./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9bf0bad0cbe69b5d3c479fc9571d5ea3a755c149f856a4942bf9e49854dfec3 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 16:38:37,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 16:38:37,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 16:38:37,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 16:38:37,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 16:38:37,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 16:38:37,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 16:38:37,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 16:38:37,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 16:38:37,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 16:38:37,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 16:38:37,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 16:38:37,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 16:38:37,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 16:38:37,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 16:38:37,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 16:38:37,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 16:38:37,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 16:38:37,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 16:38:37,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 16:38:37,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 16:38:37,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 16:38:37,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 16:38:37,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 16:38:37,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 16:38:37,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 16:38:37,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 16:38:37,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 16:38:37,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 16:38:37,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 16:38:37,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 16:38:37,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 16:38:37,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 16:38:37,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 16:38:37,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 16:38:37,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 16:38:37,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 16:38:37,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 16:38:37,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 16:38:37,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 16:38:37,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 16:38:37,713 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-04 16:38:37,730 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 16:38:37,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 16:38:37,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 16:38:37,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 16:38:37,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 16:38:37,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 16:38:37,731 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 16:38:37,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 16:38:37,732 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-04 16:38:37,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 16:38:37,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-04 16:38:37,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 16:38:37,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 16:38:37,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 16:38:37,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 16:38:37,733 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-04 16:38:37,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 16:38:37,733 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 16:38:37,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 16:38:37,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 16:38:37,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 16:38:37,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 16:38:37,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 16:38:37,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 16:38:37,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 16:38:37,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 16:38:37,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 16:38:37,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 16:38:37,735 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 16:38:37,735 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 16:38:37,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 16:38:37,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 16:38:37,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9bf0bad0cbe69b5d3c479fc9571d5ea3a755c149f856a4942bf9e49854dfec3 [2021-11-04 16:38:37,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 16:38:37,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 16:38:37,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 16:38:37,934 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 16:38:37,937 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 16:38:37,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2021-11-04 16:38:37,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61bbe4b89/dc9a92579810466fa690c0a6a09b878a/FLAGad5f5112e [2021-11-04 16:38:38,451 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 16:38:38,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2021-11-04 16:38:38,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61bbe4b89/dc9a92579810466fa690c0a6a09b878a/FLAGad5f5112e [2021-11-04 16:38:38,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61bbe4b89/dc9a92579810466fa690c0a6a09b878a [2021-11-04 16:38:38,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 16:38:38,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 16:38:38,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 16:38:38,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 16:38:38,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 16:38:38,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:38:38" (1/1) ... [2021-11-04 16:38:38,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5e6528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:38:38, skipping insertion in model container [2021-11-04 16:38:38,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:38:38" (1/1) ... [2021-11-04 16:38:38,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 16:38:39,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 16:38:39,275 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2021-11-04 16:38:39,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 16:38:39,386 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 16:38:39,407 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2021-11-04 16:38:39,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 16:38:39,517 INFO L208 MainTranslator]: Completed translation [2021-11-04 16:38:39,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:38:39 WrapperNode [2021-11-04 16:38:39,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 16:38:39,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 16:38:39,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 16:38:39,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 16:38:39,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:38:39" (1/1) ... [2021-11-04 16:38:39,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:38:39" (1/1) ... [2021-11-04 16:38:39,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 16:38:39,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 16:38:39,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 16:38:39,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 16:38:39,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:38:39" (1/1) ... [2021-11-04 16:38:39,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:38:39" (1/1) ... [2021-11-04 16:38:39,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:38:39" (1/1) ... [2021-11-04 16:38:39,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:38:39" (1/1) ... [2021-11-04 16:38:39,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:38:39" (1/1) ... [2021-11-04 16:38:39,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:38:39" (1/1) ... [2021-11-04 16:38:39,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:38:39" (1/1) ... [2021-11-04 16:38:39,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 16:38:39,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 16:38:39,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 16:38:39,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 16:38:39,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:38:39" (1/1) ... [2021-11-04 16:38:39,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 16:38:39,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:38:39,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 16:38:39,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 16:38:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 16:38:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 16:38:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 16:38:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 16:38:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 16:38:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 16:38:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 16:38:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 16:38:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 