/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 12:37:29,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 12:37:29,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 12:37:29,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 12:37:29,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 12:37:29,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 12:37:29,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 12:37:29,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 12:37:29,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 12:37:29,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 12:37:29,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 12:37:29,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 12:37:29,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 12:37:29,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 12:37:29,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 12:37:29,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 12:37:29,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 12:37:29,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 12:37:29,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 12:37:29,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 12:37:29,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 12:37:29,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 12:37:29,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 12:37:29,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 12:37:29,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 12:37:29,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 12:37:29,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 12:37:29,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 12:37:29,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 12:37:29,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 12:37:29,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 12:37:29,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 12:37:29,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 12:37:29,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 12:37:29,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 12:37:29,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 12:37:29,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 12:37:29,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 12:37:29,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 12:37:29,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 12:37:29,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 12:37:29,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2022-01-18 12:37:29,436 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 12:37:29,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 12:37:29,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 12:37:29,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 12:37:29,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 12:37:29,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 12:37:29,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 12:37:29,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 12:37:29,437 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 12:37:29,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 12:37:29,437 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 12:37:29,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 12:37:29,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 12:37:29,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 12:37:29,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 12:37:29,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 12:37:29,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 12:37:29,438 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 12:37:29,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 12:37:29,438 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 12:37:29,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 12:37:29,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 12:37:29,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 12:37:29,439 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 12:37:29,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 12:37:29,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:37:29,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 12:37:29,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 12:37:29,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 12:37:29,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 12:37:29,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 12:37:29,439 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 12:37:29,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 12:37:29,439 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 12:37:29,439 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 12:37:29,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 12:37:29,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 12:37:29,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 12:37:29,597 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 12:37:29,597 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 12:37:29,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c [2022-01-18 12:37:29,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/091355ae4/446e758185cd4551a5438ab09567e11e/FLAGcbc48b127 [2022-01-18 12:37:29,990 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 12:37:29,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c [2022-01-18 12:37:29,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/091355ae4/446e758185cd4551a5438ab09567e11e/FLAGcbc48b127 [2022-01-18 12:37:30,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/091355ae4/446e758185cd4551a5438ab09567e11e [2022-01-18 12:37:30,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 12:37:30,005 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 12:37:30,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 12:37:30,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 12:37:30,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 12:37:30,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:37:30" (1/1) ... [2022-01-18 12:37:30,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@439d158b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:37:30, skipping insertion in model container [2022-01-18 12:37:30,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:37:30" (1/1) ... [2022-01-18 12:37:30,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 12:37:30,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 12:37:30,181 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c[2870,2883] [2022-01-18 12:37:30,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:37:30,201 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 12:37:30,230 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c[2870,2883] [2022-01-18 12:37:30,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:37:30,253 INFO L208 MainTranslator]: Completed translation [2022-01-18 12:37:30,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:37:30 WrapperNode [2022-01-18 12:37:30,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 12:37:30,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 12:37:30,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 12:37:30,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 12:37:30,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:37:30" (1/1) ... [2022-01-18 12:37:30,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:37:30" (1/1) ... [2022-01-18 12:37:30,286 INFO L137 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 163 [2022-01-18 12:37:30,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 12:37:30,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 12:37:30,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 12:37:30,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 12:37:30,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:37:30" (1/1) ... [2022-01-18 12:37:30,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:37:30" (1/1) ... [2022-01-18 12:37:30,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:37:30" (1/1) ... [2022-01-18 12:37:30,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:37:30" (1/1) ... [2022-01-18 12:37:30,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:37:30" (1/1) ... [2022-01-18 12:37:30,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:37:30" (1/1) ... [2022-01-18 12:37:30,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:37:30" (1/1) ... [2022-01-18 12:37:30,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 12:37:30,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 12:37:30,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 12:37:30,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 12:37:30,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:37:30" (1/1) ... [2022-01-18 12:37:30,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:37:30,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:37:30,346 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) [2022-01-18 12:37:30,363 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 [2022-01-18 12:37:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 12:37:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 12:37:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 12:37:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 12:37:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 12:37:30,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 12:37:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 12:37:30,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 12:37:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 12:37:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 12:37:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 12:37:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-18 12:37:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 12:37:30,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 12:37:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 12:37:30,389 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 12:37:30,475 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 12:37:30,476 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 12:37:30,702 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 12:37:30,748 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 12:37:30,748 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-18 12:37:30,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:37:30 BoogieIcfgContainer [2022-01-18 12:37:30,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 12:37:30,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 12:37:30,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 12:37:30,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 12:37:30,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 12:37:30" (1/3) ... [2022-01-18 12:37:30,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e11d613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:37:30, skipping insertion in model container [2022-01-18 12:37:30,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:37:30" (2/3) ... [2022-01-18 12:37:30,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e11d613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:37:30, skipping insertion in model container [2022-01-18 12:37:30,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:37:30" (3/3) ... [2022-01-18 12:37:30,755 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2022-01-18 12:37:30,758 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 12:37:30,758 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 12:37:30,758 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 12:37:30,758 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 12:37:30,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,789 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,789 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,789 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,789 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,789 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,790 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:37:30,797 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 12:37:30,831 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 12:37:30,836 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=FINITE_AUTOMATA, 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 [2022-01-18 12:37:30,836 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 12:37:30,847 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 141 places, 145 transitions, 306 flow [2022-01-18 12:37:30,896 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 673 states, 672 states have (on average 2.6324404761904763) internal successors, (1769), 672 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:30,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 673 states, 672 states have (on average 2.6324404761904763) internal successors, (1769), 672 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:30,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-18 12:37:30,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:30,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:37:30,914 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:30,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:30,917 INFO L85 PathProgramCache]: Analyzing trace with hash -27169455, now seen corresponding path program 1 times [2022-01-18 12:37:30,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:30,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856591809] [2022-01-18 12:37:30,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:30,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:37:31,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:31,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856591809] [2022-01-18 12:37:31,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856591809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:37:31,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:37:31,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 12:37:31,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461867613] [2022-01-18 12:37:31,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:37:31,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 12:37:31,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:31,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 12:37:31,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 12:37:31,086 INFO L87 Difference]: Start difference. First operand has 673 states, 672 states have (on average 2.6324404761904763) internal successors, (1769), 672 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:31,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:31,123 INFO L93 Difference]: Finished difference Result 673 states and 1616 transitions. [2022-01-18 12:37:31,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 12:37:31,125 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-01-18 12:37:31,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:31,138 INFO L225 Difference]: With dead ends: 673 [2022-01-18 12:37:31,138 INFO L226 Difference]: Without dead ends: 669 [2022-01-18 12:37:31,140 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 [2022-01-18 12:37:31,142 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:31,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:37:31,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-01-18 12:37:31,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 669. [2022-01-18 12:37:31,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 2.413173652694611) internal successors, (1612), 668 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1612 transitions. [2022-01-18 12:37:31,203 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1612 transitions. Word has length 104 [2022-01-18 12:37:31,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:31,203 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 1612 transitions. [2022-01-18 12:37:31,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1612 transitions. [2022-01-18 12:37:31,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-18 12:37:31,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:31,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:37:31,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 12:37:31,222 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:31,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:31,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1160132223, now seen corresponding path program 1 times [2022-01-18 12:37:31,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:31,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824797258] [2022-01-18 12:37:31,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:31,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:37:31,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:31,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824797258] [2022-01-18 12:37:31,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824797258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:37:31,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:37:31,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:37:31,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831558187] [2022-01-18 12:37:31,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:37:31,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:37:31,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:31,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:37:31,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:37:31,371 INFO L87 Difference]: Start difference. First operand 669 states and 1612 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:31,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:31,437 INFO L93 Difference]: Finished difference Result 778 states and 1820 transitions. [2022-01-18 12:37:31,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 12:37:31,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-18 12:37:31,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:31,440 INFO L225 Difference]: With dead ends: 778 [2022-01-18 12:37:31,440 INFO L226 Difference]: Without dead ends: 675 [2022-01-18 12:37:31,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-18 12:37:31,443 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 278 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:31,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 329 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:37:31,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-01-18 12:37:31,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 670. [2022-01-18 12:37:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 669 states have (on average 2.411061285500747) internal successors, (1613), 669 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:31,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1613 transitions. [2022-01-18 12:37:31,463 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1613 transitions. Word has length 108 [2022-01-18 12:37:31,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:31,463 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 1613 transitions. [2022-01-18 12:37:31,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:31,463 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1613 transitions. [2022-01-18 12:37:31,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-18 12:37:31,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:31,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:37:31,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 12:37:31,466 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:31,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:31,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1866616762, now seen corresponding path program 1 times [2022-01-18 12:37:31,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:31,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233296303] [2022-01-18 12:37:31,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:31,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:37:31,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:31,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233296303] [2022-01-18 12:37:31,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233296303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:37:31,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:37:31,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 12:37:31,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101748320] [2022-01-18 12:37:31,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:37:31,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 12:37:31,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:31,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 12:37:31,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 12:37:31,602 INFO L87 Difference]: Start difference. First operand 670 states and 1613 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:31,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:31,631 INFO L93 Difference]: Finished difference Result 712 states and 1721 transitions. [2022-01-18 12:37:31,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 12:37:31,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-18 12:37:31,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:31,634 INFO L225 Difference]: With dead ends: 712 [2022-01-18 12:37:31,634 INFO L226 Difference]: Without dead ends: 712 [2022-01-18 12:37:31,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 12:37:31,635 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:31,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 182 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:37:31,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-01-18 12:37:31,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 712. [2022-01-18 12:37:31,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 2.420534458509142) internal successors, (1721), 711 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:31,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1721 transitions. [2022-01-18 12:37:31,657 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1721 transitions. Word has length 115 [2022-01-18 12:37:31,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:31,657 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 1721 transitions. [2022-01-18 12:37:31,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:31,658 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1721 transitions. [2022-01-18 12:37:31,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-18 12:37:31,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:31,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:37:31,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 12:37:31,668 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:31,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:31,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1016891364, now seen corresponding path program 2 times [2022-01-18 12:37:31,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:31,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557266989] [2022-01-18 12:37:31,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:31,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:37:32,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:32,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557266989] [2022-01-18 12:37:32,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557266989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:37:32,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:37:32,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 12:37:32,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350808115] [2022-01-18 12:37:32,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:37:32,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 12:37:32,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:32,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 12:37:32,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:37:32,152 INFO L87 Difference]: Start difference. First operand 712 states and 1721 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:32,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:32,519 INFO L93 Difference]: Finished difference Result 1064 states and 2599 transitions. [2022-01-18 12:37:32,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 12:37:32,519 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-18 12:37:32,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:32,525 INFO L225 Difference]: With dead ends: 1064 [2022-01-18 12:37:32,525 INFO L226 Difference]: Without dead ends: 1013 [2022-01-18 12:37:32,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:37:32,533 