./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 5b36d44f 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-5b36d44 [2021-11-07 22:07:39,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 22:07:39,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 22:07:39,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 22:07:39,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 22:07:39,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 22:07:39,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 22:07:39,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 22:07:39,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 22:07:39,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 22:07:39,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 22:07:39,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 22:07:39,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 22:07:39,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 22:07:39,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 22:07:39,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 22:07:39,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 22:07:39,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 22:07:39,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 22:07:39,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 22:07:39,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 22:07:39,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 22:07:39,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 22:07:39,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 22:07:40,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 22:07:40,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 22:07:40,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 22:07:40,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 22:07:40,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 22:07:40,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 22:07:40,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 22:07:40,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 22:07:40,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 22:07:40,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 22:07:40,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 22:07:40,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 22:07:40,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 22:07:40,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 22:07:40,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 22:07:40,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 22:07:40,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 22:07:40,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 22:07:40,026 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 22:07:40,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 22:07:40,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 22:07:40,029 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 22:07:40,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 22:07:40,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 22:07:40,030 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 22:07:40,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 22:07:40,030 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 22:07:40,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 22:07:40,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 22:07:40,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 22:07:40,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 22:07:40,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 22:07:40,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 22:07:40,032 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 22:07:40,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 22:07:40,032 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 22:07:40,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 22:07:40,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 22:07:40,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 22:07:40,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 22:07:40,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:07:40,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 22:07:40,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 22:07:40,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 22:07:40,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 22:07:40,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 22:07:40,035 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 22:07:40,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 22:07:40,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 22:07:40,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 22:07:40,036 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c [2021-11-07 22:07:40,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 22:07:40,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 22:07:40,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 22:07:40,281 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 22:07:40,282 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 22:07:40,283 INFO L432 ainManager$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 [2021-11-07 22:07:40,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6a62b181/51aab671643147b9ba79c7d686df0215/FLAGed496fb38 [2021-11-07 22:07:40,795 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 22:07:40,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2021-11-07 22:07:40,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6a62b181/51aab671643147b9ba79c7d686df0215/FLAGed496fb38 [2021-11-07 22:07:40,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6a62b181/51aab671643147b9ba79c7d686df0215 [2021-11-07 22:07:40,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 22:07:40,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 22:07:40,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 22:07:40,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 22:07:40,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 22:07:40,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:07:40" (1/1) ... [2021-11-07 22:07:40,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a5584b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:40, skipping insertion in model container [2021-11-07 22:07:40,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:07:40" (1/1) ... [2021-11-07 22:07:40,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 22:07:40,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 22:07:41,230 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] [2021-11-07 22:07:41,335 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] [2021-11-07 22:07:41,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:07:41,357 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 22:07:41,391 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] [2021-11-07 22:07:41,417 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] [2021-11-07 22:07:41,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:07:41,451 INFO L208 MainTranslator]: Completed translation [2021-11-07 22:07:41,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:41 WrapperNode [2021-11-07 22:07:41,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 22:07:41,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 22:07:41,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 22:07:41,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 22:07:41,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:41" (1/1) ... [2021-11-07 22:07:41,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:41" (1/1) ... [2021-11-07 22:07:41,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 22:07:41,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 22:07:41,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 22:07:41,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 22:07:41,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:41" (1/1) ... [2021-11-07 22:07:41,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:41" (1/1) ... [2021-11-07 22:07:41,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:41" (1/1) ... [2021-11-07 22:07:41,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:41" (1/1) ... [2021-11-07 22:07:41,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:41" (1/1) ... [2021-11-07 22:07:41,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:41" (1/1) ... [2021-11-07 22:07:41,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:41" (1/1) ... [2021-11-07 22:07:41,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 22:07:41,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 22:07:41,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 22:07:41,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 22:07:41,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:41" (1/1) ... [2021-11-07 22:07:41,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:07:41,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:41,655 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) [2021-11-07 22:07:41,661 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 [2021-11-07 22:07:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 22:07:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 22:07:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 22:07:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 22:07:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 22:07:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 22:07:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 22:07:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 22:07:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 22:07:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 22:07:41,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 22:07:42,590 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 22:07:42,590 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-07 22:07:42,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:07:42 BoogieIcfgContainer [2021-11-07 22:07:42,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 22:07:42,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 22:07:42,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 22:07:42,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 22:07:42,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:07:40" (1/3) ... [2021-11-07 22:07:42,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ac0981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:07:42, skipping insertion in model container [2021-11-07 22:07:42,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:41" (2/3) ... [2021-11-07 22:07:42,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ac0981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:07:42, skipping insertion in model container [2021-11-07 22:07:42,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:07:42" (3/3) ... [2021-11-07 22:07:42,599 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-1.i [2021-11-07 22:07:42,603 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 22:07:42,603 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 22:07:42,642 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 22:07:42,647 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 [2021-11-07 22:07:42,647 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 22:07:42,665 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) [2021-11-07 22:07:42,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 22:07:42,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:42,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:07:42,670 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)] === [2021-11-07 22:07:42,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:42,674 INFO L85 PathProgramCache]: Analyzing trace with hash 239232295, now seen corresponding path program 1 times [2021-11-07 22:07:42,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:42,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646762070] [2021-11-07 22:07:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:42,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:07:42,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:42,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646762070] [2021-11-07 22:07:42,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646762070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:42,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:42,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 22:07:42,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643012300] [2021-11-07 22:07:42,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:42,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 22:07:42,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:42,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 22:07:42,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:07:42,820 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) [2021-11-07 22:07:42,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:42,873 INFO L93 Difference]: Finished difference Result 402 states and 670 transitions. [2021-11-07 22:07:42,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 22:07:42,875 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 [2021-11-07 22:07:42,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:42,885 INFO L225 Difference]: With dead ends: 402 [2021-11-07 22:07:42,885 INFO L226 Difference]: Without dead ends: 198 [2021-11-07 22:07:42,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:07:42,890 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.98ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:42,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 3.98ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 22:07:42,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-07 22:07:42,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-07 22:07:42,933 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) [2021-11-07 22:07:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2021-11-07 22:07:42,934 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 9 [2021-11-07 22:07:42,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:42,935 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2021-11-07 22:07:42,935 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) [2021-11-07 22:07:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2021-11-07 22:07:42,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 22:07:42,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:42,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:07:42,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 22:07:42,936 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)] === [2021-11-07 22:07:42,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:42,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1042319138, now seen corresponding path program 1 times [2021-11-07 22:07:42,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:42,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131764610] [2021-11-07 22:07:42,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:42,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:07:42,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:42,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131764610] [2021-11-07 22:07:42,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131764610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:42,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:42,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:07:42,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508905656] [2021-11-07 22:07:42,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:42,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:07:42,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:42,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:07:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:07:42,984 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) [2021-11-07 22:07:43,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:43,250 INFO L93 Difference]: Finished difference Result 445 states and 582 transitions. [2021-11-07 22:07:43,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:07:43,251 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 [2021-11-07 22:07:43,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:43,252 INFO L225 Difference]: With dead ends: 445 [2021-11-07 22:07:43,252 INFO L226 Difference]: Without dead ends: 337 [2021-11-07 22:07:43,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.27ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:07:43,254 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 173 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 184.