./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_test2-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5eb0e4c4138981b5d0263d433279609e9b809291f20fa6c19565d53ef342ae2b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 05:33:20,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 05:33:20,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 05:33:20,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 05:33:20,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 05:33:20,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 05:33:20,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 05:33:20,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 05:33:20,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 05:33:20,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 05:33:20,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 05:33:20,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 05:33:20,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 05:33:20,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 05:33:20,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 05:33:20,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 05:33:20,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 05:33:20,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 05:33:20,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 05:33:20,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 05:33:20,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 05:33:20,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 05:33:20,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 05:33:20,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 05:33:20,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 05:33:20,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 05:33:20,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 05:33:20,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 05:33:20,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 05:33:20,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 05:33:20,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 05:33:20,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 05:33:20,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 05:33:20,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 05:33:20,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 05:33:20,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 05:33:20,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 05:33:20,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 05:33:20,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 05:33:20,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 05:33:20,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 05:33:20,433 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 05:33:20,469 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 05:33:20,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 05:33:20,470 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 05:33:20,470 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 05:33:20,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 05:33:20,471 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 05:33:20,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 05:33:20,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 05:33:20,473 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 05:33:20,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 05:33:20,474 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 05:33:20,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 05:33:20,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 05:33:20,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 05:33:20,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 05:33:20,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 05:33:20,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 05:33:20,475 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 05:33:20,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 05:33:20,476 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 05:33:20,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 05:33:20,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 05:33:20,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 05:33:20,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 05:33:20,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:33:20,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 05:33:20,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 05:33:20,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 05:33:20,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 05:33:20,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 05:33:20,478 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 05:33:20,478 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 05:33:20,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 05:33:20,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eb0e4c4138981b5d0263d433279609e9b809291f20fa6c19565d53ef342ae2b [2021-12-28 05:33:20,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 05:33:20,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 05:33:20,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 05:33:20,805 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 05:33:20,806 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 05:33:20,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i [2021-12-28 05:33:20,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5781433e0/57fe4b76853947e0b06e9cbc5aa205ae/FLAG745830746 [2021-12-28 05:33:21,464 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 05:33:21,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i [2021-12-28 05:33:21,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5781433e0/57fe4b76853947e0b06e9cbc5aa205ae/FLAG745830746 [2021-12-28 05:33:21,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5781433e0/57fe4b76853947e0b06e9cbc5aa205ae [2021-12-28 05:33:21,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 05:33:21,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 05:33:21,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 05:33:21,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 05:33:21,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 05:33:21,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:33:21" (1/1) ... [2021-12-28 05:33:21,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c84d527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:33:21, skipping insertion in model container [2021-12-28 05:33:21,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:33:21" (1/1) ... [2021-12-28 05:33:21,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 05:33:21,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 05:33:22,163 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_test2-1.i[37019,37032] [2021-12-28 05:33:22,277 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_test2-1.i[47352,47365] [2021-12-28 05:33:22,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:33:22,289 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 05:33:22,312 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_test2-1.i[37019,37032] [2021-12-28 05:33:22,363 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_test2-1.i[47352,47365] [2021-12-28 05:33:22,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:33:22,420 INFO L208 MainTranslator]: Completed translation [2021-12-28 05:33:22,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:33:22 WrapperNode [2021-12-28 05:33:22,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 05:33:22,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 05:33:22,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 05:33:22,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 05:33:22,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:33:22" (1/1) ... [2021-12-28 05:33:22,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:33:22" (1/1) ... [2021-12-28 05:33:22,515 INFO L137 Inliner]: procedures = 208, calls = 235, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 884 [2021-12-28 05:33:22,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 05:33:22,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 05:33:22,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 05:33:22,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 05:33:22,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:33:22" (1/1) ... [2021-12-28 05:33:22,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:33:22" (1/1) ... [2021-12-28 05:33:22,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:33:22" (1/1) ... [2021-12-28 05:33:22,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:33:22" (1/1) ... [2021-12-28 05:33:22,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:33:22" (1/1) ... [2021-12-28 