./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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_test10-1.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 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 06:20:26,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 06:20:26,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 06:20:26,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 06:20:26,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 06:20:26,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 06:20:26,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 06:20:26,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 06:20:26,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 06:20:26,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 06:20:26,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 06:20:26,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 06:20:26,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 06:20:26,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 06:20:26,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 06:20:26,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 06:20:26,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 06:20:26,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 06:20:26,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 06:20:26,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 06:20:26,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 06:20:26,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 06:20:26,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 06:20:26,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 06:20:26,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 06:20:26,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 06:20:26,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 06:20:26,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 06:20:26,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 06:20:26,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 06:20:26,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 06:20:26,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 06:20:26,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 06:20:26,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 06:20:26,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 06:20:26,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 06:20:26,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 06:20:26,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 06:20:26,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 06:20:26,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 06:20:26,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 06:20:26,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-03 06:20:26,795 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 06:20:26,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 06:20:26,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 06:20:26,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 06:20:26,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 06:20:26,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 06:20:26,797 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 06:20:26,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 06:20:26,797 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 06:20:26,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 06:20:26,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 06:20:26,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 06:20:26,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 06:20:26,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 06:20:26,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 06:20:26,799 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 06:20:26,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 06:20:26,799 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 06:20:26,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 06:20:26,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 06:20:26,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 06:20:26,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 06:20:26,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 06:20:26,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 06:20:26,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 06:20:26,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 06:20:26,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 06:20:26,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 06:20:26,801 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 06:20:26,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 06:20:26,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 06:20:26,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 06:20:26,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 [2021-11-03 06:20:26,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 06:20:27,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 06:20:27,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 06:20:27,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 06:20:27,019 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 06:20:27,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2021-11-03 06:20:27,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d50360a5/c09435ebdeb7482d81eb457ec7fecab7/FLAGd636fa5b2 [2021-11-03 06:20:27,476 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 06:20:27,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2021-11-03 06:20:27,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d50360a5/c09435ebdeb7482d81eb457ec7fecab7/FLAGd636fa5b2 [2021-11-03 06:20:27,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d50360a5/c09435ebdeb7482d81eb457ec7fecab7 [2021-11-03 06:20:27,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 06:20:27,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 06:20:27,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 06:20:27,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 06:20:27,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 06:20:27,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 06:20:27" (1/1) ... [2021-11-03 06:20:27,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e42b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:20:27, skipping insertion in model container [2021-11-03 06:20:27,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 06:20:27" (1/1) ... [2021-11-03 06:20:27,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 06:20:27,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 06:20:28,130 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_test10-1.i[33022,33035] [2021-11-03 06:20:28,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 06:20:28,280 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 06:20:28,306 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_test10-1.i[33022,33035] [2021-11-03 06:20:28,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 06:20:28,428 INFO L208 MainTranslator]: Completed translation [2021-11-03 06:20:28,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:20:28 WrapperNode [2021-11-03 06:20:28,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 06:20:28,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 06:20:28,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 06:20:28,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 06:20:28,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:20:28" (1/1) ... [2021-11-03 06:20:28,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:20:28" (1/1) ... [2021-11-03 06:20:28,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 06:20:28,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 06:20:28,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 06:20:28,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 06:20:28,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:20:28" (1/1) ... [2021-11-03 06:20:28,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:20:28" (1/1) ... [2021-11-03 06:20:28,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:20:28" (1/1) ... [2021-11-03 06:20:28,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:20:28" (1/1) ... [2021-11-03 06:20:28,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:20:28" (1/1) ... [2021-11-03 06:20:28,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:20:28" (1/1) ... [2021-11-03 06:20:28,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:20:28" (1/1) ... [2021-11-03 06:20:28,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 06:20:28,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 06:20:28,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 06:20:28,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 06:20:28,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:20:28" (1/1) ... [2021-11-03 06:20:28,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 06:20:28,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:20:28,681 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) [2021-11-03 06:20:28,713 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 [2021-11-03 06:20:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 06:20:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 06:20:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 06:20:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 06:20:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 06:20:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 06:20:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 06:20:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 06:20:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 06:20:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 06:20:28,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 06:20:29,411 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 06:20:29,411 INFO L299 CfgBuilder]: Removed 207 assume(true) statements. [2021-11-03 06:20:29,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 06:20:29 BoogieIcfgContainer [2021-11-03 06:20:29,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 06:20:29,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 06:20:29,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 06:20:29,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 06:20:29,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 06:20:27" (1/3) ... [2021-11-03 06:20:29,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e29428d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 06:20:29, skipping insertion in model container [2021-11-03 06:20:29,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:20:28" (2/3) ... [2021-11-03 06:20:29,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e29428d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 06:20:29, skipping insertion in model container [2021-11-03 06:20:29,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 06:20:29" (3/3) ... [2021-11-03 06:20:29,431 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test10-1.i [2021-11-03 06:20:29,434 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 06:20:29,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-03 06:20:29,464 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 06:20:29,468 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 [2021-11-03 06:20:29,468 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-03 06:20:29,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 470 states, 453 states have (on average 1.7461368653421634) internal successors, (791), 469 states have internal predecessors, (791), 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) [2021-11-03 06:20:29,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 06:20:29,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:29,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:20:29,487 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:29,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:29,491 INFO L85 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2021-11-03 06:20:29,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:29,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847615342] [2021-11-03 06:20:29,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:29,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:20:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:20:29,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:20:29,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847615342] [2021-11-03 06:20:29,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847615342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:20:29,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:20:29,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 06:20:29,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934864146] [2021-11-03 06:20:29,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 06:20:29,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:20:29,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 06:20:29,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 06:20:29,664 INFO L87 Difference]: Start difference. First operand has 470 states, 453 states have (on average 1.7461368653421634) internal successors, (791), 469 states have internal predecessors, (791), 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) [2021-11-03 06:20:30,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:20:30,439 INFO L93 Difference]: Finished difference Result 938 states and 1580 transitions. [2021-11-03 06:20:30,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 06:20:30,441 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 [2021-11-03 06:20:30,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:20:30,454 INFO L225 Difference]: With dead ends: 938 [2021-11-03 06:20:30,455 INFO L226 Difference]: Without dead ends: 465 [2021-11-03 06:20:30,461 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 [2021-11-03 06:20:30,464 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 570.