./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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_test10-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 05:59:17,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 05:59:17,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 05:59:17,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 05:59:17,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 05:59:17,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 05:59:17,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 05:59:17,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 05:59:17,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 05:59:17,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 05:59:17,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 05:59:17,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 05:59:17,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 05:59:17,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 05:59:17,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 05:59:17,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 05:59:17,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 05:59:17,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 05:59:17,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 05:59:17,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 05:59:17,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 05:59:17,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 05:59:17,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 05:59:17,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 05:59:17,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 05:59:17,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 05:59:17,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 05:59:17,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 05:59:17,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 05:59:17,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 05:59:17,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 05:59:17,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 05:59:17,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 05:59:17,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 05:59:17,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 05:59:17,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 05:59:17,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 05:59:17,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 05:59:17,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 05:59:17,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 05:59:17,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 05:59:17,609 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 05:59:17,632 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 05:59:17,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 05:59:17,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 05:59:17,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 05:59:17,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 05:59:17,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 05:59:17,636 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 05:59:17,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 05:59:17,636 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 05:59:17,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 05:59:17,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 05:59:17,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 05:59:17,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 05:59:17,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 05:59:17,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 05:59:17,638 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 05:59:17,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 05:59:17,638 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 05:59:17,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 05:59:17,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 05:59:17,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 05:59:17,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 05:59:17,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 05:59:17,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 05:59:17,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 05:59:17,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 05:59:17,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 05:59:17,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 05:59:17,641 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 05:59:17,641 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 05:59:17,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 05:59:17,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 05:59:17,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 [2021-11-23 05:59:17,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 05:59:17,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 05:59:17,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 05:59:17,881 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 05:59:17,881 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 05:59:17,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2021-11-23 05:59:17,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d705d0963/d73b5f666c804eb6a23e81ee71c562f4/FLAGa8147590e [2021-11-23 05:59:18,426 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 05:59:18,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2021-11-23 05:59:18,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d705d0963/d73b5f666c804eb6a23e81ee71c562f4/FLAGa8147590e [2021-11-23 05:59:18,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d705d0963/d73b5f666c804eb6a23e81ee71c562f4 [2021-11-23 05:59:18,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 05:59:18,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 05:59:18,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 05:59:18,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 05:59:18,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 05:59:18,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:59:18" (1/1) ... [2021-11-23 05:59:18,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11089689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:59:18, skipping insertion in model container [2021-11-23 05:59:18,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:59:18" (1/1) ... [2021-11-23 05:59:18,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 05:59:19,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 05:59:19,373 WARN L230 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_test10-2.i[33022,33035] [2021-11-23 05:59:19,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 05:59:19,562 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 05:59:19,600 WARN L230 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_test10-2.i[33022,33035] [2021-11-23 05:59:19,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 05:59:19,809 INFO L208 MainTranslator]: Completed translation [2021-11-23 05:59:19,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:59:19 WrapperNode [2021-11-23 05:59:19,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 05:59:19,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 05:59:19,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 05:59:19,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 05:59:19,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:59:19" (1/1) ... [2021-11-23 05:59:19,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:59:19" (1/1) ... [2021-11-23 05:59:19,939 INFO L137 Inliner]: procedures = 177, calls = 575, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 2500 [2021-11-23 05:59:19,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 05:59:19,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 05:59:19,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 05:59:19,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 05:59:19,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:59:19" (1/1) ... [2021-11-23 05:59:19,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:59:19" (1/1) ... [2021-11-23 05:59:19,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:59:19" (1/1) ... [2021-11-23 05:59:19,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:59:19" (1/1) ... [2021-11-23 05:59:20,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:59:19" (1/1) ... [2021-11-23 05:59:20,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:59:19" (1/1) ... [2021-11-23 05:59:20,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:59:19" (1/1) ... [2021-11-23 05:59:20,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 05:59:20,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 05:59:20,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 05:59:20,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 05:59:20,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:59:19" (1/1) ... [2021-11-23 05:59:20,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 05:59:20,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:20,121 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) [2021-11-23 05:59:20,142 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 [2021-11-23 05:59:20,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 05:59:20,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 05:59:20,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 05:59:20,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 05:59:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 05:59:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 05:59:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 05:59:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 05:59:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 05:59:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 05:59:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 05:59:20,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 05:59:20,499 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 05:59:20,500 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 05:59:22,469 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 05:59:22,486 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 05:59:22,486 INFO L301 CfgBuilder]: Removed 160 assume(true) statements. [2021-11-23 05:59:22,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:59:22 BoogieIcfgContainer [2021-11-23 05:59:22,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 05:59:22,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 05:59:22,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 05:59:22,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 05:59:22,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:59:18" (1/3) ... [2021-11-23 05:59:22,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304ab26a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:59:22, skipping insertion in model container [2021-11-23 05:59:22,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:59:19" (2/3) ... [2021-11-23 05:59:22,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304ab26a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:59:22, skipping