./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.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_SAX_test9-1.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 e2cb3c9a8570b7ee66b623ed5fd2a1832f018e766f6bb5120cee7430951770d6 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 16:30:57,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 16:30:57,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 16:30:57,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 16:30:57,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 16:30:57,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 16:30:57,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 16:30:57,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 16:30:57,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 16:30:57,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 16:30:57,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 16:30:57,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 16:30:57,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 16:30:57,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 16:30:57,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 16:30:57,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 16:30:57,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 16:30:57,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 16:30:57,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 16:30:57,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 16:30:57,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 16:30:57,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 16:30:57,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 16:30:57,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 16:30:57,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 16:30:57,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 16:30:57,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 16:30:57,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 16:30:57,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 16:30:57,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 16:30:57,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 16:30:57,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 16:30:57,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 16:30:57,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 16:30:57,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 16:30:57,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 16:30:57,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 16:30:57,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 16:30:57,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 16:30:57,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 16:30:57,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 16:30:57,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-04 16:30:57,665 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 16:30:57,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 16:30:57,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 16:30:57,666 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 16:30:57,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 16:30:57,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 16:30:57,667 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 16:30:57,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 16:30:57,667 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-04 16:30:57,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 16:30:57,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-04 16:30:57,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 16:30:57,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 16:30:57,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 16:30:57,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 16:30:57,669 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-04 16:30:57,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 16:30:57,669 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 16:30:57,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 16:30:57,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 16:30:57,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 16:30:57,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 16:30:57,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 16:30:57,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 16:30:57,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 16:30:57,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 16:30:57,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 16:30:57,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 16:30:57,671 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 16:30:57,671 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 16:30:57,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 16:30:57,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 16:30:57,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2cb3c9a8570b7ee66b623ed5fd2a1832f018e766f6bb5120cee7430951770d6 [2021-11-04 16:30:57,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 16:30:57,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 16:30:57,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 16:30:57,892 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 16:30:57,893 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 16:30:57,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i [2021-11-04 16:30:57,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f25efa898/c396a849a5ff47bf915931838a1b0185/FLAGa25ed6a37 [2021-11-04 16:30:58,377 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 16:30:58,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i [2021-11-04 16:30:58,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f25efa898/c396a849a5ff47bf915931838a1b0185/FLAGa25ed6a37 [2021-11-04 16:30:58,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f25efa898/c396a849a5ff47bf915931838a1b0185 [2021-11-04 16:30:58,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 16:30:58,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 16:30:58,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 16:30:58,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 16:30:58,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 16:30:58,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:30:58" (1/1) ... [2021-11-04 16:30:58,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421f1241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:30:58, skipping insertion in model container [2021-11-04 16:30:58,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:30:58" (1/1) ... [2021-11-04 16:30:58,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 16:30:58,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 16:30:59,090 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_SAX_test9-1.i[33021,33034] [2021-11-04 16:30:59,276 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_SAX_test9-1.i[84583,84596] [2021-11-04 16:30:59,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 16:30:59,287 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 16:30:59,324 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_SAX_test9-1.i[33021,33034] [2021-11-04 16:30:59,422 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_SAX_test9-1.i[84583,84596] [2021-11-04 16:30:59,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 16:30:59,446 INFO L208 MainTranslator]: Completed translation [2021-11-04 16:30:59,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:30:59 WrapperNode [2021-11-04 16:30:59,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 16:30:59,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 16:30:59,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 16:30:59,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 16:30:59,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:30:59" (1/1) ... [2021-11-04 16:30:59,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:30:59" (1/1) ... [2021-11-04 16:30:59,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 16:30:59,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 16:30:59,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 16:30:59,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 16:30:59,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:30:59" (1/1) ... [2021-11-04 16:30:59,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:30:59" (1/1) ... [2021-11-04 16:30:59,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:30:59" (1/1) ... [2021-11-04 16:30:59,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:30:59" (1/1) ... [2021-11-04 16:30:59,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:30:59" (1/1) ... [2021-11-04 16:30:59,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:30:59" (1/1) ... [2021-11-04 16:30:59,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:30:59" (1/1) ... [2021-11-04 16:30:59,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 16:30:59,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 16:30:59,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 16:30:59,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 16:30:59,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:30:59" (1/1) ... [2021-11-04 16:30:59,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 