16:38:39,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 16:38:40,349 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 16:38:40,350 INFO L299 CfgBuilder]: Removed 98 assume(true) statements. [2021-11-04 16:38:40,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:38:40 BoogieIcfgContainer [2021-11-04 16:38:40,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 16:38:40,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 16:38:40,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 16:38:40,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 16:38:40,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 04:38:38" (1/3) ... [2021-11-04 16:38:40,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527616f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:38:40, skipping insertion in model container [2021-11-04 16:38:40,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:38:39" (2/3) ... [2021-11-04 16:38:40,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527616f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:38:40, skipping insertion in model container [2021-11-04 16:38:40,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:38:40" (3/3) ... [2021-11-04 16:38:40,364 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-1.i [2021-11-04 16:38:40,372 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 16:38:40,372 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-04 16:38:40,427 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 16:38:40,437 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 16:38:40,437 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-04 16:38:40,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 210 states have (on average 1.7285714285714286) internal successors, (363), 220 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:40,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-04 16:38:40,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:38:40,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:38:40,467 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:38:40,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:38:40,471 INFO L85 PathProgramCache]: Analyzing trace with hash 889550569, now seen corresponding path program 1 times [2021-11-04 16:38:40,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:38:40,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367675706] [2021-11-04 16:38:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:40,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:38:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:38:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:38:40,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:38:40,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367675706] [2021-11-04 16:38:40,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367675706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:38:40,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:38:40,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 16:38:40,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066588769] [2021-11-04 16:38:40,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:38:40,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 16:38:40,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:38:40,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 16:38:40,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 16:38:40,629 INFO L87 Difference]: Start difference. First operand has 221 states, 210 states have (on average 1.7285714285714286) internal successors, (363), 220 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:41,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:38:41,113 INFO L93 Difference]: Finished difference Result 440 states and 724 transitions. [2021-11-04 16:38:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 16:38:41,116 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-04 16:38:41,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:38:41,123 INFO L225 Difference]: With dead ends: 440 [2021-11-04 16:38:41,123 INFO L226 Difference]: Without dead ends: 217 [2021-11-04 16:38:41,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 16:38:41,128 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 349.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 441.61ms IncrementalHoareTripleChecker+Time [2021-11-04 16:38:41,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 286 Unknown, 0 Unchecked, 1.86ms Time], IncrementalHoareTripleChecker [0 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 441.61ms Time] [2021-11-04 16:38:41,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-04 16:38:41,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-04 16:38:41,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 207 states have (on average 1.3623188405797102) internal successors, (282), 216 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:41,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 282 transitions. [2021-11-04 16:38:41,167 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 282 transitions. Word has length 8 [2021-11-04 16:38:41,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:38:41,168 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 282 transitions. [2021-11-04 16:38:41,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:41,168 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 282 transitions. [2021-11-04 16:38:41,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-04 16:38:41,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:38:41,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:38:41,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 16:38:41,170 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:38:41,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:38:41,171 INFO L85 PathProgramCache]: Analyzing trace with hash 921152950, now seen corresponding path program 1 times [2021-11-04 16:38:41,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:38:41,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000590745] [2021-11-04 16:38:41,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:41,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:38:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:38:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:38:41,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:38:41,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000590745] [2021-11-04 16:38:41,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000590745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:38:41,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:38:41,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:38:41,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410510567] [2021-11-04 16:38:41,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:38:41,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:38:41,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:38:41,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:38:41,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:38:41,240 INFO L87 Difference]: Start difference. First operand 217 states and 282 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:38:41,974 INFO L93 Difference]: Finished difference Result 432 states and 562 transitions. [2021-11-04 16:38:41,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:38:41,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-04 16:38:41,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:38:41,976 INFO L225 Difference]: With dead ends: 432 [2021-11-04 16:38:41,976 INFO L226 Difference]: Without dead ends: 387 [2021-11-04 16:38:41,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:38:41,978 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 223 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 594.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 710.42ms IncrementalHoareTripleChecker+Time [2021-11-04 16:38:41,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 0 Invalid, 563 Unknown, 0 Unchecked, 3.51ms Time], IncrementalHoareTripleChecker [0 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 710.42ms Time] [2021-11-04 16:38:41,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-04 16:38:41,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 218. [2021-11-04 16:38:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 208 states have (on average 1.3605769230769231) internal successors, (283), 217 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 283 transitions. [2021-11-04 16:38:41,987 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 283 transitions. Word has length 8 [2021-11-04 16:38:41,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:38:41,988 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 283 transitions. [2021-11-04 16:38:41,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:41,988 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 283 transitions. [2021-11-04 16:38:41,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 16:38:41,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:38:41,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:38:41,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 16:38:41,991 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:38:41,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:38:41,992 INFO L85 PathProgramCache]: Analyzing trace with hash -137963571, now seen corresponding path program 1 times [2021-11-04 16:38:41,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:38:41,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299101817] [2021-11-04 