insertion in model container [2021-11-23 05:59:22,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:59:22" (3/3) ... [2021-11-23 05:59:22,498 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-2.i [2021-11-23 05:59:22,502 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 05:59:22,502 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-23 05:59:22,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 05:59:22,544 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 [2021-11-23 05:59:22,544 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-23 05:59:22,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 515 states, 498 states have (on average 1.7188755020080322) internal successors, (856), 514 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:22,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 05:59:22,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:22,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:22,574 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:22,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:22,578 INFO L85 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2021-11-23 05:59:22,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:22,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292334096] [2021-11-23 05:59:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:22,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 05:59:22,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:22,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292334096] [2021-11-23 05:59:22,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292334096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 05:59:22,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 05:59:22,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 05:59:22,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173393617] [2021-11-23 05:59:22,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 05:59:22,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 05:59:22,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:22,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 05:59:22,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 05:59:22,762 INFO L87 Difference]: Start difference. First operand has 515 states, 498 states have (on average 1.7188755020080322) internal successors, (856), 514 states have internal predecessors, (856), 0 states have call successors, (0), 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) [2021-11-23 05:59:22,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:22,813 INFO L93 Difference]: Finished difference Result 1028 states and 1710 transitions. [2021-11-23 05:59:22,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 05:59:22,815 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 [2021-11-23 05:59:22,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:22,826 INFO L225 Difference]: With dead ends: 1028 [2021-11-23 05:59:22,826 INFO L226 Difference]: Without dead ends: 477 [2021-11-23 05:59:22,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 05:59:22,833 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:22,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 05:59:22,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-23 05:59:22,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2021-11-23 05:59:22,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 461 states have (on average 1.3449023861171367) internal successors, (620), 476 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:22,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 620 transitions. [2021-11-23 05:59:22,888 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 620 transitions. Word has length 9 [2021-11-23 05:59:22,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:22,888 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 620 transitions. [2021-11-23 05:59:22,889 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) [2021-11-23 05:59:22,889 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 620 transitions. [2021-11-23 05:59:22,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 05:59:22,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:22,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:22,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 05:59:22,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:22,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2021-11-23 05:59:22,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:22,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935971940] [2021-11-23 05:59:22,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:22,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 05:59:22,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:22,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935971940] [2021-11-23 05:59:22,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935971940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 05:59:22,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 05:59:22,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 05:59:22,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16480315] [2021-11-23 05:59:22,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 05:59:22,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 05:59:22,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:22,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 05:59:22,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 05:59:22,982 INFO L87 Difference]: Start difference. First operand 477 states and 620 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:23,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:23,504 INFO L93 Difference]: Finished difference Result 855 states and 1111 transitions. [2021-11-23 05:59:23,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 05:59:23,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-23 05:59:23,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:23,508 INFO L225 Difference]: With dead ends: 855 [2021-11-23 05:59:23,508 INFO L226 Difference]: Without dead ends: 552 [2021-11-23 05:59:23,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 05:59:23,510 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 96 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:23,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1639 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 05:59:23,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-11-23 05:59:23,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 479. [2021-11-23 05:59:23,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 463 states have (on average 1.34341252699784) internal successors, (622), 478 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:23,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 622 transitions. [2021-11-23 05:59:23,530 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 622 transitions. Word has length 44 [2021-11-23 05:59:23,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:23,531 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 622 transitions. [2021-11-23 05:59:23,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:23,531 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 622 transitions. [2021-11-23 05:59:23,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 05:59:23,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:23,534 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:23,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 05:59:23,535 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:23,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:23,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1325558428, now seen corresponding path program 1 times [2021-11-23 05:59:23,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:23,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024827776] [2021-11-23 05:59:23,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:23,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:23,654 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:23,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885124495] [2021-11-23 05:59:23,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:23,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:23,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:23,660 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) [2021-11-23 05:59:23,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 05:59:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:24,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 05:59:24,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 05:59:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 05:59:24,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 05:59:24,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:24,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024827776] [2021-11-23 05:59:24,459 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 05:59:24,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885124495] [2021-11-23 05:59:24,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885124495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 05:59:24,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 05:59:24,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 05:59:24,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338623926] [2021-11-23 05:59:24,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 05:59:24,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 05:59:24,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:24,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 05:59:24,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 05:59:24,461 INFO L87 Difference]: Start difference. First operand 479 states and 622 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:24,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:24,522 INFO L93 Difference]: Finished difference Result 975 states and 1271 transitions. [2021-11-23 05:59:24,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 05:59:24,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-23 05:59:24,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:24,525 INFO L225 Difference]: With dead ends: 975 [2021-11-23 05:59:24,525 INFO L226 Difference]: Without dead ends: 500 [2021-11-23 05:59:24,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 05:59:24,527 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 9 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:24,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1185 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 05:59:24,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-23 05:59:24,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 499. [2021-11-23 05:59:24,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 483 states have (on average 1.329192546583851) internal successors, (642), 498 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:24,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 642 transitions. [2021-11-23 05:59:24,561 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 642 transitions. Word has length 97 [2021-11-23 