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 203 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:32,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1237 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:37:32,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-01-18 12:37:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 774. [2022-01-18 12:37:32,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 773 states have (on average 2.4307891332470892) internal successors, (1879), 773 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:32,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1879 transitions. [2022-01-18 12:37:32,555 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1879 transitions. Word has length 115 [2022-01-18 12:37:32,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:32,556 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 1879 transitions. [2022-01-18 12:37:32,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:32,556 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1879 transitions. [2022-01-18 12:37:32,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-18 12:37:32,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:32,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:37:32,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 12:37:32,558 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:32,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:32,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1424716348, now seen corresponding path program 3 times [2022-01-18 12:37:32,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:32,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138549263] [2022-01-18 12:37:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:32,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:32,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:37:32,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:32,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138549263] [2022-01-18 12:37:32,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138549263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:37:32,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:37:32,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 12:37:32,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269110114] [2022-01-18 12:37:32,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:37:32,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 12:37:32,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:32,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 12:37:32,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:37:32,912 INFO L87 Difference]: Start difference. First operand 774 states and 1879 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:33,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:33,155 INFO L93 Difference]: Finished difference Result 1112 states and 2694 transitions. [2022-01-18 12:37:33,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 12:37:33,156 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-18 12:37:33,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:33,160 INFO L225 Difference]: With dead ends: 1112 [2022-01-18 12:37:33,160 INFO L226 Difference]: Without dead ends: 1061 [2022-01-18 12:37:33,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:37:33,161 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 193 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:33,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 1269 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:37:33,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-01-18 12:37:33,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 778. [2022-01-18 12:37:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 2.4375804375804377) internal successors, (1894), 777 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1894 transitions. [2022-01-18 12:37:33,178 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1894 transitions. Word has length 115 [2022-01-18 12:37:33,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:33,179 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 1894 transitions. [2022-01-18 12:37:33,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1894 transitions. [2022-01-18 12:37:33,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-18 12:37:33,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:33,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:37:33,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 12:37:33,181 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:33,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:33,181 INFO L85 PathProgramCache]: Analyzing trace with hash 122927162, now seen corresponding path program 4 times [2022-01-18 12:37:33,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:33,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549358680] [2022-01-18 12:37:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:33,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:37:33,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:33,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549358680] [2022-01-18 12:37:33,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549358680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:37:33,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:37:33,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 12:37:33,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789006416] [2022-01-18 12:37:33,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:37:33,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 12:37:33,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:33,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 12:37:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:37:33,431 INFO L87 Difference]: Start difference. First operand 778 states and 1894 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:33,685 INFO L93 Difference]: Finished difference Result 1013 states and 2475 transitions. [2022-01-18 12:37:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 12:37:33,686 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-18 12:37:33,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:33,689 INFO L225 Difference]: With dead ends: 1013 [2022-01-18 12:37:33,689 INFO L226 Difference]: Without dead ends: 950 [2022-01-18 12:37:33,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:37:33,690 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 159 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:33,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 1185 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:37:33,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2022-01-18 12:37:33,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 778. [2022-01-18 12:37:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 2.4324324324324325) internal successors, (1890), 777 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1890 transitions. [2022-01-18 12:37:33,705 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1890 transitions. Word has length 115 [2022-01-18 12:37:33,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:33,705 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 1890 transitions. [2022-01-18 12:37:33,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1890 transitions. [2022-01-18 12:37:33,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-18 12:37:33,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:33,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:37:33,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 12:37:33,707 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:33,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:33,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1038328538, now seen corresponding path program 5 times [2022-01-18 12:37:33,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:33,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855288418] [2022-01-18 12:37:33,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:33,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:33,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:37:33,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:33,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855288418] [2022-01-18 12:37:33,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855288418] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:37:33,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:37:33,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 12:37:33,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270165542] [2022-01-18 12:37:33,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:37:33,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 12:37:33,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:33,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 12:37:33,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:37:33,992 INFO L87 Difference]: Start difference. First operand 778 states and 1890 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:34,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:34,232 INFO L93 Difference]: Finished difference Result 1113 states and 2715 transitions. [2022-01-18 12:37:34,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 12:37:34,232 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-18 12:37:34,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:34,236 INFO L225 Difference]: With dead ends: 1113 [2022-01-18 12:37:34,236 INFO L226 Difference]: Without dead ends: 1062 [2022-01-18 12:37:34,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:37:34,237 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 198 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:34,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 1150 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:37:34,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2022-01-18 12:37:34,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 823. [2022-01-18 12:37:34,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 822 states have (on average 2.427007299270073) internal successors, (1995), 822 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1995 transitions. [2022-01-18 12:37:34,256 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1995 transitions. Word has length 115 [2022-01-18 12:37:34,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:34,256 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 1995 transitions. [2022-01-18 12:37:34,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:34,256 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1995 transitions. [2022-01-18 12:37:34,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-18 12:37:34,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:34,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:37:34,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 12:37:34,258 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:34,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:34,259 INFO L85 PathProgramCache]: Analyzing trace with hash 892649658, now seen corresponding path program 6 times [2022-01-18 12:37:34,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:34,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404393149] [2022-01-18 12:37:34,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:34,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:37:34,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:34,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404393149] [2022-01-18 12:37:34,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404393149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:37:34,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:37:34,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 12:37:34,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443619154] [2022-01-18 12:37:34,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:37:34,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 12:37:34,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:34,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 12:37:34,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:37:34,592 INFO L87 Difference]: Start difference. First operand 823 states and 1995 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:34,915 INFO L93 Difference]: Finished difference Result 1235 states and 2985 transitions. [2022-01-18 12:37:34,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 12:37:34,915 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-18 12:37:34,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:34,919 INFO L225 Difference]: With dead ends: 1235 [2022-01-18 12:37:34,919 INFO L226 Difference]: Without dead ends: 1184 [2022-01-18 12:37:34,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2022-01-18 12:37:34,920 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 223 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:34,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 1419 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:37:34,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-01-18 12:37:34,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 909. [2022-01-18 12:37:34,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 908 states have (on average 2.4129955947136565) internal successors, (2191), 908 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:34,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 2191 transitions. [2022-01-18 12:37:34,935 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 2191 transitions. Word has length 115 [2022-01-18 12:37:34,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:34,936 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 2191 transitions. [2022-01-18 12:37:34,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:34,936 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 2191 transitions. [2022-01-18 12:37:34,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-18 12:37:34,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:34,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:37:34,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 12:37:34,938 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:34,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:34,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1515110916, now seen corresponding path program 7 times [2022-01-18 12:37:34,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:34,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712264767] [2022-01-18 12:37:34,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:34,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:37:35,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:35,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712264767] [2022-01-18 12:37:35,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712264767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:37:35,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:37:35,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 12:37:35,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537782148] [2022-01-18 12:37:35,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:37:35,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 12:37:35,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:35,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 12:37:35,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:37:35,252 INFO L87 Difference]: Start difference. First operand 909 states and 2191 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:35,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:35,476 INFO L93 Difference]: Finished difference Result 1193 states and 2870 transitions. [2022-01-18 12:37:35,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 12:37:35,477 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-18 12:37:35,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:35,481 INFO L225 Difference]: With dead ends: 1193 [2022-01-18 12:37:35,481 INFO L226 Difference]: Without dead ends: 1142 [2022-01-18 12:37:35,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2022-01-18 12:37:35,481 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 217 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:35,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 1219 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:37:35,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2022-01-18 12:37:35,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 913. [2022-01-18 12:37:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 912 states have (on average 2.418859649122807) internal successors, (2206), 912 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 2206 transitions. [2022-01-18 12:37:35,497 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 2206 transitions. Word has length 115 [2022-01-18 12:37:35,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:35,497 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 2206 transitions. [2022-01-18 12:37:35,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:35,498 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 2206 transitions. [2022-01-18 12:37:35,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-18 12:37:35,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:35,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:37:35,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 12:37:35,499 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:35,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:35,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1478067194, now seen corresponding path program 8 times [2022-01-18 12:37:35,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:35,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832522429] [2022-01-18 12:37:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:35,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:37:35,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:35,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832522429] [2022-01-18 12:37:35,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832522429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:37:35,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:37:35,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 12:37:35,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499318051] [2022-01-18 12:37:35,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:37:35,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 12:37:35,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:35,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 12:37:35,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:37:35,767 INFO L87 Difference]: Start difference. First operand 913 states and 2206 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:35,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:35,989 INFO L93 Difference]: Finished difference Result 1094 states and 2651 transitions. [2022-01-18 12:37:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 12:37:35,990 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-18 12:37:35,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:35,994 INFO L225 Difference]: With dead ends: 1094 [2022-01-18 12:37:35,994 INFO L226 Difference]: Without dead ends: 1031 [2022-01-18 12:37:35,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2022-01-18 12:37:35,994 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 194 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:35,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 1248 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:37:35,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-01-18 12:37:36,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 885. [2022-01-18 12:37:36,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 884 states have (on average 2.408371040723982) internal successors, (2129), 884 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 2129 transitions. [2022-01-18 12:37:36,008 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 2129 transitions. Word has length 115 [2022-01-18 12:37:36,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:36,009 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 2129 transitions. [2022-01-18 12:37:36,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:36,009 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 2129 transitions. [2022-01-18 12:37:36,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-18 12:37:36,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:36,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:37:36,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 12:37:36,011 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:36,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:36,011 INFO L85 PathProgramCache]: Analyzing trace with hash -2058803320, now seen corresponding path program 9 times [2022-01-18 12:37:36,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:36,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86547972] [2022-01-18 12:37:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:36,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:37:36,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:36,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86547972] [2022-01-18 12:37:36,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86547972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:37:36,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:37:36,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 12:37:36,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010929808] [2022-01-18 12:37:36,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:37:36,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 12:37:36,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:36,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 12:37:36,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:37:36,290 INFO L87 Difference]: Start difference. First operand 885 states and 2129 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:36,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:36,488 INFO L93 Difference]: Finished difference Result 1171 states and 2834 transitions. [2022-01-18 12:37:36,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 12:37:36,489 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-18 12:37:36,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:36,492 INFO L225 Difference]: With dead ends: 1171 [2022-01-18 12:37:36,492 INFO L226 Difference]: Without dead ends: 1120 [2022-01-18 12:37:36,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:37:36,493 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 217 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:36,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 1013 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:37:36,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2022-01-18 12:37:36,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 901. [2022-01-18 12:37:36,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 900 states have (on average 2.4144444444444444) internal successors, (2173), 900 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 2173 transitions. [2022-01-18 12:37:36,508 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 2173 transitions. Word has length 115 [2022-01-18 12:37:36,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:36,508 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 2173 transitions. [2022-01-18 12:37:36,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:36,509 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 2173 transitions. [2022-01-18 12:37:36,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-18 12:37:36,510 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:36,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:37:36,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 12:37:36,511 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:36,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:36,511 INFO L85 PathProgramCache]: Analyzing trace with hash 382804392, now seen corresponding path program 10 times [2022-01-18 12:37:36,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:36,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427301747] [2022-01-18 12:37:36,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:36,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:36,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:37:36,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:36,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427301747] [2022-01-18 12:37:36,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427301747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:37:36,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:37:36,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 