05:33:22,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:33:22" (1/1) ... [2021-12-28 05:33:22,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:33:22" (1/1) ... [2021-12-28 05:33:22,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 05:33:22,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 05:33:22,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 05:33:22,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 05:33:22,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:33:22" (1/1) ... [2021-12-28 05:33:22,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:33:22,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:33:22,634 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) [2021-12-28 05:33:22,641 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 [2021-12-28 05:33:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 05:33:22,671 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 05:33:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 05:33:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-28 05:33:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 05:33:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 05:33:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 05:33:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 05:33:22,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 05:33:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 05:33:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 05:33:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 05:33:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 05:33:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 05:33:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 05:33:22,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 05:33:22,891 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 05:33:22,893 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 05:33:23,655 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 05:33:23,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 05:33:23,663 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-12-28 05:33:23,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:33:23 BoogieIcfgContainer [2021-12-28 05:33:23,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 05:33:23,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 05:33:23,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 05:33:23,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 05:33:23,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 05:33:21" (1/3) ... [2021-12-28 05:33:23,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b04f158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:33:23, skipping insertion in model container [2021-12-28 05:33:23,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:33:22" (2/3) ... [2021-12-28 05:33:23,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b04f158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:33:23, skipping insertion in model container [2021-12-28 05:33:23,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:33:23" (3/3) ... [2021-12-28 05:33:23,672 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test2-1.i [2021-12-28 05:33:23,676 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 05:33:23,677 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 05:33:23,746 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 05:33:23,752 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 [2021-12-28 05:33:23,752 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 05:33:23,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 164 states have (on average 1.6890243902439024) internal successors, (277), 171 states have internal predecessors, (277), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:33:23,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 05:33:23,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:33:23,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:33:23,799 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:33:23,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:33:23,803 INFO L85 PathProgramCache]: Analyzing trace with hash -858859523, now seen corresponding path program 1 times [2021-12-28 05:33:23,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:33:23,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480743865] [2021-12-28 05:33:23,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:23,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:33:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:33:23,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:33:23,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:33:23,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480743865] [2021-12-28 05:33:23,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480743865] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:33:23,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:33:23,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 05:33:23,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945780199] [2021-12-28 05:33:23,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:33:23,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 05:33:23,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:33:24,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 05:33:24,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 05:33:24,010 INFO L87 Difference]: Start difference. First operand has 177 states, 164 states have (on average 1.6890243902439024) internal successors, (277), 171 states have internal predecessors, (277), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) 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) [2021-12-28 05:33:24,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:33:24,071 INFO L93 Difference]: Finished difference Result 352 states and 589 transitions. [2021-12-28 05:33:24,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 05:33:24,073 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 [2021-12-28 05:33:24,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:33:24,088 INFO L225 Difference]: With dead ends: 352 [2021-12-28 05:33:24,088 INFO L226 Difference]: Without dead ends: 173 [2021-12-28 05:33:24,093 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 [2021-12-28 05:33:24,098 INFO L933 BasicCegarLoop]: 233 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, 233 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 [2021-12-28 05:33:24,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:33:24,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-12-28 05:33:24,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-12-28 05:33:24,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 161 states have (on average 1.3229813664596273) internal successors, (213), 167 states have internal predecessors, (213), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:33:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 229 transitions. [2021-12-28 05:33:24,151 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 229 transitions. Word has length 9 [2021-12-28 05:33:24,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:33:24,151 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 229 transitions. [2021-12-28 05:33:24,151 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) [2021-12-28 05:33:24,152 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 229 transitions. [2021-12-28 05:33:24,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-28 05:33:24,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:33:24,154 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] [2021-12-28 05:33:24,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 05:33:24,154 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:33:24,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:33:24,155 INFO L85 PathProgramCache]: Analyzing trace with hash -294026559, now seen corresponding path program 1 times [2021-12-28 05:33:24,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:33:24,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155277815] [2021-12-28 05:33:24,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:24,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:33:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:33:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:33:24,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:33:24,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155277815] [2021-12-28 05:33:24,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155277815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:33:24,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:33:24,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:33:24,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700123024] [2021-12-28 