05:59:24,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:24,562 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 642 transitions. [2021-11-23 05:59:24,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:24,562 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 642 transitions. [2021-11-23 05:59:24,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 05:59:24,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:24,571 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:24,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 05:59:24,791 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 [2021-11-23 05:59:24,792 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:24,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:24,793 INFO L85 PathProgramCache]: Analyzing trace with hash 948433376, now seen corresponding path program 1 times [2021-11-23 05:59:24,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:24,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292183778] [2021-11-23 05:59:24,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:24,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:24,893 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:24,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [803465017] [2021-11-23 05:59:24,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:24,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:24,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:24,895 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) [2021-11-23 05:59:24,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 05:59:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:25,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 05:59:25,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 05:59:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 05:59:25,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 05:59:25,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:25,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292183778] [2021-11-23 05:59:25,715 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 05:59:25,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803465017] [2021-11-23 05:59:25,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803465017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 05:59:25,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 05:59:25,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 05:59:25,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249231717] [2021-11-23 05:59:25,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 05:59:25,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 05:59:25,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:25,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 05:59:25,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 05:59:25,717 INFO L87 Difference]: Start difference. First operand 499 states and 642 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:25,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:25,795 INFO L93 Difference]: Finished difference Result 811 states and 1048 transitions. [2021-11-23 05:59:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 05:59:25,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-23 05:59:25,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:25,798 INFO L225 Difference]: With dead ends: 811 [2021-11-23 05:59:25,798 INFO L226 Difference]: Without dead ends: 520 [2021-11-23 05:59:25,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 05:59:25,800 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 9 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:25,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1185 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 05:59:25,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-11-23 05:59:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 519. [2021-11-23 05:59:25,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 503 states have (on average 1.31610337972167) internal successors, (662), 518 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 662 transitions. [2021-11-23 05:59:25,810 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 662 transitions. Word has length 97 [2021-11-23 05:59:25,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:25,811 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 662 transitions. [2021-11-23 05:59:25,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:25,811 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 662 transitions. [2021-11-23 05:59:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 05:59:25,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:25,812 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:25,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 05:59:26,039 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 [2021-11-23 05:59:26,040 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:26,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:26,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1352389214, now seen corresponding path program 1 times [2021-11-23 05:59:26,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:26,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878200726] [2021-11-23 05:59:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:26,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:26,122 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:26,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953776037] [2021-11-23 05:59:26,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:26,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:26,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:26,124 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) [2021-11-23 05:59:26,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 05:59:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:26,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1666 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 05:59:26,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 05:59:26,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 05:59:26,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 05:59:26,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:26,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878200726] [2021-11-23 05:59:26,965 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 05:59:26,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953776037] [2021-11-23 05:59:26,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953776037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 05:59:26,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 05:59:26,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 05:59:26,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007893058] [2021-11-23 05:59:26,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 05:59:26,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 05:59:26,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:26,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 05:59:26,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 05:59:26,967 INFO L87 Difference]: Start difference. First operand 519 states and 662 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:27,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:27,040 INFO L93 Difference]: Finished difference Result 1110 states and 1424 transitions. [2021-11-23 05:59:27,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 05:59:27,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-23 05:59:27,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:27,043 INFO L225 Difference]: With dead ends: 1110 [2021-11-23 05:59:27,043 INFO L226 Difference]: Without dead ends: 595 [2021-11-23 05:59:27,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 05:59:27,045 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 608 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:27,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1532 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 05:59:27,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-11-23 05:59:27,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 505. [2021-11-23 05:59:27,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 489 states have (on average 1.3108384458077709) internal successors, (641), 504 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:27,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 641 transitions. [2021-11-23 05:59:27,056 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 641 transitions. Word has length 97 [2021-11-23 05:59:27,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:27,056 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 641 transitions. [2021-11-23 05:59:27,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:27,056 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 641 transitions. [2021-11-23 05:59:27,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 05:59:27,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:27,057 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:27,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 05:59:27,275 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 [2021-11-23 05:59:27,276 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:27,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:27,276 INFO L85 PathProgramCache]: Analyzing trace with hash 881478960, now seen corresponding path program 1 times [2021-11-23 05:59:27,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:27,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250047629] [2021-11-23 05:59:27,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:27,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:27,350 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:27,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293200983] [2021-11-23 05:59:27,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:27,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:27,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:27,352 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) [2021-11-23 05:59:27,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 05:59:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:28,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 05:59:28,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 05:59:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 05:59:28,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 05:59:28,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:28,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250047629] [2021-11-23 05:59:28,255 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 05:59:28,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293200983] [2021-11-23 05:59:28,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293200983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 05:59:28,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 05:59:28,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 05:59:28,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443280715] [2021-11-23 05:59:28,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 