12:37:36,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410424608] [2022-01-18 12:37:36,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:37:36,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 12:37:36,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:36,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 12:37:36,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:37:36,771 INFO L87 Difference]: Start difference. First operand 901 states and 2173 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:37,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:37,043 INFO L93 Difference]: Finished difference Result 1189 states and 2859 transitions. [2022-01-18 12:37:37,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 12:37:37,043 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-18 12:37:37,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:37,047 INFO L225 Difference]: With dead ends: 1189 [2022-01-18 12:37:37,047 INFO L226 Difference]: Without dead ends: 1138 [2022-01-18 12:37:37,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:37:37,048 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 188 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:37,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 1390 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:37:37,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2022-01-18 12:37:37,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 905. [2022-01-18 12:37:37,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 904 states have (on average 2.420353982300885) internal successors, (2188), 904 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:37,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 2188 transitions. [2022-01-18 12:37:37,063 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 2188 transitions. Word has length 115 [2022-01-18 12:37:37,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:37,063 INFO L470 AbstractCegarLoop]: Abstraction has 905 states and 2188 transitions. [2022-01-18 12:37:37,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:37,064 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 2188 transitions. [2022-01-18 12:37:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-18 12:37:37,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:37,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:37:37,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 12:37:37,065 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:37,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:37,066 INFO L85 PathProgramCache]: Analyzing trace with hash -918984794, now seen corresponding path program 11 times [2022-01-18 12:37:37,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:37,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504471172] [2022-01-18 12:37:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:37,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:37:37,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:37,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504471172] [2022-01-18 12:37:37,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504471172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:37:37,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:37:37,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 12:37:37,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002987659] [2022-01-18 12:37:37,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:37:37,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 12:37:37,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:37,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 12:37:37,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:37:37,310 INFO L87 Difference]: Start difference. First operand 905 states and 2188 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:37,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:37,545 INFO L93 Difference]: Finished difference Result 1090 states and 2640 transitions. [2022-01-18 12:37:37,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 12:37:37,545 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-18 12:37:37,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:37,548 INFO L225 Difference]: With dead ends: 1090 [2022-01-18 12:37:37,548 INFO L226 Difference]: Without dead ends: 1027 [2022-01-18 12:37:37,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:37:37,549 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 170 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:37,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 1223 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:37:37,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-01-18 12:37:37,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 897. [2022-01-18 12:37:37,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 896 states have (on average 2.4129464285714284) internal successors, (2162), 896 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:37,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 2162 transitions. [2022-01-18 12:37:37,563 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 2162 transitions. Word has length 115 [2022-01-18 12:37:37,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:37,564 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 2162 transitions. [2022-01-18 12:37:37,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:37,564 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 2162 transitions. [2022-01-18 12:37:37,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-18 12:37:37,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:37,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:37:37,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 12:37:37,566 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:37,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:37,566 INFO L85 PathProgramCache]: Analyzing trace with hash -3583418, now seen corresponding path program 12 times [2022-01-18 12:37:37,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:37,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566937957] [2022-01-18 12:37:37,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:37,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:37:37,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:37,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566937957] [2022-01-18 12:37:37,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566937957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:37:37,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:37:37,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 12:37:37,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204455292] [2022-01-18 12:37:37,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:37:37,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 12:37:37,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:37,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 12:37:37,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:37:37,899 INFO L87 Difference]: Start difference. First operand 897 states and 2162 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:38,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:38,118 INFO L93 Difference]: Finished difference Result 1201 states and 2904 transitions. [2022-01-18 12:37:38,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 12:37:38,118 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-18 12:37:38,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:38,122 INFO L225 Difference]: With dead ends: 1201 [2022-01-18 12:37:38,122 INFO L226 Difference]: Without dead ends: 1150 [2022-01-18 12:37:38,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:37:38,123 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 202 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:38,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 1037 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:37:38,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2022-01-18 12:37:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 869. [2022-01-18 12:37:38,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 868 states have (on average 2.402073732718894) internal successors, (2085), 868 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:38,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 2085 transitions. [2022-01-18 12:37:38,137 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 2085 transitions. Word has length 115 [2022-01-18 12:37:38,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:38,137 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 2085 transitions. [2022-01-18 12:37:38,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:38,137 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 2085 transitions. [2022-01-18 12:37:38,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-18 12:37:38,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:38,139 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, 1, 1] [2022-01-18 12:37:38,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-18 12:37:38,139 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:38,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:38,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1756827106, now seen corresponding path program 1 times [2022-01-18 12:37:38,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:38,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849356556] [2022-01-18 12:37:38,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:38,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:37:38,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:38,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849356556] [2022-01-18 12:37:38,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849356556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:37:38,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:37:38,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 12:37:38,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172118875] [2022-01-18 12:37:38,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:37:38,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 12:37:38,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:38,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 12:37:38,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 12:37:38,171 INFO L87 Difference]: Start difference. First operand 869 states and 2085 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:38,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:38,190 INFO L93 Difference]: Finished difference Result 1737 states and 4340 transitions. [2022-01-18 12:37:38,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 12:37:38,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 120 [2022-01-18 12:37:38,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:38,194 INFO L225 Difference]: With dead ends: 1737 [2022-01-18 12:37:38,194 INFO L226 Difference]: Without dead ends: 1520 [2022-01-18 12:37:38,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 12:37:38,195 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 117 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:38,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 272 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:37:38,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2022-01-18 12:37:38,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1212. [2022-01-18 12:37:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1211 states have (on average 2.564822460776218) internal successors, (3106), 1211 states have internal predecessors, (3106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:38,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 3106 transitions. [2022-01-18 12:37:38,213 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 3106 transitions. Word has length 120 [2022-01-18 12:37:38,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:38,214 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 3106 transitions. [2022-01-18 12:37:38,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:38,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 3106 transitions. [2022-01-18 12:37:38,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-18 12:37:38,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:38,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:37:38,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 12:37:38,216 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:38,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:38,216 INFO L85 PathProgramCache]: Analyzing trace with hash -293483883, now seen corresponding path program 1 times [2022-01-18 12:37:38,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:38,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598202645] [2022-01-18 12:37:38,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:38,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:37:38,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:38,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598202645] [2022-01-18 12:37:38,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598202645] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:37:38,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44458809] [2022-01-18 12:37:38,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:38,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:37:38,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:37:38,273 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) [2022-01-18 12:37:38,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 12:37:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:38,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 12:37:38,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:37:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:37:38,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:37:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:37:38,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44458809] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:37:38,866 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:37:38,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:37:38,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302179273] [2022-01-18 12:37:38,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:37:38,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:37:38,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:38,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:37:38,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:37:38,867 INFO L87 Difference]: Start difference. First operand 1212 states and 3106 transitions. Second operand has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 19 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:38,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:38,986 INFO L93 Difference]: Finished difference Result 1683 states and 4216 transitions. [2022-01-18 12:37:38,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 12:37:38,986 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 19 states have internal predecessors, (200), 0 states have call successors, (0), 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 121 [2022-01-18 12:37:38,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:38,990 INFO L225 Difference]: With dead ends: 1683 [2022-01-18 12:37:38,990 INFO L226 Difference]: Without dead ends: 1224 [2022-01-18 12:37:38,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-01-18 12:37:38,991 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 739 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:38,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 741 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:37:38,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2022-01-18 12:37:39,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1219. [2022-01-18 12:37:39,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1218 states have (on average 2.5558292282430215) internal successors, (3113), 1218 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:39,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 3113 transitions. [2022-01-18 12:37:39,007 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 3113 transitions. Word has length 121 [2022-01-18 12:37:39,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:39,007 INFO L470 AbstractCegarLoop]: Abstraction has 1219 states and 3113 transitions. [2022-01-18 12:37:39,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 19 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:39,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 3113 transitions. [2022-01-18 12:37:39,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-18 12:37:39,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:39,009 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1] [2022-01-18 12:37:39,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 12:37:39,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 12:37:39,227 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:39,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:39,228 INFO L85 PathProgramCache]: Analyzing trace with hash -927741638, now seen corresponding path program 2 times [2022-01-18 12:37:39,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:39,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816109620] [2022-01-18 12:37:39,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:39,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:37:39,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:39,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816109620] [2022-01-18 12:37:39,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816109620] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:37:39,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336027440] [2022-01-18 12:37:39,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:37:39,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:37:39,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:37:39,796 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) [2022-01-18 12:37:39,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 12:37:39,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:37:39,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:37:39,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-18 12:37:39,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:37:40,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:37:40,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:37:40,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 12:37:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:37:40,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:37:41,166 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:37:41,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-01-18 12:37:41,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-01-18 12:37:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:37:42,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336027440] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:37:42,311 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:37:42,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 21] total 56 [2022-01-18 12:37:42,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742082252] [2022-01-18 12:37:42,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:37:42,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-18 12:37:42,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:37:42,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-18 12:37:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=2748, Unknown=2, NotChecked=0, Total=3080 [2022-01-18 12:37:42,313 INFO L87 Difference]: Start difference. First operand 1219 states and 3113 transitions. Second operand has 56 states, 56 states have (on average 5.321428571428571) internal successors, (298), 56 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:44,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:37:44,760 INFO L93 Difference]: Finished difference Result 5301 states and 13894 transitions. [2022-01-18 12:37:44,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 12:37:44,765 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.321428571428571) internal successors, (298), 56 states have internal predecessors, (298), 0 states have call successors, (0), 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 128 [2022-01-18 12:37:44,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:37:44,778 INFO L225 Difference]: With dead ends: 5301 [2022-01-18 12:37:44,778 INFO L226 Difference]: Without dead ends: 4293 [2022-01-18 12:37:44,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1732 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1305, Invalid=6883, Unknown=2, NotChecked=0, Total=8190 [2022-01-18 12:37:44,779 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 2480 mSDsluCounter, 4488 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2480 SdHoareTripleChecker+Valid, 4418 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:37:44,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2480 Valid, 4418 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1461 Invalid, 0 Unknown, 86 Unchecked, 0.7s Time] [2022-01-18 12:37:44,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4293 states. [2022-01-18 12:37:44,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4293 to 2081. [2022-01-18 12:37:44,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2081 states, 2080 states have (on average 2.5610576923076924) internal successors, (5327), 2080 states have internal predecessors, (5327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 5327 transitions. [2022-01-18 12:37:44,839 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 5327 transitions. Word has length 128 [2022-01-18 12:37:44,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:37:44,839 INFO L470 AbstractCegarLoop]: Abstraction has 2081 states and 5327 transitions. [2022-01-18 12:37:44,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.321428571428571) internal successors, (298), 56 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:37:44,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 5327 transitions. [2022-01-18 12:37:44,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:37:44,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:37:44,843 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:37:44,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 12:37:45,060 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,SelfDestructingSolverStorable16 [2022-01-18 12:37:45,060 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:37:45,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:37:45,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1695806250, now seen corresponding path program 1 times [2022-01-18 12:37:45,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:37:45,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254805391] [2022-01-18 12:37:45,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:45,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:37:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:37:46,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:37:46,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254805391] [2022-01-18 12:37:46,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254805391] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:37:46,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744482948] [2022-01-18 12:37:46,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:37:46,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:37:46,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:37:46,515 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) [2022-01-18 12:37:46,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 12:37:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:37:46,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 68 conjunts are in the unsatisfiable core [2022-01-18 12:37:46,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:37:48,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:37:48,407 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:37:48,713 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 12:37:48,713 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 12:37:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:37:49,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:37:50,617 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:37:50,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 87 [2022-01-18 12:37:50,621 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 60 [2022-01-18 12:38:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:38:02,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744482948] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:38:02,496 