./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.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 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 06:01:38,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 06:01:38,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 06:01:38,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 06:01:38,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 06:01:38,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 06:01:38,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 06:01:38,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 06:01:38,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 06:01:38,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 06:01:38,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 06:01:38,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 06:01:38,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 06:01:38,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 06:01:38,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 06:01:38,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 06:01:38,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 06:01:38,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 06:01:38,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 06:01:38,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 06:01:38,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 06:01:38,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 06:01:38,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 06:01:38,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 06:01:38,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 06:01:38,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 06:01:38,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 06:01:38,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 06:01:38,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 06:01:38,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 06:01:38,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 06:01:38,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 06:01:38,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 06:01:38,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 06:01:38,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 06:01:38,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 06:01:38,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 06:01:38,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 06:01:38,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 06:01:38,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 06:01:38,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 06:01:38,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-03 06:01:38,328 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 06:01:38,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 06:01:38,332 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 06:01:38,332 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 06:01:38,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 06:01:38,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 06:01:38,334 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 06:01:38,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 06:01:38,334 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 06:01:38,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 06:01:38,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 06:01:38,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 06:01:38,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 06:01:38,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 06:01:38,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 06:01:38,336 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 06:01:38,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 06:01:38,337 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 06:01:38,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 06:01:38,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 06:01:38,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 06:01:38,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 06:01:38,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 06:01:38,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 06:01:38,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 06:01:38,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 06:01:38,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 06:01:38,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 06:01:38,340 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 06:01:38,340 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 06:01:38,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 06:01:38,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 06:01:38,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c [2021-11-03 06:01:38,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 06:01:38,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 06:01:38,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 06:01:38,576 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 06:01:38,576 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 06:01:38,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2021-11-03 06:01:38,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a675f09c/3a492a128f3542c2ae43d445d3f9060e/FLAG38932138b [2021-11-03 06:01:39,100 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 06:01:39,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2021-11-03 06:01:39,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a675f09c/3a492a128f3542c2ae43d445d3f9060e/FLAG38932138b [2021-11-03 06:01:39,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a675f09c/3a492a128f3542c2ae43d445d3f9060e [2021-11-03 06:01:39,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 06:01:39,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 06:01:39,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 06:01:39,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 06:01:39,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 06:01:39,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 06:01:39" (1/1) ... [2021-11-03 06:01:39,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe3e603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:01:39, skipping insertion in model container [2021-11-03 06:01:39,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 06:01:39" (1/1) ... [2021-11-03 06:01:39,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 06:01:39,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 06:01:39,524 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_OAT_test3-1.i[33021,33034] [2021-11-03 06:01:39,621 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_OAT_test3-1.i[44590,44603] [2021-11-03 06:01:39,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 06:01:39,651 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 06:01:39,686 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_OAT_test3-1.i[33021,33034] [2021-11-03 06:01:39,764 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_OAT_test3-1.i[44590,44603] [2021-11-03 06:01:39,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 06:01:39,805 INFO L208 MainTranslator]: Completed translation [2021-11-03 06:01:39,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:01:39 WrapperNode [2021-11-03 06:01:39,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 06:01:39,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 06:01:39,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 06:01:39,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 06:01:39,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:01:39" (1/1) ... [2021-11-03 06:01:39,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:01:39" (1/1) ... [2021-11-03 06:01:39,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 06:01:39,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 06:01:39,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 06:01:39,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 06:01:39,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:01:39" (1/1) ... [2021-11-03 06:01:39,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:01:39" (1/1) ... [2021-11-03 06:01:39,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:01:39" (1/1) ... [2021-11-03 06:01:39,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:01:39" (1/1) ... [2021-11-03 06:01:39,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:01:39" (1/1) ... [2021-11-03 06:01:39,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:01:39" (1/1) ... [2021-11-03 06:01:39,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:01:39" (1/1) ... [2021-11-03 06:01:39,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 06:01:39,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 06:01:40,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 06:01:40,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 06:01:40,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:01:39" (1/1) ... [2021-11-03 06:01:40,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 06:01:40,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:40,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 06:01:40,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 06:01:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 06:01:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 06:01:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 06:01:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 06:01:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 06:01:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 06:01:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 06:01:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 06:01:40,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 06:01:40,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 