05:59:28,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 05:59:28,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:28,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 05:59:28,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 05:59:28,258 INFO L87 Difference]: Start difference. First operand 505 states and 641 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:28,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:28,321 INFO L93 Difference]: Finished difference Result 785 states and 996 transitions. [2021-11-23 05:59:28,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 05:59:28,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-23 05:59:28,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:28,323 INFO L225 Difference]: With dead ends: 785 [2021-11-23 05:59:28,323 INFO L226 Difference]: Without dead ends: 492 [2021-11-23 05:59:28,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 05:59:28,325 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 377 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:28,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 1386 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 05:59:28,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-11-23 05:59:28,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2021-11-23 05:59:28,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 475 states have (on average 1.305263157894737) internal successors, (620), 490 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:28,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 620 transitions. [2021-11-23 05:59:28,335 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 620 transitions. Word has length 97 [2021-11-23 05:59:28,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:28,336 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 620 transitions. [2021-11-23 05:59:28,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:28,336 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 620 transitions. [2021-11-23 05:59:28,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 05:59:28,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:28,346 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:28,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 05:59:28,563 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 [2021-11-23 05:59:28,564 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:28,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:28,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2021-11-23 05:59:28,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:28,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723896130] [2021-11-23 05:59:28,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:28,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:28,654 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:28,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918953627] [2021-11-23 05:59:28,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:28,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:28,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:28,663 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) [2021-11-23 05:59:28,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 05:59:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:29,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 05:59:29,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 05:59:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 05:59:29,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 05:59:29,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:29,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723896130] [2021-11-23 05:59:29,693 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 05:59:29,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918953627] [2021-11-23 05:59:29,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918953627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 05:59:29,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 05:59:29,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 05:59:29,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935278572] [2021-11-23 05:59:29,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 05:59:29,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 05:59:29,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:29,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 05:59:29,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 05:59:29,697 INFO L87 Difference]: Start difference. First operand 491 states and 620 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:29,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:29,770 INFO L93 Difference]: Finished difference Result 1263 states and 1594 transitions. [2021-11-23 05:59:29,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 05:59:29,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-23 05:59:29,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:29,774 INFO L225 Difference]: With dead ends: 1263 [2021-11-23 05:59:29,774 INFO L226 Difference]: Without dead ends: 776 [2021-11-23 05:59:29,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 05:59:29,775 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 325 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:29,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 1183 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 05:59:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-11-23 05:59:29,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 741. [2021-11-23 05:59:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 725 states have (on average 1.3103448275862069) internal successors, (950), 740 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:29,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 950 transitions. [2021-11-23 05:59:29,793 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 950 transitions. Word has length 97 [2021-11-23 05:59:29,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:29,793 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 950 transitions. [2021-11-23 05:59:29,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:29,794 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 950 transitions. [2021-11-23 05:59:29,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-23 05:59:29,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:29,795 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:29,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 05:59:30,015 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 [2021-11-23 05:59:30,016 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:30,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:30,016 INFO L85 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2021-11-23 05:59:30,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:30,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051874115] [2021-11-23 05:59:30,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:30,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:30,053 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:30,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35645888] [2021-11-23 05:59:30,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:30,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:30,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:30,055 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) [2021-11-23 05:59:30,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 05:59:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:30,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 05:59:30,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 05:59:30,653 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 [2021-11-23 05:59:30,657 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 15 treesize of output 11 [2021-11-23 05:59:30,693 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 05:59:30,694 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 11 treesize of output 11 [2021-11-23 05:59:30,726 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 34 treesize of output 26 [2021-11-23 05:59:30,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 26 treesize of output 24 [2021-11-23 05:59:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 05:59:30,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 05:59:30,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:30,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051874115] [2021-11-23 05:59:30,861 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 05:59:30,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35645888] [2021-11-23 05:59:30,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35645888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 05:59:30,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 05:59:30,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 05:59:30,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854432142] [2021-11-23 05:59:30,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 05:59:30,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 05:59:30,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:30,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 05:59:30,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 05:59:30,863 INFO L87 Difference]: Start difference. First operand 741 states and 950 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:31,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:31,660 INFO L93 Difference]: Finished difference Result 1394 states and 1785 transitions. [2021-11-23 05:59:31,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 05:59:31,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-23 05:59:31,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:31,677 INFO L225 Difference]: With dead ends: 1394 [2021-11-23 05:59:31,677 INFO L226 Difference]: Without dead ends: 743 [2021-11-23 05:59:31,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 05:59:31,678 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 97 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:31,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 2061 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 05:59:31,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-11-23 05:59:31,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 741. [2021-11-23 05:59:31,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 725 states have (on average 1.3089655172413792) internal successors, (949), 740 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 949 transitions. [2021-11-23 05:59:31,696 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 949 transitions. Word has length 104 [2021-11-23 05:59:31,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:31,696 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 949 transitions. [2021-11-23 05:59:31,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:31,697 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 949 transitions. [2021-11-23 05:59:31,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 