05:33:24,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:33:24,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:33:24,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:33:24,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:33:24,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:33:24,253 INFO L87 Difference]: Start difference. First operand 173 states and 229 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) [2021-12-28 05:33:24,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:33:24,642 INFO L93 Difference]: Finished difference Result 363 states and 489 transitions. [2021-12-28 05:33:24,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:33:24,642 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 [2021-12-28 05:33:24,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:33:24,644 INFO L225 Difference]: With dead ends: 363 [2021-12-28 05:33:24,644 INFO L226 Difference]: Without dead ends: 284 [2021-12-28 05:33:24,645 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 [2021-12-28 05:33:24,646 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 138 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:33:24,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 553 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 05:33:24,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-12-28 05:33:24,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 175. [2021-12-28 05:33:24,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 163 states have (on average 1.3190184049079754) internal successors, (215), 169 states have internal predecessors, (215), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:33:24,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 231 transitions. [2021-12-28 05:33:24,682 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 231 transitions. Word has length 44 [2021-12-28 05:33:24,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:33:24,682 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 231 transitions. [2021-12-28 05:33:24,683 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) [2021-12-28 05:33:24,683 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 231 transitions. [2021-12-28 05:33:24,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-28 05:33:24,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:33:24,687 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] [2021-12-28 05:33:24,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 05:33:24,687 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:33:24,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:33:24,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1509402797, now seen corresponding path program 1 times [2021-12-28 05:33:24,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:33:24,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847744471] [2021-12-28 05:33:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:24,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:33:24,857 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 05:33:24,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945052760] [2021-12-28 05:33:24,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:24,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:33:24,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:33:24,863 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) [2021-12-28 05:33:24,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 05:33:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:33:25,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 05:33:25,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:33:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:33:25,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:33:25,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:33:25,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847744471] [2021-12-28 05:33:25,650 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 05:33:25,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945052760] [2021-12-28 05:33:25,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945052760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:33:25,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:33:25,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:33:25,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369608131] [2021-12-28 05:33:25,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:33:25,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 05:33:25,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:33:25,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 05:33:25,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:33:25,653 INFO L87 Difference]: Start difference. First operand 175 states and 231 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) [2021-12-28 05:33:25,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:33:25,712 INFO L93 Difference]: Finished difference Result 367 states and 489 transitions. [2021-12-28 05:33:25,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 05:33:25,713 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 96 [2021-12-28 05:33:25,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:33:25,714 INFO L225 Difference]: With dead ends: 367 [2021-12-28 05:33:25,714 INFO L226 Difference]: Without dead ends: 196 [2021-12-28 05:33:25,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:33:25,716 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 9 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 403 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 [2021-12-28 05:33:25,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 403 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:33:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-28 05:33:25,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-12-28 05:33:25,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 183 states have (on average 1.284153005464481) internal successors, (235), 189 states have internal predecessors, (235), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:33:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 251 transitions. [2021-12-28 05:33:25,727 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 251 transitions. Word has length 96 [2021-12-28 05:33:25,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:33:25,727 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 251 transitions. [2021-12-28 05:33:25,727 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) [2021-12-28 05:33:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 251 transitions. [2021-12-28 05:33:25,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-28 05:33:25,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:33:25,730 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] [2021-12-28 05:33:25,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 05:33:25,943 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 [2021-12-28 05:33:25,944 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:33:25,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:33:25,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1482337195, now seen corresponding path program 1 times [2021-12-28 05:33:25,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:33:25,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055479989] [2021-12-28 05:33:25,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:25,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:33:26,088 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 05:33:26,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242275746] [2021-12-28 05:33:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:26,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:33:26,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:33:26,092 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) [2021-12-28 05:33:26,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 05:33:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:33:26,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 05:33:26,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:33:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 05:33:26,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:33:26,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:33:26,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055479989] [2021-12-28 05:33:26,892 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 05:33:26,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242275746] [2021-12-28 05:33:26,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242275746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:33:26,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:33:26,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:33:26,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394275954] [2021-12-28 