./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.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_BER_test6-2.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 d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 05:01:41,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:01:41,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:01:41,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:01:41,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:01:41,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:01:41,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:01:41,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:01:41,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:01:41,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:01:41,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:01:41,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:01:41,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:01:41,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:01:41,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:01:41,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:01:41,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:01:41,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:01:41,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:01:41,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:01:41,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:01:41,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:01:41,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:01:41,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:01:41,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:01:41,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:01:41,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:01:41,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:01:41,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:01:41,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:01:41,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:01:41,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:01:41,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:01:41,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:01:41,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:01:41,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:01:41,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:01:41,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:01:41,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:01:41,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:01:41,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:01:41,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-03 05:01:41,495 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:01:41,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:01:41,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 05:01:41,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 05:01:41,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 05:01:41,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 05:01:41,502 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 05:01:41,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:01:41,503 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:01:41,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:01:41,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:01:41,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:01:41,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:01:41,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:01:41,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:01:41,504 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:01:41,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:01:41,504 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:01:41,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:01:41,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:01:41,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:01:41,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:01:41,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:01:41,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:01:41,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:01:41,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:01:41,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 05:01:41,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:01:41,506 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 05:01:41,506 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 05:01:41,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:01:41,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:01:41,507 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c [2021-11-03 05:01:41,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:01:41,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:01:41,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:01:41,727 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:01:41,728 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:01:41,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2021-11-03 05:01:41,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55f4e9e9c/29935406d4614757b2039acfe43ad1b7/FLAG654479b74 [2021-11-03 05:01:42,186 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:01:42,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2021-11-03 05:01:42,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55f4e9e9c/29935406d4614757b2039acfe43ad1b7/FLAG654479b74 [2021-11-03 05:01:42,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55f4e9e9c/29935406d4614757b2039acfe43ad1b7 [2021-11-03 05:01:42,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:01:42,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:01:42,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:01:42,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:01:42,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:01:42,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:01:42" (1/1) ... [2021-11-03 05:01:42,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@886a887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:42, skipping insertion in model container [2021-11-03 05:01:42,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:01:42" (1/1) ... [2021-11-03 05:01:42,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:01:42,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:01:42,929 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2021-11-03 05:01:42,941 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2021-11-03 05:01:43,016 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2021-11-03 05:01:43,017 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2021-11-03 05:01:43,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:01:43,038 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:01:43,057 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2021-11-03 05:01:43,059 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2021-11-03 05:01:43,101 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2021-11-03 05:01:43,102 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2021-11-03 05:01:43,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:01:43,174 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:01:43,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:43 WrapperNode [2021-11-03 05:01:43,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:01:43,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:01:43,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:01:43,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:01:43,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:43" (1/1) ... [2021-11-03 05:01:43,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:43" (1/1) ... [2021-11-03 05:01:43,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:01:43,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:01:43,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:01:43,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:01:43,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:43" (1/1) ... [2021-11-03 05:01:43,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:43" (1/1) ... [2021-11-03 05:01:43,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:43" (1/1) ... [2021-11-03 05:01:43,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:43" (1/1) ... [2021-11-03 05:01:43,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:43" (1/1) ... [2021-11-03 05:01:43,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:43" (1/1) ... [2021-11-03 05:01:43,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:43" (1/1) ... [2021-11-03 05:01:43,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:01:43,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:01:43,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:01:43,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:01:43,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:43" (1/1) ... [2021-11-03 05:01:43,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:01:43,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:01:43,425 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 05:01:43,447 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 05:01:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:01:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 05:01:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:01:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:01:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 05:01:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 