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:38:02,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 36] total 102 [2022-01-18 12:38:02,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188844536] [2022-01-18 12:38:02,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:38:02,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-18 12:38:02,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:38:02,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-18 12:38:02,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=791, Invalid=9495, Unknown=16, NotChecked=0, Total=10302 [2022-01-18 12:38:02,499 INFO L87 Difference]: Start difference. First operand 2081 states and 5327 transitions. Second operand has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:38:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:38:16,826 INFO L93 Difference]: Finished difference Result 4247 states and 10764 transitions. [2022-01-18 12:38:16,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 12:38:16,826 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 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 133 [2022-01-18 12:38:16,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:38:16,836 INFO L225 Difference]: With dead ends: 4247 [2022-01-18 12:38:16,837 INFO L226 Difference]: Without dead ends: 4085 [2022-01-18 12:38:16,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 211 SyntacticMatches, 11 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10106 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=2791, Invalid=27963, Unknown=46, NotChecked=0, Total=30800 [2022-01-18 12:38:16,843 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 2288 mSDsluCounter, 11108 mSDsCounter, 0 mSdLazyCounter, 2857 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 10416 SdHoareTripleChecker+Invalid, 6345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3327 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:38:16,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2288 Valid, 10416 Invalid, 6345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2857 Invalid, 0 Unknown, 3327 Unchecked, 1.6s Time] [2022-01-18 12:38:16,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4085 states. [2022-01-18 12:38:16,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4085 to 2296. [2022-01-18 12:38:16,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 2295 states have (on average 2.5838779956427014) internal successors, (5930), 2295 states have internal predecessors, (5930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:38:16,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 5930 transitions. [2022-01-18 12:38:16,899 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 5930 transitions. Word has length 133 [2022-01-18 12:38:16,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:38:16,899 INFO L470 AbstractCegarLoop]: Abstraction has 2296 states and 5930 transitions. [2022-01-18 12:38:16,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:38:16,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 5930 transitions. [2022-01-18 12:38:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:38:16,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:38:16,904 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:38:16,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 12:38:17,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 12:38:17,119 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:38:17,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:38:17,120 INFO L85 PathProgramCache]: Analyzing trace with hash 745801462, now seen corresponding path program 2 times [2022-01-18 12:38:17,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:38:17,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998236150] [2022-01-18 12:38:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:38:17,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:38:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:38:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:38:18,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:38:18,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998236150] [2022-01-18 12:38:18,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998236150] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:38:18,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493107410] [2022-01-18 12:38:18,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:38:18,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:38:18,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:38:18,520 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) [2022-01-18 12:38:18,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 12:38:18,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:38:18,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:38:18,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 72 conjunts are in the unsatisfiable core [2022-01-18 12:38:18,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:38:20,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:38:20,555 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:38:20,876 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-18 12:38:20,877 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2022-01-18 12:38:21,546 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:38:21,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:38:22,719 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:38:22,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 61 [2022-01-18 12:38:22,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2022-01-18 12:38:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:38:24,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493107410] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:38:24,978 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:38:24,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 36] total 101 [2022-01-18 12:38:24,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579443238] [2022-01-18 12:38:24,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:38:24,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-01-18 12:38:24,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:38:24,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-01-18 12:38:24,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=9301, Unknown=15, NotChecked=0, Total=10100 [2022-01-18 12:38:24,980 INFO L87 Difference]: Start difference. First operand 2296 states and 5930 transitions. Second operand has 101 states, 101 states have (on average 3.2475247524752477) internal successors, (328), 101 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:38:36,056 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_~s~0 c_~N~0)) (.cse6 (select (select |c_#memory_int| c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) (.cse5 (<= c_~s~0 c_~N~0)) (.cse1 (not (<= 0 c_~q_back~0))) (.cse2 (not (< c_~q_back~0 c_~n~0))) (.cse4 (= (+ c_~C~0 c_~y~0 (* (- 4294967296) (div (+ c_~C~0 c_~y~0) 4294967296))) (+ (* (div c_~x~0 4294967296) (- 4294967296)) c_~x~0))) (.cse7 (< c_~q_back~0 0)) (.cse8 (<= c_~n~0 c_~q_back~0)) (.cse3 (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0))) (and (<= c_~N~0 c_~s~0) (<= c_~y~0 c_~x~0) (or (and .cse0 (= (+ c_~C~0 c_~x~0 (* (div (+ c_~C~0 c_~x~0) 4294967296) (- 4294967296))) (+ c_~y~0 (* (div c_~y~0 4294967296) (- 4294967296))))) (not (= |c_thread2Thread1of1ForFork1_~j~0#1| 0))) (= c_~s~0 1) (or .cse1 .cse2 .cse3 (and .cse0 .cse4)) .cse5 (= c_~C~0 c_~x~0) (<= c_~N~0 1) (or (and (= c_~N~0 .cse6) .cse4) .cse7 .cse8 .cse3) (or (and (= (+ c_~s~0 .cse6) c_~N~0) .cse4) .cse7 .cse8 .cse3) (or (and .cse5 (<= |c_thread1Thread1of1ForFork0_~i~0#1| c_~s~0)) (<= (* c_~n~0 4) (+ c_~q~0.offset 3 (* 4 c_~q_back~0)))) (= (+ c_~y~0 (* (- 1) c_~C~0)) 0) (< 0 c_~N~0) (< 0 c_~n~0) (or .cse1 .cse2 (and (= c_~N~0 (+ c_~s~0 |c_thread2Thread1of1ForFork1_~j~0#1|)) .cse4) .cse3) (= c_~q~0.offset 0) (<= 1 c_~q_back~0) (or (and .cse4 (forall ((v_ArrVal_287 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_287) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) .cse7 .cse8 .cse3) (<= c_~n~0 2) (<= c_~x~0 c_~y~0))) is different from false [2022-01-18 12:38:44,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-18 12:38:48,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:38:48,431 INFO L93 Difference]: Finished difference Result 5076 states and 12842 transitions. [2022-01-18 12:38:48,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-01-18 12:38:48,431 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 3.2475247524752477) internal successors, (328), 101 states have internal predecessors, (328), 0 states have call successors, (0), 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 133 [2022-01-18 12:38:48,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:38:48,440 INFO L225 Difference]: With dead ends: 5076 [2022-01-18 12:38:48,440 INFO L226 Difference]: Without dead ends: 4878 [2022-01-18 12:38:48,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 210 SyntacticMatches, 7 SemanticMatches, 208 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 14169 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=3871, Invalid=39535, Unknown=70, NotChecked=414, Total=43890 [2022-01-18 12:38:48,443 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 3555 mSDsluCounter, 12096 mSDsCounter, 0 mSdLazyCounter, 4734 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3555 SdHoareTripleChecker+Valid, 11279 SdHoareTripleChecker+Invalid, 7685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 4734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2561 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:38:48,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3555 Valid, 11279 Invalid, 7685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 4734 Invalid, 0 Unknown, 2561 Unchecked, 6.6s Time] [2022-01-18 12:38:48,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4878 states. [2022-01-18 12:38:48,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4878 to 2436. [2022-01-18 12:38:48,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 2435 states have (on average 2.5864476386036963) internal successors, (6298), 2435 states have internal predecessors, (6298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:38:48,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 6298 transitions. [2022-01-18 12:38:48,490 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 6298 transitions. Word has length 133 [2022-01-18 12:38:48,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:38:48,490 INFO L470 AbstractCegarLoop]: Abstraction has 2436 states and 6298 transitions. [2022-01-18 12:38:48,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 3.2475247524752477) internal successors, (328), 101 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:38:48,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 6298 transitions. [2022-01-18 12:38:48,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:38:48,495 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:38:48,495 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:38:48,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-18 12:38:48,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:38:48,708 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:38:48,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:38:48,708 INFO L85 PathProgramCache]: Analyzing trace with hash -555987724, now seen corresponding path program 3 times [2022-01-18 12:38:48,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:38:48,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694431181] [2022-01-18 12:38:48,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:38:48,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:38:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:38:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:38:49,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:38:49,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694431181] [2022-01-18 12:38:49,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694431181] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:38:49,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634651238] [2022-01-18 12:38:49,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:38:49,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:38:49,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:38:49,997 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) [2022-01-18 12:38:49,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 12:38:50,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:38:50,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:38:50,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 64 conjunts are in the unsatisfiable core [2022-01-18 12:38:50,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:38:51,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:38:51,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:38:52,165 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 12:38:52,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 12:38:52,816 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:38:52,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:38:54,020 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:38:54,020 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 87 [2022-01-18 12:38:54,024 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 60 [2022-01-18 12:39:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:39:07,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634651238] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:39:07,122 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:39:07,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 37] total 103 [2022-01-18 12:39:07,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644645384] [2022-01-18 12:39:07,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:39:07,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-01-18 12:39:07,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:39:07,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-01-18 12:39:07,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=774, Invalid=9714, Unknown=18, NotChecked=0, Total=10506 [2022-01-18 12:39:07,124 INFO L87 Difference]: Start difference. First operand 2436 states and 6298 transitions. Second operand has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:39:27,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:39:27,814 INFO L93 Difference]: Finished difference Result 4629 states and 11823 transitions. [2022-01-18 12:39:27,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-18 12:39:27,815 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 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 133 [2022-01-18 12:39:27,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:39:27,823 INFO L225 Difference]: With dead ends: 4629 [2022-01-18 12:39:27,823 INFO L226 Difference]: Without dead ends: 4427 [2022-01-18 12:39:27,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 227 SyntacticMatches, 12 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10846 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=2529, Invalid=29636, Unknown=55, NotChecked=0, Total=32220 [2022-01-18 12:39:27,825 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 2015 mSDsluCounter, 9649 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 9232 SdHoareTripleChecker+Invalid, 5303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2629 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:39:27,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2015 Valid, 9232 Invalid, 5303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2527 Invalid, 0 Unknown, 2629 Unchecked, 1.5s Time] [2022-01-18 12:39:27,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2022-01-18 12:39:27,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 2560. [2022-01-18 12:39:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2560 states, 2559 states have (on average 2.5881203595154356) internal successors, (6623), 2559 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:39:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 6623 transitions. [2022-01-18 12:39:27,891 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 6623 transitions. Word has length 133 [2022-01-18 12:39:27,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:39:27,891 INFO L470 AbstractCegarLoop]: Abstraction has 2560 states and 6623 transitions. [2022-01-18 12:39:27,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:39:27,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 6623 transitions. [2022-01-18 12:39:27,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:39:27,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:39:27,896 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:39:27,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 12:39:28,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:39:28,113 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:39:28,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:39:28,114 INFO L85 PathProgramCache]: Analyzing trace with hash 359413652, now seen corresponding path program 4 times [2022-01-18 12:39:28,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:39:28,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670589487] [2022-01-18 12:39:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:39:28,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:39:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:39:29,456 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:39:29,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:39:29,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670589487] [2022-01-18 12:39:29,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670589487] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:39:29,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42674365] [2022-01-18 12:39:29,457 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:39:29,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:39:29,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:39:29,458 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) [2022-01-18 12:39:29,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 12:39:29,536 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:39:29,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:39:29,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 64 conjunts are in the unsatisfiable core [2022-01-18 12:39:29,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:39:31,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:39:31,307 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:39:31,628 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 12:39:31,628 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 12:39:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:39:32,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:39:33,517 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:39:33,517 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 87 [2022-01-18 12:39:33,521 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 60 [2022-01-18 12:39:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:39:45,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42674365] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:39:45,661 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:39:45,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 37] total 103 [2022-01-18 12:39:45,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231071559] [2022-01-18 12:39:45,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:39:45,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-01-18 12:39:45,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:39:45,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-01-18 12:39:45,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=775, Invalid=9714, Unknown=17, NotChecked=0, Total=10506 [2022-01-18 12:39:45,663 INFO L87 Difference]: Start difference. First operand 2560 states and 6623 transitions. Second operand has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:40:03,791 WARN L228 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 93 DAG size of output: 88 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:40:21,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:40:21,070 INFO L93 Difference]: Finished difference Result 5263 states and 13192 transitions. [2022-01-18 12:40:21,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-01-18 12:40:21,071 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 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 133 [2022-01-18 12:40:21,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:40:21,081 INFO L225 Difference]: With dead ends: 5263 [2022-01-18 12:40:21,081 INFO L226 Difference]: Without dead ends: 4406 [2022-01-18 12:40:21,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 232 SyntacticMatches, 25 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16276 ImplicationChecksByTransitivity, 45.5s TimeCoverageRelationStatistics Valid=3395, Invalid=41301, Unknown=36, NotChecked=0, Total=44732 [2022-01-18 12:40:21,084 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 3340 mSDsluCounter, 12026 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3340 SdHoareTripleChecker+Valid, 11412 SdHoareTripleChecker+Invalid, 6294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2595 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:40:21,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3340 Valid, 11412 Invalid, 6294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 3506 Invalid, 0 Unknown, 2595 Unchecked, 2.3s Time] [2022-01-18 12:40:21,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4406 states. [2022-01-18 12:40:21,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4406 to 2671. [2022-01-18 12:40:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2671 states, 2670 states have (on average 2.5719101123595505) internal successors, (6867), 2670 states have internal predecessors, (6867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:40:21,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2671 states to 2671 states and 6867 transitions. [2022-01-18 12:40:21,130 INFO L78 Accepts]: Start accepts. Automaton has 2671 states and 6867 transitions. Word has length 133 [2022-01-18 12:40:21,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:40:21,130 INFO L470 AbstractCegarLoop]: Abstraction has 2671 states and 6867 transitions. [2022-01-18 12:40:21,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:40:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2671 states and 6867 transitions. [2022-01-18 12:40:21,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:40:21,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:40:21,135 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:40:21,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-18 12:40:21,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:40:21,351 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:40:21,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:40:21,352 INFO L85 PathProgramCache]: Analyzing trace with hash 164802302, now seen corresponding path program 5 times [2022-01-18 12:40:21,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:40:21,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114589932] [2022-01-18 12:40:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:40:21,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:40:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:40:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:40:22,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:40:22,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114589932] [2022-01-18 12:40:22,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114589932] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:40:22,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640443605] [2022-01-18 12:40:22,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:40:22,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:40:22,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:40:22,753 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) [2022-01-18 12:40:22,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 12:40:22,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:40:22,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:40:22,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 54 conjunts are in the unsatisfiable core [2022-01-18 12:40:22,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:40:24,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:40:24,019 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:40:24,243 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 12:40:24,243 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 12:40:24,847 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:40:24,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:40:26,177 