16:30:59,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:30:59,831 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 16:30:59,836 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 16:30:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 16:30:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 16:30:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 16:30:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 16:30:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 16:30:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-04 16:30:59,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 16:30:59,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 16:30:59,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 16:30:59,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 16:30:59,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 16:31:00,665 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 16:31:00,666 INFO L299 CfgBuilder]: Removed 1066 assume(true) statements. [2021-11-04 16:31:00,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:31:00 BoogieIcfgContainer [2021-11-04 16:31:00,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 16:31:00,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 16:31:00,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 16:31:00,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 16:31:00,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 04:30:58" (1/3) ... [2021-11-04 16:31:00,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6686bc46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:31:00, skipping insertion in model container [2021-11-04 16:31:00,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:30:59" (2/3) ... [2021-11-04 16:31:00,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6686bc46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:31:00, skipping insertion in model container [2021-11-04 16:31:00,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:31:00" (3/3) ... [2021-11-04 16:31:00,676 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test9-1.i [2021-11-04 16:31:00,679 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 16:31:00,679 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 501 error locations. [2021-11-04 16:31:00,715 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 16:31:00,719 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 16:31:00,719 INFO L340 AbstractCegarLoop]: Starting to check reachability of 501 error locations. [2021-11-04 16:31:00,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 2157 states, 1655 states have (on average 1.9716012084592145) internal successors, (3263), 2156 states have internal predecessors, (3263), 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 16:31:00,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-04 16:31:00,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:31:00,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:31:00,757 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:31:00,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:31:00,760 INFO L85 PathProgramCache]: Analyzing trace with hash 239437319, now seen corresponding path program 1 times [2021-11-04 16:31:00,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:31:00,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005641883] [2021-11-04 16:31:00,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:00,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:31:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:31:00,886 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 16:31:00,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:31:00,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005641883] [2021-11-04 16:31:00,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005641883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:31:00,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:31:00,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 16:31:00,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554402003] [2021-11-04 16:31:00,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:31:00,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 16:31:00,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:31:00,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 16:31:00,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 16:31:00,916 INFO L87 Difference]: Start difference. First operand has 2157 states, 1655 states have (on average 1.9716012084592145) internal successors, (3263), 2156 states have internal predecessors, (3263), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:31:02,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:31:02,825 INFO L93 Difference]: Finished difference Result 4312 states and 6524 transitions. [2021-11-04 16:31:02,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 16:31:02,827 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-04 16:31:02,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:31:02,842 INFO L225 Difference]: With dead ends: 4312 [2021-11-04 16:31:02,842 INFO L226 Difference]: Without dead ends: 2153 [2021-11-04 16:31:02,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 16:31:02,850 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1395.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1811.89ms IncrementalHoareTripleChecker+Time [2021-11-04 16:31:02,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2704 Unknown, 0 Unchecked, 6.04ms Time], IncrementalHoareTripleChecker [0 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 1811.89ms Time] [2021-11-04 16:31:02,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2021-11-04 16:31:02,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2021-11-04 16:31:02,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 1652 states have (on average 1.6343825665859564) internal successors, (2700), 2152 states have internal predecessors, (2700), 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 16:31:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2700 transitions. [2021-11-04 16:31:02,937 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2700 transitions. Word has length 9 [2021-11-04 16:31:02,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:31:02,938 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 2700 transitions. [2021-11-04 16:31:02,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:31:02,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2700 transitions. [2021-11-04 16:31:02,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-04 16:31:02,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:31:02,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:31:02,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 16:31:02,940 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:31:02,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:31:02,941 INFO L85 PathProgramCache]: Analyzing trace with hash 627540097, now seen corresponding path program 1 times [2021-11-04 16:31:02,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:31:02,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086215531] [2021-11-04 16:31:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:02,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:31:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:31:02,985 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 16:31:02,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:31:02,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086215531] [2021-11-04 16:31:02,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086215531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:31:02,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:31:02,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:31:02,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869331856] [2021-11-04 16:31:02,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:31:02,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:31:02,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:31:02,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:31:02,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:31:02,989 INFO L87 Difference]: Start difference. First operand 2153 states and 2700 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:31:07,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:31:07,294 INFO L93 Difference]: Finished difference Result 6317 states and 7915 transitions. [2021-11-04 16:31:07,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:31:07,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-04 16:31:07,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:31:07,306 INFO L225 Difference]: With dead ends: 6317 [2021-11-04 16:31:07,306 INFO L226 Difference]: Without dead ends: 4254 [2021-11-04 16:31:07,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:31:07,309 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2628 mSDsluCounter, 5295 mSDsCounter, 0 mSdLazyCounter, 8098 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3288.