05:01:43,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:01:43,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:01:43,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:01:43,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:01:43,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:01:44,084 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:01:44,084 INFO L299 CfgBuilder]: Removed 124 assume(true) statements. [2021-11-03 05:01:44,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:01:44 BoogieIcfgContainer [2021-11-03 05:01:44,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:01:44,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:01:44,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:01:44,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:01:44,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:01:42" (1/3) ... [2021-11-03 05:01:44,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c27520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:01:44, skipping insertion in model container [2021-11-03 05:01:44,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:43" (2/3) ... [2021-11-03 05:01:44,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c27520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:01:44, skipping insertion in model container [2021-11-03 05:01:44,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:01:44" (3/3) ... [2021-11-03 05:01:44,096 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-2.i [2021-11-03 05:01:44,102 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:01:44,103 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-03 05:01:44,140 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:01:44,144 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 05:01:44,145 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-03 05:01:44,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 261 states have (on average 1.6666666666666667) internal successors, (435), 275 states have internal predecessors, (435), 0 states have call successors, (0), 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 05:01:44,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 05:01:44,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:01:44,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:01:44,163 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:01:44,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:44,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1030621672, now seen corresponding path program 1 times [2021-11-03 05:01:44,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:01:44,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351224210] [2021-11-03 05:01:44,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:44,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:01:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:44,316 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 05:01:44,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:01:44,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351224210] [2021-11-03 05:01:44,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351224210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:01:44,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:01:44,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 05:01:44,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519511034] [2021-11-03 05:01:44,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:01:44,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:01:44,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:01:44,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:01:44,357 INFO L87 Difference]: Start difference. First operand has 276 states, 261 states have (on average 1.6666666666666667) internal successors, (435), 275 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:44,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:44,882 INFO L93 Difference]: Finished difference Result 544 states and 861 transitions. [2021-11-03 05:01:44,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:01:44,885 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 05:01:44,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:44,896 INFO L225 Difference]: With dead ends: 544 [2021-11-03 05:01:44,896 INFO L226 Difference]: Without dead ends: 266 [2021-11-03 05:01:44,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:01:44,905 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 380.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 470.16ms IncrementalHoareTripleChecker+Time [2021-11-03 05:01:44,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 339 Unknown, 0 Unchecked, 2.21ms Time], IncrementalHoareTripleChecker [0 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 470.16ms Time] [2021-11-03 05:01:44,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-03 05:01:44,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-11-03 05:01:44,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 253 states have (on average 1.3241106719367588) internal successors, (335), 265 states have internal predecessors, (335), 0 states have call successors, (0), 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 05:01:44,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 335 transitions. [2021-11-03 05:01:44,998 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 335 transitions. Word has length 8 [2021-11-03 05:01:44,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:44,998 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 335 transitions. [2021-11-03 05:01:44,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:44,999 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 335 transitions. [2021-11-03 05:01:44,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 05:01:45,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:01:45,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:01:45,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:01:45,001 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:01:45,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:45,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1260005844, now seen corresponding path program 1 times [2021-11-03 05:01:45,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:01:45,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743763169] [2021-11-03 05:01:45,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:45,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:01:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:45,106 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 05:01:45,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:01:45,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743763169] [2021-11-03 05:01:45,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743763169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:01:45,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:01:45,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:01:45,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051960983] [2021-11-03 05:01:45,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:01:45,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:01:45,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:01:45,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:01:45,116 INFO L87 Difference]: Start difference. First operand 266 states and 335 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:45,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:45,968 INFO L93 Difference]: Finished difference Result 589 states and 741 transitions. [2021-11-03 05:01:45,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:01:45,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-03 05:01:45,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:45,971 INFO L225 Difference]: With dead ends: 589 [2021-11-03 05:01:45,972 INFO L226 Difference]: Without dead ends: 440 [2021-11-03 05:01:45,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.54ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:01:45,973 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 206 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 653.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.49ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 798.03ms IncrementalHoareTripleChecker+Time [2021-11-03 05:01:45,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 0 Invalid, 1045 Unknown, 0 Unchecked, 6.49ms Time], IncrementalHoareTripleChecker [3 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 798.03ms Time] [2021-11-03 05:01:45,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-03 05:01:45,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 268. [2021-11-03 05:01:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 255 states have (on average 1.3215686274509804) internal successors, (337), 267 states have internal predecessors, (337), 0 states have call successors, (0), 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 05:01:45,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 337 transitions. [2021-11-03 05:01:45,987 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 337 transitions. Word has length 10 [2021-11-03 05:01:45,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:45,987 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 337 transitions. [2021-11-03 05:01:45,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:45,988 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 337 transitions. [2021-11-03 05:01:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 05:01:45,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:01:45,989 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 