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:40:26,177 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 80 [2022-01-18 12:40:26,180 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2022-01-18 12:40:28,619 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:40:28,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640443605] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:40:28,620 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:40:28,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 30, 30] total 88 [2022-01-18 12:40:28,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759532840] [2022-01-18 12:40:28,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:40:28,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-01-18 12:40:28,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:40:28,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-01-18 12:40:28,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=7176, Unknown=16, NotChecked=0, Total=7656 [2022-01-18 12:40:28,621 INFO L87 Difference]: Start difference. First operand 2671 states and 6867 transitions. Second operand has 88 states, 88 states have (on average 3.6931818181818183) internal successors, (325), 88 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:40:37,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:40:37,486 INFO L93 Difference]: Finished difference Result 4669 states and 11926 transitions. [2022-01-18 12:40:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-18 12:40:37,487 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 3.6931818181818183) internal successors, (325), 88 states have internal predecessors, (325), 0 states have call successors, (0), 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 133 [2022-01-18 12:40:37,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:40:37,494 INFO L225 Difference]: With dead ends: 4669 [2022-01-18 12:40:37,495 INFO L226 Difference]: Without dead ends: 4326 [2022-01-18 12:40:37,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 227 SyntacticMatches, 7 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7606 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=1724, Invalid=22744, Unknown=24, NotChecked=0, Total=24492 [2022-01-18 12:40:37,496 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 2048 mSDsluCounter, 9371 mSDsCounter, 0 mSdLazyCounter, 3006 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 8867 SdHoareTripleChecker+Invalid, 5358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2251 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:40:37,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2048 Valid, 8867 Invalid, 5358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3006 Invalid, 0 Unknown, 2251 Unchecked, 1.6s Time] [2022-01-18 12:40:37,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2022-01-18 12:40:37,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 2820. [2022-01-18 12:40:37,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2820 states, 2819 states have (on average 2.5764455480666903) internal successors, (7263), 2819 states have internal predecessors, (7263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:40:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 7263 transitions. [2022-01-18 12:40:37,542 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 7263 transitions. Word has length 133 [2022-01-18 12:40:37,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:40:37,543 INFO L470 AbstractCegarLoop]: Abstraction has 2820 states and 7263 transitions. [2022-01-18 12:40:37,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 3.6931818181818183) internal successors, (325), 88 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:40:37,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 7263 transitions. [2022-01-18 12:40:37,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:40:37,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:40:37,547 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:40:37,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 12:40:37,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:40:37,764 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:40:37,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:40:37,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2007663518, now seen corresponding path program 6 times [2022-01-18 12:40:37,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:40:37,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298248067] [2022-01-18 12:40:37,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:40:37,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:40:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:40:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:40:39,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:40:39,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298248067] [2022-01-18 12:40:39,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298248067] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:40:39,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509083776] [2022-01-18 12:40:39,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:40:39,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:40:39,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:40:39,131 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) [2022-01-18 12:40:39,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 12:40:39,213 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:40:39,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:40:39,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 77 conjunts are in the unsatisfiable core [2022-01-18 12:40:39,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:40:41,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:40:41,146 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:40:41,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 12:40:41,462 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:40:41,463 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 10 [2022-01-18 12:40:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:40:42,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:40:43,299 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:40:43,299 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 61 [2022-01-18 12:40:43,302 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2022-01-18 12:40:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:40:45,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509083776] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:40:45,551 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:40:45,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 37] total 102 [2022-01-18 12:40:45,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299561040] [2022-01-18 12:40:45,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:40:45,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-18 12:40:45,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:40:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-18 12:40:45,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=800, Invalid=9490, Unknown=12, NotChecked=0, Total=10302 [2022-01-18 12:40:45,553 INFO L87 Difference]: Start difference. First operand 2820 states and 7263 transitions. Second operand has 102 states, 102 states have (on average 3.264705882352941) internal successors, (333), 102 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:41:00,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:41:00,092 INFO L93 Difference]: Finished difference Result 4709 states and 12040 transitions. [2022-01-18 12:41:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-18 12:41:00,093 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 3.264705882352941) internal successors, (333), 102 states have internal predecessors, (333), 0 states have call successors, (0), 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 133 [2022-01-18 12:41:00,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:41:00,100 INFO L225 Difference]: With dead ends: 4709 [2022-01-18 12:41:00,100 INFO L226 Difference]: Without dead ends: 4331 [2022-01-18 12:41:00,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 208 SyntacticMatches, 9 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12091 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=2988, Invalid=32134, Unknown=34, NotChecked=0, Total=35156 [2022-01-18 12:41:00,102 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 2942 mSDsluCounter, 9769 mSDsCounter, 0 mSdLazyCounter, 3610 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2942 SdHoareTripleChecker+Valid, 9325 SdHoareTripleChecker+Invalid, 4842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 3610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 938 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:41:00,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2942 Valid, 9325 Invalid, 4842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 3610 Invalid, 0 Unknown, 938 Unchecked, 2.7s Time] [2022-01-18 12:41:00,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4331 states. [2022-01-18 12:41:00,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4331 to 2872. [2022-01-18 12:41:00,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2872 states, 2871 states have (on average 2.5712295367467783) internal successors, (7382), 2871 states have internal predecessors, (7382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:41:00,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 7382 transitions. [2022-01-18 12:41:00,145 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 7382 transitions. Word has length 133 [2022-01-18 12:41:00,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:41:00,145 INFO L470 AbstractCegarLoop]: Abstraction has 2872 states and 7382 transitions. [2022-01-18 12:41:00,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 3.264705882352941) internal successors, (333), 102 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:41:00,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 7382 transitions. [2022-01-18 12:41:00,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:41:00,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:41:00,150 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:41:00,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 12:41:00,363 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,SelfDestructingSolverStorable22 [2022-01-18 12:41:00,363 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:41:00,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:41:00,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1128331866, now seen corresponding path program 7 times [2022-01-18 12:41:00,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:41:00,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692112747] [2022-01-18 12:41:00,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:41:00,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:41:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:41:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:41:01,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:41:01,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692112747] [2022-01-18 12:41:01,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692112747] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:41:01,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675532950] [2022-01-18 12:41:01,721 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:41:01,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:41:01,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:41:01,722 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) [2022-01-18 12:41:01,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 12:41:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:41:01,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 68 conjunts are in the unsatisfiable core [2022-01-18 12:41:01,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:41:03,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:41:03,618 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:41:03,917 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 12:41:03,917 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 12:41:04,529 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:41:04,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:41:05,681 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:41:05,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 87 [2022-01-18 12:41:05,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 60 [2022-01-18 12:41:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:41:29,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675532950] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:41:29,349 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:41:29,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 36] total 102 [2022-01-18 12:41:29,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309015424] [2022-01-18 12:41:29,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:41:29,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-18 12:41:29,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:41:29,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-18 12:41:29,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=773, Invalid=9515, Unknown=14, NotChecked=0, Total=10302 [2022-01-18 12:41:29,351 INFO L87 Difference]: Start difference. First operand 2872 states and 7382 transitions. Second operand has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:41:35,302 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_int| c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) (.cse0 (not (<= 0 c_~q_back~0))) (.cse2 (not (< c_~q_back~0 c_~n~0))) (.cse1 (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296))) (.cse3 (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0))) (and (= c_~C~0 (+ c_~x~0 (* (- 1) c_~C~0))) (or .cse0 (and .cse1 (= c_~s~0 c_~N~0)) .cse2 .cse3) (= (+ c_~s~0 (* (- 1) |c_thread2Thread1of1ForFork1_~j~0#1|)) 1) (or .cse0 (and .cse1 (= c_~N~0 .cse4)) .cse2 .cse3) (<= c_~N~0 1) (or .cse0 (and .cse1 (forall ((v_ArrVal_432 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_432) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) .cse2 .cse3) (< 0 c_~N~0) (or .cse0 .cse2 (and .cse1 (= (+ c_~s~0 .cse4) c_~N~0)) .cse3) (or .cse0 .cse2 (and (= c_~N~0 (+ c_~s~0 |c_thread2Thread1of1ForFork1_~j~0#1|)) .cse1) .cse3) (= c_~C~0 c_~y~0))) is different from false [2022-01-18 12:41:36,080 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (not (<= 0 c_~q_back~0))) (.cse2 (not (< c_~q_back~0 c_~n~0))) (.cse1 (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296))) (.cse4 (select (select |c_#memory_int| c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) (.cse3 (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0))) (and (= c_~C~0 (+ c_~x~0 (* (- 1) c_~C~0))) (or .cse0 (and .cse1 (= c_~s~0 c_~N~0)) .cse2 .cse3) (= (+ c_~s~0 (* (- 1) |c_thread2Thread1of1ForFork1_~j~0#1|)) 1) (or .cse0 (and .cse1 (= c_~N~0 .cse4)) .cse2 .cse3) (<= c_~N~0 1) (or .cse0 (and .cse1 (forall ((v_ArrVal_432 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_432) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) .cse2 .cse3) (< 0 c_~N~0) (or .cse0 .cse2 (and .cse1 (= (+ c_~s~0 .cse4) c_~N~0)) .cse3) (= c_~C~0 c_~y~0))) is different from false [2022-01-18 12:41:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:41:37,657 INFO L93 Difference]: Finished difference Result 4490 states and 11236 transitions. [2022-01-18 12:41:37,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-18 12:41:37,657 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 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 133 [2022-01-18 12:41:37,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:41:37,662 INFO L225 Difference]: With dead ends: 4490 [2022-01-18 12:41:37,663 INFO L226 Difference]: Without dead ends: 4055 [2022-01-18 12:41:37,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 212 SyntacticMatches, 18 SemanticMatches, 169 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 10452 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=2287, Invalid=26091, Unknown=22, NotChecked=670, Total=29070 [2022-01-18 12:41:37,664 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 2021 mSDsluCounter, 8001 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2021 SdHoareTripleChecker+Valid, 7607 SdHoareTripleChecker+Invalid, 4513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2399 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:41:37,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2021 Valid, 7607 Invalid, 4513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2009 Invalid, 0 Unknown, 2399 Unchecked, 1.1s Time] [2022-01-18 12:41:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4055 states. [2022-01-18 12:41:37,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4055 to 3017. [2022-01-18 12:41:37,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 3016 states have (on average 2.558023872679045) internal successors, (7715), 3016 states have internal predecessors, (7715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:41:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 7715 transitions. [2022-01-18 12:41:37,705 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 7715 transitions. Word has length 133 [2022-01-18 12:41:37,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:41:37,706 INFO L470 AbstractCegarLoop]: Abstraction has 3017 states and 7715 transitions. [2022-01-18 12:41:37,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:41:37,706 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 7715 transitions. [2022-01-18 12:41:37,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:41:37,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:41:37,710 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:41:37,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-18 12:41:37,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-01-18 12:41:37,927 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:41:37,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:41:37,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1355079194, now seen corresponding path program 8 times [2022-01-18 12:41:37,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:41:37,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122597558] [2022-01-18 12:41:37,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:41:37,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:41:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:41:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:41:39,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:41:39,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122597558] [2022-01-18 12:41:39,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122597558] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:41:39,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133639932] [2022-01-18 12:41:39,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:41:39,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:41:39,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:41:39,285 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) [2022-01-18 12:41:39,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 12:41:39,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:41:39,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:41:39,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 71 conjunts are in the unsatisfiable core [2022-01-18 12:41:39,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:41:41,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:41:41,158 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 12:41:41,440 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-18 12:41:41,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2022-01-18 12:41:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:41:42,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:41:43,277 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:41:43,277 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 87 [2022-01-18 12:41:43,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 60 [2022-01-18 12:42:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:42:00,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133639932] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:42:00,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:42:00,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 36] total 102 [2022-01-18 12:42:00,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98629749] [2022-01-18 12:42:00,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:42:00,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-18 12:42:00,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:42:00,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-18 12:42:00,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=773, Invalid=9513, Unknown=16, NotChecked=0, Total=10302 [2022-01-18 12:42:00,949 INFO L87 Difference]: Start difference. First operand 3017 states and 7715 transitions. Second operand has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:42:15,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:42:15,643 INFO L93 Difference]: Finished difference Result 4901 states and 12486 transitions. [2022-01-18 12:42:15,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-18 12:42:15,643 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 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 133 [2022-01-18 12:42:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:42:15,649 INFO L225 Difference]: With dead ends: 4901 [2022-01-18 12:42:15,649 INFO L226 Difference]: Without dead ends: 4718 [2022-01-18 12:42:15,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 220 SyntacticMatches, 14 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11075 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=2579, Invalid=29623, Unknown=18, NotChecked=0, Total=32220 [2022-01-18 12:42:15,651 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 2175 mSDsluCounter, 10071 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2175 SdHoareTripleChecker+Valid, 9574 SdHoareTripleChecker+Invalid, 4509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2067 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:42:15,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2175 Valid, 9574 Invalid, 4509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2409 Invalid, 0 Unknown, 2067 Unchecked, 1.2s Time] [2022-01-18 12:42:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4718 states. [2022-01-18 12:42:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4718 to 3138. [2022-01-18 12:42:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3138 states, 3137 states have (on average 2.5569014982467326) internal successors, (8021), 3137 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:42:15,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 8021 transitions. [2022-01-18 12:42:15,715 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 8021 transitions. Word has length 133 [2022-01-18 12:42:15,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:42:15,715 INFO L470 AbstractCegarLoop]: Abstraction has 3138 states and 8021 transitions. [2022-01-18 12:42:15,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:42:15,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 8021 transitions. [2022-01-18 12:42:15,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:42:15,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:42:15,722 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:42:15,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 12:42:15,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-01-18 12:42:15,926 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:42:15,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:42:15,926 INFO L85 PathProgramCache]: Analyzing trace with hash -688124230, now seen corresponding path program 9 times [2022-01-18 12:42:15,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:42:15,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197682219] [2022-01-18 12:42:15,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:42:15,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:42:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:42:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:42:17,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:42:17,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197682219] [2022-01-18 12:42:17,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197682219] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:42:17,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032085919] [2022-01-18 12:42:17,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:42:17,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:42:17,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:42:17,332 