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.95ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 234.82ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:43,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 642 Invalid, 161 Unknown, 0 Unchecked, 4.95ms Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 234.82ms Time] [2021-11-07 22:07:43,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-07 22:07:43,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 200. [2021-11-07 22:07:43,269 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) [2021-11-07 22:07:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 261 transitions. [2021-11-07 22:07:43,270 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 261 transitions. Word has length 12 [2021-11-07 22:07:43,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:43,271 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 261 transitions. [2021-11-07 22:07:43,271 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) [2021-11-07 22:07:43,272 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 261 transitions. [2021-11-07 22:07:43,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 22:07:43,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:43,274 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] [2021-11-07 22:07:43,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 22:07:43,275 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)] === [2021-11-07 22:07:43,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:43,275 INFO L85 PathProgramCache]: Analyzing trace with hash 168111628, now seen corresponding path program 1 times [2021-11-07 22:07:43,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:43,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784542270] [2021-11-07 22:07:43,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:43,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:43,306 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:07:43,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1439001635] [2021-11-07 22:07:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:43,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:07:43,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:43,315 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) [2021-11-07 22:07:43,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 22:07:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:43,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:07:43,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:07:43,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:07:43,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:43,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784542270] [2021-11-07 22:07:43,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:07:43,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439001635] [2021-11-07 22:07:43,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439001635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:43,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:43,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:07:43,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128080666] [2021-11-07 22:07:43,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:43,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:07:43,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:43,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:07:43,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:07:43,626 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) [2021-11-07 22:07:43,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:43,675 INFO L93 Difference]: Finished difference Result 417 states and 549 transitions. [2021-11-07 22:07:43,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:07:43,676 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 [2021-11-07 22:07:43,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:43,677 INFO L225 Difference]: With dead ends: 417 [2021-11-07 22:07:43,677 INFO L226 Difference]: Without dead ends: 221 [2021-11-07 22:07:43,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:07:43,681 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 9 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.81ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.83ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:43,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 463 Invalid, 72 Unknown, 0 Unchecked, 0.81ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 42.83ms Time] [2021-11-07 22:07:43,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-07 22:07:43,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2021-11-07 22:07:43,694 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) [2021-11-07 22:07:43,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 281 transitions. [2021-11-07 22:07:43,695 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 281 transitions. Word has length 64 [2021-11-07 22:07:43,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:43,695 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 281 transitions. [2021-11-07 22:07:43,696 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) [2021-11-07 22:07:43,696 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 281 transitions. [2021-11-07 22:07:43,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 22:07:43,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:43,701 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] [2021-11-07 22:07:43,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 22:07:43,911 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 [2021-11-07 22:07:43,912 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)] === [2021-11-07 22:07:43,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:43,912 INFO L85 PathProgramCache]: Analyzing trace with hash 521200010, now seen corresponding path program 1 times [2021-11-07 22:07:43,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:43,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261727571] [2021-11-07 22:07:43,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:43,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:43,924 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:07:43,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399033300] [2021-11-07 22:07:43,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:43,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:07:43,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:43,925 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) [2021-11-07 22:07:43,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 22:07:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:44,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:07:44,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:07:44,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:07:44,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:44,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261727571] [2021-11-07 22:07:44,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:07:44,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399033300] [2021-11-07 22:07:44,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399033300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:44,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:44,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:07:44,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784727159] [2021-11-07 22:07:44,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:44,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:07:44,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:44,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:07:44,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:07:44,179 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) [2021-11-07 22:07:44,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:44,235 INFO L93 Difference]: Finished difference Result 428 states and 550 transitions. [2021-11-07 22:07:44,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:07:44,236 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 [2021-11-07 22:07:44,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:44,237 INFO L225 Difference]: With dead ends: 428 [2021-11-07 22:07:44,237 INFO L226 Difference]: Without dead ends: 212 [2021-11-07 22:07:44,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.88ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:07:44,240 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 247 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.34ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:44,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 474 Invalid, 66 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 42.34ms Time] [2021-11-07 22:07:44,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-07 22:07:44,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 206. [2021-11-07 22:07:44,248 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) [2021-11-07 22:07:44,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 260 transitions. [2021-11-07 22:07:44,248 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 260 transitions. Word has length 64 [2021-11-07 22:07:44,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:44,249 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 260 transitions. [2021-11-07 22:07:44,249 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) [2021-11-07 22:07:44,249 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 260 transitions. [2021-11-07 22:07:44,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 22:07:44,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:44,251 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] [2021-11-07 22:07:44,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 22:07:44,468 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 [2021-11-07 22:07:44,468 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)] === [2021-11-07 22:07:44,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:44,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1012352744, now seen corresponding path program 1 times [2021-11-07 22:07:44,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:44,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784581460] [2021-11-07 22:07:44,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:44,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:44,479 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:07:44,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342817854] [2021-11-07 22:07:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:44,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:07:44,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:44,496 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) [2021-11-07 22:07:44,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 22:07:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:44,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:07:44,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:07:44,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:07:44,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:44,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784581460] [2021-11-07 22:07:44,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:07:44,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342817854] [2021-11-07 22:07:44,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342817854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:44,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:44,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:07:44,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253628901] [2021-11-07 22:07:44,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:44,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:07:44,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:44,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:07:44,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:07:44,881 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) [2021-11-07 22:07:44,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:44,936 INFO L93 Difference]: Finished difference Result 542 states and 683 transitions. [2021-11-07 22:07:44,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:07:44,937 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 [2021-11-07 22:07:44,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:44,938 INFO L225 Difference]: With dead ends: 542 [2021-11-07 22:07:44,938 INFO L226 Difference]: Without dead ends: 340 [2021-11-07 22:07:44,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:07:44,939 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 132 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.08ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.08ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:44,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 544 Invalid, 32 Unknown, 0 Unchecked, 1.08ms Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 47.08ms Time] [2021-11-07 22:07:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-07 22:07:44,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 312. [2021-11-07 22:07:44,945 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) [2021-11-07 22:07:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 393 transitions. [2021-11-07 22:07:44,946 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 393 transitions. Word has length 64 [2021-11-07 22:07:44,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:44,946 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 393 transitions. [2021-11-07 22:07:44,946 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) [2021-11-07 22:07:44,946 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 393 transitions. [2021-11-07 22:07:44,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 22:07:44,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:44,947 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] [2021-11-07 22:07:44,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 22:07:45,184 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 [2021-11-07 22:07:45,185 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)] === [2021-11-07 22:07:45,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:45,185 INFO L85 PathProgramCache]: Analyzing trace with hash -147792665, now seen corresponding path program 1 times [2021-11-07 22:07:45,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:45,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474259320] [2021-11-07 22:07:45,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:45,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:45,195 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:07:45,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409756762] [2021-11-07 22:07:45,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:45,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:07:45,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:45,196 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) [2021-11-07 22:07:45,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 22:07:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:45,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:07:45,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:45,440 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 [2021-11-07 22:07:45,458 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 [2021-11-07 22:07:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 22:07:45,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:07:45,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:45,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474259320] [2021-11-07 22:07:45,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:07:45,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409756762] [2021-11-07 22:07:45,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409756762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:45,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:45,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:07:45,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816381680] [2021-11-07 22:07:45,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:45,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:07:45,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:45,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:07:45,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:07:45,478 INFO L87 Difference]: Start difference. First operand 312 states and 393 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:07:45,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:45,690 INFO L93 Difference]: Finished difference Result 421 states and 537 transitions. [2021-11-07 22:07:45,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:07:45,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2021-11-07 22:07:45,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:45,692 INFO L225 Difference]: With dead ends: 421 [2021-11-07 22:07:45,692 INFO L226 Difference]: Without dead ends: 396 [2021-11-07 22:07:45,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.50ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:07:45,693 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 135 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 146.