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 719.55ms IncrementalHoareTripleChecker+Time [2021-11-03 06:20:30,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 617 Unknown, 0 Unchecked, 2.67ms Time], IncrementalHoareTripleChecker [0 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 719.55ms Time] [2021-11-03 06:20:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-03 06:20:30,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2021-11-03 06:20:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 449 states have (on average 1.354120267260579) internal successors, (608), 464 states have internal predecessors, (608), 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) [2021-11-03 06:20:30,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2021-11-03 06:20:30,517 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2021-11-03 06:20:30,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:20:30,518 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2021-11-03 06:20:30,518 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) [2021-11-03 06:20:30,518 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2021-11-03 06:20:30,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 06:20:30,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:30,521 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] [2021-11-03 06:20:30,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 06:20:30,521 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:30,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:30,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2021-11-03 06:20:30,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:30,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485410326] [2021-11-03 06:20:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:30,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:20:30,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:20:30,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:20:30,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485410326] [2021-11-03 06:20:30,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485410326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:20:30,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:20:30,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:20:30,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984906193] [2021-11-03 06:20:30,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:20:30,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:20:30,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:20:30,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:20:30,604 INFO L87 Difference]: Start difference. First operand 465 states and 608 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) [2021-11-03 06:20:31,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:20:31,819 INFO L93 Difference]: Finished difference Result 831 states and 1087 transitions. [2021-11-03 06:20:31,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:20:31,819 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 [2021-11-03 06:20:31,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:20:31,821 INFO L225 Difference]: With dead ends: 831 [2021-11-03 06:20:31,821 INFO L226 Difference]: Without dead ends: 540 [2021-11-03 06:20:31,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.99ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:20:31,823 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 961.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.53ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1171.45ms IncrementalHoareTripleChecker+Time [2021-11-03 06:20:31,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 1825 Unknown, 0 Unchecked, 6.53ms Time], IncrementalHoareTripleChecker [2 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 1171.45ms Time] [2021-11-03 06:20:31,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-03 06:20:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 467. [2021-11-03 06:20:31,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 451 states have (on average 1.352549889135255) internal successors, (610), 466 states have internal predecessors, (610), 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) [2021-11-03 06:20:31,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 610 transitions. [2021-11-03 06:20:31,834 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 610 transitions. Word has length 44 [2021-11-03 06:20:31,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:20:31,834 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 610 transitions. [2021-11-03 06:20:31,834 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) [2021-11-03 06:20:31,835 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 610 transitions. [2021-11-03 06:20:31,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 06:20:31,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:31,837 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] [2021-11-03 06:20:31,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 06:20:31,837 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:31,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:31,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1325558428, now seen corresponding path program 1 times [2021-11-03 06:20:31,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:31,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461817015] [2021-11-03 06:20:31,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:31,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:31,860 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:20:31,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964067205] [2021-11-03 06:20:31,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:31,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:20:31,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:20:31,878 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) [2021-11-03 06:20:31,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 06:20:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:20:32,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:20:32,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:20:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:20:32,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:20:32,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:20:32,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461817015] [2021-11-03 06:20:32,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:20:32,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964067205] [2021-11-03 06:20:32,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964067205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:20:32,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:20:32,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:20:32,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789117805] [2021-11-03 06:20:32,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:20:32,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:20:32,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:20:32,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:20:32,266 INFO L87 Difference]: Start difference. First operand 467 states and 610 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:20:33,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:20:33,820 INFO L93 Difference]: Finished difference Result 951 states and 1247 transitions. [2021-11-03 06:20:33,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:20:33,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-03 06:20:33,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:20:33,822 INFO L225 Difference]: With dead ends: 951 [2021-11-03 06:20:33,822 INFO L226 Difference]: Without dead ends: 488 [2021-11-03 06:20:33,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:20:33,824 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1370.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.68ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1531.23ms IncrementalHoareTripleChecker+Time [2021-11-03 06:20:33,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 1233 Unknown, 0 Unchecked, 2.68ms Time], IncrementalHoareTripleChecker [28 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1531.23ms Time] [2021-11-03 06:20:33,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-03 06:20:33,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2021-11-03 06:20:33,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 471 states have (on average 1.3375796178343948) internal successors, (630), 486 states have internal predecessors, (630), 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) [2021-11-03 06:20:33,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 630 transitions. [2021-11-03 06:20:33,831 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 630 transitions. Word has length 97 [2021-11-03 06:20:33,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:20:33,832 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 630 transitions. [2021-11-03 06:20:33,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:20:33,832 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 630 transitions. [2021-11-03 06:20:33,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 06:20:33,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:33,834 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] [2021-11-03 06:20:33,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 06:20:34,052 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 [2021-11-03 06:20:34,052 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:34,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:34,053 INFO L85 PathProgramCache]: Analyzing trace with hash 948433376, now seen corresponding path program 1 times [2021-11-03 06:20:34,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:34,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271387547] [2021-11-03 06:20:34,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:34,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:34,068 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:20:34,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888927355] [2021-11-03 06:20:34,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:34,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:20:34,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:20:34,072 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) [2021-11-03 06:20:34,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 06:20:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:20:34,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:20:34,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:20:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 06:20:34,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:20:34,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:20:34,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271387547] [2021-11-03 06:20:34,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:20:34,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888927355] [2021-11-03 06:20:34,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888927355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:20:34,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:20:34,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:20:34,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162931221] [2021-11-03 06:20:34,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:20:34,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:20:34,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:20:34,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:20:34,378 INFO L87 Difference]: Start difference. First operand 487 states and 630 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) [2021-11-03 06:20:36,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:20:36,614 INFO L93 Difference]: Finished difference Result 787 states and 1024 transitions. [2021-11-03 06:20:36,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:20:36,614 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 97 [2021-11-03 06:20:36,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:20:36,621 INFO L225 Difference]: With dead ends: 787 [2021-11-03 06:20:36,621 INFO L226 Difference]: Without dead ends: 508 [2021-11-03 06:20:36,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:20:36,624 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2055.