06:01:40,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 06:01:40,755 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 06:01:40,756 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-03 06:01:40,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 06:01:40 BoogieIcfgContainer [2021-11-03 06:01:40,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 06:01:40,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 06:01:40,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 06:01:40,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 06:01:40,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 06:01:39" (1/3) ... [2021-11-03 06:01:40,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ea3eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 06:01:40, skipping insertion in model container [2021-11-03 06:01:40,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:01:39" (2/3) ... [2021-11-03 06:01:40,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ea3eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 06:01:40, skipping insertion in model container [2021-11-03 06:01:40,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 06:01:40" (3/3) ... [2021-11-03 06:01:40,766 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-1.i [2021-11-03 06:01:40,770 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 06:01:40,770 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 06:01:40,810 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 06:01:40,818 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 06:01:40,818 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 06:01:40,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 195 states have (on average 1.7230769230769232) internal successors, (336), 201 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:40,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 06:01:40,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:40,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:40,856 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 06:01:40,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:40,859 INFO L85 PathProgramCache]: Analyzing trace with hash 239232295, now seen corresponding path program 1 times [2021-11-03 06:01:40,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:40,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615479014] [2021-11-03 06:01:40,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:40,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:01:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:01:41,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:41,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615479014] [2021-11-03 06:01:41,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615479014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:01:41,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:01:41,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 06:01:41,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018706971] [2021-11-03 06:01:41,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 06:01:41,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:41,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 06:01:41,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 06:01:41,075 INFO L87 Difference]: Start difference. First operand has 202 states, 195 states have (on average 1.7230769230769232) internal successors, (336), 201 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:41,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:41,601 INFO L93 Difference]: Finished difference Result 402 states and 670 transitions. [2021-11-03 06:01:41,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 06:01:41,604 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 06:01:41,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:41,612 INFO L225 Difference]: With dead ends: 402 [2021-11-03 06:01:41,613 INFO L226 Difference]: Without dead ends: 198 [2021-11-03 06:01:41,615 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 [2021-11-03 06:01:41,618 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 403.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.82ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 478.48ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:41,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 263 Unknown, 0 Unchecked, 1.82ms Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 478.48ms Time] [2021-11-03 06:01:41,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-03 06:01:41,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-03 06:01:41,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 192 states have (on average 1.3489583333333333) internal successors, (259), 197 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2021-11-03 06:01:41,667 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 9 [2021-11-03 06:01:41,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:41,668 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2021-11-03 06:01:41,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:41,668 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2021-11-03 06:01:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 06:01:41,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:41,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:41,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 06:01:41,671 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 06:01:41,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:41,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1042319138, now seen corresponding path program 1 times [2021-11-03 06:01:41,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:41,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645757464] [2021-11-03 06:01:41,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:41,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:01:41,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:01:41,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:41,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645757464] [2021-11-03 06:01:41,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645757464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:01:41,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:01:41,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:01:41,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850838617] [2021-11-03 06:01:41,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:01:41,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:41,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:01:41,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:01:41,748 INFO L87 Difference]: Start difference. First operand 198 states and 259 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:42,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:42,542 INFO L93 Difference]: Finished difference Result 445 states and 582 transitions. [2021-11-03 06:01:42,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:01:42,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-11-03 06:01:42,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:42,546 INFO L225 Difference]: With dead ends: 445 [2021-11-03 06:01:42,546 INFO L226 Difference]: Without dead ends: 337 [2021-11-03 06:01:42,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.55ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:01:42,548 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 173 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 603.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.20ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 749.14ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:42,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 0 Invalid, 803 Unknown, 0 Unchecked, 5.20ms Time], IncrementalHoareTripleChecker [3 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 749.14ms Time] [2021-11-03 06:01:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-03 06:01:42,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 200. [2021-11-03 06:01:42,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 194 states have (on average 1.3453608247422681) internal successors, (261), 199 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:42,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 261 transitions. [2021-11-03 06:01:42,566 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 261 transitions. Word has length 12 [2021-11-03 06:01:42,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:42,566 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 261 transitions. [2021-11-03 06:01:42,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:42,567 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 261 transitions. [2021-11-03 06:01:42,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 06:01:42,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:42,569 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:42,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 06:01:42,569 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 06:01:42,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:42,570 INFO L85 PathProgramCache]: Analyzing trace with hash 168111628, now seen corresponding path program 1 times [2021-11-03 06:01:42,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:42,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103361739] [2021-11-03 06:01:42,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:42,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:42,591 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:42,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998692250] [2021-11-03 06:01:42,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:42,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:42,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:42,598 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:42,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 