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.22ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 193.66ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:45,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 644 Invalid, 138 Unknown, 0 Unchecked, 2.22ms Time], IncrementalHoareTripleChecker [3 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 193.66ms Time] [2021-11-07 22:07:45,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-07 22:07:45,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 314. [2021-11-07 22:07:45,699 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) [2021-11-07 22:07:45,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 395 transitions. [2021-11-07 22:07:45,700 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 395 transitions. Word has length 71 [2021-11-07 22:07:45,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:45,700 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 395 transitions. [2021-11-07 22:07:45,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:07:45,700 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 395 transitions. [2021-11-07 22:07:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 22:07:45,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:45,701 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:07:45,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-07 22:07:45,915 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 [2021-11-07 22:07:45,915 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:07:45,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:45,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2000986198, now seen corresponding path program 1 times [2021-11-07 22:07:45,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:45,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144325496] [2021-11-07 22:07:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:45,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:45,928 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:07:45,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742807385] [2021-11-07 22:07:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:45,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:07:45,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:45,930 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) [2021-11-07 22:07:45,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 22:07:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:46,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:07:46,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:46,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 22:07:46,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:07:46,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:46,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144325496] [2021-11-07 22:07:46,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:07:46,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742807385] [2021-11-07 22:07:46,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742807385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:46,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:46,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:07:46,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341566409] [2021-11-07 22:07:46,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:46,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:07:46,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:46,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:07:46,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:07:46,203 INFO L87 Difference]: Start difference. First operand 314 states and 395 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:07:46,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:46,253 INFO L93 Difference]: Finished difference Result 525 states and 681 transitions. [2021-11-07 22:07:46,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:07:46,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-07 22:07:46,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:46,255 INFO L225 Difference]: With dead ends: 525 [2021-11-07 22:07:46,255 INFO L226 Difference]: Without dead ends: 356 [2021-11-07 22:07:46,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:07:46,256 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 9 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.81ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.72ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:46,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 449 Invalid, 72 Unknown, 0 Unchecked, 0.81ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 42.72ms Time] [2021-11-07 22:07:46,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-11-07 22:07:46,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 354. [2021-11-07 22:07:46,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 348 states have (on average 1.25) internal successors, (435), 353 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:07:46,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 435 transitions. [2021-11-07 22:07:46,263 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 435 transitions. Word has length 103 [2021-11-07 22:07:46,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:46,264 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 435 transitions. [2021-11-07 22:07:46,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:07:46,264 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 435 transitions. [2021-11-07 22:07:46,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 22:07:46,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:46,265 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:07:46,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 22:07:46,484 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 [2021-11-07 22:07:46,484 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:07:46,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:46,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1973776046, now seen corresponding path program 1 times [2021-11-07 22:07:46,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:46,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763132732] [2021-11-07 22:07:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:46,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:46,500 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:07:46,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147973235] [2021-11-07 22:07:46,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:46,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:07:46,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:46,502 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) [2021-11-07 22:07:46,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 22:07:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:46,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:07:46,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:46,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 22:07:46,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:07:46,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:46,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763132732] [2021-11-07 22:07:46,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:07:46,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147973235] [2021-11-07 22:07:46,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147973235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:46,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:46,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:07:46,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061977617] [2021-11-07 22:07:46,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:46,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:07:46,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:46,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:07:46,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:07:46,755 INFO L87 Difference]: Start difference. First operand 354 states and 435 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:07:46,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:46,800 INFO L93 Difference]: Finished difference Result 540 states and 676 transitions. [2021-11-07 22:07:46,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:07:46,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-07 22:07:46,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:46,802 INFO L225 Difference]: With dead ends: 540 [2021-11-07 22:07:46,802 INFO L226 Difference]: Without dead ends: 331 [2021-11-07 22:07:46,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.14ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:07:46,803 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 130 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.90ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.45ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:46,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 564 Invalid, 66 Unknown, 0 Unchecked, 0.90ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 34.45ms Time] [2021-11-07 22:07:46,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-11-07 22:07:46,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 326. [2021-11-07 22:07:46,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 320 states have (on average 1.228125) internal successors, (393), 325 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) [2021-11-07 22:07:46,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 393 transitions. [2021-11-07 22:07:46,809 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 393 transitions. Word has length 103 [2021-11-07 22:07:46,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:46,810 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 393 transitions. [2021-11-07 22:07:46,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:07:46,811 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 393 transitions. [2021-11-07 22:07:46,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 22:07:46,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:46,811 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:07:46,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 22:07:47,020 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 [2021-11-07 22:07:47,021 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)] === [2021-11-07 22:07:47,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:47,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1090927200, now seen corresponding path program 1 times [2021-11-07 22:07:47,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:47,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100282628] [2021-11-07 22:07:47,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:47,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:47,031 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:07:47,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706953031] [2021-11-07 22:07:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:47,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:07:47,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:47,040 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) [2021-11-07 22:07:47,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 22:07:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:47,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:07:47,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:07:47,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:07:47,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:47,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100282628] [2021-11-07 22:07:47,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:07:47,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706953031] [2021-11-07 22:07:47,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706953031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:47,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:47,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:07:47,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728503110] [2021-11-07 22:07:47,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:47,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:07:47,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:47,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:07:47,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:07:47,342 INFO L87 Difference]: Start difference. First operand 326 states and 393 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:07:47,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:47,508 INFO L93 Difference]: Finished difference Result 740 states and 900 transitions. [2021-11-07 22:07:47,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 22:07:47,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-07 22:07:47,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:47,510 INFO L225 Difference]: With dead ends: 740 [2021-11-07 22:07:47,510 INFO L226 Difference]: Without dead ends: 462 [2021-11-07 22:07:47,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.02ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:07:47,511 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 497 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.81ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 147.21ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:47,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 498 Invalid, 82 Unknown, 0 Unchecked, 1.81ms Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 147.21ms Time] [2021-11-07 22:07:47,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-07 22:07:47,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 410. [2021-11-07 22:07:47,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 404 states have (on average 1.2301980198019802) internal successors, (497), 409 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:07:47,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 497 transitions. [2021-11-07 22:07:47,519 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 497 transitions. Word has length 103 [2021-11-07 22:07:47,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:47,520 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 497 transitions. [2021-11-07 22:07:47,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:07:47,520 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 497 transitions. [2021-11-07 22:07:47,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 22:07:47,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:47,520 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:07:47,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-07 22:07:47,755 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 [2021-11-07 22:07:47,756 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)] === [2021-11-07 22:07:47,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:47,756 INFO L85 PathProgramCache]: Analyzing trace with hash 541561274, now seen corresponding path program 1 times [2021-11-07 22:07:47,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:47,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863873489] [2021-11-07 22:07:47,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:47,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:47,765 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:07:47,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265185930] [2021-11-07 22:07:47,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:47,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:07:47,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:47,781 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) [2021-11-07 22:07:47,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 22:07:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:47,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-07 22:07:47,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:47,908 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 [2021-11-07 22:07:47,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-07 22:07:47,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:47,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:47,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:47,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-07 22:07:48,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2021-11-07 22:07:48,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-07 22:07:48,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 54 [2021-11-07 22:07:48,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:48,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2021-11-07 22:07:48,748 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 13 treesize of output 9 [2021-11-07 22:07:48,754 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 27 treesize of output 23 [2021-11-07 22:07:48,762 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-11-07 22:07:48,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-11-07 22:07:50,042 INFO L354 Elim1Store]: treesize reduction 364, result has 11.9 percent of original size [2021-11-07 22:07:50,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2832 treesize of output 2281 [2021-11-07 22:07:50,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:50,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:50,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:50,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:54,465 INFO L354 Elim1Store]: treesize reduction 7776, result has 3.0 percent of original size [2021-11-07 22:07:54,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 3301 treesize of output 1804 [2021-11-07 22:07:54,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:54,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863873489] [2021-11-07 22:07:54,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:07:54,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265185930] [2021-11-07 22:07:54,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-07 22:07:54,532 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:54,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-07 22:07:54,532 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-11-07 22:07:54,533 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-07 22:07:54,538 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-07 22:07:54,540 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-07 22:07:54,540 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-11-07 22:07:54,540 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-11-07 22:07:54,541 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-11-07 22:07:54,541 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-07 22:07:54,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 22:07:54,753 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 [2021-11-07 22:07:54,756 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:07:54,758 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 22:07:54,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:07:54 BoogieIcfgContainer [2021-11-07 22:07:54,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 22:07:54,779 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 22:07:54,779 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 22:07:54,779 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 22:07:54,780 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:07:42" (3/4) ... [2021-11-07 22:07:54,782 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 22:07:54,782 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 22:07:54,782 INFO L158 Benchmark]: Toolchain (without parser) took 13959.34ms. Allocated memory was 100.7MB in the beginning and 195.0MB in the end (delta: 94.4MB). Free memory was 66.2MB in the beginning and 146.3MB in the end (delta: -80.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2021-11-07 22:07:54,783 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 73.4MB. Free memory was 35.2MB in the beginning and 35.1MB in the end (delta: 36.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 22:07:54,783 INFO L158 Benchmark]: CACSL2BoogieTranslator took 627.35ms. Allocated memory is still 100.7MB. Free memory was 66.0MB in the beginning and 54.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-07 22:07:54,783 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.29ms. Allocated memory is still 100.7MB. Free memory was 54.0MB in the beginning and 47.3MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-07 22:07:54,783 INFO L158 Benchmark]: Boogie Preprocessor took 96.20ms. Allocated memory is still 100.7MB. Free memory was 47.3MB in the beginning and 40.3MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-07 22:07:54,784 INFO L158 Benchmark]: RCFGBuilder took 970.18ms. Allocated memory is still 100.7MB. Free memory was 40.3MB in the beginning and 52.3MB in the end (delta: -12.0MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2021-11-07 22:07:54,784 INFO L158 Benchmark]: TraceAbstraction took 12184.19ms. Allocated memory was 100.7MB in the beginning and 195.0MB in the end (delta: 94.4MB). Free memory was 51.7MB in the beginning and 146.3MB in the end (delta: -94.6MB). Peak memory consumption was 77.9MB. Max. memory is 16.1GB. [2021-11-07 22:07:54,784 INFO L158 Benchmark]: Witness Printer took 3.09ms. Allocated memory is still 195.0MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 22:07:54,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 73.4MB. Free memory was 35.2MB in the beginning and 35.1MB in the end (delta: 36.