-04 14:35:41,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:35:41,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519744018] [2021-11-04 14:35:41,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:35:41,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350748354] [2021-11-04 14:35:41,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350748354] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:35:41,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:35:41,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-04 14:35:41,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664071] [2021-11-04 14:35:41,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:35:41,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-04 14:35:41,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:35:41,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-04 14:35:41,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 14:35:41,051 INFO L87 Difference]: Start difference. First operand 932 states and 1101 transitions. Second operand has 24 states, 24 states have (on average 7.75) internal successors, (186), 24 states have internal predecessors, (186), 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) [2021-11-04 14:35:42,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:35:42,686 INFO L93 Difference]: Finished difference Result 1996 states and 2520 transitions. [2021-11-04 14:35:42,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-04 14:35:42,687 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.75) internal successors, (186), 24 states have internal predecessors, (186), 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 454 [2021-11-04 14:35:42,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:35:42,690 INFO L225 Difference]: With dead ends: 1996 [2021-11-04 14:35:42,690 INFO L226 Difference]: Without dead ends: 1124 [2021-11-04 14:35:42,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 884 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 292.84ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 14:35:42,692 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1353.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.01ms SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1592.49ms IncrementalHoareTripleChecker+Time [2021-11-04 14:35:42,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1892 Unknown, 0 Unchecked, 3.01ms Time], IncrementalHoareTripleChecker [236 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 1592.49ms Time] [2021-11-04 14:35:42,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2021-11-04 14:35:42,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1124. [2021-11-04 14:35:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1114 states have (on average 1.1606822262118492) internal successors, (1293), 1123 states have internal predecessors, (1293), 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) [2021-11-04 14:35:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1293 transitions. [2021-11-04 14:35:42,733 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1293 transitions. Word has length 454 [2021-11-04 14:35:42,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:35:42,733 INFO L470 AbstractCegarLoop]: Abstraction has 1124 states and 1293 transitions. [2021-11-04 14:35:42,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.75) internal successors, (186), 24 states have internal predecessors, (186), 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) [2021-11-04 14:35:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1293 transitions. [2021-11-04 14:35:42,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2021-11-04 14:35:42,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:35:42,738 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:35:42,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-04 14:35:42,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-04 14:35:42,947 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 14:35:42,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:35:42,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1031309602, now seen corresponding path program 2 times [2021-11-04 14:35:42,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:35:42,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71339926] [2021-11-04 14:35:42,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:42,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:35:42,986 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:35:42,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308936273] [2021-11-04 14:35:42,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 14:35:42,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:35:42,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:35:42,991 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:35:42,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-04 14:35:43,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 14:35:43,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:35:43,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-04 14:35:43,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:35:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1592 backedges. 109 proven. 253 refuted. 0 times theorem prover too weak. 1230 trivial. 0 not checked. [2021-11-04 14:35:44,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:35:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1592 backedges. 109 proven. 253 refuted. 0 times theorem prover too weak. 1230 trivial. 0 not checked. [2021-11-04 14:35:45,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:35:45,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71339926] [2021-11-04 14:35:45,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:35:45,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308936273] [2021-11-04 14:35:45,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308936273] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:35:45,842 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:35:45,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-04 14:35:45,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925322334] [2021-11-04 14:35:45,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:35:45,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-04 14:35:45,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:35:45,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-04 14:35:45,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 14:35:45,845 INFO L87 Difference]: Start difference. First operand 1124 states and 1293 transitions. Second operand has 48 states, 48 states have (on average 4.375) internal successors, (210), 48 states have internal predecessors, (210), 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) [2021-11-04 14:35:47,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:35:47,346 INFO L93 Difference]: Finished difference Result 2528 states and 3212 transitions. [2021-11-04 14:35:47,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-04 14:35:47,347 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.375) internal successors, (210), 48 states have internal predecessors, (210), 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 502 [2021-11-04 14:35:47,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:35:47,349 INFO L225 Difference]: With dead ends: 2528 [2021-11-04 14:35:47,349 INFO L226 Difference]: Without dead ends: 1476 [2021-11-04 14:35:47,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1002 GetRequests, 956 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 964.48ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 14:35:47,351 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1152.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.76ms SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1396.96ms IncrementalHoareTripleChecker+Time [2021-11-04 14:35:47,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2019 Unknown, 0 Unchecked, 3.76ms Time], IncrementalHoareTripleChecker [535 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 1396.96ms Time] [2021-11-04 14:35:47,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-11-04 14:35:47,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1476. [2021-11-04 14:35:47,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1466 states have (on average 1.1221009549795362) internal successors, (1645), 1475 states have internal predecessors, (1645), 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) [2021-11-04 14:35:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1645 transitions. [2021-11-04 14:35:47,400 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1645 transitions. Word has length 502 [2021-11-04 14:35:47,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:35:47,401 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 1645 transitions. [2021-11-04 14:35:47,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.375) internal successors, (210), 48 states have internal predecessors, (210), 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) [2021-11-04 14:35:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1645 transitions. [2021-11-04 14:35:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2021-11-04 14:35:47,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:35:47,406 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:35:47,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-04 14:35:47,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-04 14:35:47,619 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 14:35:47,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:35:47,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1349968158, now seen corresponding path program 3 times [2021-11-04 14:35:47,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:35:47,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164411244] [2021-11-04 14:35:47,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:35:47,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:35:47,643 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:35:47,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791928255] [2021-11-04 14:35:47,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 14:35:47,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:35:47,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:35:47,645 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:35:47,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Killed by 15