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:42:17,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 12:42:17,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:42:17,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:42:17,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-18 12:42:17,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:42:18,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:42:18,587 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:42:18,792 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 12:42:18,793 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 12:42:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:42:19,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:42:20,149 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:42:20,150 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 87 [2022-01-18 12:42:20,153 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 60 [2022-01-18 12:42:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:42:37,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032085919] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:42:37,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:42:37,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 29, 27] total 83 [2022-01-18 12:42:37,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347762253] [2022-01-18 12:42:37,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:42:37,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-01-18 12:42:37,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:42:37,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-01-18 12:42:37,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=6377, Unknown=14, NotChecked=0, Total=6806 [2022-01-18 12:42:37,882 INFO L87 Difference]: Start difference. First operand 3138 states and 8021 transitions. Second operand has 83 states, 83 states have (on average 3.9156626506024095) internal successors, (325), 83 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:42:44,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:42:44,983 INFO L93 Difference]: Finished difference Result 4542 states and 11326 transitions. [2022-01-18 12:42:44,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-18 12:42:44,983 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.9156626506024095) internal successors, (325), 83 states have internal predecessors, (325), 0 states have call successors, (0), 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 133 [2022-01-18 12:42:44,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:42:44,987 INFO L225 Difference]: With dead ends: 4542 [2022-01-18 12:42:44,988 INFO L226 Difference]: Without dead ends: 4224 [2022-01-18 12:42:44,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 228 SyntacticMatches, 7 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7875 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=1620, Invalid=23167, Unknown=19, NotChecked=0, Total=24806 [2022-01-18 12:42:44,989 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 1739 mSDsluCounter, 10335 mSDsCounter, 0 mSdLazyCounter, 3415 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 9866 SdHoareTripleChecker+Invalid, 5119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 3415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1591 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:42:44,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 9866 Invalid, 5119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 3415 Invalid, 0 Unknown, 1591 Unchecked, 1.8s Time] [2022-01-18 12:42:44,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4224 states. [2022-01-18 12:42:45,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4224 to 2959. [2022-01-18 12:42:45,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2958 states have (on average 2.5757268424611226) internal successors, (7619), 2958 states have internal predecessors, (7619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:42:45,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 7619 transitions. [2022-01-18 12:42:45,027 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 7619 transitions. Word has length 133 [2022-01-18 12:42:45,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:42:45,027 INFO L470 AbstractCegarLoop]: Abstraction has 2959 states and 7619 transitions. [2022-01-18 12:42:45,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.9156626506024095) internal successors, (325), 83 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:42:45,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 7619 transitions. [2022-01-18 12:42:45,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:42:45,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:42:45,032 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:42:45,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 12:42:45,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 12:42:45,255 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:42:45,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:42:45,255 INFO L85 PathProgramCache]: Analyzing trace with hash -725027718, now seen corresponding path program 10 times [2022-01-18 12:42:45,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:42:45,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201271062] [2022-01-18 12:42:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:42:45,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:42:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:42:46,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:42:46,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:42:46,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201271062] [2022-01-18 12:42:46,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201271062] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:42:46,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806504937] [2022-01-18 12:42:46,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:42:46,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:42:46,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:42:46,599 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:42:46,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 12:42:46,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:42:46,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:42:46,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 64 conjunts are in the unsatisfiable core [2022-01-18 12:42:46,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:42:48,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:42:48,537 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:42:48,838 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 12:42:48,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 12:42:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:42:49,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:42:50,627 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:42:50,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 87 [2022-01-18 12:42:50,631 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 60 [2022-01-18 12:42:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:42:58,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806504937] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:42:58,866 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:42:58,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 36] total 102 [2022-01-18 12:42:58,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352816744] [2022-01-18 12:42:58,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:42:58,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-18 12:42:58,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:42:58,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-18 12:42:58,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=747, Invalid=9543, Unknown=12, NotChecked=0, Total=10302 [2022-01-18 12:42:58,868 INFO L87 Difference]: Start difference. First operand 2959 states and 7619 transitions. Second operand has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:43:10,674 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (not (<= 0 c_~q_back~0))) (.cse2 (not (< c_~q_back~0 c_~n~0))) (.cse1 (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296))) (.cse3 (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0))) (and (= c_~s~0 (+ |c_thread2Thread1of1ForFork1_~j~0#1| 1)) (or .cse0 (and .cse1 (= c_~s~0 c_~N~0)) .cse2 .cse3) (or .cse0 .cse2 (and .cse1 (forall ((v_ArrVal_519 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_519) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) .cse3) (= c_~C~0 c_~x~0) (<= c_~N~0 1) (< 0 c_~N~0) (= (+ c_~y~0 (* (- 2) c_~C~0)) 0))) is different from false [2022-01-18 12:43:10,716 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_int| c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) (.cse0 (not (<= 0 c_~q_back~0))) (.cse2 (not (< c_~q_back~0 c_~n~0))) (.cse1 (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296))) (.cse3 (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0))) (and (= c_~s~0 (+ |c_thread2Thread1of1ForFork1_~j~0#1| 1)) (or .cse0 (and .cse1 (= c_~s~0 c_~N~0)) .cse2 .cse3) (or .cse0 .cse2 (and .cse1 (forall ((v_ArrVal_519 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_519) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) .cse3) (or .cse0 (and .cse1 (= c_~N~0 .cse4)) .cse2 .cse3) (= (+ c_~y~0 (* (div (- c_~x~0) (- 2)) (- 2))) 0) (<= c_~N~0 1) (= (mod c_~x~0 2) 0) (< 0 c_~N~0) (or .cse0 .cse2 (and .cse1 (= (+ c_~s~0 .cse4) c_~N~0)) .cse3) (or .cse0 .cse2 (and (= c_~N~0 (+ c_~s~0 |c_thread2Thread1of1ForFork1_~j~0#1|)) .cse1) .cse3))) is different from false [2022-01-18 12:43:12,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:43:12,809 INFO L93 Difference]: Finished difference Result 5357 states and 13343 transitions. [2022-01-18 12:43:12,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-18 12:43:12,809 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 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 133 [2022-01-18 12:43:12,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:43:12,815 INFO L225 Difference]: With dead ends: 5357 [2022-01-18 12:43:12,815 INFO L226 Difference]: Without dead ends: 5060 [2022-01-18 12:43:12,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 216 SyntacticMatches, 10 SemanticMatches, 189 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 11461 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=2916, Invalid=32588, Unknown=36, NotChecked=750, Total=36290 [2022-01-18 12:43:12,817 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 2608 mSDsluCounter, 11242 mSDsCounter, 0 mSdLazyCounter, 2926 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2608 SdHoareTripleChecker+Valid, 10301 SdHoareTripleChecker+Invalid, 7608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4496 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:43:12,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2608 Valid, 10301 Invalid, 7608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2926 Invalid, 0 Unknown, 4496 Unchecked, 1.6s Time] [2022-01-18 12:43:12,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5060 states. [2022-01-18 12:43:12,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5060 to 3099. [2022-01-18 12:43:12,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 3098 states have (on average 2.567462879276953) internal successors, (7954), 3098 states have internal predecessors, (7954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:43:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 7954 transitions. [2022-01-18 12:43:12,863 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 7954 transitions. Word has length 133 [2022-01-18 12:43:12,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:43:12,864 INFO L470 AbstractCegarLoop]: Abstraction has 3099 states and 7954 transitions. [2022-01-18 12:43:12,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:43:12,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 7954 transitions. [2022-01-18 12:43:12,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:43:12,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:43:12,868 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:43:12,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 12:43:13,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-18 12:43:13,084 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:43:13,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:43:13,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1847399286, now seen corresponding path program 11 times [2022-01-18 12:43:13,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:43:13,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212827794] [2022-01-18 12:43:13,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:43:13,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:43:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:43:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:43:14,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:43:14,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212827794] [2022-01-18 12:43:14,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212827794] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:43:14,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337855606] [2022-01-18 12:43:14,482 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:43:14,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:43:14,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:43:14,483 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:43:14,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 12:43:14,622 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:43:14,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:43:14,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 63 conjunts are in the unsatisfiable core [2022-01-18 12:43:14,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:43:15,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:43:15,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:43:16,125 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-18 12:43:16,126 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2022-01-18 12:43:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:43:16,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:43:17,653 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:43:17,654 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 87 [2022-01-18 12:43:17,657 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 60 [2022-01-18 12:43:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:43:29,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337855606] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:43:29,278 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:43:29,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 31, 27] total 86 [2022-01-18 12:43:29,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362859319] [2022-01-18 12:43:29,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:43:29,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 12:43:29,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:43:29,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 12:43:29,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=6865, Unknown=14, NotChecked=0, Total=7310 [2022-01-18 12:43:29,280 INFO L87 Difference]: Start difference. First operand 3099 states and 7954 transitions. Second operand has 86 states, 86 states have (on average 3.8488372093023258) internal successors, (331), 86 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:43:37,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:43:37,821 INFO L93 Difference]: Finished difference Result 4879 states and 12183 transitions. [2022-01-18 12:43:37,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-18 12:43:37,822 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.8488372093023258) internal successors, (331), 86 states have internal predecessors, (331), 0 states have call successors, (0), 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 133 [2022-01-18 12:43:37,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:43:37,827 INFO L225 Difference]: With dead ends: 4879 [2022-01-18 12:43:37,827 INFO L226 Difference]: Without dead ends: 4746 [2022-01-18 12:43:37,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 229 SyntacticMatches, 11 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9258 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=1876, Invalid=26827, Unknown=27, NotChecked=0, Total=28730 [2022-01-18 12:43:37,828 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1851 mSDsluCounter, 10758 mSDsCounter, 0 mSdLazyCounter, 3436 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1851 SdHoareTripleChecker+Valid, 10129 SdHoareTripleChecker+Invalid, 6390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 3436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2837 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:43:37,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1851 Valid, 10129 Invalid, 6390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 3436 Invalid, 0 Unknown, 2837 Unchecked, 1.7s Time] [2022-01-18 12:43:37,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4746 states. [2022-01-18 12:43:37,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4746 to 3080. [2022-01-18 12:43:37,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3080 states, 3079 states have (on average 2.56641766807405) internal successors, (7902), 3079 states have internal predecessors, (7902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:43:37,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 7902 transitions. [2022-01-18 12:43:37,872 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 7902 transitions. Word has length 133 [2022-01-18 12:43:37,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:43:37,872 INFO L470 AbstractCegarLoop]: Abstraction has 3080 states and 7902 transitions. [2022-01-18 12:43:37,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.8488372093023258) internal successors, (331), 86 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:43:37,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 7902 transitions. [2022-01-18 12:43:37,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:43:37,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:43:37,877 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:43:37,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 12:43:38,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 12:43:38,081 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:43:38,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:43:38,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2026816904, now seen corresponding path program 12 times [2022-01-18 12:43:38,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:43:38,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018030143] [2022-01-18 12:43:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:43:38,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:43:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:43:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:43:39,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:43:39,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018030143] [2022-01-18 12:43:39,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018030143] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:43:39,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372485855] [2022-01-18 12:43:39,351 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:43:39,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:43:39,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:43:39,352 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:43:39,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 12:43:39,582 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:43:39,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:43:39,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 72 conjunts are in the unsatisfiable core [2022-01-18 12:43:39,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:43:41,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:43:41,325 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:43:41,619 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-18 12:43:41,619 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2022-01-18 12:43:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:43:42,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:43:43,420 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:43:43,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 87 [2022-01-18 12:43:43,424 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 60 [2022-01-18 12:43:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:43:51,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372485855] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:43:51,644 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:43:51,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 37] total 102 [2022-01-18 12:43:51,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006224077] [2022-01-18 12:43:51,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:43:51,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-18 12:43:51,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:43:51,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-18 12:43:51,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=9535, Unknown=13, NotChecked=0, Total=10302 [2022-01-18 12:43:51,646 INFO L87 Difference]: Start difference. First operand 3080 states and 7902 transitions. Second operand has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:44:02,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-18 12:44:09,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:44:09,984 INFO L93 Difference]: Finished difference Result 5539 states and 13828 transitions. [2022-01-18 12:44:09,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-01-18 12:44:09,985 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 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 133 [2022-01-18 12:44:09,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:44:09,990 INFO L225 Difference]: With dead ends: 5539 [2022-01-18 12:44:09,990 INFO L226 Difference]: Without dead ends: 5125 [2022-01-18 12:44:09,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 225 SyntacticMatches, 23 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13874 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=3175, Invalid=35801, Unknown=30, NotChecked=0, Total=39006 [2022-01-18 12:44:09,992 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 2432 mSDsluCounter, 11245 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 10520 SdHoareTripleChecker+Invalid, 6996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 3121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3679 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:44:09,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2432 Valid, 10520 Invalid, 6996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 3121 Invalid, 0 Unknown, 3679 Unchecked, 4.0s Time] [2022-01-18 12:44:09,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5125 states. [2022-01-18 12:44:10,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5125 to 3413. [2022-01-18 12:44:10,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3413 states, 3412 states have (on average 2.5621336459554516) internal successors, (8742), 3412 states have internal predecessors, (8742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:44:10,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3413 states to 3413 states and 8742 transitions. [2022-01-18 12:44:10,046 INFO L78 Accepts]: Start accepts. Automaton has 3413 states and 8742 transitions. Word has length 133 [2022-01-18 12:44:10,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:44:10,046 INFO L470 AbstractCegarLoop]: Abstraction has 3413 states and 8742 transitions. [2022-01-18 12:44:10,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:44:10,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3413 states and 8742 transitions. [2022-01-18 12:44:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:44:10,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:44:10,052 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:44:10,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 12:44:10,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:44:10,256 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:44:10,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:44:10,257 INFO L85 PathProgramCache]: Analyzing trace with hash 305725790, now seen corresponding path program 13 times [2022-01-18 