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 627.35ms. Allocated memory is still 100.7MB. Free memory was 66.0MB in the beginning and 54.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.29ms. Allocated memory is still 100.7MB. Free memory was 54.0MB in the beginning and 47.3MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.20ms. Allocated memory is still 100.7MB. Free memory was 47.3MB in the beginning and 40.3MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 970.18ms. Allocated memory is still 100.7MB. Free memory was 40.3MB in the beginning and 52.3MB in the end (delta: -12.0MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. * TraceAbstraction took 12184.19ms. Allocated memory was 100.7MB in the beginning and 195.0MB in the end (delta: 94.4MB). Free memory was 51.7MB in the beginning and 146.3MB in the end (delta: -94.6MB). Peak memory consumption was 77.9MB. Max. memory is 16.1GB. * Witness Printer took 3.09ms. Allocated memory is still 195.0MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 750]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of bitwiseXor at line 745, overapproximation of bitwiseAnd at line 745. Possible FailurePath: [L706] int count_int_int = 0; [L733] int i; [L734] example_user_t *user, *tmp, *users=((void *)0); [L735] i=0 [L735] EXPR \read(i) [L735] COND TRUE i<10 [L736] user = (example_user_t*)malloc(sizeof(example_user_t)) [L737] COND FALSE !(user == ((void *)0)) [L740] EXPR \read(i) [L740] user->id = i [L741] EXPR \read(i) [L741] EXPR \read(i) [L741] user->cookie = i*i [L742] unsigned _ha_hashv; [L742] unsigned _hj_i,_hj_j,_hj_k; [L742] unsigned const char *_hj_key=(unsigned const char*)(&((user)->id)); [L742] _ha_hashv = 0xfeedbeefu [L742] EXPR _hj_j = 0x9e3779b9u [L742] _hj_i = _hj_j = 0x9e3779b9u [L742] _hj_k = (unsigned)(sizeof(int)) [L742] COND FALSE !(_hj_k >= 12U) [L742] _ha_hashv += (unsigned)(sizeof(int)) [L742] case 11: [L742] case 10: [L742] case 9: [L742] case 8: [L742] case 7: [L742] case 6: [L742] case 5: [L742] case 4: [L742] EXPR _hj_key[3] [L742] _hj_i += ( (unsigned)_hj_key[3] << 24 ) [L742] case 3: [L742] EXPR _hj_key[2] [L742] _hj_i += ( (unsigned)_hj_key[2] << 16 ) [L742] case 2: [L742] EXPR _hj_key[1] [L742] _hj_i += ( (unsigned)_hj_key[1] << 8 ) [L742] case 1: [L742] EXPR _hj_key[0] [L742] _hj_i += _hj_key[0] [L742] _hj_i -= _hj_j [L742] _hj_i -= _ha_hashv [L742] _hj_i ^= ( _ha_hashv >> 13 ) [L742] _hj_j -= _ha_hashv [L742] _hj_j -= _hj_i [L742] _hj_j ^= ( _hj_i << 8 ) [L742] _ha_hashv -= _hj_i [L742] _ha_hashv -= _hj_j [L742] _ha_hashv ^= ( _hj_j >> 13 ) [L742] _hj_i -= _hj_j [L742] _hj_i -= _ha_hashv [L742] _hj_i ^= ( _ha_hashv >> 12 ) [L742] _hj_j -= _ha_hashv [L742] _hj_j -= _hj_i [L742] _hj_j ^= ( _hj_i << 16 ) [L742] _ha_hashv -= _hj_i [L742] _ha_hashv -= _hj_j [L742] _ha_hashv ^= ( _hj_j >> 5 ) [L742] _hj_i -= _hj_j [L742] _hj_i -= _ha_hashv [L742] _hj_i ^= ( _ha_hashv >> 3 ) [L742] _hj_j -= _ha_hashv [L742] _hj_j -= _hj_i [L742] _hj_j ^= ( _hj_i << 10 ) [L742] _ha_hashv -= _hj_i [L742] _ha_hashv -= _hj_j [L742] _ha_hashv ^= ( _hj_j >> 15 ) [L742] (user)->hh.hashv = (_ha_hashv) [L742] (user)->hh.key = (char*) (&((user)->id)) [L742] (user)->hh.keylen = (unsigned) (sizeof(int)) [L742] COND TRUE !(users) [L742] (user)->hh.next = ((void *)0) [L742] (user)->hh.prev = ((void *)0) [L742] (user)->hh.tbl = (UT_hash_table*)malloc(sizeof(UT_hash_table)) [L742] EXPR (user)->hh.tbl [L742] COND FALSE !(!(user)->hh.tbl) [L742] (user)->hh.tbl [L742] EXPR (user)->hh.tbl [L742] (user)->hh.tbl->tail = &((user)->hh) [L742] EXPR (user)->hh.tbl [L742] (user)->hh.tbl->num_buckets = 32U [L742] EXPR (user)->hh.tbl [L742] (user)->hh.tbl->log2_num_buckets = 5U [L742] EXPR (user)->hh.tbl [L742] (user)->hh.tbl->hho = (char*)(&(user)->hh) - (char*)(user) [L742] EXPR (user)->hh.tbl [L742] (user)->hh.tbl->buckets = (UT_hash_bucket*)malloc(32U * sizeof(struct UT_hash_bucket)) [L742] EXPR (user)->hh.tbl [L742] (user)->hh.tbl->signature = 0xa0111fe1u [L742] EXPR (user)->hh.tbl [L742] EXPR (user)->hh.tbl->buckets [L742] COND FALSE !(!(user)->hh.tbl->buckets) [L742] EXPR (user)->hh.tbl [L742] (user)->hh.tbl->buckets [L742] (users) = (user) [L742] unsigned _ha_bkt; [L742] EXPR (users)->hh.tbl [L742] EXPR (users)->hh.tbl->num_items [L742] (users)->hh.tbl->num_items++ [L742] EXPR (users)->hh.tbl [L742] EXPR (users)->hh.tbl->num_buckets [L742] _ha_bkt = ((_ha_hashv) & (((users)->hh.tbl->num_buckets) - 1U)) [L742] EXPR (users)->hh.tbl [L742] EXPR (users)->hh.tbl->buckets [L742] UT_hash_bucket *_ha_head = &((users)->hh.tbl->buckets[_ha_bkt]); [L742] EXPR _ha_head->count [L742] _ha_head->count++ [L742] EXPR _ha_head->hh_head [L742] (&(user)->hh)->hh_next = _ha_head->hh_head [L742] (&(user)->hh)->hh_prev = ((void *)0) [L742] EXPR _ha_head->hh_head [L742] COND FALSE !(_ha_head->hh_head != ((void *)0)) [L742] _ha_head->hh_head = (&(user)->hh) [L742] EXPR _ha_head->count [L742] EXPR _ha_head->expand_mult [L742] (_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand [L742] EXPR (&(user)->hh)->tbl [L742] EXPR (&(user)->hh)->tbl->noexpand [L742] (_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand [L742] COND FALSE !((_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand) [L735] EXPR \read(i) [L735] i++ [L735] EXPR \read(i) [L735] COND FALSE !(i<10) [L744] i=0 [L744] EXPR \read(i) [L744] COND TRUE i<10 [L745] unsigned _hf_hashv; [L745] unsigned _hj_i,_hj_j,_hj_k; [L745] unsigned const char *_hj_key=(unsigned const char*)(&i); [L745] _hf_hashv = 0xfeedbeefu [L745] EXPR _hj_j = 0x9e3779b9u [L745] _hj_i = _hj_j = 0x9e3779b9u [L745] _hj_k = (unsigned)(sizeof(int)) [L745] COND FALSE !(_hj_k >= 12U) [L745] _hf_hashv += (unsigned)(sizeof(int)) [L745] case 11: [L745] case 10: [L745] case 9: [L745] case 8: [L745] case 7: [L745] case 6: [L745] case 5: [L745] case 4: [L745] EXPR _hj_key[3] [L745] _hj_i += ( (unsigned)_hj_key[3] << 24 ) [L745] case 3: [L745] EXPR _hj_key[2] [L745] _hj_i += ( (unsigned)_hj_key[2] << 16 ) [L745] case 2: [L745] EXPR _hj_key[1] [L745] _hj_i += ( (unsigned)_hj_key[1] << 8 ) [L745] case 1: [L745] EXPR _hj_key[0] [L745] _hj_i += _hj_key[0] [L745] _hj_i -= _hj_j [L745] _hj_i -= _hf_hashv [L745] _hj_i ^= ( _hf_hashv >> 13 ) [L745] _hj_j -= _hf_hashv [L745] _hj_j -= _hj_i [L745] _hj_j ^= ( _hj_i << 8 ) [L745] _hf_hashv -= _hj_i [L745] _hf_hashv -= _hj_j [L745] _hf_hashv ^= ( _hj_j >> 13 ) [L745] _hj_i -= _hj_j [L745] _hj_i -= _hf_hashv [L745] _hj_i ^= ( _hf_hashv >> 12 ) [L745] _hj_j -= _hf_hashv [L745] _hj_j -= _hj_i [L745] _hj_j ^= ( _hj_i << 16 ) [L745] _hf_hashv -= _hj_i [L745] _hf_hashv -= _hj_j [L745] _hf_hashv ^= ( _hj_j >> 5 ) [L745] _hj_i -= _hj_j [L745] _hj_i -= _hf_hashv [L745] _hj_i ^= ( _hf_hashv >> 3 ) [L745] _hj_j -= _hf_hashv [L745] _hj_j -= _hj_i [L745] _hj_j ^= ( _hj_i << 10 ) [L745] _hf_hashv -= _hj_i [L745] _hf_hashv -= _hj_j [L745] _hf_hashv ^= ( _hj_j >> 15 ) [L745] (tmp) = ((void *)0) [L745] COND TRUE \read(*users) [L745] unsigned _hf_bkt; [L745] EXPR (users)->hh.tbl [L745] EXPR (users)->hh.tbl->num_buckets [L745] _hf_bkt = ((_hf_hashv) & (((users)->hh.tbl->num_buckets) - 1U)) [L745] EXPR (users)->hh.tbl [L745] EXPR (users)->hh.tbl->buckets [L745] EXPR ((users)->hh.tbl->buckets[ _hf_bkt ]).hh_head [L745] COND FALSE !(((users)->hh.tbl->buckets[ _hf_bkt ]).hh_head != ((void *)0)) [L745] (tmp) = ((void *)0) [L745] COND FALSE !((tmp) != ((void *)0)) [L746] COND FALSE !(tmp != ((void *)0)) [L750] reach_error() - UnprovableResult [Line: 703]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 202 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 12116.91ms, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 22.74ms, AutomataDifference: 1037.09ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 12.19ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1332 SdHoareTripleChecker+Valid, 785.10ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1332 mSDsluCounter, 4541 SdHoareTripleChecker+Invalid, 615.20ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2278 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 569 IncrementalHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 2263 mSDtfsCounter, 569 mSolverCounterSat, 18.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 577 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.62ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=410occurred in iteration=9, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 98.49ms AutomataMinimizationTime, 9 MinimizatonAttempts, 313 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 327.08ms SsaConstructionTime, 356.29ms SatisfiabilityAnalysisTime, 7820.58ms InterpolantComputationTime, 703 NumberOfCodeBlocks, 703 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 584 ConstructedInterpolants, 0 QuantifiedInterpolants, 1117 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2355 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 14/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 22:07:54,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_Bitvector.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-5b36d44 [2021-11-07 22:07:56,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 22:07:56,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 22:07:56,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 22:07:56,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 22:07:56,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 22:07:56,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 22:07:56,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 22:07:56,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 22:07:56,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 22:07:56,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 22:07:56,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 22:07:56,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 22:07:56,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 22:07:56,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 22:07:56,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 22:07:56,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 22:07:56,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 22:07:56,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 22:07:56,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 22:07:56,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 22:07:56,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 22:07:56,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 22:07:56,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 22:07:56,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 22:07:56,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 22:07:56,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 22:07:56,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 22:07:56,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 22:07:56,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 22:07:56,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 22:07:56,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 22:07:56,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 22:07:56,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 22:07:56,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 22:07:56,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 22:07:56,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 22:07:56,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 22:07:56,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 22:07:56,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 22:07:56,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 22:07:56,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-07 22:07:56,680 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 22:07:56,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 22:07:56,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 22:07:56,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 22:07:56,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 22:07:56,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 22:07:56,684 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 22:07:56,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 22:07:56,684 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 22:07:56,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 22:07:56,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 22:07:56,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 22:07:56,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 22:07:56,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 22:07:56,686 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 22:07:56,686 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 22:07:56,686 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 22:07:56,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 22:07:56,687 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 22:07:56,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 22:07:56,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 22:07:56,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 22:07:56,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 22:07:56,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:07:56,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 22:07:56,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 22:07:56,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 22:07:56,688 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 22:07:56,689 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 22:07:56,689 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 22:07:56,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 22:07:56,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 22:07:56,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 22:07:56,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 22:07:56,690 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c [2021-11-07 22:07:56,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 22:07:56,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 22:07:56,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 22:07:56,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 22:07:56,969 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 22:07:56,970 INFO L432 ainManager$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 [2021-11-07 22:07:57,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/944a90f28/b4c12a8e04e74374879562fdceeb77e6/FLAG2f602013a [2021-11-07 22:07:57,499 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 22:07:57,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2021-11-07 22:07:57,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/944a90f28/b4c12a8e04e74374879562fdceeb77e6/FLAG2f602013a [2021-11-07 22:07:57,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/944a90f28/b4c12a8e04e74374879562fdceeb77e6 [2021-11-07 22:07:57,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 22:07:57,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 22:07:57,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 22:07:57,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 22:07:57,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 22:07:57,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:07:57" (1/1) ... [2021-11-07 22:07:57,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3400caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:57, skipping insertion in model container [2021-11-07 22:07:57,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:07:57" (1/1) ... [2021-11-07 22:07:57,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 22:07:57,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 22:07:58,210 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] [2021-11-07 22:07:58,339 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] [2021-11-07 22:07:58,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:07:58,363 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 22:07:58,393 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] [2021-11-07 22:07:58,464 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] [2021-11-07 22:07:58,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:07:58,506 INFO L208 MainTranslator]: Completed translation [2021-11-07 22:07:58,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:58 WrapperNode [2021-11-07 22:07:58,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 22:07:58,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 22:07:58,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 22:07:58,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 22:07:58,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:58" (1/1) ... [2021-11-07 22:07:58,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:58" (1/1) ... [2021-11-07 22:07:58,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 22:07:58,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 22:07:58,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 22:07:58,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 22:07:58,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:58" (1/1) ... [2021-11-07 22:07:58,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:58" (1/1) ... [2021-11-07 22:07:58,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:58" (1/1) ... [2021-11-07 22:07:58,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:58" (1/1) ... [2021-11-07 22:07:58,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:58" (1/1) ... [2021-11-07 22:07:58,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:58" (1/1) ... [2021-11-07 22:07:58,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:58" (1/1) ... [2021-11-07 22:07:58,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 22:07:58,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 22:07:58,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 22:07:58,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 