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.42ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2209.58ms IncrementalHoareTripleChecker+Time [2021-11-03 06:20:36,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 1233 Unknown, 0 Unchecked, 5.42ms Time], IncrementalHoareTripleChecker [28 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 2209.58ms Time] [2021-11-03 06:20:36,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-03 06:20:36,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2021-11-03 06:20:36,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 491 states have (on average 1.3238289205702647) internal successors, (650), 506 states have internal predecessors, (650), 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) [2021-11-03 06:20:36,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 650 transitions. [2021-11-03 06:20:36,636 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 650 transitions. Word has length 97 [2021-11-03 06:20:36,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:20:36,636 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 650 transitions. [2021-11-03 06:20:36,637 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) [2021-11-03 06:20:36,637 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 650 transitions. [2021-11-03 06:20:36,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 06:20:36,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:36,638 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] [2021-11-03 06:20:36,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 06:20:36,841 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 [2021-11-03 06:20:36,841 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:36,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:36,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1352389214, now seen corresponding path program 1 times [2021-11-03 06:20:36,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:36,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262011672] [2021-11-03 06:20:36,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:36,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:36,857 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:20:36,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883450802] [2021-11-03 06:20:36,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:36,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:20:36,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:20:36,859 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) [2021-11-03 06:20:36,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 06:20:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:20:37,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:20:37,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:20:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:20:37,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:20:37,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:20:37,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262011672] [2021-11-03 06:20:37,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:20:37,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883450802] [2021-11-03 06:20:37,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883450802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:20:37,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:20:37,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:20:37,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541821826] [2021-11-03 06:20:37,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:20:37,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:20:37,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:20:37,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:20:37,212 INFO L87 Difference]: Start difference. First operand 507 states and 650 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:20:38,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:20:38,384 INFO L93 Difference]: Finished difference Result 1086 states and 1400 transitions. [2021-11-03 06:20:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:20:38,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-03 06:20:38,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:20:38,387 INFO L225 Difference]: With dead ends: 1086 [2021-11-03 06:20:38,387 INFO L226 Difference]: Without dead ends: 583 [2021-11-03 06:20:38,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:20:38,388 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 596 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 911.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.98ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1136.17ms IncrementalHoareTripleChecker+Time [2021-11-03 06:20:38,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 0 Invalid, 1574 Unknown, 0 Unchecked, 3.98ms Time], IncrementalHoareTripleChecker [24 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1136.17ms Time] [2021-11-03 06:20:38,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-03 06:20:38,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 493. [2021-11-03 06:20:38,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 477 states have (on average 1.3186582809224319) internal successors, (629), 492 states have internal predecessors, (629), 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) [2021-11-03 06:20:38,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 629 transitions. [2021-11-03 06:20:38,396 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 629 transitions. Word has length 97 [2021-11-03 06:20:38,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:20:38,397 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 629 transitions. [2021-11-03 06:20:38,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:20:38,398 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 629 transitions. [2021-11-03 06:20:38,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 06:20:38,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:38,400 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] [2021-11-03 06:20:38,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 06:20:38,615 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 [2021-11-03 06:20:38,615 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:38,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:38,616 INFO L85 PathProgramCache]: Analyzing trace with hash 881478960, now seen corresponding path program 1 times [2021-11-03 06:20:38,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:38,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925864968] [2021-11-03 06:20:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:38,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:38,637 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:20:38,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685314559] [2021-11-03 06:20:38,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:38,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:20:38,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:20:38,638 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) [2021-11-03 06:20:38,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 06:20:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:20:38,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:20:38,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:20:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 06:20:38,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:20:38,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:20:38,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925864968] [2021-11-03 06:20:38,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:20:38,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685314559] [2021-11-03 06:20:38,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685314559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:20:38,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:20:38,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:20:38,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252140241] [2021-11-03 06:20:38,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:20:38,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:20:38,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:20:38,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:20:38,903 INFO L87 Difference]: Start difference. First operand 493 states and 629 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) [2021-11-03 06:20:39,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:20:39,910 INFO L93 Difference]: Finished difference Result 761 states and 972 transitions. [2021-11-03 06:20:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:20:39,911 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 97 [2021-11-03 06:20:39,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:20:39,912 INFO L225 Difference]: With dead ends: 761 [2021-11-03 06:20:39,912 INFO L226 Difference]: Without dead ends: 480 [2021-11-03 06:20:39,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.85ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:20:39,913 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 365 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 825.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.07ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 981.24ms IncrementalHoareTripleChecker+Time [2021-11-03 06:20:39,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 0 Invalid, 1428 Unknown, 0 Unchecked, 3.07ms Time], IncrementalHoareTripleChecker [24 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 981.24ms Time] [2021-11-03 06:20:39,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-03 06:20:39,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2021-11-03 06:20:39,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 463 states have (on average 1.3131749460043196) internal successors, (608), 478 states have internal predecessors, (608), 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) [2021-11-03 06:20:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 608 transitions. [2021-11-03 06:20:39,924 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 608 transitions. Word has length 97 [2021-11-03 06:20:39,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:20:39,926 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 608 transitions. [2021-11-03 06:20:39,926 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) [2021-11-03 06:20:39,926 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 608 transitions. [2021-11-03 06:20:39,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 06:20:39,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:39,927 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] [2021-11-03 06:20:39,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 06:20:40,141 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 [2021-11-03 06:20:40,142 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:40,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:40,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2021-11-03 06:20:40,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:40,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057499139] [2021-11-03 06:20:40,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:40,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:40,153 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:20:40,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029400026] [2021-11-03 06:20:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:40,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:20:40,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:20:40,154 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) [2021-11-03 06:20:40,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 06:20:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:20:40,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 06:20:40,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:20:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:20:40,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:20:40,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:20:40,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057499139] [2021-11-03 06:20:40,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:20:40,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029400026] [2021-11-03 06:20:40,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029400026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:20:40,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:20:40,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:20:40,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578135533] [2021-11-03 06:20:40,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:20:40,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:20:40,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:20:40,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:20:40,529 INFO L87 Difference]: Start difference. First operand 479 states and 608 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:20:41,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:20:41,496 INFO L93 Difference]: Finished difference Result 1231 states and 1562 transitions. [2021-11-03 06:20:41,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:20:41,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-03 06:20:41,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:20:41,498 INFO L225 Difference]: With dead ends: 1231 [2021-11-03 06:20:41,498 INFO L226 Difference]: Without dead ends: 756 [2021-11-03 06:20:41,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:20:41,499 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 317 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 718.