12:44:10,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:44:10,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068054643] [2022-01-18 12:44:10,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:44:10,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:44:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:44:11,622 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:44:11,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:44:11,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068054643] [2022-01-18 12:44:11,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068054643] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:44:11,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47468198] [2022-01-18 12:44:11,623 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:44:11,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:44:11,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:44:11,624 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:44:11,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 12:44:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:44:11,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 77 conjunts are in the unsatisfiable core [2022-01-18 12:44:11,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:44:13,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:44:13,850 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:44:14,194 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 12:44:14,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 12:44:14,858 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:44:14,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:44:16,133 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:44:16,134 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 87 [2022-01-18 12:44:16,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 60 [2022-01-18 12:44:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:44:26,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47468198] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:44:26,703 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:44:26,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 42, 40] total 110 [2022-01-18 12:44:26,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754595700] [2022-01-18 12:44:26,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:44:26,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-01-18 12:44:26,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:44:26,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-01-18 12:44:26,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=858, Invalid=11121, Unknown=11, NotChecked=0, Total=11990 [2022-01-18 12:44:26,705 INFO L87 Difference]: Start difference. First operand 3413 states and 8742 transitions. Second operand has 110 states, 110 states have (on average 3.081818181818182) internal successors, (339), 110 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:44:34,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:44:34,651 INFO L93 Difference]: Finished difference Result 5121 states and 12914 transitions. [2022-01-18 12:44:34,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 12:44:34,651 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 3.081818181818182) internal successors, (339), 110 states have internal predecessors, (339), 0 states have call successors, (0), 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 133 [2022-01-18 12:44:34,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:44:34,656 INFO L225 Difference]: With dead ends: 5121 [2022-01-18 12:44:34,656 INFO L226 Difference]: Without dead ends: 4737 [2022-01-18 12:44:34,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 212 SyntacticMatches, 13 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9877 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=2216, Invalid=26838, Unknown=16, NotChecked=0, Total=29070 [2022-01-18 12:44:34,658 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 1980 mSDsluCounter, 9993 mSDsCounter, 0 mSdLazyCounter, 2615 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1980 SdHoareTripleChecker+Valid, 9412 SdHoareTripleChecker+Invalid, 5190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2492 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:44:34,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1980 Valid, 9412 Invalid, 5190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2615 Invalid, 0 Unknown, 2492 Unchecked, 1.3s Time] [2022-01-18 12:44:34,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4737 states. [2022-01-18 12:44:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4737 to 3615. [2022-01-18 12:44:34,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3615 states, 3614 states have (on average 2.557830658550083) internal successors, (9244), 3614 states have internal predecessors, (9244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:44:34,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 9244 transitions. [2022-01-18 12:44:34,701 INFO L78 Accepts]: Start accepts. Automaton has 3615 states and 9244 transitions. Word has length 133 [2022-01-18 12:44:34,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:44:34,701 INFO L470 AbstractCegarLoop]: Abstraction has 3615 states and 9244 transitions. [2022-01-18 12:44:34,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 3.081818181818182) internal successors, (339), 110 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:44:34,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3615 states and 9244 transitions. [2022-01-18 12:44:34,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:44:34,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:44:34,708 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:44:34,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 12:44:34,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:44:34,912 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:44:34,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:44:34,912 INFO L85 PathProgramCache]: Analyzing trace with hash 792222526, now seen corresponding path program 14 times [2022-01-18 12:44:34,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:44:34,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581444541] [2022-01-18 12:44:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:44:34,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:44:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:44:36,225 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:44:36,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:44:36,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581444541] [2022-01-18 12:44:36,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581444541] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:44:36,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317740984] [2022-01-18 12:44:36,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:44:36,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:44:36,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:44:36,227 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:44:36,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 12:44:36,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:44:36,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:44:36,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 72 conjunts are in the unsatisfiable core [2022-01-18 12:44:36,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:44:38,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:44:38,078 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:44:38,397 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-18 12:44:38,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2022-01-18 12:44:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:44:39,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:44:40,138 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:44:40,139 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 87 [2022-01-18 12:44:40,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 60 [2022-01-18 12:44:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:44:58,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317740984] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:44:58,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:44:58,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 36] total 102 [2022-01-18 12:44:58,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741085440] [2022-01-18 12:44:58,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:44:58,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-18 12:44:58,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:44:58,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-18 12:44:58,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=751, Invalid=9542, Unknown=9, NotChecked=0, Total=10302 [2022-01-18 12:44:58,600 INFO L87 Difference]: Start difference. First operand 3615 states and 9244 transitions. Second operand has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:45:10,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:45:10,008 INFO L93 Difference]: Finished difference Result 5516 states and 13916 transitions. [2022-01-18 12:45:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-18 12:45:10,009 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 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 133 [2022-01-18 12:45:10,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:45:10,015 INFO L225 Difference]: With dead ends: 5516 [2022-01-18 12:45:10,015 INFO L226 Difference]: Without dead ends: 5063 [2022-01-18 12:45:10,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 224 SyntacticMatches, 24 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11940 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=2364, Invalid=28776, Unknown=12, NotChecked=0, Total=31152 [2022-01-18 12:45:10,016 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 1951 mSDsluCounter, 10251 mSDsCounter, 0 mSdLazyCounter, 3035 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 9872 SdHoareTripleChecker+Invalid, 5831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 3035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2657 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:45:10,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1951 Valid, 9872 Invalid, 5831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 3035 Invalid, 0 Unknown, 2657 Unchecked, 1.7s Time] [2022-01-18 12:45:10,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5063 states. [2022-01-18 12:45:10,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5063 to 3755. [2022-01-18 12:45:10,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 3754 states have (on average 2.5546084176878) internal successors, (9590), 3754 states have internal predecessors, (9590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:45:10,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 9590 transitions. [2022-01-18 12:45:10,066 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 9590 transitions. Word has length 133 [2022-01-18 12:45:10,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:45:10,067 INFO L470 AbstractCegarLoop]: Abstraction has 3755 states and 9590 transitions. [2022-01-18 12:45:10,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:45:10,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 9590 transitions. [2022-01-18 12:45:10,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:45:10,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:45:10,072 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:45:10,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 12:45:10,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:45:10,287 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:45:10,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:45:10,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1588361590, now seen corresponding path program 15 times [2022-01-18 12:45:10,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:45:10,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481427577] [2022-01-18 12:45:10,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:45:10,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:45:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:45:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:45:11,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:45:11,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481427577] [2022-01-18 12:45:11,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481427577] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:45:11,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776255087] [2022-01-18 12:45:11,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:45:11,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:45:11,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:45:11,648 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:45:11,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 12:45:11,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:45:11,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:45:11,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-18 12:45:11,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:45:12,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:45:12,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:45:13,054 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 12:45:13,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 12:45:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:45:13,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:45:14,515 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:45:14,516 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 65 [2022-01-18 12:45:14,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2022-01-18 12:45:15,810 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:45:15,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776255087] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:45:15,810 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:45:15,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 29, 27] total 83 [2022-01-18 12:45:15,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800843344] [2022-01-18 12:45:15,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:45:15,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-01-18 12:45:15,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:45:15,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-01-18 12:45:15,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=6379, Unknown=7, NotChecked=0, Total=6806 [2022-01-18 12:45:15,812 INFO L87 Difference]: Start difference. First operand 3755 states and 9590 transitions. Second operand has 83 states, 83 states have (on average 3.783132530120482) internal successors, (314), 83 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:45:22,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:45:22,903 INFO L93 Difference]: Finished difference Result 5050 states and 12756 transitions. [2022-01-18 12:45:22,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 12:45:22,903 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.783132530120482) internal successors, (314), 83 states have internal predecessors, (314), 0 states have call successors, (0), 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 133 [2022-01-18 12:45:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:45:22,909 INFO L225 Difference]: With dead ends: 5050 [2022-01-18 12:45:22,909 INFO L226 Difference]: Without dead ends: 4825 [2022-01-18 12:45:22,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 225 SyntacticMatches, 7 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5988 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1473, Invalid=18538, Unknown=11, NotChecked=0, Total=20022 [2022-01-18 12:45:22,911 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 1546 mSDsluCounter, 9330 mSDsCounter, 0 mSdLazyCounter, 3052 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 8886 SdHoareTripleChecker+Invalid, 4871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1756 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:45:22,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 8886 Invalid, 4871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3052 Invalid, 0 Unknown, 1756 Unchecked, 1.9s Time] [2022-01-18 12:45:22,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2022-01-18 12:45:22,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 3765. [2022-01-18 12:45:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3765 states, 3764 states have (on average 2.553134962805526) internal successors, (9610), 3764 states have internal predecessors, (9610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:45:22,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 9610 transitions. [2022-01-18 12:45:22,964 INFO L78 Accepts]: Start accepts. Automaton has 3765 states and 9610 transitions. Word has length 133 [2022-01-18 12:45:22,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:45:22,965 INFO L470 AbstractCegarLoop]: Abstraction has 3765 states and 9610 transitions. [2022-01-18 12:45:22,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.783132530120482) internal successors, (314), 83 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:45:22,965 INFO L276 IsEmpty]: Start isEmpty. Operand 3765 states and 9610 transitions. [2022-01-18 12:45:22,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:45:22,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:45:22,970 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:45:22,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 12:45:23,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:45:23,186 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:45:23,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:45:23,186 INFO L85 PathProgramCache]: Analyzing trace with hash 286572404, now seen corresponding path program 16 times [2022-01-18 12:45:23,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:45:23,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388398283] [2022-01-18 12:45:23,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:45:23,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:45:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:45:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:45:24,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:45:24,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388398283] [2022-01-18 12:45:24,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388398283] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:45:24,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139869522] [2022-01-18 12:45:24,483 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:45:24,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:45:24,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:45:24,484 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:45:24,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 12:45:24,577 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:45:24,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:45:24,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 64 conjunts are in the unsatisfiable core [2022-01-18 12:45:24,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:45:26,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:45:26,381 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:45:26,674 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 12:45:26,674 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 12:45:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:45:27,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:45:28,499 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:45:28,499 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 61 [2022-01-18 12:45:28,502 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2022-01-18 12:45:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:45:30,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139869522] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:45:30,818 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:45:30,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 37] total 102 [2022-01-18 12:45:30,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968951684] [2022-01-18 12:45:30,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:45:30,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-18 12:45:30,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:45:30,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-18 12:45:30,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=720, Invalid=9573, Unknown=9, NotChecked=0, Total=10302 [2022-01-18 12:45:30,819 INFO L87 Difference]: Start difference. First operand 3765 states and 9610 transitions. Second operand has 102 states, 102 states have (on average 3.215686274509804) internal successors, (328), 102 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:45:46,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:45:48,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:45:50,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-18 12:45:52,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:45:52,177 INFO L93 Difference]: Finished difference Result 5666 states and 14265 transitions. [2022-01-18 12:45:52,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-18 12:45:52,178 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 3.215686274509804) internal successors, (328), 102 states have internal predecessors, (328), 0 states have call successors, (0), 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 133 [2022-01-18 12:45:52,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:45:52,184 INFO L225 Difference]: With dead ends: 5666 [2022-01-18 12:45:52,184 INFO L226 Difference]: Without dead ends: 5319 [2022-01-18 12:45:52,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 218 SyntacticMatches, 14 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12654 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=2781, Invalid=35008, Unknown=41, NotChecked=0, Total=37830 [2022-01-18 12:45:52,186 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 2402 mSDsluCounter, 10828 mSDsCounter, 0 mSdLazyCounter, 4543 mSolverCounterSat, 286 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 10319 SdHoareTripleChecker+Invalid, 6207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 4543 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 1375 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:45:52,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2402 Valid, 10319 Invalid, 6207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 4543 Invalid, 3 Unknown, 1375 Unchecked, 9.5s Time] [2022-01-18 12:45:52,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5319 states. [2022-01-18 12:45:52,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5319 to 3807. [2022-01-18 12:45:52,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3806 states have (on average 2.545717288491855) internal successors, (9689), 3806 states have internal predecessors, (9689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:45:52,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 9689 transitions. [2022-01-18 12:45:52,240 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 9689 transitions. Word has length 133 [2022-01-18 12:45:52,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:45:52,240 INFO L470 AbstractCegarLoop]: Abstraction has 3807 states and 9689 transitions. [2022-01-18 12:45:52,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 3.215686274509804) internal successors, (328), 102 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:45:52,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 9689 transitions. [2022-01-18 12:45:52,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:45:52,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:45:52,245 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:45:52,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 12:45:52,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:45:52,447 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:45:52,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:45:52,448 INFO L85 PathProgramCache]: Analyzing trace with hash 393993568, now seen corresponding path program 17 times [2022-01-18 12:45:52,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:45:52,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075665417] [2022-01-18 12:45:52,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:45:52,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:45:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:45:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:45:53,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:45:53,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075665417] [2022-01-18 12:45:53,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075665417] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:45:53,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642092146] [2022-01-18 