22:07:58,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:58" (1/1) ... [2021-11-07 22:07:58,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:07:58,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:58,737 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) [2021-11-07 22:07:58,759 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 [2021-11-07 22:07:58,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 22:07:58,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 22:07:58,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 22:07:58,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 22:07:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 22:07:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 22:07:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 22:07:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 22:07:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 22:07:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 22:07:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 22:07:58,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 22:08:02,071 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 22:08:02,072 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-07 22:08:02,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:08:02 BoogieIcfgContainer [2021-11-07 22:08:02,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 22:08:02,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 22:08:02,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 22:08:02,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 22:08:02,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:07:57" (1/3) ... [2021-11-07 22:08:02,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12461af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:08:02, skipping insertion in model container [2021-11-07 22:08:02,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:58" (2/3) ... [2021-11-07 22:08:02,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12461af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:08:02, skipping insertion in model container [2021-11-07 22:08:02,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:08:02" (3/3) ... [2021-11-07 22:08:02,079 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-1.i [2021-11-07 22:08:02,082 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 22:08:02,082 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 22:08:02,118 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 22:08:02,122 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 [2021-11-07 22:08:02,123 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 22:08:02,134 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) [2021-11-07 22:08:02,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 22:08:02,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:08:02,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:08:02,139 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)] === [2021-11-07 22:08:02,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:08:02,146 INFO L85 PathProgramCache]: Analyzing trace with hash 239232295, now seen corresponding path program 1 times [2021-11-07 22:08:02,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:08:02,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110868733] [2021-11-07 22:08:02,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:08:02,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:08:02,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:08:02,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:08:02,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 22:08:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:08:02,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 22:08:02,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:08:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:08:02,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:08:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:08:02,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:08:02,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110868733] [2021-11-07 22:08:02,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110868733] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:08:02,390 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:08:02,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 22:08:02,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987267497] [2021-11-07 22:08:02,392 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:08:02,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 22:08:02,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:08:02,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 22:08:02,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:08:02,427 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) [2021-11-07 22:08:02,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:08:02,471 INFO L93 Difference]: Finished difference Result 402 states and 670 transitions. [2021-11-07 22:08:02,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 22:08:02,473 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 [2021-11-07 22:08:02,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:08:02,482 INFO L225 Difference]: With dead ends: 402 [2021-11-07 22:08:02,483 INFO L226 Difference]: Without dead ends: 198 [2021-11-07 22:08:02,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.09ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:08:02,490 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 22:08:02,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 3.68ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 22:08:02,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-07 22:08:02,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-07 22:08:02,531 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) [2021-11-07 22:08:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2021-11-07 22:08:02,532 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 9 [2021-11-07 22:08:02,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:08:02,533 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2021-11-07 22:08:02,533 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) [2021-11-07 22:08:02,533 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2021-11-07 22:08:02,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 22:08:02,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:08:02,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:08:02,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 22:08:02,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:08:02,746 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)] === [2021-11-07 22:08:02,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:08:02,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1042319138, now seen corresponding path program 1 times [2021-11-07 22:08:02,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:08:02,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226828233] [2021-11-07 22:08:02,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:08:02,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:08:02,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:08:02,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:08:02,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 22:08:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:08:02,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:08:02,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:08:02,918 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 [2021-11-07 22:08:02,957 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 [2021-11-07 22:08:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:08:02,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:08:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:08:03,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:08:03,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226828233] [2021-11-07 22:08:03,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226828233] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:08:03,051 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:08:03,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 22:08:03,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629683393] [2021-11-07 22:08:03,052 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:08:03,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 22:08:03,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:08:03,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 22:08:03,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:08:03,053 INFO L87 Difference]: Start difference. First operand 198 states and 259 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:05,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 22:08:06,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:08:06,395 INFO L93 Difference]: Finished difference Result 552 states and 722 transitions. [2021-11-07 22:08:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 22:08:06,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 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 [2021-11-07 22:08:06,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:08:06,398 INFO L225 Difference]: With dead ends: 552 [2021-11-07 22:08:06,398 INFO L226 Difference]: Without dead ends: 444 [2021-11-07 22:08:06,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.07ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 22:08:06,400 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 477 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3075.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.94ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3291.00ms IncrementalHoareTripleChecker+Time [2021-11-07 22:08:06,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 756 Invalid, 210 Unknown, 0 Unchecked, 7.94ms Time], IncrementalHoareTripleChecker [8 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 3291.00ms Time] [2021-11-07 22:08:06,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-07 22:08:06,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 200. [2021-11-07 22:08:06,409 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) [2021-11-07 22:08:06,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 261 transitions. [2021-11-07 22:08:06,409 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 261 transitions. Word has length 12 [2021-11-07 22:08:06,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:08:06,410 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 261 transitions. [2021-11-07 22:08:06,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:06,410 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 261 transitions. [2021-11-07 22:08:06,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 22:08:06,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:08:06,412 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] [2021-11-07 22:08:06,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 22:08:06,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:08:06,621 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)] === [2021-11-07 22:08:06,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:08:06,622 INFO L85 PathProgramCache]: Analyzing trace with hash 168111628, now seen corresponding path program 1 times [2021-11-07 22:08:06,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:08:06,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458215574] [2021-11-07 22:08:06,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:08:06,623 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:08:06,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:08:06,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:08:06,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 22:08:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:08:06,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:08:06,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:08:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:08:06,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:08:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:08:07,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:08:07,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458215574] [2021-11-07 22:08:07,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458215574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:08:07,077 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:08:07,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 22:08:07,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425230869] [2021-11-07 22:08:07,077 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:08:07,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 22:08:07,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:08:07,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 22:08:07,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:08:07,078 INFO L87 Difference]: Start difference. First operand 200 states and 261 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:07,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:08:07,183 INFO L93 Difference]: Finished difference Result 405 states and 530 transitions. [2021-11-07 22:08:07,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:08:07,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 [2021-11-07 22:08:07,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:08:07,185 INFO L225 Difference]: With dead ends: 405 [2021-11-07 22:08:07,185 INFO L226 Difference]: Without dead ends: 209 [2021-11-07 22:08:07,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.43ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:08:07,186 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 244 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.79ms IncrementalHoareTripleChecker+Time [2021-11-07 22:08:07,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 477 Invalid, 69 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [30 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 89.79ms Time] [2021-11-07 22:08:07,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-07 22:08:07,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 203. [2021-11-07 22:08:07,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 197 states have (on average 1.299492385786802) internal successors, (256), 202 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:07,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 256 transitions. [2021-11-07 22:08:07,193 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 256 transitions. Word has length 64 [2021-11-07 22:08:07,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:08:07,193 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 256 transitions. [2021-11-07 22:08:07,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:07,194 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 256 transitions. [2021-11-07 22:08:07,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 22:08:07,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:08:07,195 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] [2021-11-07 22:08:07,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 22:08:07,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:08:07,405 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)] === [2021-11-07 22:08:07,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:08:07,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1012352744, now seen corresponding path program 1 times [2021-11-07 22:08:07,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:08:07,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153784297] [2021-11-07 22:08:07,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:08:07,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:08:07,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:08:07,407 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:08:07,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 22:08:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:08:07,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:08:07,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:08:07,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:08:07,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:08:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:08:08,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:08:08,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153784297] [2021-11-07 22:08:08,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153784297] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:08:08,149 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:08:08,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 22:08:08,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505267641] [2021-11-07 22:08:08,149 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:08:08,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:08:08,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:08:08,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:08:08,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:08:08,150 INFO L87 Difference]: Start difference. First operand 203 states and 256 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) [2021-11-07 22:08:09,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:08:09,018 INFO L93 Difference]: Finished difference Result 533 states and 671 transitions. [2021-11-07 22:08:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:08:09,018 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 [2021-11-07 22:08:09,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:08:09,019 INFO L225 Difference]: With dead ends: 533 [2021-11-07 22:08:09,019 INFO L226 Difference]: Without dead ends: 334 [2021-11-07 22:08:09,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:08:09,021 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 128 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 814.