05:01:45,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:01:45,989 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:01:45,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:45,990 INFO L85 PathProgramCache]: Analyzing trace with hash -602340381, now seen corresponding path program 1 times [2021-11-03 05:01:45,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:01:45,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311243295] [2021-11-03 05:01:45,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:45,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:01:46,009 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:01:46,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289017202] [2021-11-03 05:01:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:46,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:01:46,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:01:46,012 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 05:01:46,045 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 05:01:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:46,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:01:46,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:46,280 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 05:01:46,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 05:01:46,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:01:46,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311243295] [2021-11-03 05:01:46,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:01:46,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289017202] [2021-11-03 05:01:46,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289017202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:01:46,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:01:46,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:01:46,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715291079] [2021-11-03 05:01:46,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:01:46,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:01:46,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:01:46,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:01:46,282 INFO L87 Difference]: Start difference. First operand 268 states and 337 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:46,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:46,747 INFO L93 Difference]: Finished difference Result 553 states and 701 transitions. [2021-11-03 05:01:46,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:01:46,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 05:01:46,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:46,749 INFO L225 Difference]: With dead ends: 553 [2021-11-03 05:01:46,749 INFO L226 Difference]: Without dead ends: 289 [2021-11-03 05:01:46,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.29ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:01:46,750 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 358.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.14ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 442.65ms IncrementalHoareTripleChecker+Time [2021-11-03 05:01:46,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 687 Unknown, 0 Unchecked, 2.14ms Time], IncrementalHoareTripleChecker [28 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 442.65ms Time] [2021-11-03 05:01:46,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-03 05:01:46,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 288. [2021-11-03 05:01:46,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 275 states have (on average 1.298181818181818) internal successors, (357), 287 states have internal predecessors, (357), 0 states have call successors, (0), 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 05:01:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 357 transitions. [2021-11-03 05:01:46,758 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 357 transitions. Word has length 44 [2021-11-03 05:01:46,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:46,759 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 357 transitions. [2021-11-03 05:01:46,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:46,759 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 357 transitions. [2021-11-03 05:01:46,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 05:01:46,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:01:46,761 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 05:01:46,782 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 05:01:46,962 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 05:01:46,962 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:01:46,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:46,963 INFO L85 PathProgramCache]: Analyzing trace with hash -821195099, now seen corresponding path program 1 times [2021-11-03 05:01:46,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:01:46,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841059190] [2021-11-03 05:01:46,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:46,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:01:46,976 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:01:46,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316849714] [2021-11-03 05:01:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:46,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:01:46,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:01:46,981 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 05:01:46,982 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 05:01:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:47,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:01:47,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:47,213 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 05:01:47,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 05:01:47,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:01:47,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841059190] [2021-11-03 05:01:47,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:01:47,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316849714] [2021-11-03 05:01:47,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316849714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:01:47,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:01:47,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:01:47,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907102640] [2021-11-03 05:01:47,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:01:47,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:01:47,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:01:47,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:01:47,222 INFO L87 Difference]: Start difference. First operand 288 states and 357 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 05:01:47,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:47,647 INFO L93 Difference]: Finished difference Result 565 states and 703 transitions. [2021-11-03 05:01:47,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:01:47,648 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 05:01:47,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:47,649 INFO L225 Difference]: With dead ends: 565 [2021-11-03 05:01:47,649 INFO L226 Difference]: Without dead ends: 281 [2021-11-03 05:01:47,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.67ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:01:47,650 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 323 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 342.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.74ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 399.55ms IncrementalHoareTripleChecker+Time [2021-11-03 05:01:47,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 0 Invalid, 695 Unknown, 0 Unchecked, 2.74ms Time], IncrementalHoareTripleChecker [24 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 399.55ms Time] [2021-11-03 05:01:47,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-11-03 05:01:47,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 274. [2021-11-03 05:01:47,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 261 states have (on average 1.2873563218390804) internal successors, (336), 273 states have internal predecessors, (336), 0 states have call successors, (0), 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 05:01:47,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 336 transitions. [2021-11-03 05:01:47,654 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 336 transitions. Word has length 44 [2021-11-03 05:01:47,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:47,654 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 336 transitions. [2021-11-03 05:01:47,655 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 05:01:47,655 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 336 transitions. [2021-11-03 05:01:47,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 05:01:47,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:01:47,655 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 05:01:47,687 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 05:01:47,859 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 05:01:47,859 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:01:47,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:47,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1704043945, now seen corresponding path program 1 times [2021-11-03 