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2628 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.39ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4138.06ms IncrementalHoareTripleChecker+Time [2021-11-04 16:31:07,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2628 Valid, 0 Invalid, 8101 Unknown, 0 Unchecked, 24.39ms Time], IncrementalHoareTripleChecker [3 Valid, 8098 Invalid, 0 Unknown, 0 Unchecked, 4138.06ms Time] [2021-11-04 16:31:07,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4254 states. [2021-11-04 16:31:07,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4254 to 2155. [2021-11-04 16:31:07,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 1654 states have (on average 1.6336154776299878) internal successors, (2702), 2154 states have internal predecessors, (2702), 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 16:31:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2702 transitions. [2021-11-04 16:31:07,345 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2702 transitions. Word has length 44 [2021-11-04 16:31:07,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:31:07,345 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 2702 transitions. [2021-11-04 16:31:07,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:31:07,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2702 transitions. [2021-11-04 16:31:07,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 16:31:07,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:31:07,363 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:31:07,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 16:31:07,364 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:31:07,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:31:07,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1103299153, now seen corresponding path program 1 times [2021-11-04 16:31:07,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:31:07,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017642689] [2021-11-04 16:31:07,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:07,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:31:07,387 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:31:07,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063167262] [2021-11-04 16:31:07,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:07,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:31:07,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:31:07,390 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 16:31:07,423 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 16:31:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:31:07,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:31:07,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:31:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:31:07,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:31:07,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:31:07,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017642689] [2021-11-04 16:31:07,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:31:07,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063167262] [2021-11-04 16:31:07,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063167262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:31:07,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:31:07,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:31:07,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218119587] [2021-11-04 16:31:07,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:31:07,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:31:07,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:31:07,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:31:07,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:31:07,728 INFO L87 Difference]: Start difference. First operand 2155 states and 2702 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:31:09,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:31:09,875 INFO L93 Difference]: Finished difference Result 4327 states and 5431 transitions. [2021-11-04 16:31:09,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:31:09,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-04 16:31:09,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:31:09,882 INFO L225 Difference]: With dead ends: 4327 [2021-11-04 16:31:09,882 INFO L226 Difference]: Without dead ends: 2176 [2021-11-04 16:31:09,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.18ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:31:09,887 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 5389 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1629.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.69ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2089.25ms IncrementalHoareTripleChecker+Time [2021-11-04 16:31:09,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 5417 Unknown, 0 Unchecked, 8.69ms Time], IncrementalHoareTripleChecker [28 Valid, 5389 Invalid, 0 Unknown, 0 Unchecked, 2089.25ms Time] [2021-11-04 16:31:09,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2021-11-04 16:31:09,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2175. [2021-11-04 16:31:09,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2175 states, 1674 states have (on average 1.6260454002389486) internal successors, (2722), 2174 states have internal predecessors, (2722), 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 16:31:09,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 2722 transitions. [2021-11-04 16:31:09,918 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 2722 transitions. Word has length 96 [2021-11-04 16:31:09,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:31:09,919 INFO L470 AbstractCegarLoop]: Abstraction has 2175 states and 2722 transitions. [2021-11-04 16:31:09,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:31:09,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 2722 transitions. [2021-11-04 16:31:09,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 16:31:09,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:31:09,923 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:31:09,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 16:31:10,127 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 16:31:10,128 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:31:10,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:31:10,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1343538899, now seen corresponding path program 1 times [2021-11-04 16:31:10,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:31:10,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302776595] [2021-11-04 16:31:10,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:10,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:31:10,152 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:31:10,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260692503] [2021-11-04 16:31:10,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:10,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:31:10,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:31:10,157 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 16:31:10,159 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 16:31:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:31:10,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:31:10,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:31:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 16:31:10,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:31:10,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:31:10,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302776595] [2021-11-04 16:31:10,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:31:10,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260692503] [2021-11-04 16:31:10,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260692503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:31:10,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:31:10,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:31:10,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935890421] [2021-11-04 16:31:10,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:31:10,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:31:10,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:31:10,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:31:10,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:31:10,374 INFO L87 Difference]: Start difference. First operand 2175 states and 2722 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:31:12,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:31:12,519 INFO L93 Difference]: Finished difference Result 4258 states and 5334 transitions. [2021-11-04 16:31:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:31:12,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-04 16:31:12,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:31:12,526 INFO L225 Difference]: With dead ends: 4258 [2021-11-04 16:31:12,526 INFO L226 Difference]: Without dead ends: 2196 [2021-11-04 16:31:12,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:31:12,530 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 5389 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1622.