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 854.68ms IncrementalHoareTripleChecker+Time [2021-11-07 22:08:09,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 532 Invalid, 36 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 854.68ms Time] [2021-11-07 22:08:09,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-11-07 22:08:09,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 306. [2021-11-07 22:08:09,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 300 states have (on average 1.2833333333333334) internal successors, (385), 305 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:09,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 385 transitions. [2021-11-07 22:08:09,029 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 385 transitions. Word has length 64 [2021-11-07 22:08:09,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:08:09,029 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 385 transitions. [2021-11-07 22:08:09,029 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) [2021-11-07 22:08:09,030 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 385 transitions. [2021-11-07 22:08:09,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 22:08:09,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:08:09,032 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] [2021-11-07 22:08:09,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 22:08:09,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:08:09,242 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)] === [2021-11-07 22:08:09,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:08:09,242 INFO L85 PathProgramCache]: Analyzing trace with hash -147792665, now seen corresponding path program 1 times [2021-11-07 22:08:09,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:08:09,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193681710] [2021-11-07 22:08:09,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:08:09,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:08:09,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:08:09,244 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:08:09,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 22:08:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:08:09,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:08:09,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:08:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:08:09,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:08:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:08:09,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:08:09,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193681710] [2021-11-07 22:08:09,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193681710] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:08:09,675 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:08:09,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 22:08:09,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97617060] [2021-11-07 22:08:09,675 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:08:09,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:08:09,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:08:09,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:08:09,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:08:09,677 INFO L87 Difference]: Start difference. First operand 306 states and 385 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:09,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:08:09,763 INFO L93 Difference]: Finished difference Result 570 states and 727 transitions. [2021-11-07 22:08:09,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:08:09,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 [2021-11-07 22:08:09,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:08:09,765 INFO L225 Difference]: With dead ends: 570 [2021-11-07 22:08:09,765 INFO L226 Difference]: Without dead ends: 309 [2021-11-07 22:08:09,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.71ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:08:09,767 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 0 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.95ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.15ms IncrementalHoareTripleChecker+Time [2021-11-07 22:08:09,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 724 Invalid, 20 Unknown, 0 Unchecked, 0.95ms Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 77.15ms Time] [2021-11-07 22:08:09,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-07 22:08:09,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-11-07 22:08:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 303 states have (on average 1.2805280528052805) internal successors, (388), 308 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:09,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 388 transitions. [2021-11-07 22:08:09,776 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 388 transitions. Word has length 71 [2021-11-07 22:08:09,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:08:09,777 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 388 transitions. [2021-11-07 22:08:09,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:09,778 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 388 transitions. [2021-11-07 22:08:09,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 22:08:09,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:08:09,782 INFO L514 BasicCegarLoop]: trace histogram [2, 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] [2021-11-07 22:08:09,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 22:08:09,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:08:09,998 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)] === [2021-11-07 22:08:09,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:08:09,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1065048653, now seen corresponding path program 1 times [2021-11-07 22:08:09,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:08:09,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206952741] [2021-11-07 22:08:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:08:09,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:08:09,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:08:10,000 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:08:10,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 22:08:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:08:10,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:08:10,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:08:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 22:08:10,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:08:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 22:08:10,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:08:10,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206952741] [2021-11-07 22:08:10,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206952741] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:08:10,536 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:08:10,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-07 22:08:10,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778588943] [2021-11-07 22:08:10,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:08:10,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 22:08:10,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:08:10,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 22:08:10,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 22:08:10,537 INFO L87 Difference]: Start difference. First operand 309 states and 388 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:10,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:08:10,796 INFO L93 Difference]: Finished difference Result 579 states and 739 transitions. [2021-11-07 22:08:10,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 22:08:10,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 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 74 [2021-11-07 22:08:10,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:08:10,798 INFO L225 Difference]: With dead ends: 579 [2021-11-07 22:08:10,798 INFO L226 Difference]: Without dead ends: 315 [2021-11-07 22:08:10,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 155.05ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-07 22:08:10,801 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 0 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.36ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 161.50ms IncrementalHoareTripleChecker+Time [2021-11-07 22:08:10,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 963 Invalid, 50 Unknown, 0 Unchecked, 1.36ms Time], IncrementalHoareTripleChecker [13 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 161.50ms Time] [2021-11-07 22:08:10,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-11-07 22:08:10,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2021-11-07 22:08:10,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 309 states have (on average 1.2750809061488673) internal successors, (394), 314 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:10,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 394 transitions. [2021-11-07 22:08:10,810 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 394 transitions. Word has length 74 [2021-11-07 22:08:10,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:08:10,811 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 394 transitions. [2021-11-07 22:08:10,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:10,812 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 394 transitions. [2021-11-07 22:08:10,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 22:08:10,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:08:10,814 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 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] [2021-11-07 22:08:10,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 22:08:11,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:08:11,024 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)] === [2021-11-07 22:08:11,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:08:11,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1820271245, now seen corresponding path program 2 times [2021-11-07 22:08:11,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:08:11,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933859664] [2021-11-07 22:08:11,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:08:11,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:08:11,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:08:11,026 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:08:11,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 22:08:11,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 22:08:11,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:08:11,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:08:11,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:08:11,245 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 [2021-11-07 22:08:11,256 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 [2021-11-07 22:08:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 22:08:11,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:08:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 22:08:11,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:08:11,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933859664] [2021-11-07 22:08:11,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933859664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:08:11,390 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:08:11,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 22:08:11,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009456692] [2021-11-07 22:08:11,391 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:08:11,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 22:08:11,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:08:11,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 22:08:11,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:08:11,392 INFO L87 Difference]: Start difference. First operand 315 states and 394 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:13,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 22:08:15,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:08:15,334 INFO L93 Difference]: Finished difference Result 490 states and 625 transitions. [2021-11-07 22:08:15,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 22:08:15,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 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 80 [2021-11-07 22:08:15,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:08:15,337 INFO L225 Difference]: With dead ends: 490 [2021-11-07 22:08:15,337 INFO L226 Difference]: Without dead ends: 465 [2021-11-07 22:08:15,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 35.67ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 22:08:15,338 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 207 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3655.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.28ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3877.53ms IncrementalHoareTripleChecker+Time [2021-11-07 22:08:15,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 830 Invalid, 238 Unknown, 0 Unchecked, 5.28ms Time], IncrementalHoareTripleChecker [6 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 3877.53ms Time] [2021-11-07 22:08:15,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-07 22:08:15,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 386. [2021-11-07 22:08:15,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 380 states have (on average 1.2894736842105263) internal successors, (490), 385 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 490 transitions. [2021-11-07 22:08:15,347 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 490 transitions. Word has length 80 [2021-11-07 22:08:15,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:08:15,347 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 490 transitions. [2021-11-07 22:08:15,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:15,347 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 490 transitions. [2021-11-07 22:08:15,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 22:08:15,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:08:15,348 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 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] [2021-11-07 22:08:15,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 22:08:15,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:08:15,556 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:08:15,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:08:15,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1224331210, now seen corresponding path program 1 times [2021-11-07 22:08:15,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:08:15,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936690984] [2021-11-07 22:08:15,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:08:15,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:08:15,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:08:15,558 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:08:15,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 22:08:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:08:15,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 22:08:15,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:08:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 22:08:16,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:08:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 22:08:16,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:08:16,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936690984] [2021-11-07 22:08:16,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936690984] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:08:16,674 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:08:16,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-07 22:08:16,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64008549] [2021-11-07 22:08:16,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:08:16,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 22:08:16,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:08:16,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 22:08:16,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-07 22:08:16,675 INFO L87 Difference]: Start difference. First operand 386 states and 490 transitions. Second operand has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:18,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:08:18,148 INFO L93 Difference]: Finished difference Result 739 states and 955 transitions. [2021-11-07 22:08:18,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 22:08:18,149 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-07 22:08:18,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:08:18,150 INFO L225 Difference]: With dead ends: 739 [2021-11-07 22:08:18,150 INFO L226 Difference]: Without dead ends: 398 [2021-11-07 22:08:18,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 878.35ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-11-07 22:08:18,152 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 0 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 884.