05:01:47,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:01:47,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601010224] [2021-11-03 05:01:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:47,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:01:47,872 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:01:47,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037912123] [2021-11-03 05:01:47,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:47,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:01:47,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:01:47,873 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 05:01:47,874 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 05:01:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:47,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:01:47,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:48,053 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 05:01:48,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 05:01:48,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:01:48,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601010224] [2021-11-03 05:01:48,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:01:48,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037912123] [2021-11-03 05:01:48,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037912123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:01:48,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:01:48,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:01:48,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126625087] [2021-11-03 05:01:48,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:01:48,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:01:48,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:01:48,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:01:48,059 INFO L87 Difference]: Start difference. First operand 274 states and 336 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 05:01:48,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:48,821 INFO L93 Difference]: Finished difference Result 485 states and 599 transitions. [2021-11-03 05:01:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:01:48,821 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 05:01:48,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:48,823 INFO L225 Difference]: With dead ends: 485 [2021-11-03 05:01:48,823 INFO L226 Difference]: Without dead ends: 483 [2021-11-03 05:01:48,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.32ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:01:48,823 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 263 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 616.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.97ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 724.19ms IncrementalHoareTripleChecker+Time [2021-11-03 05:01:48,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 0 Invalid, 1474 Unknown, 0 Unchecked, 3.97ms Time], IncrementalHoareTripleChecker [0 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 724.19ms Time] [2021-11-03 05:01:48,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-03 05:01:48,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 272. [2021-11-03 05:01:48,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 260 states have (on average 1.2846153846153847) internal successors, (334), 271 states have internal predecessors, (334), 0 states have call successors, (0), 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 05:01:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 334 transitions. [2021-11-03 05:01:48,836 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 334 transitions. Word has length 44 [2021-11-03 05:01:48,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:48,836 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 334 transitions. [2021-11-03 05:01:48,837 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 05:01:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 334 transitions. [2021-11-03 05:01:48,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 05:01:48,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:01:48,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:01:48,880 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 05:01:49,080 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 05:01:49,081 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:01:49,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:49,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1088553020, now seen corresponding path program 1 times [2021-11-03 05:01:49,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:01:49,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088006039] [2021-11-03 05:01:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:49,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:01:49,094 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:01:49,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740230805] [2021-11-03 05:01:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:49,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:01:49,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:01:49,095 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 05:01:49,096 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 05:01:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:49,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:01:49,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:49,371 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 05:01:49,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 05:01:49,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:01:49,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088006039] [2021-11-03 05:01:49,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:01:49,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740230805] [2021-11-03 05:01:49,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740230805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:01:49,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:01:49,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:01:49,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394141709] [2021-11-03 05:01:49,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:01:49,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:01:49,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:01:49,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:01:49,375 INFO L87 Difference]: Start difference. First operand 272 states and 334 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:49,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:49,789 INFO L93 Difference]: Finished difference Result 542 states and 668 transitions. [2021-11-03 05:01:49,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:01:49,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 05:01:49,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:49,791 INFO L225 Difference]: With dead ends: 542 [2021-11-03 05:01:49,791 INFO L226 Difference]: Without dead ends: 274 [2021-11-03 05:01:49,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:01:49,792 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 325.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.49ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 397.89ms IncrementalHoareTripleChecker+Time [2021-11-03 05:01:49,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 652 Unknown, 0 Unchecked, 1.49ms Time], IncrementalHoareTripleChecker [2 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 397.89ms Time] [2021-11-03 05:01:49,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-11-03 05:01:49,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-11-03 05:01:49,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 262 states have (on average 1.282442748091603) internal successors, (336), 273 states have internal predecessors, (336), 0 states have call successors, (0), 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 05:01:49,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 336 transitions. [2021-11-03 05:01:49,797 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 336 transitions. Word has length 51 [2021-11-03 05:01:49,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:49,797 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 336 transitions. [2021-11-03 05:01:49,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:49,797 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 336 transitions. [2021-11-03 05:01:49,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 05:01:49,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:01:49,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:01:49,818 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 05:01:50,011 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 05:01:50,012 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:01:50,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:50,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1219610036, now seen corresponding path program 1 times [2021-11-03 05:01:50,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:01:50,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611748001] [2021-11-03 05:01:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:50,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:01:50,023 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:01:50,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [294700931] [2021-11-03 05:01:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:50,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:01:50,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:01:50,025 