05:33:26,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:33:26,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 05:33:26,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:33:26,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 05:33:26,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:33:26,895 INFO L87 Difference]: Start difference. First operand 195 states and 251 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:33:26,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:33:26,960 INFO L93 Difference]: Finished difference Result 294 states and 388 transitions. [2021-12-28 05:33:26,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 05:33:26,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 96 [2021-12-28 05:33:26,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:33:26,965 INFO L225 Difference]: With dead ends: 294 [2021-12-28 05:33:26,965 INFO L226 Difference]: Without dead ends: 216 [2021-12-28 05:33:26,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:33:26,967 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 8 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 405 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 [2021-12-28 05:33:26,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 405 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:33:26,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-28 05:33:26,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2021-12-28 05:33:26,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 203 states have (on average 1.2561576354679802) internal successors, (255), 209 states have internal predecessors, (255), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:33:26,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 271 transitions. [2021-12-28 05:33:26,976 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 271 transitions. Word has length 96 [2021-12-28 05:33:26,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:33:26,977 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 271 transitions. [2021-12-28 05:33:26,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:33:26,977 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 271 transitions. [2021-12-28 05:33:26,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-28 05:33:26,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:33:26,979 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] [2021-12-28 05:33:27,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 05:33:27,191 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 [2021-12-28 05:33:27,192 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:33:27,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:33:27,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1801512851, now seen corresponding path program 1 times [2021-12-28 05:33:27,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:33:27,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882407356] [2021-12-28 05:33:27,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:27,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:33:27,329 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 05:33:27,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532501707] [2021-12-28 05:33:27,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:27,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:33:27,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:33:27,340 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) [2021-12-28 05:33:27,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 05:33:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:33:27,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 05:33:27,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:33:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:33:28,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:33:28,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:33:28,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882407356] [2021-12-28 05:33:28,129 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 05:33:28,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532501707] [2021-12-28 05:33:28,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532501707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:33:28,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:33:28,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:33:28,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121531946] [2021-12-28 05:33:28,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:33:28,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:33:28,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:33:28,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:33:28,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:33:28,131 INFO L87 Difference]: Start difference. First operand 215 states and 271 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) [2021-12-28 05:33:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:33:28,191 INFO L93 Difference]: Finished difference Result 418 states and 530 transitions. [2021-12-28 05:33:28,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:33:28,194 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 96 [2021-12-28 05:33:28,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:33:28,196 INFO L225 Difference]: With dead ends: 418 [2021-12-28 05:33:28,196 INFO L226 Difference]: Without dead ends: 207 [2021-12-28 05:33:28,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:33:28,197 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 192 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 431 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 [2021-12-28 05:33:28,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 431 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:33:28,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-28 05:33:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2021-12-28 05:33:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 189 states have (on average 1.2380952380952381) internal successors, (234), 195 states have internal predecessors, (234), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:33:28,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 250 transitions. [2021-12-28 05:33:28,205 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 250 transitions. Word has length 96 [2021-12-28 05:33:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:33:28,205 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 250 transitions. [2021-12-28 05:33:28,206 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) [2021-12-28 05:33:28,206 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 250 transitions. [2021-12-28 05:33:28,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-28 05:33:28,207 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:33:28,207 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] [2021-12-28 05:33:28,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-28 05:33:28,421 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 [2021-12-28 05:33:28,422 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:33:28,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:33:28,422 INFO L85 PathProgramCache]: Analyzing trace with hash 432355323, now seen corresponding path program 1 times [2021-12-28 05:33:28,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:33:28,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058683048] [2021-12-28 05:33:28,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:28,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:33:28,516 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 05:33:28,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099268143] [2021-12-28 05:33:28,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:28,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:33:28,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:33:28,518 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) [2021-12-28 05:33:28,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 05:33:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:33:29,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 05:33:29,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:33:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 05:33:29,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:33:29,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:33:29,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058683048] [2021-12-28 05:33:29,437 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 05:33:29,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099268143] [2021-12-28 