05:59:31,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:31,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:31,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 05:59:31,923 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 [2021-11-23 05:59:31,923 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:31,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:31,924 INFO L85 PathProgramCache]: Analyzing trace with hash -560944154, now seen corresponding path program 1 times [2021-11-23 05:59:31,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:31,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017326163] [2021-11-23 05:59:31,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:31,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:32,015 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:32,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090602204] [2021-11-23 05:59:32,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:32,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:32,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:32,017 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) [2021-11-23 05:59:32,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 05:59:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:32,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 2193 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 05:59:32,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 05:59:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 05:59:33,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 05:59:33,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:33,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017326163] [2021-11-23 05:59:33,109 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 05:59:33,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090602204] [2021-11-23 05:59:33,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090602204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 05:59:33,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 05:59:33,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 05:59:33,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169750180] [2021-11-23 05:59:33,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 05:59:33,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 05:59:33,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:33,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 05:59:33,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 05:59:33,113 INFO L87 Difference]: Start difference. First operand 741 states and 949 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:33,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:33,178 INFO L93 Difference]: Finished difference Result 1506 states and 1939 transitions. [2021-11-23 05:59:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 05:59:33,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2021-11-23 05:59:33,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:33,184 INFO L225 Difference]: With dead ends: 1506 [2021-11-23 05:59:33,184 INFO L226 Difference]: Without dead ends: 783 [2021-11-23 05:59:33,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 05:59:33,187 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 9 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:33,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1157 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 05:59:33,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-11-23 05:59:33,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 781. [2021-11-23 05:59:33,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 765 states have (on average 1.29281045751634) internal successors, (989), 780 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:33,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 989 transitions. [2021-11-23 05:59:33,239 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 989 transitions. Word has length 151 [2021-11-23 05:59:33,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:33,240 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 989 transitions. [2021-11-23 05:59:33,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:33,240 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 989 transitions. [2021-11-23 05:59:33,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 05:59:33,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:33,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:33,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 05:59:33,467 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 [2021-11-23 05:59:33,468 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:33,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:33,468 INFO L85 PathProgramCache]: Analyzing trace with hash 145652452, now seen corresponding path program 1 times [2021-11-23 05:59:33,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:33,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220600017] [2021-11-23 05:59:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:33,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:33,583 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:33,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267401878] [2021-11-23 05:59:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:33,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:33,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:33,592 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) [2021-11-23 05:59:33,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 05:59:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:34,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2195 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 05:59:34,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 05:59:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 05:59:34,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 05:59:34,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:34,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220600017] [2021-11-23 05:59:34,818 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 05:59:34,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267401878] [2021-11-23 05:59:34,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267401878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 05:59:34,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 05:59:34,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 05:59:34,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136708708] [2021-11-23 05:59:34,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 05:59:34,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 05:59:34,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:34,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 05:59:34,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 05:59:34,823 INFO L87 Difference]: Start difference. First operand 781 states and 989 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:34,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:34,885 INFO L93 Difference]: Finished difference Result 1500 states and 1904 transitions. [2021-11-23 05:59:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 05:59:34,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2021-11-23 05:59:34,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:34,888 INFO L225 Difference]: With dead ends: 1500 [2021-11-23 05:59:34,888 INFO L226 Difference]: Without dead ends: 755 [2021-11-23 05:59:34,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 05:59:34,890 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 594 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:34,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 1171 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 05:59:34,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2021-11-23 05:59:34,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 753. [2021-11-23 05:59:34,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 737 states have (on average 1.2849389416553596) internal successors, (947), 752 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:34,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 947 transitions. [2021-11-23 05:59:34,910 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 947 transitions. Word has length 151 [2021-11-23 05:59:34,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:34,911 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 947 transitions. [2021-11-23 05:59:34,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:34,911 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 947 transitions. [2021-11-23 05:59:34,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 05:59:34,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:34,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:34,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 05:59:35,139 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 [2021-11-23 05:59:35,140 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:35,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:35,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1850791156, now seen corresponding path program 1 times [2021-11-23 05:59:35,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:35,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928309088] [2021-11-23 05:59:35,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:35,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:35,246 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:35,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296977669] [2021-11-23 05:59:35,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:35,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:35,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:35,251 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 05:59:35,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 05:59:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:36,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 05:59:36,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 05:59:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 05:59:36,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 05:59:36,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:36,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928309088] [2021-11-23 05:59:36,603 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 05:59:36,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296977669] [2021-11-23 05:59:36,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296977669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 05:59:36,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 05:59:36,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 05:59:36,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095198008] [2021-11-23 05:59:36,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 05:59:36,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 05:59:36,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:36,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 05:59:36,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 05:59:36,606 INFO L87 Difference]: Start difference. First operand 753 states and 947 