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 05:01:50,026 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 05:01:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:50,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:01:50,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:50,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:01:50,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:01:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:01:50,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:01:50,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611748001] [2021-11-03 05:01:50,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:01:50,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294700931] [2021-11-03 05:01:50,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294700931] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:01:50,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:01:50,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-03 05:01:50,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009622018] [2021-11-03 05:01:50,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:01:50,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:01:50,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:01:50,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:01:50,325 INFO L87 Difference]: Start difference. First operand 274 states and 336 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 05:01:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:51,207 INFO L93 Difference]: Finished difference Result 550 states and 680 transitions. [2021-11-03 05:01:51,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:01:51,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 52 [2021-11-03 05:01:51,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:51,209 INFO L225 Difference]: With dead ends: 550 [2021-11-03 05:01:51,210 INFO L226 Difference]: Without dead ends: 280 [2021-11-03 05:01:51,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.20ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:01:51,211 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 698.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.40ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 844.83ms IncrementalHoareTripleChecker+Time [2021-11-03 05:01:51,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1632 Unknown, 0 Unchecked, 4.40ms Time], IncrementalHoareTripleChecker [10 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 844.83ms Time] [2021-11-03 05:01:51,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-03 05:01:51,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-11-03 05:01:51,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 268 states have (on average 1.2761194029850746) internal successors, (342), 279 states have internal predecessors, (342), 0 states have call successors, (0), 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 05:01:51,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 342 transitions. [2021-11-03 05:01:51,217 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 342 transitions. Word has length 52 [2021-11-03 05:01:51,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:51,217 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 342 transitions. [2021-11-03 05:01:51,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 05:01:51,217 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 342 transitions. [2021-11-03 05:01:51,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 05:01:51,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:01:51,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:01:51,259 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 05:01:51,436 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 05:01:51,437 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:01:51,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:51,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1193587178, now seen corresponding path program 1 times [2021-11-03 05:01:51,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:01:51,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051979247] [2021-11-03 05:01:51,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:51,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:01:51,448 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:01:51,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303002731] [2021-11-03 05:01:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:51,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:01:51,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:01:51,450 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 05:01:51,457 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 05:01:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:51,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:01:51,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:51,747 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 05:01:51,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 05:01:51,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:01:51,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051979247] [2021-11-03 05:01:51,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:01:51,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303002731] [2021-11-03 05:01:51,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303002731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:01:51,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:01:51,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:01:51,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299262222] [2021-11-03 05:01:51,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:01:51,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:01:51,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:01:51,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:01:51,750 INFO L87 Difference]: Start difference. First operand 280 states and 342 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:52,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:52,265 INFO L93 Difference]: Finished difference Result 730 states and 892 transitions. [2021-11-03 05:01:52,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:01:52,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-03 05:01:52,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:52,275 INFO L225 Difference]: With dead ends: 730 [2021-11-03 05:01:52,275 INFO L226 Difference]: Without dead ends: 454 [2021-11-03 05:01:52,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:01:52,278 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 186 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 395.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.68ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 491.51ms IncrementalHoareTripleChecker+Time [2021-11-03 05:01:52,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 0 Invalid, 739 Unknown, 0 Unchecked, 1.68ms Time], IncrementalHoareTripleChecker [8 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 491.51ms Time] [2021-11-03 05:01:52,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-11-03 05:01:52,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 397. [2021-11-03 05:01:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 385 states have (on average 1.2727272727272727) internal successors, (490), 396 states have internal predecessors, (490), 0 states have call successors, (0), 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 05:01:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 490 transitions. [2021-11-03 05:01:52,298 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 490 transitions. Word has length 54 [2021-11-03 05:01:52,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:52,298 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 490 transitions. [2021-11-03 05:01:52,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:52,299 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 490 transitions. [2021-11-03 05:01:52,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 05:01:52,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:01:52,301 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:52,329 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 05:01:52,518 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 05:01:52,519 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:01:52,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:52,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1721524676, now seen corresponding path program 2 times [2021-11-03 05:01:52,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:01:52,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670206126] [2021-11-03 05:01:52,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:52,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:01:52,530 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:01:52,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493646931] [2021-11-03 05:01:52,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:01:52,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:01:52,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:01:52,541 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 05:01:52,547 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 05:01:52,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-03 05:01:52,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:01:52,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:01:52,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:52,798 