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.11ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 933.76ms IncrementalHoareTripleChecker+Time [2021-11-03 06:20:41,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 0 Invalid, 1178 Unknown, 0 Unchecked, 2.11ms Time], IncrementalHoareTripleChecker [4 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 933.76ms Time] [2021-11-03 06:20:41,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-03 06:20:41,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 721. [2021-11-03 06:20:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 705 states have (on average 1.3191489361702127) internal successors, (930), 720 states have internal predecessors, (930), 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) [2021-11-03 06:20:41,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 930 transitions. [2021-11-03 06:20:41,511 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 930 transitions. Word has length 97 [2021-11-03 06:20:41,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:20:41,512 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 930 transitions. [2021-11-03 06:20:41,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:20:41,512 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 930 transitions. [2021-11-03 06:20:41,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 06:20:41,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:41,513 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] [2021-11-03 06:20:41,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 06:20:41,727 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 [2021-11-03 06:20:41,727 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:41,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:41,728 INFO L85 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2021-11-03 06:20:41,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:41,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417727903] [2021-11-03 06:20:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:41,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:41,754 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:20:41,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265954455] [2021-11-03 06:20:41,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:41,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:20:41,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:20:41,758 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) [2021-11-03 06:20:41,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 06:20:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:20:41,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:20:41,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:20:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:20:42,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:20:42,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:20:42,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417727903] [2021-11-03 06:20:42,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:20:42,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265954455] [2021-11-03 06:20:42,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265954455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:20:42,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:20:42,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:20:42,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276901770] [2021-11-03 06:20:42,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:20:42,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:20:42,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:20:42,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:20:42,038 INFO L87 Difference]: Start difference. First operand 721 states and 930 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:20:43,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:20:43,016 INFO L93 Difference]: Finished difference Result 1400 states and 1809 transitions. [2021-11-03 06:20:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:20:43,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-03 06:20:43,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:20:43,020 INFO L225 Difference]: With dead ends: 1400 [2021-11-03 06:20:43,020 INFO L226 Difference]: Without dead ends: 727 [2021-11-03 06:20:43,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.36ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:20:43,022 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 812.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 954.43ms IncrementalHoareTripleChecker+Time [2021-11-03 06:20:43,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1190 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [6 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 954.43ms Time] [2021-11-03 06:20:43,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-03 06:20:43,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-11-03 06:20:43,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 711 states have (on average 1.3164556962025316) internal successors, (936), 726 states have internal predecessors, (936), 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) [2021-11-03 06:20:43,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 936 transitions. [2021-11-03 06:20:43,038 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 936 transitions. Word has length 104 [2021-11-03 06:20:43,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:20:43,039 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 936 transitions. [2021-11-03 06:20:43,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:20:43,039 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 936 transitions. [2021-11-03 06:20:43,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 06:20:43,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:43,040 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, 1] [2021-11-03 06:20:43,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 06:20:43,257 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 [2021-11-03 06:20:43,257 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:43,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:43,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2085853600, now seen corresponding path program 1 times [2021-11-03 06:20:43,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:43,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921573442] [2021-11-03 06:20:43,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:43,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:43,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:20:43,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179266312] [2021-11-03 06:20:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:43,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:20:43,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:20:43,276 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) [2021-11-03 06:20:43,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 06:20:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:20:43,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 06:20:43,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:20:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 06:20:43,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:20:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 06:20:43,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:20:43,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921573442] [2021-11-03 06:20:43,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:20:43,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179266312] [2021-11-03 06:20:43,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179266312] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:20:43,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:20:43,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-03 06:20:43,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446659680] [2021-11-03 06:20:43,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 06:20:43,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:20:43,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 06:20:43,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-03 06:20:43,743 INFO L87 Difference]: Start difference. First operand 727 states and 936 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2021-11-03 06:20:44,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:20:44,986 INFO L93 Difference]: Finished difference Result 1423 states and 1844 transitions. [2021-11-03 06:20:44,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 06:20:44,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-03 06:20:44,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:20:44,989 INFO L225 Difference]: With dead ends: 1423 [2021-11-03 06:20:44,989 INFO L226 Difference]: Without dead ends: 745 [2021-11-03 06:20:44,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.68ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-03 06:20:44,991 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 992.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.29ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1212.88ms IncrementalHoareTripleChecker+Time [2021-11-03 06:20:44,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2396 Unknown, 0 Unchecked, 4.29ms Time], IncrementalHoareTripleChecker [28 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 1212.88ms Time] [2021-11-03 06:20:44,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-11-03 06:20:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2021-11-03 06:20:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 729 states have (on average 1.308641975308642) internal successors, (954), 744 states have internal predecessors, (954), 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) [2021-11-03 06:20:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 954 transitions. [2021-11-03 06:20:45,003 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 954 transitions. Word has length 106 [2021-11-03 06:20:45,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:20:45,003 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 954 transitions. [2021-11-03 06:20:45,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2021-11-03 06:20:45,003 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 954 transitions. [2021-11-03 06:20:45,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 06:20:45,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:45,004 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, 1] [2021-11-03 06:20:45,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 06:20:45,219 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 [2021-11-03 06:20:45,220 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:45,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:45,220 INFO L85 PathProgramCache]: Analyzing trace with hash -899210817, now seen corresponding path program 2 times [2021-11-03 06:20:45,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:45,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360400881] [2021-11-03 06:20:45,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:45,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:45,233 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:20:45,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876758160] [2021-11-03 06:20:45,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 06:20:45,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:20:45,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:20:45,234 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) [2021-11-03 06:20:45,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 06:20:45,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 06:20:45,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:20:45,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 06:20:45,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:20:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 06:20:45,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:20:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 06:20:45,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:20:45,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360400881] [2021-11-03 06:20:45,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:20:45,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876758160] [2021-11-03 06:20:45,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876758160] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:20:45,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:20:45,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-03 06:20:45,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883746734] [2021-11-03 06:20:45,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 06:20:45,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:20:45,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 06:20:45,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-03 06:20:45,780 INFO L87 Difference]: Start difference. First operand 745 states and 954 transitions. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 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) [2021-11-03 06:20:46,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:20:46,850 INFO L93 Difference]: Finished difference Result 1474 states and 1913 transitions. [2021-11-03 06:20:46,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 06:20:46,851 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 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 112 [2021-11-03 06:20:46,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:20:46,853 INFO L225 Difference]: With dead ends: 1474 [2021-11-03 06:20:46,854 INFO L226 Difference]: Without dead ends: 781 [2021-11-03 06:20:46,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.10ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-03 06:20:46,855 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 1806 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 858.