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:36,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:36,701 INFO L93 Difference]: Finished difference Result 2215 states and 2792 transitions. [2021-11-23 05:59:36,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 05:59:36,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2021-11-23 05:59:36,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:36,707 INFO L225 Difference]: With dead ends: 2215 [2021-11-23 05:59:36,707 INFO L226 Difference]: Without dead ends: 1500 [2021-11-23 05:59:36,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 05:59:36,709 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 586 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:36,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 1750 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 05:59:36,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2021-11-23 05:59:36,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 799. [2021-11-23 05:59:36,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 783 states have (on average 1.2733077905491699) internal successors, (997), 798 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:36,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 997 transitions. [2021-11-23 05:59:36,735 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 997 transitions. Word has length 151 [2021-11-23 05:59:36,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:36,736 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 997 transitions. [2021-11-23 05:59:36,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:36,736 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 997 transitions. [2021-11-23 05:59:36,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 05:59:36,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:36,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:36,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 05:59:36,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:36,952 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:36,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:36,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1918499578, now seen corresponding path program 1 times [2021-11-23 05:59:36,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:36,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078987499] [2021-11-23 05:59:36,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:36,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:37,058 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:37,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307972687] [2021-11-23 05:59:37,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:37,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:37,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:37,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 05:59:37,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 05:59:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:38,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 05:59:38,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 05:59:38,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 05:59:38,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 05:59:38,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:38,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078987499] [2021-11-23 05:59:38,438 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 05:59:38,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307972687] [2021-11-23 05:59:38,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307972687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 05:59:38,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 05:59:38,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 05:59:38,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615108879] [2021-11-23 05:59:38,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 05:59:38,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 05:59:38,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:38,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 05:59:38,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 05:59:38,440 INFO L87 Difference]: Start difference. First operand 799 states and 997 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:38,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:38,490 INFO L93 Difference]: Finished difference Result 1507 states and 1891 transitions. [2021-11-23 05:59:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 05:59:38,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2021-11-23 05:59:38,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:38,493 INFO L225 Difference]: With dead ends: 1507 [2021-11-23 05:59:38,493 INFO L226 Difference]: Without dead ends: 735 [2021-11-23 05:59:38,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 05:59:38,495 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 574 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:38,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 1165 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 05:59:38,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-23 05:59:38,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2021-11-23 05:59:38,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 719 states have (on average 1.278164116828929) internal successors, (919), 734 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 919 transitions. [2021-11-23 05:59:38,513 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 919 transitions. Word has length 151 [2021-11-23 05:59:38,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:38,513 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 919 transitions. [2021-11-23 05:59:38,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 919 transitions. [2021-11-23 05:59:38,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 05:59:38,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:38,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:38,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 05:59:38,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-23 05:59:38,729 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:38,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:38,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1737579534, now seen corresponding path program 1 times [2021-11-23 05:59:38,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:38,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388700860] [2021-11-23 05:59:38,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:38,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:38,830 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:38,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617598554] [2021-11-23 05:59:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:38,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:38,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:38,832 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 05:59:38,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-23 05:59:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:40,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 2181 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 05:59:40,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 05:59:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 05:59:40,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 05:59:40,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:40,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388700860] [2021-11-23 05:59:40,370 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 05:59:40,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617598554] [2021-11-23 05:59:40,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617598554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 05:59:40,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 05:59:40,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 05:59:40,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987283086] [2021-11-23 05:59:40,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 05:59:40,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 05:59:40,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 05:59:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 05:59:40,372 INFO L87 Difference]: Start difference. First operand 735 states and 919 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:40,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:40,437 INFO L93 Difference]: Finished difference Result 1759 states and 2227 transitions. [2021-11-23 05:59:40,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 05:59:40,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2021-11-23 05:59:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:40,442 INFO L225 Difference]: With dead ends: 1759 [2021-11-23 05:59:40,442 INFO L226 Difference]: Without dead ends: 1073 [2021-11-23 05:59:40,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 05:59:40,444 INFO L933 BasicCegarLoop]: 589 mSDtfsCounter, 306 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:40,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 1153 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 05:59:40,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-11-23 05:59:40,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 908. [2021-11-23 05:59:40,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 892 states have (on average 1.298206278026906) internal successors, (1158), 907 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1158 transitions. [2021-11-23 05:59:40,466 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1158 transitions. Word has length 151 [2021-11-23 05:59:40,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:40,467 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 1158 transitions. [2021-11-23 05:59:40,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:40,467 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1158 transitions. [2021-11-23 05:59:40,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-23 05:59:40,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:40,469 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:40,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-23 05:59:40,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-23 05:59:40,696 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:40,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:40,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1603750718, now seen corresponding path program 1 times [2021-11-23 05:59:40,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:40,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482909867] [2021-11-23 05:59:40,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:40,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:40,770 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:40,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859312652] [2021-11-23 05:59:40,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:40,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:40,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:40,773 