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 05:01:52,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 05:01:52,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:01:52,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670206126] [2021-11-03 05:01:52,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:01:52,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493646931] [2021-11-03 05:01:52,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493646931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:01:52,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:01:52,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:01:52,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486106056] [2021-11-03 05:01:52,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:01:52,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:01:52,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:01:52,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:01:52,801 INFO L87 Difference]: Start difference. First operand 397 states and 490 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 05:01:53,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:53,690 INFO L93 Difference]: Finished difference Result 1446 states and 1831 transitions. [2021-11-03 05:01:53,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:01:53,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 55 [2021-11-03 05:01:53,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:53,694 INFO L225 Difference]: With dead ends: 1446 [2021-11-03 05:01:53,694 INFO L226 Difference]: Without dead ends: 1098 [2021-11-03 05:01:53,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.94ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:01:53,695 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1000 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 674.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.79ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 839.03ms IncrementalHoareTripleChecker+Time [2021-11-03 05:01:53,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 0 Invalid, 1083 Unknown, 0 Unchecked, 4.79ms Time], IncrementalHoareTripleChecker [19 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 839.03ms Time] [2021-11-03 05:01:53,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2021-11-03 05:01:53,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 393. [2021-11-03 05:01:53,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 383 states have (on average 1.2637075718015667) internal successors, (484), 392 states have internal predecessors, (484), 0 states have call successors, (0), 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 05:01:53,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 484 transitions. [2021-11-03 05:01:53,718 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 484 transitions. Word has length 55 [2021-11-03 05:01:53,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:53,719 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 484 transitions. [2021-11-03 05:01:53,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 05:01:53,719 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 484 transitions. [2021-11-03 05:01:53,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 05:01:53,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:01:53,720 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] [2021-11-03 05:01:53,753 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 05:01:53,953 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 05:01:53,954 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:01:53,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:53,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1752963266, now seen corresponding path program 1 times [2021-11-03 05:01:53,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:01:53,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457153575] [2021-11-03 05:01:53,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:53,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:01:53,983 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:01:53,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943316000] [2021-11-03 05:01:53,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:53,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:01:53,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:01:53,996 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 05:01:53,997 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 05:01:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:54,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:01:54,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:54,290 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 05:01:54,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:01:54,455 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 05:01:54,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:01:54,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457153575] [2021-11-03 05:01:54,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:01:54,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943316000] [2021-11-03 05:01:54,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943316000] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:01:54,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:01:54,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-03 05:01:54,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967142485] [2021-11-03 05:01:54,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:01:54,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:01:54,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:01:54,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:01:54,458 INFO L87 Difference]: Start difference. First operand 393 states and 484 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 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 05:01:55,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:55,711 INFO L93 Difference]: Finished difference Result 746 states and 934 transitions. [2021-11-03 05:01:55,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:01:55,712 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 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 86 [2021-11-03 05:01:55,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:55,713 INFO L225 Difference]: With dead ends: 746 [2021-11-03 05:01:55,713 INFO L226 Difference]: Without dead ends: 405 [2021-11-03 05:01:55,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.84ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:01:55,714 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2163 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 994.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.51ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1219.03ms IncrementalHoareTripleChecker+Time [2021-11-03 05:01:55,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2562 Unknown, 0 Unchecked, 5.51ms Time], IncrementalHoareTripleChecker [26 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 1219.03ms Time] [2021-11-03 05:01:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-11-03 05:01:55,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2021-11-03 05:01:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 395 states have (on average 1.2556962025316456) internal successors, (496), 404 states have internal predecessors, (496), 0 states have call successors, (0), 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 05:01:55,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 496 transitions. [2021-11-03 05:01:55,726 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 496 transitions. Word has length 86 [2021-11-03 05:01:55,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:55,726 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 496 transitions. [2021-11-03 05:01:55,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 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 05:01:55,727 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 496 transitions. [2021-11-03 05:01:55,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 05:01:55,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:01:55,728 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] [2021-11-03 05:01:55,751 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 05:01:55,944 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 05:01:55,944 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:01:55,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:55,945 INFO L85 PathProgramCache]: Analyzing trace with hash 698317022, now seen corresponding path program 2 times [2021-11-03 05:01:55,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:01:55,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386494259] [2021-11-03 05:01:55,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:55,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:01:55,956 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:01:55,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931062962] [2021-11-03 05:01:55,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:01:55,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:01:55,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:01:55,959 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 05:01:55,960 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 05:01:56,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-03 05:01:56,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:01:56,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:01:56,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:56,210 