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.18ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 950.64ms IncrementalHoareTripleChecker+Time [2021-11-07 22:08:18,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1919 Invalid, 162 Unknown, 0 Unchecked, 3.18ms Time], IncrementalHoareTripleChecker [45 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 950.64ms Time] [2021-11-07 22:08:18,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-07 22:08:18,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2021-11-07 22:08:18,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 392 states have (on average 1.280612244897959) internal successors, (502), 397 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:18,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 502 transitions. [2021-11-07 22:08:18,160 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 502 transitions. Word has length 112 [2021-11-07 22:08:18,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:08:18,161 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 502 transitions. [2021-11-07 22:08:18,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:18,161 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 502 transitions. [2021-11-07 22:08:18,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 22:08:18,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:08:18,166 INFO L514 BasicCegarLoop]: trace histogram [14, 7, 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] [2021-11-07 22:08:18,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 22:08:18,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:08:18,380 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)] === [2021-11-07 22:08:18,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:08:18,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2016870474, now seen corresponding path program 2 times [2021-11-07 22:08:18,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:08:18,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952689730] [2021-11-07 22:08:18,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:08:18,381 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:08:18,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:08:18,382 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:08:18,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 22:08:18,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 22:08:18,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:08:18,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:08:18,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:08:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-07 22:08:18,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:08:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-07 22:08:18,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:08:18,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952689730] [2021-11-07 22:08:18,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952689730] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:08:18,820 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:08:18,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 22:08:18,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086517507] [2021-11-07 22:08:18,820 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:08:18,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 22:08:18,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:08:18,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 22:08:18,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:08:18,821 INFO L87 Difference]: Start difference. First operand 398 states and 502 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:18,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:08:18,914 INFO L93 Difference]: Finished difference Result 645 states and 838 transitions. [2021-11-07 22:08:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:08:18,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-07 22:08:18,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:08:18,916 INFO L225 Difference]: With dead ends: 645 [2021-11-07 22:08:18,916 INFO L226 Difference]: Without dead ends: 410 [2021-11-07 22:08:18,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.90ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:08:18,917 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 249 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.14ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.70ms IncrementalHoareTripleChecker+Time [2021-11-07 22:08:18,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 547 Invalid, 74 Unknown, 0 Unchecked, 1.14ms Time], IncrementalHoareTripleChecker [37 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 73.70ms Time] [2021-11-07 22:08:18,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-07 22:08:18,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 407. [2021-11-07 22:08:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 401 states have (on average 1.2144638403990025) internal successors, (487), 406 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 487 transitions. [2021-11-07 22:08:18,926 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 487 transitions. Word has length 124 [2021-11-07 22:08:18,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:08:18,927 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 487 transitions. [2021-11-07 22:08:18,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:18,927 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 487 transitions. [2021-11-07 22:08:18,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 22:08:18,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:08:18,928 INFO L514 BasicCegarLoop]: trace histogram [14, 7, 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] [2021-11-07 22:08:18,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 22:08:19,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:08:19,136 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)] === [2021-11-07 22:08:19,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:08:19,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1333208362, now seen corresponding path program 1 times [2021-11-07 22:08:19,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:08:19,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440096215] [2021-11-07 22:08:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:08:19,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:08:19,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:08:19,138 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:08:19,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 22:08:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:08:19,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 22:08:19,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:08:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 105 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 22:08:19,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:08:20,992 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 105 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 22:08:20,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:08:20,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440096215] [2021-11-07 22:08:20,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440096215] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:08:20,993 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:08:20,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-11-07 22:08:20,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444371538] [2021-11-07 22:08:20,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:08:20,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 22:08:20,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:08:20,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 22:08:20,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-11-07 22:08:20,994 INFO L87 Difference]: Start difference. First operand 407 states and 487 transitions. Second operand has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:30,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:08:30,840 INFO L93 Difference]: Finished difference Result 793 states and 973 transitions. [2021-11-07 22:08:30,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 22:08:30,841 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-07 22:08:30,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:08:30,843 INFO L225 Difference]: With dead ends: 793 [2021-11-07 22:08:30,843 INFO L226 Difference]: Without dead ends: 431 [2021-11-07 22:08:30,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 4406.55ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 22:08:30,844 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 0 mSDsluCounter, 3648 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6274.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3883 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.34ms SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6491.40ms IncrementalHoareTripleChecker+Time [2021-11-07 22:08:30,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3883 Invalid, 533 Unknown, 0 Unchecked, 7.34ms Time], IncrementalHoareTripleChecker [157 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 6491.40ms Time] [2021-11-07 22:08:30,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-07 22:08:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2021-11-07 22:08:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 425 states have (on average 1.2023529411764706) internal successors, (511), 430 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:30,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 511 transitions. [2021-11-07 22:08:30,855 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 511 transitions. Word has length 124 [2021-11-07 22:08:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:08:30,855 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 511 transitions. [2021-11-07 22:08:30,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:30,855 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 511 transitions. [2021-11-07 22:08:30,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 22:08:30,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:08:30,856 INFO L514 BasicCegarLoop]: trace histogram [30, 15, 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] [2021-11-07 22:08:30,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 22:08:31,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:08:31,068 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)] === [2021-11-07 22:08:31,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:08:31,069 INFO L85 PathProgramCache]: Analyzing trace with hash -2039593942, now seen corresponding path program 2 times [2021-11-07 22:08:31,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:08:31,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090852055] [2021-11-07 22:08:31,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:08:31,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:08:31,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:08:31,070 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:08:31,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 22:08:31,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 22:08:31,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:08:31,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:08:31,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:08:31,381 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2021-11-07 22:08:31,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:08:31,577 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2021-11-07 22:08:31,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:08:31,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090852055] [2021-11-07 22:08:31,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090852055] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:08:31,578 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:08:31,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [] total 5 [2021-11-07 22:08:31,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037782141] [2021-11-07 22:08:31,578 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:08:31,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 22:08:31,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:08:31,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 22:08:31,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:08:31,580 INFO L87 Difference]: Start difference. First operand 431 states and 511 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:31,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:08:31,656 INFO L93 Difference]: Finished difference Result 653 states and 785 transitions. [2021-11-07 22:08:31,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:08:31,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-07 22:08:31,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:08:31,658 INFO L225 Difference]: With dead ends: 653 [2021-11-07 22:08:31,658 INFO L226 Difference]: Without dead ends: 434 [2021-11-07 22:08:31,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.66ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:08:31,659 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 3 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.92ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.16ms IncrementalHoareTripleChecker+Time [2021-11-07 22:08:31,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 647 Invalid, 64 Unknown, 0 Unchecked, 0.92ms Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 66.16ms Time] [2021-11-07 22:08:31,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-07 22:08:31,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 431. [2021-11-07 22:08:31,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 425 states have (on average 1.1811764705882353) internal successors, (502), 430 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:31,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 502 transitions. [2021-11-07 22:08:31,671 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 502 transitions. Word has length 148 [2021-11-07 22:08:31,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:08:31,671 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 502 transitions. [2021-11-07 22:08:31,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:08:31,672 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 502 transitions. [2021-11-07 22:08:31,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 22:08:31,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:08:31,673 INFO L514 BasicCegarLoop]: trace histogram [30, 15, 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] [2021-11-07 22:08:31,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 22:08:31,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:08:31,881 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)] === [2021-11-07 22:08:31,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:08:31,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1997207916, now seen corresponding path program 1 times [2021-11-07 22:08:31,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:08:31,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787059456] [2021-11-07 22:08:31,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:08:31,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:08:31,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:08:31,883 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:08:31,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 22:08:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:08:32,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 22:08:32,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:08:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 2 proven. 465 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-07 22:08:33,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:08:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 2 proven. 465 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-07 22:08:36,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:08:36,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787059456] [2021-11-07 22:08:36,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787059456] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:08:36,544 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:08:36,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2021-11-07 22:08:36,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076062313] [2021-11-07 22:08:36,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:08:36,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-07 22:08:36,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:08:36,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-07 22:08:36,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=933, Invalid=3099, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 22:08:36,546 INFO L87 Difference]: Start difference. First operand 431 states and 502 transitions. Second operand has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:09:50,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:09:50,895 INFO L93 Difference]: Finished difference Result 847 states and 1015 transitions. [2021-11-07 22:09:50,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-07 22:09:50,897 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 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 148 [2021-11-07 22:09:50,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:09:50,899 INFO L225 Difference]: With dead ends: 847 [2021-11-07 22:09:50,899 INFO L226 Difference]: Without dead ends: 461 [2021-11-07 22:09:50,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 30844.34ms TimeCoverageRelationStatistics Valid=2700, Invalid=6042, Unknown=0, NotChecked=0, Total=8742 [2021-11-07 22:09:50,901 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 0 mSDsluCounter, 7980 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46127.