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.12ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2080.36ms IncrementalHoareTripleChecker+Time [2021-11-04 16:31:12,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 5417 Unknown, 0 Unchecked, 8.12ms Time], IncrementalHoareTripleChecker [28 Valid, 5389 Invalid, 0 Unknown, 0 Unchecked, 2080.36ms Time] [2021-11-04 16:31:12,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-11-04 16:31:12,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 2195. [2021-11-04 16:31:12,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 1694 states have (on average 1.6186540731995278) internal successors, (2742), 2194 states have internal predecessors, (2742), 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 16:31:12,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 2742 transitions. [2021-11-04 16:31:12,558 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 2742 transitions. Word has length 96 [2021-11-04 16:31:12,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:31:12,559 INFO L470 AbstractCegarLoop]: Abstraction has 2195 states and 2742 transitions. [2021-11-04 16:31:12,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:31:12,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 2742 transitions. [2021-11-04 16:31:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 16:31:12,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:31:12,563 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:31:12,581 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 16:31:12,776 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 16:31:12,777 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:31:12,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:31:12,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1663743951, now seen corresponding path program 1 times [2021-11-04 16:31:12,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:31:12,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628558389] [2021-11-04 16:31:12,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:12,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:31:12,788 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:31:12,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241553871] [2021-11-04 16:31:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:12,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:31:12,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:31:12,798 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 16:31:12,799 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 16:31:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:31:12,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:31:12,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:31:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:31:13,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:31:13,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:31:13,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628558389] [2021-11-04 16:31:13,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:31:13,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241553871] [2021-11-04 16:31:13,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241553871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:31:13,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:31:13,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:31:13,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786682452] [2021-11-04 16:31:13,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:31:13,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:31:13,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:31:13,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:31:13,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:31:13,064 INFO L87 Difference]: Start difference. First operand 2195 states and 2742 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:31:15,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:31:15,525 INFO L93 Difference]: Finished difference Result 4378 states and 5472 transitions. [2021-11-04 16:31:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:31:15,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-04 16:31:15,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:31:15,532 INFO L225 Difference]: With dead ends: 4378 [2021-11-04 16:31:15,532 INFO L226 Difference]: Without dead ends: 2187 [2021-11-04 16:31:15,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.96ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:31:15,535 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2688 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 5398 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1880.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2688 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.24ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2395.63ms IncrementalHoareTripleChecker+Time [2021-11-04 16:31:15,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2688 Valid, 0 Invalid, 5422 Unknown, 0 Unchecked, 9.24ms Time], IncrementalHoareTripleChecker [24 Valid, 5398 Invalid, 0 Unknown, 0 Unchecked, 2395.63ms Time] [2021-11-04 16:31:15,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2021-11-04 16:31:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2181. [2021-11-04 16:31:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 1680 states have (on average 1.6196428571428572) internal successors, (2721), 2180 states have internal predecessors, (2721), 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 16:31:15,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 2721 transitions. [2021-11-04 16:31:15,562 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 2721 transitions. Word has length 96 [2021-11-04 16:31:15,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:31:15,562 INFO L470 AbstractCegarLoop]: Abstraction has 2181 states and 2721 transitions. [2021-11-04 16:31:15,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:31:15,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 2721 transitions. [2021-11-04 16:31:15,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 16:31:15,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:31:15,565 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:31:15,583 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 16:31:15,779 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 16:31:15,779 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:31:15,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:31:15,780 INFO L85 PathProgramCache]: Analyzing trace with hash 570124223, now seen corresponding path program 1 times [2021-11-04 16:31:15,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:31:15,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332340531] [2021-11-04 16:31:15,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:15,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:31:15,797 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:31:15,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536503146] [2021-11-04 16:31:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:15,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:31:15,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:31:15,799 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 16:31:15,800 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 16:31:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:31:15,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:31:15,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:31:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 16:31:16,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:31:16,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:31:16,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332340531] [2021-11-04 16:31:16,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:31:16,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536503146] [2021-11-04 16:31:16,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536503146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:31:16,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:31:16,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:31:16,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042235919] [2021-11-04 16:31:16,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:31:16,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:31:16,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:31:16,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:31:16,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:31:16,054 INFO L87 Difference]: Start difference. First operand 2181 states and 2721 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:31:18,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:31:18,246 INFO L93 Difference]: Finished difference Result 4255 states and 5314 transitions. [2021-11-04 16:31:18,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:31:18,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-04 16:31:18,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:31:18,251 INFO L225 Difference]: With dead ends: 4255 [2021-11-04 16:31:18,251 INFO L226 Difference]: Without dead ends: 2173 [2021-11-04 16:31:18,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.29ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:31:18,254 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2571 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 5488 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1692.