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1042.27ms IncrementalHoareTripleChecker+Time [2021-11-03 06:20:46,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1905 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [99 Valid, 1806 Invalid, 0 Unknown, 0 Unchecked, 1042.27ms Time] [2021-11-03 06:20:46,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-11-03 06:20:46,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 781. [2021-11-03 06:20:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 765 states have (on average 1.2941176470588236) internal successors, (990), 780 states have internal predecessors, (990), 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) [2021-11-03 06:20:46,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 990 transitions. [2021-11-03 06:20:46,871 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 990 transitions. Word has length 112 [2021-11-03 06:20:46,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:20:46,871 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 990 transitions. [2021-11-03 06:20:46,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 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) [2021-11-03 06:20:46,871 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 990 transitions. [2021-11-03 06:20:46,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-03 06:20:46,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:46,872 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] [2021-11-03 06:20:46,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-03 06:20:47,079 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 [2021-11-03 06:20:47,079 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:47,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:47,080 INFO L85 PathProgramCache]: Analyzing trace with hash 758407135, now seen corresponding path program 3 times [2021-11-03 06:20:47,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:47,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359658688] [2021-11-03 06:20:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:47,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:47,098 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:20:47,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1021056290] [2021-11-03 06:20:47,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 06:20:47,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:20:47,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:20:47,106 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) [2021-11-03 06:20:47,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 06:20:47,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 06:20:47,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:20:47,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 06:20:47,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:20:47,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-03 06:20:47,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2021-11-03 06:20:47,471 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 06:20:47,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:20:47,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:20:47,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359658688] [2021-11-03 06:20:47,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:20:47,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021056290] [2021-11-03 06:20:47,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021056290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:20:47,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:20:47,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 06:20:47,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139467885] [2021-11-03 06:20:47,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 06:20:47,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:20:47,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 06:20:47,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:20:47,473 INFO L87 Difference]: Start difference. First operand 781 states and 990 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:20:49,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:20:49,301 INFO L93 Difference]: Finished difference Result 1452 states and 1842 transitions. [2021-11-03 06:20:49,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 06:20:49,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-03 06:20:49,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:20:49,304 INFO L225 Difference]: With dead ends: 1452 [2021-11-03 06:20:49,304 INFO L226 Difference]: Without dead ends: 781 [2021-11-03 06:20:49,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.22ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 06:20:49,306 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1518.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.23ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1787.06ms IncrementalHoareTripleChecker+Time [2021-11-03 06:20:49,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 2387 Unknown, 0 Unchecked, 4.23ms Time], IncrementalHoareTripleChecker [12 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 1787.06ms Time] [2021-11-03 06:20:49,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-11-03 06:20:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 781. [2021-11-03 06:20:49,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 765 states have (on average 1.29281045751634) internal successors, (989), 780 states have internal predecessors, (989), 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) [2021-11-03 06:20:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 989 transitions. [2021-11-03 06:20:49,319 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 989 transitions. Word has length 124 [2021-11-03 06:20:49,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:20:49,319 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 989 transitions. [2021-11-03 06:20:49,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:20:49,319 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 989 transitions. [2021-11-03 06:20:49,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 06:20:49,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:49,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:20:49,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-03 06:20:49,540 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 [2021-11-03 06:20:49,541 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:49,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:49,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1889355962, now seen corresponding path program 1 times [2021-11-03 06:20:49,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:49,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594506589] [2021-11-03 06:20:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:49,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:49,571 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:20:49,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048549248] [2021-11-03 06:20:49,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:49,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:20:49,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:20:49,591 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) [2021-11-03 06:20:49,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 06:20:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:20:49,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:20:49,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:20:49,975 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 06:20:49,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:20:49,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:20:49,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594506589] [2021-11-03 06:20:49,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:20:49,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048549248] [2021-11-03 06:20:49,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048549248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:20:49,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:20:49,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:20:49,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252457553] [2021-11-03 06:20:49,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:20:49,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:20:49,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:20:49,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:20:49,978 INFO L87 Difference]: Start difference. First operand 781 states and 989 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-11-03 06:20:50,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:20:50,777 INFO L93 Difference]: Finished difference Result 1586 states and 2019 transitions. [2021-11-03 06:20:50,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:20:50,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 171 [2021-11-03 06:20:50,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:20:50,780 INFO L225 Difference]: With dead ends: 1586 [2021-11-03 06:20:50,780 INFO L226 Difference]: Without dead ends: 823 [2021-11-03 06:20:50,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:20:50,782 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 631.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 778.16ms IncrementalHoareTripleChecker+Time [2021-11-03 06:20:50,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 1205 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [28 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 778.16ms Time] [2021-11-03 06:20:50,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-11-03 06:20:50,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 821. [2021-11-03 06:20:50,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 805 states have (on average 1.2782608695652173) internal successors, (1029), 820 states have internal predecessors, (1029), 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) [2021-11-03 06:20:50,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1029 transitions. [2021-11-03 06:20:50,796 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1029 transitions. Word has length 171 [2021-11-03 06:20:50,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:20:50,796 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 1029 transitions. [2021-11-03 06:20:50,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-11-03 06:20:50,796 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1029 transitions. [2021-11-03 06:20:50,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 06:20:50,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:50,798 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:20:50,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-03 06:20:51,010 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 [2021-11-03 06:20:51,011 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:51,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:51,011 INFO L85 PathProgramCache]: Analyzing trace with hash 508631876, now seen corresponding path program 1 times [2021-11-03 06:20:51,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:51,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189933337] [2021-11-03 06:20:51,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:51,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:51,023 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:20:51,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858865865] [2021-11-03 06:20:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:51,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:20:51,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:20:51,024 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) [2021-11-03 06:20:51,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-03 06:20:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:20:51,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:20:51,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:20:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 06:20:51,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:20:51,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:20:51,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189933337] [2021-11-03 06:20:51,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:20:51,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858865865] [2021-11-03 06:20:51,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858865865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:20:51,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:20:51,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:20:51,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388266679] [2021-11-03 06:20:51,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:20:51,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:20:51,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:20:51,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:20:51,416 INFO L87 Difference]: Start difference. First operand 821 states and 1029 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2021-11-03 06:20:52,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:20:52,157 INFO L93 Difference]: Finished difference Result 1580 states and 1984 transitions. [2021-11-03 06:20:52,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:20:52,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 171 [2021-11-03 06:20:52,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:20:52,160 INFO L225 Difference]: With dead ends: 1580 [2021-11-03 06:20:52,160 INFO L226 Difference]: Without dead ends: 795 [2021-11-03 06:20:52,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.66ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:20:52,162 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 582 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 577.