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 05:59:40,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-23 05:59:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:41,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 05:59:41,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 05:59:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 05:59:42,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 05:59:42,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:42,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482909867] [2021-11-23 05:59:42,288 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 05:59:42,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859312652] [2021-11-23 05:59:42,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859312652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 05:59:42,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 05:59:42,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 05:59:42,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570531521] [2021-11-23 05:59:42,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 05:59:42,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 05:59:42,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:42,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 05:59:42,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 05:59:42,290 INFO L87 Difference]: Start difference. First operand 908 states and 1158 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:42,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:42,603 INFO L93 Difference]: Finished difference Result 1505 states and 1917 transitions. [2021-11-23 05:59:42,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 05:59:42,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2021-11-23 05:59:42,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:42,606 INFO L225 Difference]: With dead ends: 1505 [2021-11-23 05:59:42,606 INFO L226 Difference]: Without dead ends: 724 [2021-11-23 05:59:42,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 05:59:42,608 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 1015 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:42,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 601 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 05:59:42,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-11-23 05:59:42,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2021-11-23 05:59:42,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 708 states have (on average 1.2725988700564972) internal successors, (901), 723 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:42,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 901 transitions. [2021-11-23 05:59:42,625 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 901 transitions. Word has length 158 [2021-11-23 05:59:42,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:42,625 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 901 transitions. [2021-11-23 05:59:42,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 901 transitions. [2021-11-23 05:59:42,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-23 05:59:42,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:42,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:42,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-23 05:59:42,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-23 05:59:42,852 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:42,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:42,852 INFO L85 PathProgramCache]: Analyzing trace with hash -881822645, now seen corresponding path program 1 times [2021-11-23 05:59:42,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:42,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089259449] [2021-11-23 05:59:42,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:42,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:42,911 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:42,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253665802] [2021-11-23 05:59:42,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:42,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:42,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:42,913 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 05:59:42,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-23 05:59:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:44,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 05:59:44,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 05:59:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 05:59:44,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 05:59:44,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:44,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089259449] [2021-11-23 05:59:44,418 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 05:59:44,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253665802] [2021-11-23 05:59:44,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253665802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 05:59:44,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 05:59:44,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 05:59:44,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829222120] [2021-11-23 05:59:44,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 05:59:44,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 05:59:44,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:44,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 05:59:44,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 05:59:44,421 INFO L87 Difference]: Start difference. First operand 724 states and 901 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:44,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:44,465 INFO L93 Difference]: Finished difference Result 1407 states and 1762 transitions. [2021-11-23 05:59:44,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 05:59:44,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2021-11-23 05:59:44,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:44,468 INFO L225 Difference]: With dead ends: 1407 [2021-11-23 05:59:44,468 INFO L226 Difference]: Without dead ends: 726 [2021-11-23 05:59:44,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 05:59:44,470 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 0 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:44,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1158 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 05:59:44,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-11-23 05:59:44,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 726. [2021-11-23 05:59:44,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 710 states have (on average 1.271830985915493) internal successors, (903), 725 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:44,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 903 transitions. [2021-11-23 05:59:44,487 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 903 transitions. Word has length 165 [2021-11-23 05:59:44,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:44,487 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 903 transitions. [2021-11-23 05:59:44,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:44,487 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 903 transitions. [2021-11-23 05:59:44,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-23 05:59:44,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:44,489 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:44,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-23 05:59:44,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-23 05:59:44,702 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:44,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:44,703 INFO L85 PathProgramCache]: Analyzing trace with hash 797655390, now seen corresponding path program 1 times [2021-11-23 05:59:44,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:44,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185227632] [2021-11-23 05:59:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:44,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:44,788 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:44,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043140012] [2021-11-23 05:59:44,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:44,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:44,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:44,790 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 05:59:44,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-23 05:59:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:46,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 05:59:46,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 05:59:46,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 05:59:46,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 05:59:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 05:59:46,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:46,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185227632] [2021-11-23 05:59:46,911 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 05:59:46,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043140012] [2021-11-23 05:59:46,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043140012] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 05:59:46,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 05:59:46,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 05:59:46,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300890941] [2021-11-23 05:59:46,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 05:59:46,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 05:59:46,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:46,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 05:59:46,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 05:59:46,913 INFO L87 Difference]: Start difference. First operand 726 states and 903 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:46,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:46,954 INFO L93 Difference]: Finished difference Result 1407 states and 1761 transitions. [2021-11-23 05:59:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 05:59:46,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2021-11-23 05:59:46,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:46,957 INFO L225 Difference]: With dead ends: 1407 [2021-11-23 05:59:46,957 INFO L226 Difference]: Without dead ends: 728 [2021-11-23 05:59:46,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 05:59:46,959 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 0 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:46,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1156 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 05:59:46,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-11-23 05:59:46,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 728. [2021-11-23 05:59:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 712 states have (on average 1.271067415730337) internal