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2571 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.12ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2131.23ms IncrementalHoareTripleChecker+Time [2021-11-04 16:31:18,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2571 Valid, 0 Invalid, 5512 Unknown, 0 Unchecked, 7.12ms Time], IncrementalHoareTripleChecker [24 Valid, 5488 Invalid, 0 Unknown, 0 Unchecked, 2131.23ms Time] [2021-11-04 16:31:18,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2173 states. [2021-11-04 16:31:18,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2173 to 2167. [2021-11-04 16:31:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 1666 states have (on average 1.6206482593037215) internal successors, (2700), 2166 states have internal predecessors, (2700), 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 16:31:18,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 2700 transitions. [2021-11-04 16:31:18,276 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 2700 transitions. Word has length 96 [2021-11-04 16:31:18,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:31:18,276 INFO L470 AbstractCegarLoop]: Abstraction has 2167 states and 2700 transitions. [2021-11-04 16:31:18,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:31:18,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 2700 transitions. [2021-11-04 16:31:18,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 16:31:18,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:31:18,279 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:31:18,299 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 16:31:18,487 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 16:31:18,487 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:31:18,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:31:18,488 INFO L85 PathProgramCache]: Analyzing trace with hash -312724623, now seen corresponding path program 1 times [2021-11-04 16:31:18,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:31:18,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831353939] [2021-11-04 16:31:18,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:18,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:31:18,501 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:31:18,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73734160] [2021-11-04 16:31:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:18,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:31:18,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:31:18,509 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 16:31:18,510 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 16:31:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:31:18,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 16:31:18,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:31:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:31:18,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:31:18,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:31:18,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831353939] [2021-11-04 16:31:18,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:31:18,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73734160] [2021-11-04 16:31:18,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73734160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:31:18,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:31:18,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:31:18,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754844493] [2021-11-04 16:31:18,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:31:18,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:31:18,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:31:18,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:31:18,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:31:18,830 INFO L87 Difference]: Start difference. First operand 2167 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:31:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:31:21,895 INFO L93 Difference]: Finished difference Result 6426 states and 8004 transitions. [2021-11-04 16:31:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:31:21,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-04 16:31:21,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:31:21,906 INFO L225 Difference]: With dead ends: 6426 [2021-11-04 16:31:21,906 INFO L226 Difference]: Without dead ends: 4263 [2021-11-04 16:31:21,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:31:21,909 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2569 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 5402 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2352.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2569 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.98ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2974.15ms IncrementalHoareTripleChecker+Time [2021-11-04 16:31:21,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2569 Valid, 0 Invalid, 5405 Unknown, 0 Unchecked, 6.98ms Time], IncrementalHoareTripleChecker [3 Valid, 5402 Invalid, 0 Unknown, 0 Unchecked, 2974.15ms Time] [2021-11-04 16:31:21,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4263 states. [2021-11-04 16:31:21,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4263 to 3261. [2021-11-04 16:31:21,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3261 states, 2760 states have (on average 1.7409420289855073) internal successors, (4805), 3260 states have internal predecessors, (4805), 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 16:31:21,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3261 states to 3261 states and 4805 transitions. [2021-11-04 16:31:21,951 INFO L78 Accepts]: Start accepts. Automaton has 3261 states and 4805 transitions. Word has length 96 [2021-11-04 16:31:21,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:31:21,951 INFO L470 AbstractCegarLoop]: Abstraction has 3261 states and 4805 transitions. [2021-11-04 16:31:21,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:31:21,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3261 states and 4805 transitions. [2021-11-04 16:31:21,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-04 16:31:21,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:31:21,952 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:31:21,971 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 16:31:22,167 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 16:31:22,168 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:31:22,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:31:22,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1091132224, now seen corresponding path program 1 times [2021-11-04 16:31:22,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:31:22,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728167776] [2021-11-04 16:31:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:22,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:31:22,178 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:31:22,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221978496] [2021-11-04 16:31:22,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:22,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:31:22,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:31:22,180 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 16:31:22,181 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 16:31:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:31:22,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:31:22,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:31:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:31:22,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:31:22,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:31:22,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728167776] [2021-11-04 16:31:22,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:31:22,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221978496] [2021-11-04 16:31:22,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221978496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:31:22,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:31:22,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:31:22,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220989734] [2021-11-04 16:31:22,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:31:22,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:31:22,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:31:22,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:31:22,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:31:22,422 INFO L87 Difference]: Start difference. First operand 3261 states and 4805 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 16:31:24,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:31:24,663 INFO L93 Difference]: Finished difference Result 6476 states and 9561 transitions. [2021-11-04 16:31:24,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:31:24,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2021-11-04 16:31:24,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:31:24,671 INFO L225 Difference]: With dead ends: 6476 [2021-11-04 16:31:24,672 INFO L226 Difference]: Without dead ends: 3263 [2021-11-04 16:31:24,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:31:24,675 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 5370 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1736.