06:01:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:01:42,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:01:42,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:01:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:01:42,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:01:42,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:42,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103361739] [2021-11-03 06:01:42,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:01:42,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998692250] [2021-11-03 06:01:42,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998692250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:01:42,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:01:42,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:01:42,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289937661] [2021-11-03 06:01:42,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:01:42,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:42,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:01:42,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:01:42,958 INFO L87 Difference]: Start difference. First operand 200 states and 261 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:43,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:43,423 INFO L93 Difference]: Finished difference Result 417 states and 549 transitions. [2021-11-03 06:01:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:01:43,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-03 06:01:43,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:43,425 INFO L225 Difference]: With dead ends: 417 [2021-11-03 06:01:43,425 INFO L226 Difference]: Without dead ends: 221 [2021-11-03 06:01:43,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:01:43,427 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 375.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.60ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 451.32ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:43,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 535 Unknown, 0 Unchecked, 1.60ms Time], IncrementalHoareTripleChecker [28 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 451.32ms Time] [2021-11-03 06:01:43,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-03 06:01:43,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2021-11-03 06:01:43,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 214 states have (on average 1.3130841121495327) internal successors, (281), 219 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) [2021-11-03 06:01:43,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 281 transitions. [2021-11-03 06:01:43,449 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 281 transitions. Word has length 64 [2021-11-03 06:01:43,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:43,449 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 281 transitions. [2021-11-03 06:01:43,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:43,449 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 281 transitions. [2021-11-03 06:01:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 06:01:43,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:43,455 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:43,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 06:01:43,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:43,672 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 06:01:43,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:43,672 INFO L85 PathProgramCache]: Analyzing trace with hash 521200010, now seen corresponding path program 1 times [2021-11-03 06:01:43,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:43,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843386293] [2021-11-03 06:01:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:43,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:43,694 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:43,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516461562] [2021-11-03 06:01:43,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:43,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:43,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:43,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:43,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 06:01:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:01:43,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:01:43,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:01:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:01:43,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:01:43,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:43,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843386293] [2021-11-03 06:01:43,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:01:43,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516461562] [2021-11-03 06:01:43,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516461562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:01:43,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:01:43,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:01:43,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648793630] [2021-11-03 06:01:43,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:01:43,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:43,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:01:43,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:01:43,984 INFO L87 Difference]: Start difference. First operand 220 states and 281 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:44,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:44,446 INFO L93 Difference]: Finished difference Result 428 states and 550 transitions. [2021-11-03 06:01:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:01:44,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-03 06:01:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:44,448 INFO L225 Difference]: With dead ends: 428 [2021-11-03 06:01:44,448 INFO L226 Difference]: Without dead ends: 212 [2021-11-03 06:01:44,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.68ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:01:44,450 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 247 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 359.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.20ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 442.91ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:44,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 0 Invalid, 540 Unknown, 0 Unchecked, 2.20ms Time], IncrementalHoareTripleChecker [24 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 442.91ms Time] [2021-11-03 06:01:44,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-03 06:01:44,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 206. [2021-11-03 06:01:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 200 states have (on average 1.3) internal successors, (260), 205 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:44,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 260 transitions. [2021-11-03 06:01:44,472 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 260 transitions. Word has length 64 [2021-11-03 06:01:44,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:44,473 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 260 transitions. [2021-11-03 06:01:44,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:44,473 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 260 transitions. [2021-11-03 06:01:44,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 06:01:44,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:44,478 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:44,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 06:01:44,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-03 06:01:44,694 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 06:01:44,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1012352744, now seen corresponding path program 1 times [2021-11-03 06:01:44,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:44,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770895805] [2021-11-03 06:01:44,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:44,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:44,710 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:44,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [423020694] [2021-11-03 06:01:44,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:44,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:44,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:44,720 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:44,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 06:01:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:01:44,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 06:01:44,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:01:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:01:45,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:01:45,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:45,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770895805] [2021-11-03 06:01:45,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:01:45,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423020694] [2021-11-03 06:01:45,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423020694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:01:45,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:01:45,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:01:45,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873815952] [2021-11-03 06:01:45,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:01:45,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:45,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:01:45,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:01:45,089 INFO L87 Difference]: Start difference. First operand 206 states and 260 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:45,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:45,615 INFO L93 Difference]: Finished difference Result 542 states and 683 transitions. [2021-11-03 06:01:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:01:45,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-03 06:01:45,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:45,617 INFO L225 Difference]: With dead ends: 542 [2021-11-03 06:01:45,617 INFO L226 Difference]: Without dead ends: 340 [2021-11-03 06:01:45,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:01:45,619 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 132 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 422.