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.79ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 713.70ms IncrementalHoareTripleChecker+Time [2021-11-03 06:20:52,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 0 Invalid, 1212 Unknown, 0 Unchecked, 1.79ms Time], IncrementalHoareTripleChecker [25 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 713.70ms Time] [2021-11-03 06:20:52,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-11-03 06:20:52,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 793. [2021-11-03 06:20:52,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 777 states have (on average 1.2702702702702702) internal successors, (987), 792 states have internal predecessors, (987), 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) [2021-11-03 06:20:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 987 transitions. [2021-11-03 06:20:52,176 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 987 transitions. Word has length 171 [2021-11-03 06:20:52,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:20:52,176 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 987 transitions. [2021-11-03 06:20:52,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2021-11-03 06:20:52,176 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 987 transitions. [2021-11-03 06:20:52,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 06:20:52,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:52,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:20:52,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-03 06:20:52,391 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 [2021-11-03 06:20:52,392 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:52,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:52,392 INFO L85 PathProgramCache]: Analyzing trace with hash -288240300, now seen corresponding path program 1 times [2021-11-03 06:20:52,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:52,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571130903] [2021-11-03 06:20:52,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:52,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:52,402 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:20:52,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158616021] [2021-11-03 06:20:52,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:52,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:20:52,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:20:52,403 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) [2021-11-03 06:20:52,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 06:20:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:20:52,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 06:20:52,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:20:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 06:20:52,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:20:52,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:20:52,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571130903] [2021-11-03 06:20:52,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:20:52,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158616021] [2021-11-03 06:20:52,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158616021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:20:52,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:20:52,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 06:20:52,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279635808] [2021-11-03 06:20:52,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 06:20:52,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:20:52,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 06:20:52,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:20:52,809 INFO L87 Difference]: Start difference. First operand 793 states and 987 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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) [2021-11-03 06:20:54,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:20:54,417 INFO L93 Difference]: Finished difference Result 2335 states and 2912 transitions. [2021-11-03 06:20:54,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 06:20:54,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 171 [2021-11-03 06:20:54,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:20:54,422 INFO L225 Difference]: With dead ends: 2335 [2021-11-03 06:20:54,422 INFO L226 Difference]: Without dead ends: 1580 [2021-11-03 06:20:54,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.17ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:20:54,423 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 568 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1260.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.17ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1547.85ms IncrementalHoareTripleChecker+Time [2021-11-03 06:20:54,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 0 Invalid, 2393 Unknown, 0 Unchecked, 5.17ms Time], IncrementalHoareTripleChecker [24 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 1547.85ms Time] [2021-11-03 06:20:54,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-11-03 06:20:54,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 839. [2021-11-03 06:20:54,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 823 states have (on average 1.2600243013365735) internal successors, (1037), 838 states have internal predecessors, (1037), 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) [2021-11-03 06:20:54,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1037 transitions. [2021-11-03 06:20:54,439 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1037 transitions. Word has length 171 [2021-11-03 06:20:54,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:20:54,439 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1037 transitions. [2021-11-03 06:20:54,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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) [2021-11-03 06:20:54,440 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1037 transitions. [2021-11-03 06:20:54,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 06:20:54,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:54,441 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:20:54,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 06:20:54,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-03 06:20:54,656 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:54,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:54,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1805536166, now seen corresponding path program 1 times [2021-11-03 06:20:54,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:54,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673910073] [2021-11-03 06:20:54,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:54,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:54,666 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:20:54,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943263968] [2021-11-03 06:20:54,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:54,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:20:54,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:20:54,667 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:20:54,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-03 06:20:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:20:54,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 06:20:54,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:20:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 06:20:55,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:20:55,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:20:55,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673910073] [2021-11-03 06:20:55,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:20:55,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943263968] [2021-11-03 06:20:55,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943263968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:20:55,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:20:55,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:20:55,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035773541] [2021-11-03 06:20:55,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:20:55,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:20:55,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:20:55,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:20:55,077 INFO L87 Difference]: Start difference. First operand 839 states and 1037 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2021-11-03 06:20:55,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:20:55,953 INFO L93 Difference]: Finished difference Result 1587 states and 1971 transitions. [2021-11-03 06:20:55,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:20:55,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 171 [2021-11-03 06:20:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:20:55,955 INFO L225 Difference]: With dead ends: 1587 [2021-11-03 06:20:55,955 INFO L226 Difference]: Without dead ends: 775 [2021-11-03 06:20:55,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.31ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:20:55,957 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 562 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 678.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.14ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 845.40ms IncrementalHoareTripleChecker+Time [2021-11-03 06:20:55,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 0 Invalid, 1182 Unknown, 0 Unchecked, 2.14ms Time], IncrementalHoareTripleChecker [7 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 845.40ms Time] [2021-11-03 06:20:55,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-11-03 06:20:55,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2021-11-03 06:20:55,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 759 states have (on average 1.2635046113306982) internal successors, (959), 774 states have internal predecessors, (959), 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) [2021-11-03 06:20:55,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 959 transitions. [2021-11-03 06:20:55,971 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 959 transitions. Word has length 171 [2021-11-03 06:20:55,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:20:55,971 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 959 transitions. [2021-11-03 06:20:55,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2021-11-03 06:20:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 959 transitions. [2021-11-03 06:20:55,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 06:20:55,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:55,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:20:55,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-03 06:20:56,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-03 06:20:56,191 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:56,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:56,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2109747538, now seen corresponding path program 1 times [2021-11-03 06:20:56,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:56,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78529367] [2021-11-03 06:20:56,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:56,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:56,203 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:20:56,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573607835] [2021-11-03 06:20:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:56,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:20:56,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:20:56,205 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:20:56,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-03 06:20:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:20:56,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 06:20:56,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:20:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-03 06:20:56,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:20:57,060 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-03 06:20:57,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:20:57,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78529367] [2021-11-03 06:20:57,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:20:57,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573607835] [2021-11-03 06:20:57,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573607835] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:20:57,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:20:57,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-03 06:20:57,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619990871] [2021-11-03 06:20:57,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-03 06:20:57,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:20:57,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-03 06:20:57,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-03 06:20:57,075 INFO L87 Difference]: Start difference. First operand 775 states and 959 transitions. Second operand has 24 states, 24 states have (on average 7.25) internal successors, (174), 24 states have internal predecessors, (174), 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) [2021-11-03 06:20:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:20:59,561 INFO L93 Difference]: Finished difference Result 1567 states and 2005 transitions. [2021-11-03 06:20:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 06:20:59,562 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.25) internal successors, (174), 24 states have internal predecessors, (174), 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 171 [2021-11-03 06:20:59,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:20:59,564 INFO L225 Difference]: With dead ends: 1567 [2021-11-03 06:20:59,564 INFO L226 Difference]: Without dead ends: 847 [2021-11-03 06:20:59,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 258.70ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-03 06:20:59,565 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 4093 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1972.