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 05:01:56,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-03 05:01:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-03 05:01:56,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 05:01:56,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:01:56,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386494259] [2021-11-03 05:01:56,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:01:56,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931062962] [2021-11-03 05:01:56,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931062962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:01:56,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:01:56,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:01:56,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923508644] [2021-11-03 05:01:56,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:01:56,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:01:56,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:01:56,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:01:56,227 INFO L87 Difference]: Start difference. First operand 405 states and 496 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 05:01:56,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:56,818 INFO L93 Difference]: Finished difference Result 555 states and 686 transitions. [2021-11-03 05:01:56,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:01:56,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 98 [2021-11-03 05:01:56,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:56,820 INFO L225 Difference]: With dead ends: 555 [2021-11-03 05:01:56,820 INFO L226 Difference]: Without dead ends: 500 [2021-11-03 05:01:56,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.21ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:01:56,821 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 147 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 476.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.96ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 570.39ms IncrementalHoareTripleChecker+Time [2021-11-03 05:01:56,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 0 Invalid, 969 Unknown, 0 Unchecked, 1.96ms Time], IncrementalHoareTripleChecker [3 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 570.39ms Time] [2021-11-03 05:01:56,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-03 05:01:56,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 407. [2021-11-03 05:01:56,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 397 states have (on average 1.2544080604534005) internal successors, (498), 406 states have internal predecessors, (498), 0 states have call successors, (0), 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 05:01:56,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 498 transitions. [2021-11-03 05:01:56,834 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 498 transitions. Word has length 98 [2021-11-03 05:01:56,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:56,835 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 498 transitions. [2021-11-03 05:01:56,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 05:01:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 498 transitions. [2021-11-03 05:01:56,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 05:01:56,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:01:56,836 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:56,856 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 05:01:57,051 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 05:01:57,052 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:01:57,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:57,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1686629350, now seen corresponding path program 1 times [2021-11-03 05:01:57,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:01:57,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767919592] [2021-11-03 05:01:57,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:57,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:01:57,068 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:01:57,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107894856] [2021-11-03 05:01:57,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:57,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:01:57,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:01:57,092 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 05:01:57,118 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 05:01:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:57,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 05:01:57,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:57,563 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-03 05:01:57,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:01:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-03 05:01:57,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:01:57,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767919592] [2021-11-03 05:01:57,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:01:57,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107894856] [2021-11-03 05:01:57,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107894856] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:01:57,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:01:57,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-03 05:01:57,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546306219] [2021-11-03 05:01:57,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-03 05:01:57,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:01:57,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-03 05:01:57,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-03 05:01:57,905 INFO L87 Difference]: Start difference. First operand 407 states and 498 transitions. Second operand has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 24 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:58,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:58,450 INFO L93 Difference]: Finished difference Result 786 states and 986 transitions. [2021-11-03 05:01:58,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 05:01:58,450 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 24 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-03 05:01:58,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:58,452 INFO L225 Difference]: With dead ends: 786 [2021-11-03 05:01:58,452 INFO L226 Difference]: Without dead ends: 431 [2021-11-03 05:01:58,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 288.02ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-03 05:01:58,453 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 431.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.56ms SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 522.12ms IncrementalHoareTripleChecker+Time [2021-11-03 05:01:58,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1088 Unknown, 0 Unchecked, 1.56ms Time], IncrementalHoareTripleChecker [98 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 522.12ms Time] [2021-11-03 05:01:58,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-03 05:01:58,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2021-11-03 05:01:58,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 421 states have (on average 1.2399049881235154) internal successors, (522), 430 states have internal predecessors, (522), 0 states have call successors, (0), 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 05:01:58,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 522 transitions. [2021-11-03 05:01:58,462 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 522 transitions. Word has length 100 [2021-11-03 05:01:58,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:58,462 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 522 transitions. [2021-11-03 05:01:58,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 24 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:58,463 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 522 transitions. [2021-11-03 05:01:58,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-03 05:01:58,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:01:58,464 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:58,497 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 05:01:58,682 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 05:01:58,682 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:01:58,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:58,683 INFO L85 PathProgramCache]: Analyzing trace with hash 190945062, now seen corresponding path program 2 times [2021-11-03 05:01:58,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:01:58,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741534220] [2021-11-03 05:01:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:58,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:01:58,695 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:01:58,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561816766] [2021-11-03 05:01:58,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:01:58,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:01:58,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:01:58,696 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 05:01:58,698 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 05:01:58,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-03 