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.54ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 509.36ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:45,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 0 Invalid, 576 Unknown, 0 Unchecked, 1.54ms Time], IncrementalHoareTripleChecker [5 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 509.36ms Time] [2021-11-03 06:01:45,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-03 06:01:45,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 312. [2021-11-03 06:01:45,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 306 states have (on average 1.2843137254901962) internal successors, (393), 311 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 393 transitions. [2021-11-03 06:01:45,630 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 393 transitions. Word has length 64 [2021-11-03 06:01:45,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:45,630 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 393 transitions. [2021-11-03 06:01:45,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:45,630 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 393 transitions. [2021-11-03 06:01:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 06:01:45,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:45,631 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:45,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 06:01:45,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:45,848 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 06:01:45,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:45,848 INFO L85 PathProgramCache]: Analyzing trace with hash -147792665, now seen corresponding path program 1 times [2021-11-03 06:01:45,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:45,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594098671] [2021-11-03 06:01:45,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:45,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:45,861 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:45,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115418035] [2021-11-03 06:01:45,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:45,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:45,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:45,862 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:45,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 06:01:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:01:46,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:01:46,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:01:46,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:01:46,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:01:46,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:46,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594098671] [2021-11-03 06:01:46,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:01:46,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115418035] [2021-11-03 06:01:46,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115418035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:01:46,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:01:46,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:01:46,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55907672] [2021-11-03 06:01:46,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:01:46,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:46,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:01:46,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:01:46,175 INFO L87 Difference]: Start difference. First operand 312 states and 393 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:46,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:46,608 INFO L93 Difference]: Finished difference Result 578 states and 737 transitions. [2021-11-03 06:01:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:01:46,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-03 06:01:46,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:46,611 INFO L225 Difference]: With dead ends: 578 [2021-11-03 06:01:46,611 INFO L226 Difference]: Without dead ends: 314 [2021-11-03 06:01:46,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:01:46,612 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 345.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 419.86ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:46,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 504 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [2 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 419.86ms Time] [2021-11-03 06:01:46,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-03 06:01:46,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-11-03 06:01:46,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 308 states have (on average 1.2824675324675325) internal successors, (395), 313 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:46,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 395 transitions. [2021-11-03 06:01:46,622 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 395 transitions. Word has length 71 [2021-11-03 06:01:46,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:46,622 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 395 transitions. [2021-11-03 06:01:46,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:46,623 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 395 transitions. [2021-11-03 06:01:46,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 06:01:46,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:46,623 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:46,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 06:01:46,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:46,848 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 06:01:46,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:46,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1386404344, now seen corresponding path program 1 times [2021-11-03 06:01:46,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:46,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069003106] [2021-11-03 06:01:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:46,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:46,863 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:46,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516573705] [2021-11-03 06:01:46,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:46,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:46,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:46,865 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:46,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 06:01:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:01:47,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 06:01:47,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:01:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 06:01:47,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:01:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 06:01:47,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:47,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069003106] [2021-11-03 06:01:47,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:01:47,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516573705] [2021-11-03 06:01:47,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516573705] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:01:47,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:01:47,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-03 06:01:47,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128257615] [2021-11-03 06:01:47,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 06:01:47,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:47,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 06:01:47,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-03 06:01:47,308 INFO L87 Difference]: Start difference. First operand 314 states and 395 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:47,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:47,893 INFO L93 Difference]: Finished difference Result 586 states and 749 transitions. [2021-11-03 06:01:47,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 06:01:47,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 73 [2021-11-03 06:01:47,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:47,895 INFO L225 Difference]: With dead ends: 586 [2021-11-03 06:01:47,895 INFO L226 Difference]: Without dead ends: 320 [2021-11-03 06:01:47,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.94ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-03 06:01:47,896 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 479.