16:38:41,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:41,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:38:42,006 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:38:42,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240778208] [2021-11-04 16:38:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:42,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:42,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:38:42,008 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:38:42,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 16:38:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:38:42,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:38:42,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:38:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:38:42,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:38:42,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:38:42,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299101817] [2021-11-04 16:38:42,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:38:42,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240778208] [2021-11-04 16:38:42,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240778208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:38:42,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:38:42,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:38:42,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498511934] [2021-11-04 16:38:42,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:38:42,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:38:42,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:38:42,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:38:42,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:38:42,391 INFO L87 Difference]: Start difference. First operand 218 states and 283 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:42,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:38:42,951 INFO L93 Difference]: Finished difference Result 454 states and 594 transitions. [2021-11-04 16:38:42,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:38:42,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-04 16:38:42,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:38:42,953 INFO L225 Difference]: With dead ends: 454 [2021-11-04 16:38:42,953 INFO L226 Difference]: Without dead ends: 239 [2021-11-04 16:38:42,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:38:42,955 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 466.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.09ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 542.49ms IncrementalHoareTripleChecker+Time [2021-11-04 16:38:42,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 581 Unknown, 0 Unchecked, 2.09ms Time], IncrementalHoareTripleChecker [28 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 542.49ms Time] [2021-11-04 16:38:42,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-04 16:38:42,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-11-04 16:38:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 228 states have (on average 1.3289473684210527) internal successors, (303), 237 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:42,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 303 transitions. [2021-11-04 16:38:42,961 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 303 transitions. Word has length 106 [2021-11-04 16:38:42,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:38:42,975 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 303 transitions. [2021-11-04 16:38:42,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:42,976 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 303 transitions. [2021-11-04 16:38:42,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 16:38:42,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:38:42,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:38:43,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 16:38:43,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:43,200 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:38:43,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:38:43,200 INFO L85 PathProgramCache]: Analyzing trace with hash 62310097, now seen corresponding path program 1 times [2021-11-04 16:38:43,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:38:43,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034945421] [2021-11-04 16:38:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:43,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:38:43,212 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:38:43,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034500802] [2021-11-04 16:38:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:43,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:43,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:38:43,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:38:43,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 16:38:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:38:43,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:38:43,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:38:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:38:43,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:38:43,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:38:43,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034945421] [2021-11-04 16:38:43,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:38:43,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034500802] [2021-11-04 16:38:43,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034500802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:38:43,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:38:43,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:38:43,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317246218] [2021-11-04 16:38:43,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:38:43,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:38:43,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:38:43,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:38:43,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:38:43,515 INFO L87 Difference]: Start difference. First operand 238 states and 303 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:38:44,046 INFO L93 Difference]: Finished difference Result 494 states and 634 transitions. [2021-11-04 16:38:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:38:44,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-04 16:38:44,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:38:44,048 INFO L225 Difference]: With dead ends: 494 [2021-11-04 16:38:44,048 INFO L226 Difference]: Without dead ends: 259 [2021-11-04 16:38:44,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.29ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:38:44,051 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 423.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.79ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 510.41ms IncrementalHoareTripleChecker+Time [2021-11-04 16:38:44,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 581 Unknown, 0 Unchecked, 1.79ms Time], IncrementalHoareTripleChecker [28 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 510.41ms Time] [2021-11-04 16:38:44,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-04 16:38:44,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2021-11-04 16:38:44,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 248 states have (on average 1.3024193548387097) internal successors, (323), 257 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:44,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 323 transitions. [2021-11-04 16:38:44,063 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 323 transitions. Word has length 106 [2021-11-04 16:38:44,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:38:44,064 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 323 transitions. [2021-11-04 16:38:44,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:44,065 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 323 transitions. [2021-11-04 16:38:44,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 16:38:44,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:38:44,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:38:44,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 16:38:44,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-04 16:38:44,289 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:38:44,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:38:44,289 INFO L85 PathProgramCache]: Analyzing trace with hash -426500019, now seen corresponding path program 1 times [2021-11-04 16:38:44,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:38:44,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021815741] [2021-11-04 16:38:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:44,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:38:44,302 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:38:44,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645220194] [2021-11-04 16:38:44,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:44,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:44,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:38:44,304 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:38:44,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 