successors, (905), 727 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 905 transitions. [2021-11-23 05:59:46,976 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 905 transitions. Word has length 167 [2021-11-23 05:59:46,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:46,976 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 905 transitions. [2021-11-23 05:59:46,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:46,976 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 905 transitions. [2021-11-23 05:59:46,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-23 05:59:46,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:46,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:47,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-23 05:59:47,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:47,192 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:47,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:47,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1308439913, now seen corresponding path program 1 times [2021-11-23 05:59:47,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:47,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254210337] [2021-11-23 05:59:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:47,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:47,254 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:47,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910122632] [2021-11-23 05:59:47,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:47,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:47,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:47,255 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 05:59:47,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-23 05:59:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 05:59:49,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 05:59:49,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 05:59:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 05:59:49,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 05:59:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 05:59:49,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:49,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254210337] [2021-11-23 05:59:49,478 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 05:59:49,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910122632] [2021-11-23 05:59:49,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910122632] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 05:59:49,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 05:59:49,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-23 05:59:49,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391474249] [2021-11-23 05:59:49,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 05:59:49,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 05:59:49,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:49,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 05:59:49,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 05:59:49,479 INFO L87 Difference]: Start difference. First operand 728 states and 905 transitions. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:49,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:49,565 INFO L93 Difference]: Finished difference Result 1420 states and 1781 transitions. [2021-11-23 05:59:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 05:59:49,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 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 169 [2021-11-23 05:59:49,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:49,567 INFO L225 Difference]: With dead ends: 1420 [2021-11-23 05:59:49,568 INFO L226 Difference]: Without dead ends: 736 [2021-11-23 05:59:49,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-23 05:59:49,569 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 0 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:49,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1727 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 05:59:49,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-11-23 05:59:49,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2021-11-23 05:59:49,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 720 states have (on average 1.2680555555555555) internal successors, (913), 735 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:49,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 913 transitions. [2021-11-23 05:59:49,601 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 913 transitions. Word has length 169 [2021-11-23 05:59:49,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:49,602 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 913 transitions. [2021-11-23 05:59:49,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 913 transitions. [2021-11-23 05:59:49,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-23 05:59:49,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:49,604 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:49,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-23 05:59:49,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-23 05:59:49,828 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:49,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:49,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1689406549, now seen corresponding path program 2 times [2021-11-23 05:59:49,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:49,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096629762] [2021-11-23 05:59:49,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:49,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:49,898 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:49,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536449160] [2021-11-23 05:59:49,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 05:59:49,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:49,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:49,900 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 05:59:49,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-23 05:59:53,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 05:59:53,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 05:59:53,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 05:59:53,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 05:59:53,471 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 05:59:53,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 05:59:53,818 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 05:59:53,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 05:59:53,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096629762] [2021-11-23 05:59:53,818 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 05:59:53,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536449160] [2021-11-23 05:59:53,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536449160] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 05:59:53,818 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 05:59:53,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-11-23 05:59:53,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765609542] [2021-11-23 05:59:53,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 05:59:53,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 05:59:53,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 05:59:53,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 05:59:53,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-23 05:59:53,820 INFO L87 Difference]: Start difference. First operand 736 states and 913 transitions. Second operand has 13 states, 13 states have (on average 13.846153846153847) internal successors, (180), 13 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:55,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 05:59:55,555 INFO L93 Difference]: Finished difference Result 2113 states and 2666 transitions. [2021-11-23 05:59:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 05:59:55,555 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.846153846153847) internal successors, (180), 13 states have internal predecessors, (180), 0 states have call successors, (0), 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 177 [2021-11-23 05:59:55,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 05:59:55,559 INFO L225 Difference]: With dead ends: 2113 [2021-11-23 05:59:55,559 INFO L226 Difference]: Without dead ends: 1424 [2021-11-23 05:59:55,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2021-11-23 05:59:55,561 INFO L933 BasicCegarLoop]: 1120 mSDtfsCounter, 2308 mSDsluCounter, 7944 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 9064 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 05:59:55,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2308 Valid, 9064 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 05:59:55,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2021-11-23 05:59:55,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 769. [2021-11-23 05:59:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 753 states have (on average 1.2602921646746348) internal successors, (949), 768 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 949 transitions. [2021-11-23 05:59:55,588 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 949 transitions. Word has length 177 [2021-11-23 05:59:55,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 05:59:55,588 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 949 transitions. [2021-11-23 05:59:55,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.846153846153847) internal successors, (180), 13 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 05:59:55,589 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 949 transitions. [2021-11-23 05:59:55,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-23 05:59:55,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 05:59:55,591 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 05:59:55,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-23 05:59:55,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-23 05:59:55,815 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 05:59:55,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 05:59:55,815 INFO L85 PathProgramCache]: Analyzing trace with hash 726279838, now seen corresponding path program 3 times [2021-11-23 05:59:55,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 05:59:55,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041311430] [2021-11-23 05:59:55,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 05:59:55,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 05:59:55,881 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 05:59:55,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401889376] [2021-11-23 05:59:55,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 05:59:55,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 05:59:55,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 05:59:55,882 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 05:59:55,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process Killed by 15