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 568.74ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:47,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 769 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [13 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 568.74ms Time] [2021-11-03 06:01:47,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-11-03 06:01:47,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2021-11-03 06:01:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 314 states have (on average 1.2770700636942676) internal successors, (401), 319 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 401 transitions. [2021-11-03 06:01:47,905 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 401 transitions. Word has length 73 [2021-11-03 06:01:47,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:47,905 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 401 transitions. [2021-11-03 06:01:47,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:47,905 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 401 transitions. [2021-11-03 06:01:47,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 06:01:47,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:47,906 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:47,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-03 06:01:48,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:48,130 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 06:01:48,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:48,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1628542297, now seen corresponding path program 2 times [2021-11-03 06:01:48,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:48,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516615035] [2021-11-03 06:01:48,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:48,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:48,151 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:48,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440151149] [2021-11-03 06:01:48,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 06:01:48,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:48,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:48,153 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:48,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 06:01:48,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-03 06:01:48,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:01:48,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:01:48,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:01:48,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-03 06:01:48,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-03 06:01:48,425 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-03 06:01:48,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:01:48,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:48,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516615035] [2021-11-03 06:01:48,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:01:48,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440151149] [2021-11-03 06:01:48,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440151149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:01:48,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:01:48,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:01:48,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379152130] [2021-11-03 06:01:48,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:01:48,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:48,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:01:48,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:01:48,428 INFO L87 Difference]: Start difference. First operand 320 states and 401 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:49,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:49,036 INFO L93 Difference]: Finished difference Result 429 states and 545 transitions. [2021-11-03 06:01:49,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:01:49,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 79 [2021-11-03 06:01:49,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:49,038 INFO L225 Difference]: With dead ends: 429 [2021-11-03 06:01:49,038 INFO L226 Difference]: Without dead ends: 404 [2021-11-03 06:01:49,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.97ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:01:49,039 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 135 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 480.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.15ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 587.62ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:49,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 0 Invalid, 782 Unknown, 0 Unchecked, 2.15ms Time], IncrementalHoareTripleChecker [3 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 587.62ms Time] [2021-11-03 06:01:49,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-11-03 06:01:49,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 322. [2021-11-03 06:01:49,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 316 states have (on average 1.2753164556962024) internal successors, (403), 321 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:49,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 403 transitions. [2021-11-03 06:01:49,048 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 403 transitions. Word has length 79 [2021-11-03 06:01:49,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:49,048 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 403 transitions. [2021-11-03 06:01:49,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:49,049 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 403 transitions. [2021-11-03 06:01:49,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 06:01:49,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:49,050 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:49,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 06:01:49,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:49,263 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 06:01:49,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:49,264 INFO L85 PathProgramCache]: Analyzing trace with hash 819064170, now seen corresponding path program 1 times [2021-11-03 06:01:49,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:49,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279466210] [2021-11-03 06:01:49,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:49,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:49,297 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:49,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766114892] [2021-11-03 06:01:49,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:49,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:49,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:49,304 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:49,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 06:01:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:01:49,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:01:49,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:01:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-03 06:01:49,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:01:49,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:49,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279466210] [2021-11-03 06:01:49,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:01:49,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766114892] [2021-11-03 06:01:49,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766114892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:01:49,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:01:49,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:01:49,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917421555] [2021-11-03 06:01:49,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:01:49,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:49,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:01:49,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:01:49,641 INFO L87 Difference]: Start difference. First operand 322 states and 403 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:50,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:50,106 INFO L93 Difference]: Finished difference Result 533 states and 689 transitions. [2021-11-03 06:01:50,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:01:50,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-03 06:01:50,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:50,108 INFO L225 Difference]: With dead ends: 533 [2021-11-03 06:01:50,108 INFO L226 Difference]: Without dead ends: 364 [2021-11-03 06:01:50,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:01:50,109 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 383.