16:38:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:38:44,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:38:44,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:38:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:38:44,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:38:44,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:38:44,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021815741] [2021-11-04 16:38:44,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:38:44,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645220194] [2021-11-04 16:38:44,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645220194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:38:44,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:38:44,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:38:44,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55473532] [2021-11-04 16:38:44,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:38:44,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:38:44,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:38:44,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:38:44,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:38:44,592 INFO L87 Difference]: Start difference. First operand 258 states and 323 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:38:45,121 INFO L93 Difference]: Finished difference Result 505 states and 635 transitions. [2021-11-04 16:38:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:38:45,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-04 16:38:45,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:38:45,122 INFO L225 Difference]: With dead ends: 505 [2021-11-04 16:38:45,123 INFO L226 Difference]: Without dead ends: 250 [2021-11-04 16:38:45,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.72ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:38:45,124 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 270 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 434.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.70ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 512.29ms IncrementalHoareTripleChecker+Time [2021-11-04 16:38:45,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 0 Invalid, 583 Unknown, 0 Unchecked, 1.70ms Time], IncrementalHoareTripleChecker [24 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 512.29ms Time] [2021-11-04 16:38:45,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-04 16:38:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2021-11-04 16:38:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 234 states have (on average 1.2905982905982907) internal successors, (302), 243 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 302 transitions. [2021-11-04 16:38:45,128 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 302 transitions. Word has length 106 [2021-11-04 16:38:45,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:38:45,128 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 302 transitions. [2021-11-04 16:38:45,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:45,129 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 302 transitions. [2021-11-04 16:38:45,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 16:38:45,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:38:45,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:38:45,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-04 16:38:45,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:45,349 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:38:45,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:38:45,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1791075329, now seen corresponding path program 1 times [2021-11-04 16:38:45,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:38:45,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577305607] [2021-11-04 16:38:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:45,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:38:45,360 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:38:45,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886182417] [2021-11-04 16:38:45,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:45,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:45,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:38:45,361 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:38:45,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 16:38:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:38:45,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:38:45,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:38:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:38:45,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:38:45,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:38:45,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577305607] [2021-11-04 16:38:45,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:38:45,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886182417] [2021-11-04 16:38:45,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886182417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:38:45,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:38:45,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:38:45,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867193564] [2021-11-04 16:38:45,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:38:45,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:38:45,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:38:45,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:38:45,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:38:45,616 INFO L87 Difference]: Start difference. First operand 244 states and 302 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:47,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:38:47,272 INFO L93 Difference]: Finished difference Result 566 states and 702 transitions. [2021-11-04 16:38:47,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:38:47,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-04 16:38:47,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:38:47,274 INFO L225 Difference]: With dead ends: 566 [2021-11-04 16:38:47,274 INFO L226 Difference]: Without dead ends: 325 [2021-11-04 16:38:47,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:38:47,275 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 263 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1509.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1636.36ms IncrementalHoareTripleChecker+Time [2021-11-04 16:38:47,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 0 Invalid, 878 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [24 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 1636.36ms Time] [2021-11-04 16:38:47,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-04 16:38:47,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 230. [2021-11-04 16:38:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 220 states have (on average 1.2772727272727273) internal successors, (281), 229 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:47,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 281 transitions. [2021-11-04 16:38:47,279 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 281 transitions. Word has length 106 [2021-11-04 16:38:47,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:38:47,280 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 281 transitions. [2021-11-04 16:38:47,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:47,280 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 281 transitions. [2021-11-04 16:38:47,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 16:38:47,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:38:47,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:38:47,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-04 16:38:47,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:47,495 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:38:47,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:38:47,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1369189005, now seen corresponding path program 1 times [2021-11-04 16:38:47,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:38:47,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812113944] [2021-11-04 16:38:47,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:47,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:38:47,522 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:38:47,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904062522] [2021-11-04 16:38:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:47,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:47,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:38:47,523 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:38:47,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-04 16:38:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:38:47,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:38:47,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:38:47,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:38:47,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:38:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:38:48,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:38:48,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812113944] [2021-11-04 16:38:48,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:38:48,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904062522] [2021-11-04 16:38:48,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904062522] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:38:48,039 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:38:48,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-04 16:38:48,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670834897] [2021-11-04 16:38:48,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:38:48,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 16:38:48,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:38:48,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 16:38:48,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 16:38:48,043 INFO L87 Difference]: Start difference. First operand 230 states and 281 transitions. Second operand has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:49,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:38:49,252 INFO L93 Difference]: Finished difference Result 821 states and 1005 transitions. [2021-11-04 16:38:49,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 16:38:49,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-04 16:38:49,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:38:49,257 INFO L225 Difference]: With dead ends: 821 [2021-11-04 16:38:49,257 INFO L226 Difference]: Without dead ends: 776 [2021-11-04 16:38:49,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.98ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 16:38:49,258 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 948 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 985.