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.43ms SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 4093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2405.56ms IncrementalHoareTripleChecker+Time [2021-11-03 06:20:59,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 4299 Unknown, 0 Unchecked, 10.43ms Time], IncrementalHoareTripleChecker [206 Valid, 4093 Invalid, 0 Unknown, 0 Unchecked, 2405.56ms Time] [2021-11-03 06:20:59,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-11-03 06:20:59,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2021-11-03 06:20:59,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 831 states have (on average 1.2406738868832732) internal successors, (1031), 846 states have internal predecessors, (1031), 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) [2021-11-03 06:20:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1031 transitions. [2021-11-03 06:20:59,580 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1031 transitions. Word has length 171 [2021-11-03 06:20:59,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:20:59,580 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 1031 transitions. [2021-11-03 06:20:59,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.25) internal successors, (174), 24 states have internal predecessors, (174), 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) [2021-11-03 06:20:59,580 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1031 transitions. [2021-11-03 06:20:59,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-03 06:20:59,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:20:59,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:20:59,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-03 06:20:59,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:20:59,799 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:20:59,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:20:59,799 INFO L85 PathProgramCache]: Analyzing trace with hash 416222354, now seen corresponding path program 2 times [2021-11-03 06:20:59,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:20:59,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460423593] [2021-11-03 06:20:59,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:20:59,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:20:59,810 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:20:59,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123084877] [2021-11-03 06:20:59,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 06:20:59,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:20:59,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:20:59,811 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:20:59,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-03 06:21:00,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 06:21:00,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:21:00,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 06:21:00,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:21:00,526 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-03 06:21:00,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:21:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-03 06:21:01,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:21:01,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460423593] [2021-11-03 06:21:01,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:21:01,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123084877] [2021-11-03 06:21:01,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123084877] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:21:01,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:21:01,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-03 06:21:01,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809573541] [2021-11-03 06:21:01,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-03 06:21:01,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:21:01,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-03 06:21:01,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 06:21:01,663 INFO L87 Difference]: Start difference. First operand 847 states and 1031 transitions. Second operand has 48 states, 48 states have (on average 4.125) internal successors, (198), 48 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:21:04,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:21:04,806 INFO L93 Difference]: Finished difference Result 1759 states and 2257 transitions. [2021-11-03 06:21:04,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-03 06:21:04,806 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.125) internal successors, (198), 48 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-11-03 06:21:04,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:21:04,809 INFO L225 Difference]: With dead ends: 1759 [2021-11-03 06:21:04,809 INFO L226 Difference]: Without dead ends: 979 [2021-11-03 06:21:04,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1080.85ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 06:21:04,811 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 4189 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2428.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.16ms SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 4189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3013.79ms IncrementalHoareTripleChecker+Time [2021-11-03 06:21:04,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 4657 Unknown, 0 Unchecked, 8.16ms Time], IncrementalHoareTripleChecker [468 Valid, 4189 Invalid, 0 Unknown, 0 Unchecked, 3013.79ms Time] [2021-11-03 06:21:04,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2021-11-03 06:21:04,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 979. [2021-11-03 06:21:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 963 states have (on average 1.2076843198338525) internal successors, (1163), 978 states have internal predecessors, (1163), 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) [2021-11-03 06:21:04,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1163 transitions. [2021-11-03 06:21:04,828 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1163 transitions. Word has length 195 [2021-11-03 06:21:04,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:21:04,829 INFO L470 AbstractCegarLoop]: Abstraction has 979 states and 1163 transitions. [2021-11-03 06:21:04,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.125) internal successors, (198), 48 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:21:04,829 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1163 transitions. [2021-11-03 06:21:04,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-03 06:21:04,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:21:04,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:21:04,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-03 06:21:05,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-03 06:21:05,046 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:21:05,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:21:05,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1136112334, now seen corresponding path program 3 times [2021-11-03 06:21:05,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:21:05,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235039112] [2021-11-03 06:21:05,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:21:05,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:21:05,059 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:21:05,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287653915] [2021-11-03 06:21:05,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 06:21:05,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:21:05,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:21:05,061 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:21:05,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-03 06:21:05,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 06:21:05,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:21:05,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 06:21:05,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:21:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2021-11-03 06:21:05,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:21:05,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:21:05,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235039112] [2021-11-03 06:21:05,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:21:05,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287653915] [2021-11-03 06:21:05,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287653915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:21:05,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:21:05,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:21:05,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369992309] [2021-11-03 06:21:05,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:21:05,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:21:05,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:21:05,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:21:05,591 INFO L87 Difference]: Start difference. First operand 979 states and 1163 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-11-03 06:21:06,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:21:06,742 INFO L93 Difference]: Finished difference Result 2139 states and 2607 transitions. [2021-11-03 06:21:06,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:21:06,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 239 [2021-11-03 06:21:06,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:21:06,745 INFO L225 Difference]: With dead ends: 2139 [2021-11-03 06:21:06,745 INFO L226 Difference]: Without dead ends: 1297 [2021-11-03 06:21:06,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:21:06,747 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 294 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 951.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.48ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1112.45ms IncrementalHoareTripleChecker+Time [2021-11-03 06:21:06,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 0 Invalid, 1148 Unknown, 0 Unchecked, 1.48ms Time], IncrementalHoareTripleChecker [4 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1112.45ms Time] [2021-11-03 06:21:06,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-11-03 06:21:06,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1140. [2021-11-03 06:21:06,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1124 states have (on average 1.2366548042704626) internal successors, (1390), 1139 states have internal predecessors, (1390), 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) [2021-11-03 06:21:06,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1390 transitions. [2021-11-03 06:21:06,768 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1390 transitions. Word has length 239 [2021-11-03 06:21:06,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:21:06,769 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1390 transitions. [2021-11-03 06:21:06,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-11-03 06:21:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1390 transitions. [2021-11-03 06:21:06,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-11-03 06:21:06,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:21:06,770 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:21:06,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-03 06:21:06,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-03 06:21:06,984 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:21:06,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:21:06,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1114316862, now seen corresponding path program 1 times [2021-11-03 06:21:06,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:21:06,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641962812] [2021-11-03 06:21:06,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:21:06,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:21:07,002 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:21:07,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411290605] [2021-11-03 06:21:07,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:21:07,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:21:07,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:21:07,005 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:21:07,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 06:21:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:21:07,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-03 06:21:07,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:21:08,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3962 backedges. 2 proven. 990 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-11-03 06:21:08,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:21:13,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3962 backedges. 2 proven. 990 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-11-03 06:21:13,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:21:13,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641962812] [2021-11-03 06:21:13,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:21:13,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411290605] [2021-11-03 06:21:13,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411290605] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:21:13,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:21:13,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 92 [2021-11-03 06:21:13,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080347614] [2021-11-03 06:21:13,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-03 06:21:13,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:21:13,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-03 06:21:13,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-03 06:21:13,403 INFO L87 Difference]: Start difference. First operand 1140 states and 1390 transitions. Second operand has 92 states, 92 states have (on average 2.7282608695652173) internal successors, (251), 92 states have internal predecessors, (251), 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) [2021-11-03 06:21:16,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:21:16,643 INFO L93 Difference]: Finished difference Result 2284 states and 2920 transitions. [2021-11-03 06:21:16,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-03 06:21:16,644 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.7282608695652173) internal successors, (251), 92 states have internal predecessors, (251), 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 334 [2021-11-03 06:21:16,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:21:16,647 INFO L225 Difference]: With dead ends: 2284 [2021-11-03 06:21:16,647 INFO L226 Difference]: Without dead ends: 1278 [2021-11-03 06:21:16,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4987.22ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-03 06:21:16,660 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 3728 mSolverCounterSat, 786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2338.