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 452.99ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:50,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 521 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [28 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 452.99ms Time] [2021-11-03 06:01:50,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-11-03 06:01:50,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 362. [2021-11-03 06:01:50,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 356 states have (on average 1.2443820224719102) internal successors, (443), 361 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:50,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 443 transitions. [2021-11-03 06:01:50,118 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 443 transitions. Word has length 111 [2021-11-03 06:01:50,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:50,118 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 443 transitions. [2021-11-03 06:01:50,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:50,119 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 443 transitions. [2021-11-03 06:01:50,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 06:01:50,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:50,120 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:50,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 06:01:50,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:50,332 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 06:01:50,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:50,332 INFO L85 PathProgramCache]: Analyzing trace with hash 498859118, now seen corresponding path program 1 times [2021-11-03 06:01:50,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:50,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198498894] [2021-11-03 06:01:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:50,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:50,344 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:50,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194241676] [2021-11-03 06:01:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:50,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:50,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:50,346 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:50,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 06:01:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:01:50,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:01:50,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:01:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-03 06:01:50,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:01:50,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:50,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198498894] [2021-11-03 06:01:50,673 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:01:50,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194241676] [2021-11-03 06:01:50,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194241676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:01:50,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:01:50,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:01:50,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545673454] [2021-11-03 06:01:50,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:01:50,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:50,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:01:50,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:01:50,675 INFO L87 Difference]: Start difference. First operand 362 states and 443 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:51,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:51,214 INFO L93 Difference]: Finished difference Result 548 states and 684 transitions. [2021-11-03 06:01:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:01:51,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-03 06:01:51,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:51,216 INFO L225 Difference]: With dead ends: 548 [2021-11-03 06:01:51,216 INFO L226 Difference]: Without dead ends: 339 [2021-11-03 06:01:51,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.38ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:01:51,217 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 130 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 432.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.85ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 518.63ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:51,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 0 Invalid, 630 Unknown, 0 Unchecked, 1.85ms Time], IncrementalHoareTripleChecker [24 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 518.63ms Time] [2021-11-03 06:01:51,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-03 06:01:51,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 334. [2021-11-03 06:01:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 328 states have (on average 1.2225609756097562) internal successors, (401), 333 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:51,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 401 transitions. [2021-11-03 06:01:51,225 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 401 transitions. Word has length 111 [2021-11-03 06:01:51,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:51,226 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 401 transitions. [2021-11-03 06:01:51,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:51,226 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 401 transitions. [2021-11-03 06:01:51,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 06:01:51,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:51,227 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:51,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-03 06:01:51,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-03 06:01:51,443 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 06:01:51,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:51,444 INFO L85 PathProgramCache]: Analyzing trace with hash -383989728, now seen corresponding path program 1 times [2021-11-03 06:01:51,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:51,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635577558] [2021-11-03 06:01:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:51,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:51,457 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:51,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204205944] [2021-11-03 06:01:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:51,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:51,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:51,466 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:51,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 06:01:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:01:51,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 06:01:51,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:01:51,787 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 06:01:51,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:01:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 06:01:52,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:52,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635577558] [2021-11-03 06:01:52,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:01:52,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204205944] [2021-11-03 06:01:52,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204205944] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:01:52,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:01:52,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-03 06:01:52,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521470461] [2021-11-03 06:01:52,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 06:01:52,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:52,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 06:01:52,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-03 06:01:52,008 INFO L87 Difference]: Start difference. First operand 334 states and 401 transitions. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:52,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:52,640 INFO L93 Difference]: Finished difference Result 632 states and 773 transitions. [2021-11-03 06:01:52,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 06:01:52,641 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-03 06:01:52,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:52,642 INFO L225 Difference]: With dead ends: 632 [2021-11-03 06:01:52,642 INFO L226 Difference]: Without dead ends: 346 [2021-11-03 06:01:52,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.87ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-03 06:01:52,644 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 511.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.16ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 610.15ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:52,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 787 Unknown, 0 Unchecked, 2.16ms Time], IncrementalHoareTripleChecker [40 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 610.15ms Time] [2021-11-03 06:01:52,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-11-03 06:01:52,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2021-11-03 06:01:52,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 340 states have (on average 1.214705882352941) internal successors, (413), 345 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:52,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 413 transitions. [2021-11-03 06:01:52,653 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 413 transitions. Word has length 111 [2021-11-03 06:01:52,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:52,653 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 413 transitions. [2021-11-03 06:01:52,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:52,654 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 413 transitions. [2021-11-03 06:01:52,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-03 06:01:52,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:52,655 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:52,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-03 06:01:52,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:52,870 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 06:01:52,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:52,870 INFO L85 PathProgramCache]: Analyzing trace with hash 562680000, now seen corresponding path program 2 times [2021-11-03 06:01:52,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:52,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454108245] [2021-11-03 06:01:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:52,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:52,885 