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.41ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1172.54ms IncrementalHoareTripleChecker+Time [2021-11-04 16:38:49,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 0 Invalid, 1074 Unknown, 0 Unchecked, 4.41ms Time], IncrementalHoareTripleChecker [4 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 1172.54ms Time] [2021-11-04 16:38:49,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-11-04 16:38:49,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 776. [2021-11-04 16:38:49,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 766 states have (on average 1.2362924281984333) internal successors, (947), 775 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:49,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 947 transitions. [2021-11-04 16:38:49,272 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 947 transitions. Word has length 106 [2021-11-04 16:38:49,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:38:49,272 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 947 transitions. [2021-11-04 16:38:49,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:49,273 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 947 transitions. [2021-11-04 16:38:49,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2021-11-04 16:38:49,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:38:49,276 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:38:49,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-04 16:38:49,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:49,494 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:38:49,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:38:49,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1181109906, now seen corresponding path program 2 times [2021-11-04 16:38:49,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:38:49,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783980553] [2021-11-04 16:38:49,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:49,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:38:49,514 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:38:49,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834013002] [2021-11-04 16:38:49,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 16:38:49,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:49,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:38:49,516 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:38:49,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-04 16:38:49,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-04 16:38:49,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:38:49,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-04 16:38:49,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:38:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2021-11-04 16:38:51,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:38:51,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:38:51,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783980553] [2021-11-04 16:38:51,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:38:51,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834013002] [2021-11-04 16:38:51,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834013002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:38:51,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:38:51,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:38:51,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720737292] [2021-11-04 16:38:51,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:38:51,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:38:51,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:38:51,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:38:51,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:38:51,029 INFO L87 Difference]: Start difference. First operand 776 states and 947 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:51,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:38:51,736 INFO L93 Difference]: Finished difference Result 1405 states and 1719 transitions. [2021-11-04 16:38:51,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:38:51,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 400 [2021-11-04 16:38:51,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:38:51,739 INFO L225 Difference]: With dead ends: 1405 [2021-11-04 16:38:51,739 INFO L226 Difference]: Without dead ends: 774 [2021-11-04 16:38:51,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.28ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:38:51,740 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 75 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 573.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.51ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 687.49ms IncrementalHoareTripleChecker+Time [2021-11-04 16:38:51,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 0 Invalid, 794 Unknown, 0 Unchecked, 1.51ms Time], IncrementalHoareTripleChecker [2 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 687.49ms Time] [2021-11-04 16:38:51,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-04 16:38:51,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2021-11-04 16:38:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 764 states have (on average 1.2356020942408377) internal successors, (944), 773 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:51,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 944 transitions. [2021-11-04 16:38:51,753 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 944 transitions. Word has length 400 [2021-11-04 16:38:51,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:38:51,753 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 944 transitions. [2021-11-04 16:38:51,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:51,754 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 944 transitions. [2021-11-04 16:38:51,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-04 16:38:51,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:38:51,757 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:38:51,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-04 16:38:51,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:51,967 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:38:51,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:38:51,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1217332562, now seen corresponding path program 1 times [2021-11-04 16:38:51,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:38:51,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290431273] [2021-11-04 16:38:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:51,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:38:51,987 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:38:51,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746767286] [2021-11-04 16:38:51,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:51,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:51,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:38:51,989 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:38:51,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-04 16:38:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:38:52,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:38:52,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:38:52,713 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-11-04 16:38:52,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:38:52,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:38:52,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290431273] [2021-11-04 16:38:52,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:38:52,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746767286] [2021-11-04 16:38:52,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746767286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:38:52,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:38:52,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:38:52,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50801977] [2021-11-04 16:38:52,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:38:52,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:38:52,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:38:52,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:38:52,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:38:52,715 INFO L87 Difference]: Start difference. First operand 774 states and 944 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:53,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:38:53,237 INFO L93 Difference]: Finished difference Result 1512 states and 1861 transitions. [2021-11-04 16:38:53,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:38:53,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 407 [2021-11-04 16:38:53,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:38:53,240 INFO L225 Difference]: With dead ends: 1512 [2021-11-04 16:38:53,240 INFO L226 Difference]: Without dead ends: 790 [2021-11-04 16:38:53,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:38:53,241 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 410.