05:01:58,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:01:58,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:01:58,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-11-03 05:01:58,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 05:01:58,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:01:58,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741534220] [2021-11-03 05:01:58,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:01:58,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561816766] [2021-11-03 05:01:58,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561816766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:01:58,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:01:58,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:01:58,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32471101] [2021-11-03 05:01:58,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:01:58,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:01:58,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:01:58,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:01:58,989 INFO L87 Difference]: Start difference. First operand 431 states and 522 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 05:01:59,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:59,642 INFO L93 Difference]: Finished difference Result 838 states and 1015 transitions. [2021-11-03 05:01:59,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:01:59,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 05:01:59,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:59,644 INFO L225 Difference]: With dead ends: 838 [2021-11-03 05:01:59,644 INFO L226 Difference]: Without dead ends: 459 [2021-11-03 05:01:59,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.25ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:01:59,645 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 480.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 624.37ms IncrementalHoareTripleChecker+Time [2021-11-03 05:01:59,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 950 Unknown, 0 Unchecked, 2.13ms Time], IncrementalHoareTripleChecker [0 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 624.37ms Time] [2021-11-03 05:01:59,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-11-03 05:01:59,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 431. [2021-11-03 05:01:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 421 states have (on average 1.2375296912114013) internal successors, (521), 430 states have internal predecessors, (521), 0 states have call successors, (0), 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 05:01:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 521 transitions. [2021-11-03 05:01:59,658 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 521 transitions. Word has length 124 [2021-11-03 05:01:59,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:59,658 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 521 transitions. [2021-11-03 05:01:59,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 05:01:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 521 transitions. [2021-11-03 05:01:59,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-03 05:01:59,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:01:59,660 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:59,701 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 05:01:59,881 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 05:01:59,882 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:01:59,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:59,883 INFO L85 PathProgramCache]: Analyzing trace with hash 548596580, now seen corresponding path program 1 times [2021-11-03 05:01:59,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:01:59,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758930613] [2021-11-03 05:01:59,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:59,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:01:59,897 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:01:59,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [972240162] [2021-11-03 05:01:59,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:59,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:01:59,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:01:59,898 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 05:01:59,900 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 05:02:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:00,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-03 05:02:00,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-03 05:02:00,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-03 05:02:01,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:02:01,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758930613] [2021-11-03 05:02:01,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:02:01,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972240162] [2021-11-03 05:02:01,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972240162] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:02:01,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:02:01,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-03 05:02:01,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120752419] [2021-11-03 05:02:01,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-03 05:02:01,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:02:01,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-03 05:02:01,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 05:02:01,307 INFO L87 Difference]: Start difference. First operand 431 states and 521 transitions. Second operand has 48 states, 48 states have (on average 2.6666666666666665) internal successors, (128), 48 states have internal predecessors, (128), 0 states have call successors, (0), 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 05:02:02,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:02:02,773 INFO L93 Difference]: Finished difference Result 854 states and 1073 transitions. [2021-11-03 05:02:02,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-03 05:02:02,776 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.6666666666666665) internal successors, (128), 48 states have internal predecessors, (128), 0 states have call successors, (0), 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 125 [2021-11-03 05:02:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:02:02,777 INFO L225 Difference]: With dead ends: 854 [2021-11-03 05:02:02,777 INFO L226 Difference]: Without dead ends: 475 [2021-11-03 05:02:02,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 764.28ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 05:02:02,779 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1059.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.00ms SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1395.91ms IncrementalHoareTripleChecker+Time [2021-11-03 05:02:02,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2467 Unknown, 0 Unchecked, 6.00ms Time], IncrementalHoareTripleChecker [173 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 1395.91ms Time] [2021-11-03 05:02:02,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2021-11-03 05:02:02,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2021-11-03 05:02:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 465 states have (on average 1.2150537634408602) internal successors, (565), 474 states have internal predecessors, (565), 0 states have call successors, (0), 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 05:02:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 565 transitions. [2021-11-03 05:02:02,789 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 565 transitions. Word has length 125 [2021-11-03 05:02:02,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:02:02,789 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 565 transitions. [2021-11-03 05:02:02,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.6666666666666665) internal successors, (128), 48 states have internal predecessors, (128), 0 states have call successors, (0), 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 05:02:02,790 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 565 transitions. [2021-11-03 05:02:02,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-03 05:02:02,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:02:02,791 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:02,810 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 05:02:03,004 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 05:02:03,005 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:02:03,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:02:03,005 INFO L85 PathProgramCache]: Analyzing trace with hash -440527100, now seen corresponding path program 2 times [2021-11-03 05:02:03,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:02:03,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429819594] [2021-11-03 05:02:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:03,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:02:03,017 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:02:03,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896751399] [2021-11-03 05:02:03,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:02:03,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:02:03,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:02:03,019 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 05:02:03,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Killed by 15