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:52,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1461679352] [2021-11-03 06:01:52,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 06:01:52,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:52,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:52,889 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:52,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 06:01:53,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 06:01:53,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:01:53,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 06:01:53,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:01:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-03 06:01:53,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:01:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-03 06:01:53,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:53,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454108245] [2021-11-03 06:01:53,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:01:53,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461679352] [2021-11-03 06:01:53,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461679352] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:01:53,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:01:53,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-03 06:01:53,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170015486] [2021-11-03 06:01:53,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-03 06:01:53,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-03 06:01:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-03 06:01:53,709 INFO L87 Difference]: Start difference. First operand 346 states and 413 transitions. Second operand has 24 states, 24 states have (on average 5.25) internal successors, (126), 24 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:54,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:54,413 INFO L93 Difference]: Finished difference Result 668 states and 821 transitions. [2021-11-03 06:01:54,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 06:01:54,414 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.25) internal successors, (126), 24 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-03 06:01:54,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:54,415 INFO L225 Difference]: With dead ends: 668 [2021-11-03 06:01:54,415 INFO L226 Difference]: Without dead ends: 370 [2021-11-03 06:01:54,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 226.70ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-03 06:01:54,417 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 549.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.37ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 679.92ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:54,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1095 Unknown, 0 Unchecked, 2.37ms Time], IncrementalHoareTripleChecker [83 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 679.92ms Time] [2021-11-03 06:01:54,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-03 06:01:54,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2021-11-03 06:01:54,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 364 states have (on average 1.2005494505494505) internal successors, (437), 369 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:54,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 437 transitions. [2021-11-03 06:01:54,426 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 437 transitions. Word has length 123 [2021-11-03 06:01:54,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:54,426 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 437 transitions. [2021-11-03 06:01:54,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.25) internal successors, (126), 24 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:54,427 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 437 transitions. [2021-11-03 06:01:54,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-03 06:01:54,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:54,429 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:54,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-03 06:01:54,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-03 06:01:54,653 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 06:01:54,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:54,654 INFO L85 PathProgramCache]: Analyzing trace with hash -27956736, now seen corresponding path program 3 times [2021-11-03 06:01:54,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:54,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301112135] [2021-11-03 06:01:54,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:54,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:54,666 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:54,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647284008] [2021-11-03 06:01:54,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 06:01:54,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:54,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:54,667 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:54,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-03 06:01:54,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 06:01:54,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:01:54,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 06:01:54,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:01:55,095 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-11-03 06:01:55,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:01:55,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:55,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301112135] [2021-11-03 06:01:55,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:01:55,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647284008] [2021-11-03 06:01:55,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647284008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:01:55,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:01:55,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:01:55,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671842715] [2021-11-03 06:01:55,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:01:55,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:55,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:01:55,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:01:55,098 INFO L87 Difference]: Start difference. First operand 370 states and 437 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:55,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:55,629 INFO L93 Difference]: Finished difference Result 828 states and 988 transitions. [2021-11-03 06:01:55,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 06:01:55,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-11-03 06:01:55,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:55,632 INFO L225 Difference]: With dead ends: 828 [2021-11-03 06:01:55,632 INFO L226 Difference]: Without dead ends: 506 [2021-11-03 06:01:55,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.31ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:01:55,633 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 495 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 413.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.84ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 508.14ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:55,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 0 Invalid, 580 Unknown, 0 Unchecked, 1.84ms Time], IncrementalHoareTripleChecker [5 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 508.14ms Time] [2021-11-03 06:01:55,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-03 06:01:55,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 454. [2021-11-03 06:01:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 448 states have (on average 1.2075892857142858) internal successors, (541), 453 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 541 transitions. [2021-11-03 06:01:55,645 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 541 transitions. Word has length 147 [2021-11-03 06:01:55,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:55,645 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 541 transitions. [2021-11-03 06:01:55,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:55,646 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 541 transitions. [2021-11-03 06:01:55,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-03 06:01:55,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:55,647 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:55,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-03 06:01:55,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-03 06:01:55,872 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 06:01:55,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:55,872 INFO L85 PathProgramCache]: Analyzing trace with hash -535720422, now seen corresponding path program 1 times [2021-11-03 06:01:55,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:55,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414837698] [2021-11-03 06:01:55,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:55,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:55,885 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:55,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146393300] [2021-11-03 06:01:55,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:55,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:55,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:55,888 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:55,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 06:01:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:01:56,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 