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.88ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 505.98ms IncrementalHoareTripleChecker+Time [2021-11-04 16:38:53,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 538 Unknown, 0 Unchecked, 0.88ms Time], IncrementalHoareTripleChecker [6 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 505.98ms Time] [2021-11-04 16:38:53,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-11-04 16:38:53,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 790. [2021-11-04 16:38:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 780 states have (on average 1.2307692307692308) internal successors, (960), 789 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:53,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 960 transitions. [2021-11-04 16:38:53,255 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 960 transitions. Word has length 407 [2021-11-04 16:38:53,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:38:53,256 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 960 transitions. [2021-11-04 16:38:53,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:53,256 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 960 transitions. [2021-11-04 16:38:53,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-11-04 16:38:53,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:38:53,258 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:38:53,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-04 16:38:53,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:53,471 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:38:53,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:38:53,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1245585389, now seen corresponding path program 1 times [2021-11-04 16:38:53,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:38:53,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070301200] [2021-11-04 16:38:53,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:53,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:38:53,492 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:38:53,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041805987] [2021-11-04 16:38:53,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:53,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:53,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:38:53,494 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:38:53,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-04 16:38:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:38:53,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 1136 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 16:38:53,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:38:54,269 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 250 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-04 16:38:54,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:38:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 250 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-04 16:38:54,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:38:54,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070301200] [2021-11-04 16:38:54,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:38:54,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041805987] [2021-11-04 16:38:54,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041805987] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:38:54,785 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:38:54,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-04 16:38:54,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800906717] [2021-11-04 16:38:54,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:38:54,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 16:38:54,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:38:54,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 16:38:54,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 16:38:54,787 INFO L87 Difference]: Start difference. First operand 790 states and 960 transitions. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:55,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:38:55,655 INFO L93 Difference]: Finished difference Result 1575 states and 1956 transitions. [2021-11-04 16:38:55,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 16:38:55,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 409 [2021-11-04 16:38:55,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:38:55,658 INFO L225 Difference]: With dead ends: 1575 [2021-11-04 16:38:55,658 INFO L226 Difference]: Without dead ends: 838 [2021-11-04 16:38:55,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 812 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.88ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 16:38:55,660 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 686.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.51ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 845.20ms IncrementalHoareTripleChecker+Time [2021-11-04 16:38:55,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1091 Unknown, 0 Unchecked, 2.51ms Time], IncrementalHoareTripleChecker [27 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 845.20ms Time] [2021-11-04 16:38:55,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-11-04 16:38:55,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2021-11-04 16:38:55,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 828 states have (on average 1.2173913043478262) internal successors, (1008), 837 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:55,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1008 transitions. [2021-11-04 16:38:55,675 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1008 transitions. Word has length 409 [2021-11-04 16:38:55,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:38:55,675 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1008 transitions. [2021-11-04 16:38:55,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:55,675 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1008 transitions. [2021-11-04 16:38:55,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2021-11-04 16:38:55,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:38:55,678 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:38:55,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-04 16:38:55,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-04 16:38:55,891 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:38:55,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:38:55,892 INFO L85 PathProgramCache]: Analyzing trace with hash 354957970, now seen corresponding path program 2 times [2021-11-04 16:38:55,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:38:55,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059293177] [2021-11-04 16:38:55,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:55,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:38:55,906 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:38:55,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774667473] [2021-11-04 16:38:55,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 16:38:55,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:55,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:38:55,908 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:38:55,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-04 16:38:56,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 16:38:56,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:38:56,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-04 16:38:56,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:38:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 250 proven. 10 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-04 16:38:56,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:38:57,211 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 250 proven. 