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.19ms SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 3728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2912.07ms IncrementalHoareTripleChecker+Time [2021-11-03 06:21:16,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 4514 Unknown, 0 Unchecked, 8.19ms Time], IncrementalHoareTripleChecker [786 Valid, 3728 Invalid, 0 Unknown, 0 Unchecked, 2912.07ms Time] [2021-11-03 06:21:16,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-11-03 06:21:16,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1278. [2021-11-03 06:21:16,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1262 states have (on average 1.2107765451664025) internal successors, (1528), 1277 states have internal predecessors, (1528), 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) [2021-11-03 06:21:16,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1528 transitions. [2021-11-03 06:21:16,686 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1528 transitions. Word has length 334 [2021-11-03 06:21:16,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:21:16,686 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 1528 transitions. [2021-11-03 06:21:16,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.7282608695652173) internal successors, (251), 92 states have internal predecessors, (251), 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) [2021-11-03 06:21:16,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1528 transitions. [2021-11-03 06:21:16,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-11-03 06:21:16,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:21:16,689 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:21:16,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-03 06:21:16,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:21:16,904 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:21:16,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:21:16,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1833055330, now seen corresponding path program 2 times [2021-11-03 06:21:16,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:21:16,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843245548] [2021-11-03 06:21:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:21:16,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:21:16,922 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:21:16,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66845953] [2021-11-03 06:21:16,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 06:21:16,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:21:16,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:21:16,923 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:21:16,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-03 06:21:17,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 06:21:17,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:21:17,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 2162 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-03 06:21:17,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:21:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 10172 backedges. 2 proven. 4095 refuted. 0 times theorem prover too weak. 6075 trivial. 0 not checked. [2021-11-03 06:21:20,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:21:50,659 INFO L134 CoverageAnalysis]: Checked inductivity of 10172 backedges. 2 proven. 4095 refuted. 0 times theorem prover too weak. 6075 trivial. 0 not checked. [2021-11-03 06:21:50,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:21:50,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843245548] [2021-11-03 06:21:50,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:21:50,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66845953] [2021-11-03 06:21:50,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66845953] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:21:50,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:21:50,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 184 [2021-11-03 06:21:50,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910350994] [2021-11-03 06:21:50,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 184 states [2021-11-03 06:21:50,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:21:50,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2021-11-03 06:21:50,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2021-11-03 06:21:50,668 INFO L87 Difference]: Start difference. First operand 1278 states and 1528 transitions. Second operand has 184 states, 184 states have (on average 1.8641304347826086) internal successors, (343), 184 states have internal predecessors, (343), 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) [2021-11-03 06:21:59,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:21:59,317 INFO L93 Difference]: Finished difference Result 2652 states and 3426 transitions. [2021-11-03 06:21:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2021-11-03 06:21:59,318 INFO L78 Accepts]: Start accepts. Automaton has has 184 states, 184 states have (on average 1.8641304347826086) internal successors, (343), 184 states have internal predecessors, (343), 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 426 [2021-11-03 06:21:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:21:59,322 INFO L225 Difference]: With dead ends: 2652 [2021-11-03 06:21:59,322 INFO L226 Difference]: Without dead ends: 1554 [2021-11-03 06:21:59,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31739.97ms TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2021-11-03 06:21:59,326 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 4479 mSolverCounterSat, 1251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4969.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.25ms SdHoareTripleChecker+Time, 1251 IncrementalHoareTripleChecker+Valid, 4479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6219.48ms IncrementalHoareTripleChecker+Time [2021-11-03 06:21:59,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5730 Unknown, 0 Unchecked, 13.25ms Time], IncrementalHoareTripleChecker [1251 Valid, 4479 Invalid, 0 Unknown, 0 Unchecked, 6219.48ms Time] [2021-11-03 06:21:59,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-11-03 06:21:59,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1554. [2021-11-03 06:21:59,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1538 states have (on average 1.1729518855656698) internal successors, (1804), 1553 states have internal predecessors, (1804), 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) [2021-11-03 06:21:59,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1804 transitions. [2021-11-03 06:21:59,359 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1804 transitions. Word has length 426 [2021-11-03 06:21:59,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:21:59,359 INFO L470 AbstractCegarLoop]: Abstraction has 1554 states and 1804 transitions. [2021-11-03 06:21:59,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 184 states, 184 states have (on average 1.8641304347826086) internal successors, (343), 184 states have internal predecessors, (343), 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) [2021-11-03 06:21:59,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1804 transitions. [2021-11-03 06:21:59,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-11-03 06:21:59,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:21:59,363 INFO L514 BasicCegarLoop]: trace histogram [182, 182, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:21:59,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-03 06:21:59,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:21:59,572 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:21:59,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:21:59,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2138539426, now seen corresponding path program 3 times [2021-11-03 06:21:59,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:21:59,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172606089] [2021-11-03 06:21:59,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:21:59,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:21:59,595 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:21:59,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736117920] [2021-11-03 06:21:59,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 06:21:59,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:21:59,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:21:59,597 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:21:59,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-03 06:21:59,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 06:21:59,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:21:59,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 06:21:59,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:22:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 35288 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35286 trivial. 0 not checked. [2021-11-03 06:22:00,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:22:00,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:22:00,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172606089] [2021-11-03 06:22:00,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:22:00,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736117920] [2021-11-03 06:22:00,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736117920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:22:00,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:22:00,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:22:00,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758971531] [2021-11-03 06:22:00,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:22:00,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:22:00,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:22:00,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:22:00,863 INFO L87 Difference]: Start difference. First operand 1554 states and 1804 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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) [2021-11-03 06:22:01,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:22:01,877 INFO L93 Difference]: Finished difference Result 2357 states and 2769 transitions. [2021-11-03 06:22:01,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:22:01,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 610 [2021-11-03 06:22:01,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:22:01,880 INFO L225 Difference]: With dead ends: 2357 [2021-11-03 06:22:01,880 INFO L226 Difference]: Without dead ends: 1156 [2021-11-03 06:22:01,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.76ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:22:01,881 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 987 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 839.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.33ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 968.86ms IncrementalHoareTripleChecker+Time [2021-11-03 06:22:01,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 0 Invalid, 669 Unknown, 0 Unchecked, 2.33ms Time], IncrementalHoareTripleChecker [2 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 968.86ms Time] [2021-11-03 06:22:01,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-03 06:22:01,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1156. [2021-11-03 06:22:01,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1140 states have (on average 1.169298245614035) internal successors, (1333), 1155 states have internal predecessors, (1333), 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) [2021-11-03 06:22:01,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1333 transitions. [2021-11-03 06:22:01,909 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1333 transitions. Word has length 610 [2021-11-03 06:22:01,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:22:01,910 INFO L470 AbstractCegarLoop]: Abstraction has 1156 states and 1333 transitions. [2021-11-03 06:22:01,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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) [2021-11-03 06:22:01,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1333 transitions. [2021-11-03 06:22:01,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2021-11-03 06:22:01,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:22:01,913 INFO L514 BasicCegarLoop]: trace histogram [182, 182, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:22:01,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-03 06:22:02,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:22:02,119 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 06:22:02,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:22:02,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1511974763, now seen corresponding path program 1 times [2021-11-03 06:22:02,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:22:02,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942544096] [2021-11-03 06:22:02,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:22:02,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:22:02,146 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:22:02,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304322360] [2021-11-03 06:22:02,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:22:02,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:22:02,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:22:02,148 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:22:02,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-03 06:22:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:22:02,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 185 conjunts are in the unsatisfiable core [2021-11-03 06:22:02,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:22:14,671 INFO L134 CoverageAnalysis]: Checked inductivity of 35288 backedges. 2 proven. 16653 refuted. 0 times theorem prover too weak. 18633 trivial. 0 not checked. [2021-11-03 06:22:14,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... Killed by 15