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.64ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2179.64ms IncrementalHoareTripleChecker+Time [2021-11-04 16:31:24,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5372 Unknown, 0 Unchecked, 5.64ms Time], IncrementalHoareTripleChecker [2 Valid, 5370 Invalid, 0 Unknown, 0 Unchecked, 2179.64ms Time] [2021-11-04 16:31:24,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2021-11-04 16:31:24,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 3263. [2021-11-04 16:31:24,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3263 states, 2762 states have (on average 1.7404055032585084) internal successors, (4807), 3262 states have internal predecessors, (4807), 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 16:31:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4807 transitions. [2021-11-04 16:31:24,708 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4807 transitions. Word has length 103 [2021-11-04 16:31:24,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:31:24,709 INFO L470 AbstractCegarLoop]: Abstraction has 3263 states and 4807 transitions. [2021-11-04 16:31:24,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 16:31:24,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4807 transitions. [2021-11-04 16:31:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-04 16:31:24,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:31:24,710 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:31:24,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-04 16:31:24,920 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 16:31:24,921 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:31:24,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:31:24,921 INFO L85 PathProgramCache]: Analyzing trace with hash 77652065, now seen corresponding path program 1 times [2021-11-04 16:31:24,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:31:24,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217240532] [2021-11-04 16:31:24,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:24,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:31:24,931 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:31:24,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743877131] [2021-11-04 16:31:24,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:24,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:31:24,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:31:24,934 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 16:31:24,935 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 16:31:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:31:25,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 16:31:25,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:31:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 16:31:25,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:31:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 16:31:25,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:31:25,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217240532] [2021-11-04 16:31:25,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:31:25,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743877131] [2021-11-04 16:31:25,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743877131] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:31:25,304 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:31:25,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-04 16:31:25,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627352747] [2021-11-04 16:31:25,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:31:25,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 16:31:25,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:31:25,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 16:31:25,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 16:31:25,305 INFO L87 Difference]: Start difference. First operand 3263 states and 4807 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 16:31:28,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:31:28,460 INFO L93 Difference]: Finished difference Result 6484 states and 9573 transitions. [2021-11-04 16:31:28,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 16:31:28,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 105 [2021-11-04 16:31:28,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:31:28,470 INFO L225 Difference]: With dead ends: 6484 [2021-11-04 16:31:28,470 INFO L226 Difference]: Without dead ends: 3269 [2021-11-04 16:31:28,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.33ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 16:31:28,473 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 5354 mSDsCounter, 0 mSdLazyCounter, 8058 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2459.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.10ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 8058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3079.60ms IncrementalHoareTripleChecker+Time [2021-11-04 16:31:28,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 8071 Unknown, 0 Unchecked, 9.10ms Time], IncrementalHoareTripleChecker [13 Valid, 8058 Invalid, 0 Unknown, 0 Unchecked, 3079.60ms Time] [2021-11-04 16:31:28,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2021-11-04 16:31:28,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3269. [2021-11-04 16:31:28,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 2768 states have (on average 1.738800578034682) internal successors, (4813), 3268 states have internal predecessors, (4813), 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 16:31:28,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 4813 transitions. [2021-11-04 16:31:28,534 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 4813 transitions. Word has length 105 [2021-11-04 16:31:28,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:31:28,534 INFO L470 AbstractCegarLoop]: Abstraction has 3269 states and 4813 transitions. [2021-11-04 16:31:28,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 16:31:28,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 4813 transitions. [2021-11-04 16:31:28,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-04 16:31:28,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:31:28,536 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:31:28,554 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 16:31:28,751 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 16:31:28,752 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:31:28,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:31:28,752 INFO L85 PathProgramCache]: Analyzing trace with hash -383784704, now seen corresponding path program 2 times [2021-11-04 16:31:28,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:31:28,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846405294] [2021-11-04 16:31:28,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:28,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:31:28,761 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:31:28,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238393365] [2021-11-04 16:31:28,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 16:31:28,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:31:28,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:31:28,763 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 16:31:28,765 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 16:31:28,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 16:31:28,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:31:28,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-04 16:31:28,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:31:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 16:31:29,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:31:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 16:31:29,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:31:29,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846405294] [2021-11-04 16:31:29,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:31:29,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238393365] [2021-11-04 16:31:29,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238393365] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:31:29,229 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:31:29,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-04 16:31:29,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530113190] [2021-11-04 16:31:29,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:31:29,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-04 16:31:29,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:31:29,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-04 16:31:29,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 16:31:29,231 INFO L87 Difference]: Start difference. First operand 3269 states and 4813 transitions. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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 16:31:32,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:31:32,728 INFO L93 Difference]: Finished difference Result 6502 states and 9597 transitions. [2021-11-04 16:31:32,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-04 16:31:32,728 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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 111 [2021-11-04 16:31:32,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:31:32,735 INFO L225 Difference]: With dead ends: 6502 [2021-11-04 16:31:32,735 INFO L226 Difference]: Without dead ends: 3281 [2021-11-04 16:31:32,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.68ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 16:31:32,737 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 5354 mSDsCounter, 0 mSdLazyCounter, 8070 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2649.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.35ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 8070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3406.39ms IncrementalHoareTripleChecker+Time [2021-11-04 16:31:32,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 8107 Unknown, 0 Unchecked, 9.35ms Time], IncrementalHoareTripleChecker [37 Valid, 8070 Invalid, 0 Unknown, 0 Unchecked, 3406.39ms Time] [2021-11-04 16:31:32,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2021-11-04 16:31:32,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3281. [2021-11-04 16:31:32,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 2780 states have (on average 1.735611510791367) internal successors, (4825), 3280 states have internal predecessors, (4825), 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 16:31:32,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 4825 transitions. [2021-11-04 16:31:32,768 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 4825 transitions. Word has length 111 [2021-11-04 16:31:32,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:31:32,768 INFO L470 AbstractCegarLoop]: Abstraction has 3281 states and 4825 transitions. [2021-11-04 16:31:32,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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 16:31:32,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 4825 transitions. [2021-11-04 16:31:32,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-04 16:31:32,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:31:32,770 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:31:32,791 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 16:31:32,983 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 16:31:32,983 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:31:32,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:31:32,984 INFO L85 PathProgramCache]: Analyzing trace with hash 562885024, now seen corresponding path program 3 times [2021-11-04 16:31:32,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:31:32,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567621730] [2021-11-04 16:31:32,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:32,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:31:32,994 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:31:32,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2116906207] [2021-11-04 16:31:32,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 16:31:32,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:31:32,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:31:32,999 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 16:31:32,999 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 16:31:33,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 16:31:33,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:31:33,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 16:31:33,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:31:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-04 16:31:33,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:31:33,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:31:33,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567621730] [2021-11-04 16:31:33,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:31:33,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116906207] [2021-11-04 16:31:33,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116906207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:31:33,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:31:33,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:31:33,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220417288] [2021-11-04 16:31:33,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:31:33,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:31:33,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:31:33,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:31:33,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:31:33,315 INFO L87 Difference]: Start difference. First operand 3281 states and 4825 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:31:35,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:31:35,189 INFO L93 Difference]: Finished difference Result 5464 states and 7541 transitions. [2021-11-04 16:31:35,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:31:35,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-04 16:31:35,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:31:35,194 INFO L225 Difference]: With dead ends: 5464 [2021-11-04 16:31:35,195 INFO L226 Difference]: Without dead ends: 2231 [2021-11-04 16:31:35,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.02ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:31:35,197 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5258 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1387.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5258 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.04ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1781.37ms IncrementalHoareTripleChecker+Time [2021-11-04 16:31:35,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5258 Valid, 0 Invalid, 2790 Unknown, 0 Unchecked, 11.04ms Time], IncrementalHoareTripleChecker [1 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 1781.37ms Time] [2021-11-04 16:31:35,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2021-11-04 16:31:35,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2231. [2021-11-04 16:31:35,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 1730 states have (on average 1.5994219653179191) internal successors, (2767), 2230 states have internal predecessors, (2767), 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 16:31:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 2767 transitions. [2021-11-04 16:31:35,216 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 2767 transitions. Word has length 123 [2021-11-04 16:31:35,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:31:35,216 INFO L470 AbstractCegarLoop]: Abstraction has 2231 states and 2767 transitions. [2021-11-04 16:31:35,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:31:35,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 2767 transitions. [2021-11-04 16:31:35,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-04 16:31:35,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:31:35,218 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:31:35,238 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 16:31:35,431 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 16:31:35,431 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:31:35,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:31:35,432 INFO L85 PathProgramCache]: Analyzing trace with hash 455290938, now seen corresponding path program 1 times [2021-11-04 16:31:35,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:31:35,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122199112] [2021-11-04 16:31:35,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:35,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:31:35,441 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:31:35,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2119340480] [2021-11-04 16:31:35,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:35,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:31:35,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:31:35,443 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 16:31:35,460 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 16:31:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:31:35,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-04 16:31:35,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:31:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-04 16:31:35,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:31:36,280 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-04 16:31:36,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:31:36,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122199112] [2021-11-04 16:31:36,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:31:36,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119340480] [2021-11-04 16:31:36,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119340480] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:31:36,280 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:31:36,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-04 16:31:36,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162033639] [2021-11-04 