10 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-04 16:38:57,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:38:57,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059293177] [2021-11-04 16:38:57,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:38:57,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774667473] [2021-11-04 16:38:57,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774667473] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:38:57,212 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:38:57,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-04 16:38:57,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618163782] [2021-11-04 16:38:57,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:38:57,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-04 16:38:57,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:38:57,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-04 16:38:57,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 16:38:57,214 INFO L87 Difference]: Start difference. First operand 838 states and 1008 transitions. Second operand has 12 states, 12 states have (on average 17.416666666666668) internal successors, (209), 12 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:58,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:38:58,919 INFO L93 Difference]: Finished difference Result 1716 states and 2145 transitions. [2021-11-04 16:38:58,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-04 16:38:58,920 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.416666666666668) internal successors, (209), 12 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 415 [2021-11-04 16:38:58,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:38:58,922 INFO L225 Difference]: With dead ends: 1716 [2021-11-04 16:38:58,922 INFO L226 Difference]: Without dead ends: 934 [2021-11-04 16:38:58,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 818 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.40ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 16:38:58,924 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1468.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.28ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1676.38ms IncrementalHoareTripleChecker+Time [2021-11-04 16:38:58,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1682 Unknown, 0 Unchecked, 3.28ms Time], IncrementalHoareTripleChecker [74 Valid, 1608 Invalid, 0 Unknown, 0 Unchecked, 1676.38ms Time] [2021-11-04 16:38:58,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-11-04 16:38:58,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 934. [2021-11-04 16:38:58,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 924 states have (on average 1.1948051948051948) internal successors, (1104), 933 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:58,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1104 transitions. [2021-11-04 16:38:58,940 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1104 transitions. Word has length 415 [2021-11-04 16:38:58,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:38:58,940 INFO L470 AbstractCegarLoop]: Abstraction has 934 states and 1104 transitions. [2021-11-04 16:38:58,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.416666666666668) internal successors, (209), 12 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:38:58,940 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1104 transitions. [2021-11-04 16:38:58,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2021-11-04 16:38:58,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:38:58,943 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:38:58,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-04 16:38:59,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:59,159 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:38:59,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:38:59,160 INFO L85 PathProgramCache]: Analyzing trace with hash -378589582, now seen corresponding path program 3 times [2021-11-04 16:38:59,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:38:59,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069887543] [2021-11-04 16:38:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:38:59,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:38:59,184 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:38:59,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084783923] [2021-11-04 16:38:59,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 16:38:59,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:38:59,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:38:59,185 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:38:59,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-04 16:38:59,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 16:38:59,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:38:59,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 16:38:59,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:39:00,731 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2021-11-04 16:39:00,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:39:00,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:39:00,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069887543] [2021-11-04 16:39:00,732 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:39:00,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084783923] [2021-11-04 16:39:00,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084783923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:39:00,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:39:00,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:39:00,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672767485] [2021-11-04 16:39:00,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:39:00,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:39:00,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:39:00,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:39:00,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:39:00,734 INFO L87 Difference]: Start difference. First operand 934 states and 1104 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:39:01,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:39:01,238 INFO L93 Difference]: Finished difference Result 1790 states and 2122 transitions. [2021-11-04 16:39:01,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:39:01,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 427 [2021-11-04 16:39:01,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:39:01,249 INFO L225 Difference]: With dead ends: 1790 [2021-11-04 16:39:01,249 INFO L226 Difference]: Without dead ends: 932 [2021-11-04 16:39:01,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:39:01,252 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 419.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 488.48ms IncrementalHoareTripleChecker+Time [2021-11-04 16:39:01,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 525 Unknown, 0 Unchecked, 0.57ms Time], IncrementalHoareTripleChecker [1 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 488.48ms Time] [2021-11-04 16:39:01,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-11-04 16:39:01,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2021-11-04 16:39:01,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 922 states have (on average 1.1941431670281997) internal successors, (1101), 931 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:39:01,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1101 transitions. [2021-11-04 16:39:01,268 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1101 transitions. Word has length 427 [2021-11-04 16:39:01,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:39:01,269 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 1101 transitions. [2021-11-04 16:39:01,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:39:01,269 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1101 transitions. [2021-11-04 16:39:01,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2021-11-04 16:39:01,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:39:01,272 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:39:01,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-04 16:39:01,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-04 16:39:01,487 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:39:01,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:39:01,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1684890018, now seen corresponding path program 1 times [2021-11-04 16:39:01,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:39:01,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536829386] [2021-11-04 16:39:01,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:39:01,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:39:01,503 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:39:01,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166696880] [2021-11-04 16:39:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:39:01,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:39:01,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:39:01,504 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:39:01,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-04 16:39:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:39:01,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-04 16:39:01,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:39:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 109 proven. 55 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2021-11-04 16:39:02,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:39:03,143 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 109 proven. 