06:01:56,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:01:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-03 06:01:56,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:01:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-03 06:01:57,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:01:57,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414837698] [2021-11-03 06:01:57,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:01:57,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146393300] [2021-11-03 06:01:57,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146393300] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:01:57,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:01:57,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-03 06:01:57,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781997696] [2021-11-03 06:01:57,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-03 06:01:57,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:01:57,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-03 06:01:57,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 06:01:57,655 INFO L87 Difference]: Start difference. First operand 454 states and 541 transitions. Second operand has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:58,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:01:58,798 INFO L93 Difference]: Finished difference Result 879 states and 1091 transitions. [2021-11-03 06:01:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-03 06:01:58,798 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-03 06:01:58,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:01:58,799 INFO L225 Difference]: With dead ends: 879 [2021-11-03 06:01:58,800 INFO L226 Difference]: Without dead ends: 498 [2021-11-03 06:01:58,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 964.10ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 06:01:58,802 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 903.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.38ms SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1093.30ms IncrementalHoareTripleChecker+Time [2021-11-03 06:01:58,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1729 Unknown, 0 Unchecked, 3.38ms Time], IncrementalHoareTripleChecker [191 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 1093.30ms Time] [2021-11-03 06:01:58,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-11-03 06:01:58,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2021-11-03 06:01:58,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 492 states have (on average 1.1890243902439024) internal successors, (585), 497 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:58,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 585 transitions. [2021-11-03 06:01:58,816 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 585 transitions. Word has length 154 [2021-11-03 06:01:58,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:01:58,816 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 585 transitions. [2021-11-03 06:01:58,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:01:58,816 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 585 transitions. [2021-11-03 06:01:58,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-03 06:01:58,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:01:58,818 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:01:58,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 06:01:59,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-03 06:01:59,032 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 06:01:59,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:01:59,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1925067386, now seen corresponding path program 2 times [2021-11-03 06:01:59,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:01:59,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446982098] [2021-11-03 06:01:59,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:01:59,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:01:59,054 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:01:59,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525689672] [2021-11-03 06:01:59,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 06:01:59,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:01:59,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:01:59,055 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:01:59,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-03 06:01:59,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 06:01:59,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:01:59,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-03 06:01:59,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:02:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 2 proven. 990 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-03 06:02:00,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:02:04,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 2 proven. 990 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-03 06:02:04,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:02:04,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446982098] [2021-11-03 06:02:04,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:02:04,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525689672] [2021-11-03 06:02:04,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525689672] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:02:04,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:02:04,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 92 [2021-11-03 06:02:04,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867075603] [2021-11-03 06:02:04,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-03 06:02:04,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:02:04,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-03 06:02:04,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-03 06:02:04,313 INFO L87 Difference]: Start difference. First operand 498 states and 585 transitions. Second operand has 92 states, 92 states have (on average 2.1847826086956523) internal successors, (201), 92 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:02:05,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:02:05,732 INFO L93 Difference]: Finished difference Result 900 states and 1113 transitions. [2021-11-03 06:02:05,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-03 06:02:05,733 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.1847826086956523) internal successors, (201), 92 states have internal predecessors, (201), 0 states have call successors, (0), 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 198 [2021-11-03 06:02:05,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:02:05,735 INFO L225 Difference]: With dead ends: 900 [2021-11-03 06:02:05,735 INFO L226 Difference]: Without dead ends: 544 [2021-11-03 06:02:05,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4242.44ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-03 06:02:05,737 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 1833 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1067.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.44ms SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1340.32ms IncrementalHoareTripleChecker+Time [2021-11-03 06:02:05,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2035 Unknown, 0 Unchecked, 3.44ms Time], IncrementalHoareTripleChecker [202 Valid, 1833 Invalid, 0 Unknown, 0 Unchecked, 1340.32ms Time] [2021-11-03 06:02:05,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-11-03 06:02:05,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2021-11-03 06:02:05,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 538 states have (on average 1.1728624535315986) internal successors, (631), 543 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:02:05,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 631 transitions. [2021-11-03 06:02:05,752 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 631 transitions. Word has length 198 [2021-11-03 06:02:05,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:02:05,752 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 631 transitions. [2021-11-03 06:02:05,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.1847826086956523) internal successors, (201), 92 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:02:05,752 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 631 transitions. [2021-11-03 06:02:05,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-03 06:02:05,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:02:05,755 INFO L514 BasicCegarLoop]: trace histogram [90, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:02:05,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-03 06:02:05,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-03 06:02:05,971 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 06:02:05,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:02:05,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1358050298, now seen corresponding path program 3 times [2021-11-03 06:02:05,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:02:05,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84874081] [2021-11-03 06:02:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:02:05,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:02:05,993 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:02:05,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059477282] [2021-11-03 06:02:05,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 06:02:05,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:02:05,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:02:05,995 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:02:06,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process Killed by 15