16:31:36,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:31:36,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-04 16:31:36,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:31:36,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-04 16:31:36,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 16:31:36,282 INFO L87 Difference]: Start difference. First operand 2231 states and 2767 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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 16:31:42,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:31:42,596 INFO L93 Difference]: Finished difference Result 4425 states and 5515 transitions. [2021-11-04 16:31:42,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-04 16:31:42,597 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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 130 [2021-11-04 16:31:42,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:31:42,602 INFO L225 Difference]: With dead ends: 4425 [2021-11-04 16:31:42,602 INFO L226 Difference]: Without dead ends: 2255 [2021-11-04 16:31:42,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 266.73ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 16:31:42,605 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 10704 mSDsCounter, 0 mSdLazyCounter, 13453 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4764.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.46ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 13453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6181.92ms IncrementalHoareTripleChecker+Time [2021-11-04 16:31:42,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 13539 Unknown, 0 Unchecked, 17.46ms Time], IncrementalHoareTripleChecker [86 Valid, 13453 Invalid, 0 Unknown, 0 Unchecked, 6181.92ms Time] [2021-11-04 16:31:42,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2021-11-04 16:31:42,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2255. [2021-11-04 16:31:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 1754 states have (on average 1.5912200684150513) internal successors, (2791), 2254 states have internal predecessors, (2791), 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 16:31:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2791 transitions. [2021-11-04 16:31:42,640 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2791 transitions. Word has length 130 [2021-11-04 16:31:42,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:31:42,640 INFO L470 AbstractCegarLoop]: Abstraction has 2255 states and 2791 transitions. [2021-11-04 16:31:42,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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 16:31:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2791 transitions. [2021-11-04 16:31:42,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-04 16:31:42,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:31:42,642 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:31:42,663 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 16:31:42,850 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 16:31:42,850 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:31:42,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:31:42,850 INFO L85 PathProgramCache]: Analyzing trace with hash -535515398, now seen corresponding path program 2 times [2021-11-04 16:31:42,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:31:42,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481269874] [2021-11-04 16:31:42,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:42,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:31:42,861 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:31:42,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698777945] [2021-11-04 16:31:42,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 16:31:42,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:31:42,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:31:42,862 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 16:31:42,863 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 16:31:42,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 16:31:42,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:31:43,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-04 16:31:43,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:31:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-04 16:31:43,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:31:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-04 16:31:44,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:31:44,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481269874] [2021-11-04 16:31:44,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:31:44,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698777945] [2021-11-04 16:31:44,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698777945] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:31:44,908 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:31:44,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-04 16:31:44,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102602529] [2021-11-04 16:31:44,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:31:44,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-04 16:31:44,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:31:44,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-04 16:31:44,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 16:31:44,911 INFO L87 Difference]: Start difference. First operand 2255 states and 2791 transitions. Second operand has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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 16:31:58,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:31:58,627 INFO L93 Difference]: Finished difference Result 4481 states and 5591 transitions. [2021-11-04 16:31:58,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-04 16:31:58,628 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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 154 [2021-11-04 16:31:58,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:31:58,631 INFO L225 Difference]: With dead ends: 4481 [2021-11-04 16:31:58,631 INFO L226 Difference]: Without dead ends: 2299 [2021-11-04 16:31:58,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1352.31ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 16:31:58,635 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 16056 mSDsCounter, 0 mSdLazyCounter, 18861 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10106.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.33ms SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 18861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13467.60ms IncrementalHoareTripleChecker+Time [2021-11-04 16:31:58,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 19059 Unknown, 0 Unchecked, 27.33ms Time], IncrementalHoareTripleChecker [198 Valid, 18861 Invalid, 0 Unknown, 0 Unchecked, 13467.60ms Time] [2021-11-04 16:31:58,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2021-11-04 16:31:58,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2299. [2021-11-04 16:31:58,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 1798 states have (on average 1.5767519466073414) internal successors, (2835), 2298 states have internal predecessors, (2835), 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 16:31:58,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 2835 transitions. [2021-11-04 16:31:58,661 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 2835 transitions. Word has length 154 [2021-11-04 16:31:58,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:31:58,661 INFO L470 AbstractCegarLoop]: Abstraction has 2299 states and 2835 transitions. [2021-11-04 16:31:58,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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 16:31:58,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 2835 transitions. [2021-11-04 16:31:58,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-04 16:31:58,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:31:58,663 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:31:58,683 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 16:31:58,875 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 16:31:58,875 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:31:58,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:31:58,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1925272410, now seen corresponding path program 3 times [2021-11-04 16:31:58,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:31:58,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064616226] [2021-11-04 16:31:58,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:31:58,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:31:58,890 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:31:58,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896966846] [2021-11-04 16:31:58,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 16:31:58,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:31:58,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:31:58,892 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 16:31:58,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Killed by 15