55 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2021-11-04 16:39:03,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:39:03,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536829386] [2021-11-04 16:39:03,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:39:03,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166696880] [2021-11-04 16:39:03,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166696880] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:39:03,144 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:39:03,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-04 16:39:03,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041700322] [2021-11-04 16:39:03,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:39:03,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-04 16:39:03,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:39:03,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-04 16:39:03,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 16:39:03,146 INFO L87 Difference]: Start difference. First operand 932 states and 1101 transitions. Second operand has 24 states, 24 states have (on average 7.75) internal successors, (186), 24 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:39:04,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:39:04,657 INFO L93 Difference]: Finished difference Result 1996 states and 2520 transitions. [2021-11-04 16:39:04,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-04 16:39:04,658 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.75) internal successors, (186), 24 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 454 [2021-11-04 16:39:04,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:39:04,661 INFO L225 Difference]: With dead ends: 1996 [2021-11-04 16:39:04,661 INFO L226 Difference]: Without dead ends: 1124 [2021-11-04 16:39:04,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 884 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 219.63ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 16:39:04,662 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1257.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.92ms SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1471.90ms IncrementalHoareTripleChecker+Time [2021-11-04 16:39:04,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1892 Unknown, 0 Unchecked, 2.92ms Time], IncrementalHoareTripleChecker [236 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 1471.90ms Time] [2021-11-04 16:39:04,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2021-11-04 16:39:04,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1124. [2021-11-04 16:39:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1114 states have (on average 1.1606822262118492) internal successors, (1293), 1123 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:39:04,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1293 transitions. [2021-11-04 16:39:04,684 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1293 transitions. Word has length 454 [2021-11-04 16:39:04,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:39:04,685 INFO L470 AbstractCegarLoop]: Abstraction has 1124 states and 1293 transitions. [2021-11-04 16:39:04,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.75) internal successors, (186), 24 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:39:04,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1293 transitions. [2021-11-04 16:39:04,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2021-11-04 16:39:04,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:39:04,688 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:39:04,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-04 16:39:04,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-04 16:39:04,908 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:39:04,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:39:04,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1031309602, now seen corresponding path program 2 times [2021-11-04 16:39:04,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:39:04,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579216276] [2021-11-04 16:39:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:39:04,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:39:04,924 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:39:04,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677744090] [2021-11-04 16:39:04,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 16:39:04,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:39:04,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:39:04,925 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:39:04,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-04 16:39:05,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 16:39:05,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:39:05,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-04 16:39:05,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:39:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1592 backedges. 109 proven. 253 refuted. 0 times theorem prover too weak. 1230 trivial. 0 not checked. [2021-11-04 16:39:06,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:39:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1592 backedges. 109 proven. 253 refuted. 0 times theorem prover too weak. 1230 trivial. 0 not checked. [2021-11-04 16:39:07,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:39:07,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579216276] [2021-11-04 16:39:07,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:39:07,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677744090] [2021-11-04 16:39:07,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677744090] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:39:07,563 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:39:07,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-04 16:39:07,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913669525] [2021-11-04 16:39:07,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:39:07,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-04 16:39:07,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:39:07,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-04 16:39:07,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 16:39:07,566 INFO L87 Difference]: Start difference. First operand 1124 states and 1293 transitions. Second operand has 48 states, 48 states have (on average 4.375) internal successors, (210), 48 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:39:08,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:39:08,989 INFO L93 Difference]: Finished difference Result 2528 states and 3212 transitions. [2021-11-04 16:39:08,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-04 16:39:08,990 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.375) internal successors, (210), 48 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 502 [2021-11-04 16:39:08,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:39:08,993 INFO L225 Difference]: With dead ends: 2528 [2021-11-04 16:39:08,993 INFO L226 Difference]: Without dead ends: 1476 [2021-11-04 16:39:08,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1002 GetRequests, 956 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 911.23ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 16:39:08,995 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1082.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.64ms SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1324.25ms IncrementalHoareTripleChecker+Time [2021-11-04 16:39:08,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2019 Unknown, 0 Unchecked, 3.64ms Time], IncrementalHoareTripleChecker [535 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 1324.25ms Time] [2021-11-04 16:39:08,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-11-04 16:39:09,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1476. [2021-11-04 16:39:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1466 states have (on average 1.1221009549795362) internal successors, (1645), 1475 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:39:09,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1645 transitions. [2021-11-04 16:39:09,035 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1645 transitions. Word has length 502 [2021-11-04 16:39:09,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:39:09,036 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 1645 transitions. [2021-11-04 16:39:09,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.375) internal successors, (210), 48 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:39:09,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1645 transitions. [2021-11-04 16:39:09,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2021-11-04 16:39:09,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:39:09,040 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:39:09,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-04 16:39:09,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-04 16:39:09,260 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:39:09,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:39:09,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1349968158, now seen corresponding path program 3 times [2021-11-04 16:39:09,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:39:09,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809914587] [2021-11-04 16:39:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:39:09,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:39:09,279 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:39:09,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812835950] [2021-11-04 16:39:09,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 16:39:09,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:39:09,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:39:09,281 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:39:09,282 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