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8215 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.15ms SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46947.53ms IncrementalHoareTripleChecker+Time [2021-11-07 22:09:50,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8215 Invalid, 1698 Unknown, 0 Unchecked, 17.15ms Time], IncrementalHoareTripleChecker [555 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 46947.53ms Time] [2021-11-07 22:09:50,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-07 22:09:50,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2021-11-07 22:09:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 455 states have (on average 1.1692307692307693) internal successors, (532), 460 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:09:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 532 transitions. [2021-11-07 22:09:50,921 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 532 transitions. Word has length 148 [2021-11-07 22:09:50,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:09:50,921 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 532 transitions. [2021-11-07 22:09:50,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:09:50,922 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 532 transitions. [2021-11-07 22:09:50,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-07 22:09:50,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:09:50,923 INFO L514 BasicCegarLoop]: trace histogram [44, 31, 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] [2021-11-07 22:09:50,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 22:09:51,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:09:51,139 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)] === [2021-11-07 22:09:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:09:51,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1100843980, now seen corresponding path program 2 times [2021-11-07 22:09:51,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:09:51,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567777515] [2021-11-07 22:09:51,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:09:51,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:09:51,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:09:51,141 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:09:51,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 22:09:51,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 22:09:51,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:09:51,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-07 22:09:51,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:09:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 496 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 22:09:53,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:09:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 496 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 22:09:57,385 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:09:57,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567777515] [2021-11-07 22:09:57,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567777515] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:09:57,386 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:09:57,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-07 22:09:57,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265718747] [2021-11-07 22:09:57,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:09:57,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-07 22:09:57,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:09:57,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-07 22:09:57,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=3137, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 22:09:57,388 INFO L87 Difference]: Start difference. First operand 461 states and 532 transitions. Second operand has 66 states, 66 states have (on average 2.5454545454545454) internal successors, (168), 66 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:11:21,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:11:21,490 INFO L93 Difference]: Finished difference Result 910 states and 1081 transitions. [2021-11-07 22:11:21,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-07 22:11:21,496 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.5454545454545454) internal successors, (168), 66 states have internal predecessors, (168), 0 states have call successors, (0), 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 178 [2021-11-07 22:11:21,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:11:21,497 INFO L225 Difference]: With dead ends: 910 [2021-11-07 22:11:21,497 INFO L226 Difference]: Without dead ends: 494 [2021-11-07 22:11:21,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 36225.61ms TimeCoverageRelationStatistics Valid=3199, Invalid=6113, Unknown=0, NotChecked=0, Total=9312 [2021-11-07 22:11:21,500 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 0 mSDsluCounter, 7296 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51327.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7531 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.44ms SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52379.82ms IncrementalHoareTripleChecker+Time [2021-11-07 22:11:21,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7531 Invalid, 1930 Unknown, 0 Unchecked, 17.44ms Time], IncrementalHoareTripleChecker [591 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 52379.82ms Time] [2021-11-07 22:11:21,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-11-07 22:11:21,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 494. [2021-11-07 22:11:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 488 states have (on average 1.1577868852459017) internal successors, (565), 493 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:11:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 565 transitions. [2021-11-07 22:11:21,517 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 565 transitions. Word has length 178 [2021-11-07 22:11:21,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:11:21,518 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 565 transitions. [2021-11-07 22:11:21,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.5454545454545454) internal successors, (168), 66 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:11:21,518 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 565 transitions. [2021-11-07 22:11:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-07 22:11:21,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:11:21,519 INFO L514 BasicCegarLoop]: trace histogram [64, 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] [2021-11-07 22:11:21,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 22:11:21,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:11:21,735 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)] === [2021-11-07 22:11:21,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:11:21,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1145284768, now seen corresponding path program 3 times [2021-11-07 22:11:21,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:11:21,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687006651] [2021-11-07 22:11:21,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 22:11:21,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:11:21,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:11:21,738 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:11:21,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 22:11:21,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 22:11:21,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:11:21,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:11:21,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:11:22,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3070 trivial. 0 not checked. [2021-11-07 22:11:22,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:11:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3070 trivial. 0 not checked. [2021-11-07 22:11:23,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:11:23,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687006651] [2021-11-07 22:11:23,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687006651] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:11:23,024 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:11:23,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 22:11:23,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884371928] [2021-11-07 22:11:23,025 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:11:23,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:11:23,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:11:23,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:11:23,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:11:23,026 INFO L87 Difference]: Start difference. First operand 494 states and 565 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) [2021-11-07 22:11:25,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 22:11:25,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:11:25,933 INFO L93 Difference]: Finished difference Result 1070 states and 1232 transitions. [2021-11-07 22:11:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 22:11:25,934 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 211 [2021-11-07 22:11:25,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:11:25,936 INFO L225 Difference]: With dead ends: 1070 [2021-11-07 22:11:25,936 INFO L226 Difference]: Without dead ends: 621 [2021-11-07 22:11:25,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.97ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:11:25,937 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 476 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2753.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.51ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2867.73ms IncrementalHoareTripleChecker+Time [2021-11-07 22:11:25,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 441 Invalid, 86 Unknown, 0 Unchecked, 1.51ms Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 1 Unknown, 0 Unchecked, 2867.73ms Time] [2021-11-07 22:11:25,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-11-07 22:11:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 569. [2021-11-07 22:11:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 563 states have (on average 1.1580817051509769) internal successors, (652), 568 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:11:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 652 transitions. [2021-11-07 22:11:25,955 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 652 transitions. Word has length 211 [2021-11-07 22:11:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:11:25,956 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 652 transitions. [2021-11-07 22:11:25,956 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) [2021-11-07 22:11:25,956 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 652 transitions. [2021-11-07 22:11:25,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-07 22:11:25,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:11:25,958 INFO L514 BasicCegarLoop]: trace histogram [64, 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] [2021-11-07 22:11:25,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 22:11:26,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:11:26,169 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)] === [2021-11-07 22:11:26,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:11:26,169 INFO L85 PathProgramCache]: Analyzing trace with hash 670931834, now seen corresponding path program 1 times [2021-11-07 22:11:26,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:11:26,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136969152] [2021-11-07 22:11:26,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:11:26,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:11:26,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:11:26,171 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:11:26,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 22:11:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:11:27,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-07 22:11:27,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:11:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 2080 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 22:11:29,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:11:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 2080 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 22:11:43,001 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:11:43,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136969152] [2021-11-07 22:11:43,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136969152] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:11:43,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:11:43,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 132 [2021-11-07 22:11:43,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320375785] [2021-11-07 22:11:43,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:11:43,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2021-11-07 22:11:43,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:11:43,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-11-07 22:11:43,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4486, Invalid=12806, Unknown=0, NotChecked=0, Total=17292 [2021-11-07 22:11:43,006 INFO L87 Difference]: Start difference. First operand 569 states and 652 transitions. Second operand has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:15:31,386 WARN L227 SmtUtils]: Spent 6.71s on a formula simplification that was a NOOP. DAG size: 196 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 22:15:40,018 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 193 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 22:15:48,544 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 190 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 22:15:56,378 WARN L227 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 187 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 22:16:12,145 WARN L227 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 181 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 22:16:27,958 WARN L227 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 175 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 22:16:43,903 WARN L227 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 169 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 22:17:55,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:17:55,770 INFO L93 Difference]: Finished difference Result 1045 states and 1271 transitions. [2021-11-07 22:17:55,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-11-07 22:17:55,771 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 0 states have call successors, (0), 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 218 [2021-11-07 22:17:55,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:17:55,777 INFO L225 Difference]: With dead ends: 1045 [2021-11-07 22:17:55,777 INFO L226 Difference]: Without dead ends: 635 [2021-11-07 22:17:55,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 259972.69ms TimeCoverageRelationStatistics Valid=12934, Invalid=25286, Unknown=0, NotChecked=0, Total=38220 [2021-11-07 22:17:55,785 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 0 mSDsluCounter, 15276 mSDsCounter, 0 mSdLazyCounter, 4781 mSolverCounterSat, 1119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 123992.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15511 SdHoareTripleChecker+Invalid, 5900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.02ms SdHoareTripleChecker+Time, 1119 IncrementalHoareTripleChecker+Valid, 4781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127045.64ms IncrementalHoareTripleChecker+Time [2021-11-07 22:17:55,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15511 Invalid, 5900 Unknown, 0 Unchecked, 44.02ms Time], IncrementalHoareTripleChecker [1119 Valid, 4781 Invalid, 0 Unknown, 0 Unchecked, 127045.64ms Time] [2021-11-07 22:17:55,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-11-07 22:17:55,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2021-11-07 22:17:55,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 629 states have (on average 1.1414944356120826) internal successors, (718), 634 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:17:55,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 718 transitions. [2021-11-07 22:17:55,823 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 718 transitions. Word has length 218 [2021-11-07 22:17:55,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:17:55,824 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 718 transitions. [2021-11-07 22:17:55,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:17:55,824 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 718 transitions. [2021-11-07 22:17:55,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-07 22:17:55,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:17:55,827 INFO L514 BasicCegarLoop]: trace histogram [130, 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] [2021-11-07 22:17:55,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 22:17:56,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:17:56,039 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)] === [2021-11-07 22:17:56,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:17:56,040 INFO L85 PathProgramCache]: Analyzing trace with hash 249759226, now seen corresponding path program 2 times [2021-11-07 22:17:56,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:17:56,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349425685] [2021-11-07 22:17:56,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:17:56,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:17:56,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:17:56,052 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:17:56,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 22:17:57,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 22:17:57,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:17:57,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1136 conjuncts, 133 conjunts are in the unsatisfiable core [2021-11-07 22:17:57,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:18:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 9507 backedges. 2 proven. 8515 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 22:18:09,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:18:59,921 INFO L134 CoverageAnalysis]: Checked inductivity of 9507 backedges. 2 proven. 8515 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 22:18:59,922 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:18:59,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349425685] [2021-11-07 22:18:59,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349425685] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:18:59,922 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:18:59,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 264 [2021-11-07 22:18:59,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213861415] [2021-11-07 22:18:59,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:18:59,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 264 states [2021-11-07 22:18:59,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:18:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2021-11-07 22:18:59,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17686, Invalid=51746, Unknown=0, NotChecked=0, Total=69432 [2021-11-07 22:18:59,931 INFO L87 Difference]: Start difference. First operand 635 states and 718 transitions. Second operand has 264 states, 264 states have (on average 1.4128787878787878) internal successors, (373), 264 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15