05:33:29,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099268143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:33:29,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:33:29,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:33:29,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678573136] [2021-12-28 05:33:29,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:33:29,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:33:29,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:33:29,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:33:29,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:33:29,440 INFO L87 Difference]: Start difference. First operand 201 states and 250 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:33:29,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:33:29,497 INFO L93 Difference]: Finished difference Result 291 states and 368 transitions. [2021-12-28 05:33:29,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:33:29,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 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 96 [2021-12-28 05:33:29,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:33:29,505 INFO L225 Difference]: With dead ends: 291 [2021-12-28 05:33:29,505 INFO L226 Difference]: Without dead ends: 193 [2021-12-28 05:33:29,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:33:29,506 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 76 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:33:29,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 518 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:33:29,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-12-28 05:33:29,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2021-12-28 05:33:29,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 175 states have (on average 1.217142857142857) internal successors, (213), 181 states have internal predecessors, (213), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:33:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 229 transitions. [2021-12-28 05:33:29,514 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 229 transitions. Word has length 96 [2021-12-28 05:33:29,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:33:29,515 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 229 transitions. [2021-12-28 05:33:29,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:33:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 229 transitions. [2021-12-28 05:33:29,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-28 05:33:29,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:33:29,516 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] [2021-12-28 05:33:29,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-28 05:33:29,750 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 [2021-12-28 05:33:29,750 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:33:29,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:33:29,755 INFO L85 PathProgramCache]: Analyzing trace with hash -725253137, now seen corresponding path program 1 times [2021-12-28 05:33:29,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:33:29,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843403074] [2021-12-28 05:33:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:29,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:33:29,852 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 05:33:29,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118760055] [2021-12-28 05:33:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:29,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:33:29,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:33:29,856 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) [2021-12-28 05:33:29,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 05:33:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:33:30,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 05:33:30,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:33:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:33:30,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:33:30,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:33:30,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843403074] [2021-12-28 05:33:30,963 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 05:33:30,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118760055] [2021-12-28 05:33:30,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118760055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:33:30,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:33:30,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:33:30,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742546172] [2021-12-28 05:33:30,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:33:30,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 05:33:30,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:33:30,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 05:33:30,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:33:30,966 INFO L87 Difference]: Start difference. First operand 187 states and 229 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) [2021-12-28 05:33:31,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:33:31,033 INFO L93 Difference]: Finished difference Result 476 states and 582 transitions. [2021-12-28 05:33:31,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 05:33:31,034 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 96 [2021-12-28 05:33:31,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:33:31,035 INFO L225 Difference]: With dead ends: 476 [2021-12-28 05:33:31,036 INFO L226 Difference]: Without dead ends: 293 [2021-12-28 05:33:31,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:33:31,037 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 75 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:33:31,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 456 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:33:31,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-12-28 05:33:31,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 291. [2021-12-28 05:33:31,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 274 states have (on average 1.197080291970803) internal successors, (328), 285 states have internal predecessors, (328), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-28 05:33:31,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 354 transitions. [2021-12-28 05:33:31,048 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 354 transitions. Word has length 96 [2021-12-28 05:33:31,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:33:31,049 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 354 transitions. [2021-12-28 05:33:31,049 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) [2021-12-28 05:33:31,049 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 354 transitions. [2021-12-28 05:33:31,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-28 05:33:31,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:33:31,051 INFO L514 BasicCegarLoop]: trace histogram [2, 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] [2021-12-28 05:33:31,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 05:33:31,271 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 [2021-12-28 05:33:31,272 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:33:31,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:33:31,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1015837155, now seen corresponding path program 1 times [2021-12-28 05:33:31,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:33:31,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670872171] [2021-12-28 05:33:31,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:31,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:33:31,317 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 05:33:31,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291721158] [2021-12-28 05:33:31,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:31,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:33:31,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:33:31,319 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) [2021-12-28 05:33:31,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 05:33:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:33:31,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 05:33:31,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:33:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 05:33:32,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:33:32,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:33:32,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670872171] [2021-12-28 05:33:32,137 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 05:33:32,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291721158] [2021-12-28 05:33:32,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291721158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:33:32,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:33:32,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:33:32,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211086378] [2021-12-28 05:33:32,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:33:32,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:33:32,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:33:32,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:33:32,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:33:32,139 INFO L87 Difference]: Start difference. First operand 291 states and 354 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-28 05:33:32,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:33:32,313 INFO L93 Difference]: Finished difference Result 474 states and 579 transitions. [2021-12-28 05:33:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:33:32,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2021-12-28 05:33:32,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:33:32,315 INFO L225 Difference]: With dead ends: 474 [2021-12-28 05:33:32,315 INFO L226 Difference]: Without dead ends: 231 [2021-12-28 05:33:32,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:33:32,317 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 274 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:33:32,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 302 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:33:32,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-28 05:33:32,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2021-12-28 05:33:32,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 219 states have (on average 1.187214611872146) internal successors, (260), 225 states have internal predecessors, (260), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:33:32,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 276 transitions. [2021-12-28 05:33:32,325 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 276 transitions. Word has length 111 [2021-12-28 05:33:32,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:33:32,325 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 276 transitions. [2021-12-28 05:33:32,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-28 05:33:32,325 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 276 transitions. [2021-12-28 05:33:32,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-28 05:33:32,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:33:32,327 INFO L514 BasicCegarLoop]: trace histogram [2, 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] [2021-12-28 05:33:32,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 05:33:32,535 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 [2021-12-28 05:33:32,536 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:33:32,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:33:32,536 INFO L85 PathProgramCache]: Analyzing trace with hash 379973459, now seen corresponding path program 1 times [2021-12-28 05:33:32,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:33:32,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275926009] [2021-12-28 05:33:32,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:32,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:33:32,579 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 05:33:32,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926749782] [2021-12-28 05:33:32,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:32,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:33:32,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:33:32,581 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) [2021-12-28 05:33:32,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 05:33:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:33:33,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 05:33:33,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:33:33,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 05:33:33,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:33:33,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:33:33,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275926009] [2021-12-28 05:33:33,819 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 05:33:33,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926749782] [2021-12-28 05:33:33,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926749782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:33:33,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:33:33,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:33:33,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046890734] [2021-12-28 05:33:33,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:33:33,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:33:33,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:33:33,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:33:33,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:33:33,822 INFO L87 Difference]: Start difference. First operand 231 states and 276 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-28 05:33:33,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:33:33,852 INFO L93 Difference]: Finished difference Result 414 states and 501 transitions. [2021-12-28 05:33:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:33:33,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 118 [2021-12-28 05:33:33,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:33:33,854 INFO L225 Difference]: With dead ends: 414 [2021-12-28 05:33:33,855 INFO L226 Difference]: Without dead ends: 234 [2021-12-28 05:33:33,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:33:33,858 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 2 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:33:33,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 629 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:33:33,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-12-28 05:33:33,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-12-28 05:33:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 221 states have (on average 1.1900452488687783) internal successors, (263), 228 states have internal predecessors, (263), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-28 05:33:33,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 280 transitions. [2021-12-28 05:33:33,870 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 280 transitions. Word has length 118 [2021-12-28 05:33:33,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:33:33,871 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 280 transitions. [2021-12-28 05:33:33,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-28 05:33:33,871 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 280 transitions. [2021-12-28 05:33:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-28 05:33:33,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:33:33,872 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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] [2021-12-28 05:33:33,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 05:33:34,099 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 [2021-12-28 05:33:34,100 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:33:34,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:33:34,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1827414795, now seen corresponding path program 1 times [2021-12-28 05:33:34,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:33:34,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502280821] [2021-12-28 05:33:34,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:34,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:33:34,152 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 05:33:34,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53545035] [2021-12-28 05:33:34,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:34,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:33:34,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:33:34,154 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) [2021-12-28 05:33:34,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 05:33:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:33:35,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-28 05:33:35,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:33:35,861 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 05:33:35,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:33:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 05:33:36,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:33:36,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502280821] [2021-12-28 05:33:36,143 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 05:33:36,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53545035] [2021-12-28 05:33:36,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53545035] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 05:33:36,143 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:33:36,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-28 05:33:36,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292150131] [2021-12-28 05:33:36,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:33:36,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 05:33:36,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:33:36,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 05:33:36,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 05:33:36,145 INFO L87 Difference]: Start difference. First operand 234 states and 280 transitions. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 05:33:36,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:33:36,285 INFO L93 Difference]: Finished difference Result 428 states and 522 transitions. [2021-12-28 05:33:36,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 05:33:36,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 120 [2021-12-28 05:33:36,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:33:36,288 INFO L225 Difference]: With dead ends: 428 [2021-12-28 05:33:36,288 INFO L226 Difference]: Without dead ends: 243 [2021-12-28 05:33:36,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-12-28 05:33:36,290 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 12 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:33:36,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1036 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:33:36,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-12-28 05:33:36,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-12-28 05:33:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 229 states have (on average 1.2008733624454149) internal successors, (275), 236 states have internal predecessors, (275), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-28 05:33:36,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 292 transitions. [2021-12-28 05:33:36,307 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 292 transitions. Word has length 120 [2021-12-28 05:33:36,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:33:36,307 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 292 transitions. [2021-12-28 05:33:36,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 05:33:36,308 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 292 transitions. [2021-12-28 05:33:36,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-28 05:33:36,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:33:36,310 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 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] [2021-12-28 05:33:36,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 05:33:36,523 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 [2021-12-28 05:33:36,524 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:33:36,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:33:36,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1544509267, now seen corresponding path program 2 times [2021-12-28 05:33:36,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:33:36,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561704861] [2021-12-28 05:33:36,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:36,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:33:36,574 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 05:33:36,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329215531] [2021-12-28 05:33:36,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 05:33:36,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:33:36,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:33:36,591 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) [2021-12-28 05:33:36,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 05:33:37,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 05:33:37,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 05:33:37,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-28 05:33:37,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:33:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 05:33:37,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:33:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 05:33:37,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:33:37,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561704861] [2021-12-28 05:33:37,836 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 05:33:37,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329215531] [2021-12-28 05:33:37,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329215531] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 05:33:37,836 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:33:37,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-12-28 05:33:37,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410284310] [2021-12-28 05:33:37,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:33:37,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 05:33:37,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:33:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 05:33:37,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-12-28 05:33:37,838 INFO L87 Difference]: Start difference. First operand 243 states and 292 transitions. Second operand has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 05:33:38,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:33:38,393 INFO L93 Difference]: Finished difference Result 446 states and 547 transitions. [2021-12-28 05:33:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-28 05:33:38,394 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 124 [2021-12-28 05:33:38,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:33:38,395 INFO L225 Difference]: With dead ends: 446 [2021-12-28 05:33:38,395 INFO L226 Difference]: Without dead ends: 258 [2021-12-28 05:33:38,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=244, Invalid=512, Unknown=0, NotChecked=0, Total=756 [2021-12-28 05:33:38,397 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 52 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:33:38,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 1464 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:33:38,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-12-28 05:33:38,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 252. [2021-12-28 05:33:38,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 238 states have (on average 1.2058823529411764) internal successors, (287), 245 states have internal predecessors, (287), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-28 05:33:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 304 transitions. [2021-12-28 05:33:38,407 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 304 transitions. Word has length 124 [2021-12-28 05:33:38,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:33:38,407 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 304 transitions. [2021-12-28 05:33:38,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 05:33:38,408 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 304 transitions. [2021-12-28 05:33:38,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-28 05:33:38,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:33:38,409 INFO L514 BasicCegarLoop]: trace histogram [15, 2, 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] [2021-12-28 05:33:38,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-28 05:33:38,623 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 [2021-12-28 05:33:38,623 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:33:38,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:33:38,624 INFO L85 PathProgramCache]: Analyzing trace with hash 453394239, now seen corresponding path program 3 times [2021-12-28 05:33:38,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:33:38,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163793622] [2021-12-28 05:33:38,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:33:38,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:33:38,682 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 05:33:38,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895974953] [2021-12-28 05:33:38,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 05:33:38,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:33:38,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:33:38,684 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) [2021-12-28 05:33:38,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process