12:45:53,806 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:45:53,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:45:53,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:45:53,807 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:45:53,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 12:45:53,933 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:45:53,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:45:53,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 72 conjunts are in the unsatisfiable core [2022-01-18 12:45:53,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:45:55,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:45:55,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:45:55,968 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 12:45:55,968 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 12:45:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:45:56,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:45:57,692 WARN L838 $PredicateComparison]: unable to prove that (or (<= c_~n~0 (+ c_~q_front~0 1)) (<= c_~n~0 0) (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0) (and (forall ((v_ArrVal_722 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_722) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))) (= (mod (+ c_~y~0 (* c_~C~0 2)) 4294967296) (mod (+ c_~C~0 c_~x~0) 4294967296)))) is different from false [2022-01-18 12:45:57,828 WARN L838 $PredicateComparison]: unable to prove that (or (< (+ |c_thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) (<= c_~n~0 (+ c_~q_front~0 1)) (<= c_~n~0 0) (and (forall ((v_ArrVal_722 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_722) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))) (= (mod (+ c_~y~0 (* c_~C~0 2)) 4294967296) (mod (+ c_~C~0 c_~x~0) 4294967296)))) is different from false [2022-01-18 12:45:57,840 WARN L838 $PredicateComparison]: unable to prove that (or (< (+ |c_thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) (<= c_~n~0 (+ c_~q_front~0 1)) (and (forall ((~C~0 Int)) (let ((.cse0 (* 2 ~C~0))) (= (mod (+ c_~x~0 .cse0) 4294967296) (mod (+ c_~y~0 .cse0) 4294967296)))) (forall ((v_ArrVal_722 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_722) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (<= c_~n~0 0)) is different from false [2022-01-18 12:45:57,870 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:45:57,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 59 [2022-01-18 12:45:57,874 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2022-01-18 12:46:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:46:00,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642092146] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:46:00,510 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:46:00,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 38] total 104 [2022-01-18 12:46:00,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4853067] [2022-01-18 12:46:00,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:46:00,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-01-18 12:46:00,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:46:00,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-01-18 12:46:00,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=686, Invalid=9417, Unknown=9, NotChecked=600, Total=10712 [2022-01-18 12:46:00,512 INFO L87 Difference]: Start difference. First operand 3807 states and 9689 transitions. Second operand has 104 states, 104 states have (on average 3.2596153846153846) internal successors, (339), 104 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:46:21,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:46:21,297 INFO L93 Difference]: Finished difference Result 5870 states and 14832 transitions. [2022-01-18 12:46:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-18 12:46:21,298 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.2596153846153846) internal successors, (339), 104 states have internal predecessors, (339), 0 states have call successors, (0), 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 133 [2022-01-18 12:46:21,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:46:21,304 INFO L225 Difference]: With dead ends: 5870 [2022-01-18 12:46:21,304 INFO L226 Difference]: Without dead ends: 5497 [2022-01-18 12:46:21,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 217 SyntacticMatches, 9 SemanticMatches, 185 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 10524 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=2553, Invalid=31105, Unknown=26, NotChecked=1098, Total=34782 [2022-01-18 12:46:21,305 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 2403 mSDsluCounter, 10537 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 9915 SdHoareTripleChecker+Invalid, 7542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4559 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:46:21,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2403 Valid, 9915 Invalid, 7542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2869 Invalid, 0 Unknown, 4559 Unchecked, 3.2s Time] [2022-01-18 12:46:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5497 states. [2022-01-18 12:46:21,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5497 to 4129. [2022-01-18 12:46:21,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4129 states, 4128 states have (on average 2.539970930232558) internal successors, (10485), 4128 states have internal predecessors, (10485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:46:21,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4129 states to 4129 states and 10485 transitions. [2022-01-18 12:46:21,353 INFO L78 Accepts]: Start accepts. Automaton has 4129 states and 10485 transitions. Word has length 133 [2022-01-18 12:46:21,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:46:21,353 INFO L470 AbstractCegarLoop]: Abstraction has 4129 states and 10485 transitions. [2022-01-18 12:46:21,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.2596153846153846) internal successors, (339), 104 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:46:21,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4129 states and 10485 transitions. [2022-01-18 12:46:21,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:46:21,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:46:21,357 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:46:21,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 12:46:21,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:46:21,558 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:46:21,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:46:21,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1633873076, now seen corresponding path program 18 times [2022-01-18 12:46:21,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:46:21,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473628464] [2022-01-18 12:46:21,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:46:21,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:46:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:46:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:46:22,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:46:22,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473628464] [2022-01-18 12:46:22,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473628464] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:46:22,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120548703] [2022-01-18 12:46:22,902 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:46:22,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:46:22,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:46:22,903 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:46:22,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 12:46:23,052 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:46:23,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:46:23,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 79 conjunts are in the unsatisfiable core [2022-01-18 12:46:23,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:46:24,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:46:24,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:46:25,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 12:46:25,262 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:46:25,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 10 [2022-01-18 12:46:25,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:46:25,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:46:27,304 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:46:27,304 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 59 [2022-01-18 12:46:27,307 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2022-01-18 12:46:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:46:29,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120548703] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:46:29,983 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:46:29,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 38] total 104 [2022-01-18 12:46:29,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036225622] [2022-01-18 12:46:29,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:46:29,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-01-18 12:46:29,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:46:29,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-01-18 12:46:29,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=779, Invalid=9923, Unknown=10, NotChecked=0, Total=10712 [2022-01-18 12:46:29,985 INFO L87 Difference]: Start difference. First operand 4129 states and 10485 transitions. Second operand has 104 states, 104 states have (on average 3.2596153846153846) internal successors, (339), 104 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:46:41,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:46:43,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:46:45,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:46:47,128 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:46:49,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:47:11,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:47:11,959 INFO L93 Difference]: Finished difference Result 6527 states and 16462 transitions. [2022-01-18 12:47:11,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-01-18 12:47:11,960 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.2596153846153846) internal successors, (339), 104 states have internal predecessors, (339), 0 states have call successors, (0), 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 133 [2022-01-18 12:47:11,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:47:11,967 INFO L225 Difference]: With dead ends: 6527 [2022-01-18 12:47:11,967 INFO L226 Difference]: Without dead ends: 6076 [2022-01-18 12:47:11,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 206 SyntacticMatches, 10 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16949 ImplicationChecksByTransitivity, 29.8s TimeCoverageRelationStatistics Valid=3501, Invalid=45087, Unknown=32, NotChecked=0, Total=48620 [2022-01-18 12:47:11,969 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 2485 mSDsluCounter, 11811 mSDsCounter, 0 mSdLazyCounter, 5260 mSolverCounterSat, 319 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2485 SdHoareTripleChecker+Valid, 11134 SdHoareTripleChecker+Invalid, 7081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 5260 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 1498 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:47:11,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2485 Valid, 11134 Invalid, 7081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 5260 Invalid, 4 Unknown, 1498 Unchecked, 16.9s Time] [2022-01-18 12:47:11,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6076 states. [2022-01-18 12:47:12,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6076 to 4283. [2022-01-18 12:47:12,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4283 states, 4282 states have (on average 2.531527323680523) internal successors, (10840), 4282 states have internal predecessors, (10840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:47:12,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4283 states to 4283 states and 10840 transitions. [2022-01-18 12:47:12,021 INFO L78 Accepts]: Start accepts. Automaton has 4283 states and 10840 transitions. Word has length 133 [2022-01-18 12:47:12,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:47:12,021 INFO L470 AbstractCegarLoop]: Abstraction has 4283 states and 10840 transitions. [2022-01-18 12:47:12,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.2596153846153846) internal successors, (339), 104 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:47:12,021 INFO L276 IsEmpty]: Start isEmpty. Operand 4283 states and 10840 transitions. [2022-01-18 12:47:12,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:47:12,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:47:12,025 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:47:12,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 12:47:12,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-01-18 12:47:12,226 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:47:12,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:47:12,226 INFO L85 PathProgramCache]: Analyzing trace with hash -491151136, now seen corresponding path program 19 times [2022-01-18 12:47:12,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:47:12,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479764379] [2022-01-18 12:47:12,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:47:12,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:47:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:47:14,084 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:47:14,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:47:14,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479764379] [2022-01-18 12:47:14,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479764379] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:47:14,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832127586] [2022-01-18 12:47:14,084 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:47:14,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:47:14,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:47:14,085 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:47:14,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 12:47:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:47:14,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 73 conjunts are in the unsatisfiable core [2022-01-18 12:47:14,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:47:16,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:47:16,003 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:47:16,351 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-18 12:47:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:47:16,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:47:18,126 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:47:18,126 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 87 [2022-01-18 12:47:18,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 60 [2022-01-18 12:47:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:47:30,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832127586] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:47:30,581 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:47:30,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 38, 37] total 109 [2022-01-18 12:47:30,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448837422] [2022-01-18 12:47:30,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:47:30,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-01-18 12:47:30,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:47:30,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-01-18 12:47:30,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=785, Invalid=10981, Unknown=6, NotChecked=0, Total=11772 [2022-01-18 12:47:30,582 INFO L87 Difference]: Start difference. First operand 4283 states and 10840 transitions. Second operand has 109 states, 109 states have (on average 3.2477064220183487) internal successors, (354), 109 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:47:45,431 WARN L228 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 74 DAG size of output: 73 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:47:54,797 WARN L228 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 80 DAG size of output: 73 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:47:56,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:47:56,769 INFO L93 Difference]: Finished difference Result 6087 states and 15324 transitions. [2022-01-18 12:47:56,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-18 12:47:56,770 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 3.2477064220183487) internal successors, (354), 109 states have internal predecessors, (354), 0 states have call successors, (0), 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 133 [2022-01-18 12:47:56,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:47:56,776 INFO L225 Difference]: With dead ends: 6087 [2022-01-18 12:47:56,777 INFO L226 Difference]: Without dead ends: 5619 [2022-01-18 12:47:56,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 220 SyntacticMatches, 11 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13499 ImplicationChecksByTransitivity, 37.5s TimeCoverageRelationStatistics Valid=2972, Invalid=34055, Unknown=29, NotChecked=0, Total=37056 [2022-01-18 12:47:56,778 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 2538 mSDsluCounter, 10218 mSDsCounter, 0 mSdLazyCounter, 3979 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2538 SdHoareTripleChecker+Valid, 9764 SdHoareTripleChecker+Invalid, 6526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 3979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2407 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:47:56,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2538 Valid, 9764 Invalid, 6526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 3979 Invalid, 0 Unknown, 2407 Unchecked, 2.0s Time] [2022-01-18 12:47:56,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5619 states. [2022-01-18 12:47:56,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5619 to 4375. [2022-01-18 12:47:56,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4375 states, 4374 states have (on average 2.535893918609968) internal successors, (11092), 4374 states have internal predecessors, (11092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:47:56,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4375 states to 4375 states and 11092 transitions. [2022-01-18 12:47:56,828 INFO L78 Accepts]: Start accepts. Automaton has 4375 states and 11092 transitions. Word has length 133 [2022-01-18 12:47:56,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:47:56,828 INFO L470 AbstractCegarLoop]: Abstraction has 4375 states and 11092 transitions. [2022-01-18 12:47:56,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 3.2477064220183487) internal successors, (354), 109 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:47:56,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4375 states and 11092 transitions. [2022-01-18 12:47:56,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:47:56,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:47:56,833 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:47:56,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 12:47:57,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-01-18 12:47:57,035 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:47:57,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:47:57,035 INFO L85 PathProgramCache]: Analyzing trace with hash 791484664, now seen corresponding path program 20 times [2022-01-18 12:47:57,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:47:57,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509581103] [2022-01-18 12:47:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:47:57,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:47:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:47:58,402 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:47:58,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:47:58,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509581103] [2022-01-18 12:47:58,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509581103] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:47:58,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704418885] [2022-01-18 12:47:58,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:47:58,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:47:58,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:47:58,403 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:47:58,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 12:47:58,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:47:58,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:47:58,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 72 conjunts are in the unsatisfiable core [2022-01-18 12:47:58,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:48:00,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:48:00,255 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:48:00,598 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 12:48:00,599 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 12:48:01,202 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:01,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:48:02,006 WARN L838 $PredicateComparison]: unable to prove that (or (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296)) (forall ((v_ArrVal_809 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_809) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (<= c_~n~0 (+ c_~q_front~0 1)) (<= c_~n~0 0) (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0)) is different from false [2022-01-18 12:48:02,030 WARN L838 $PredicateComparison]: unable to prove that (or (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296)) (forall ((v_ArrVal_809 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_809) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (< (+ |c_thread1Thread1of1ForFork0_#t~post1#1| 1) c_~N~0) (<= c_~n~0 (+ c_~q_front~0 1)) (<= c_~n~0 0)) is different from false [2022-01-18 12:48:02,044 WARN L838 $PredicateComparison]: unable to prove that (or (< (+ |c_thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296)) (forall ((v_ArrVal_809 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_809) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (<= c_~n~0 (+ c_~q_front~0 1)) (<= c_~n~0 0)) is different from false [2022-01-18 12:48:02,073 WARN L838 $PredicateComparison]: unable to prove that (or (< (+ |c_thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) (<= c_~n~0 (+ c_~q_front~0 1)) (<= c_~n~0 0) (and (forall ((aux_mod_aux_mod_~C~0_30_61 Int) (aux_div_aux_mod_~C~0_30_61 Int)) (let ((.cse2 (* aux_div_aux_mod_~C~0_30_61 4294967296))) (let ((.cse1 (+ .cse2 aux_mod_aux_mod_~C~0_30_61)) (.cse0 (* 4294967295 c_~x~0))) (or (<= (+ .cse0 c_~y~0 4294967296) .cse1) (= (+ (* (- 1) c_~y~0) .cse2 (* c_~x~0 (- 4294967295)) aux_mod_aux_mod_~C~0_30_61) aux_mod_aux_mod_~C~0_30_61) (>= aux_mod_aux_mod_~C~0_30_61 4294967296) (< .cse1 (+ .cse0 c_~y~0)) (> 0 aux_mod_aux_mod_~C~0_30_61))))) (forall ((v_ArrVal_809 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_809) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))))) is different from false [2022-01-18 12:48:02,100 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:48:02,101 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 87 [2022-01-18 12:48:02,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 60 [2022-01-18 12:48:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:05,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704418885] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:48:05,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:48:05,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 36] total 102 [2022-01-18 12:48:05,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508286192] [2022-01-18 12:48:05,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:48:05,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-18 12:48:05,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:05,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-18 12:48:05,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=655, Invalid=8863, Unknown=4, NotChecked=780, Total=10302 [2022-01-18 12:48:05,927 INFO L87 Difference]: Start difference. First operand 4375 states and 11092 transitions. Second operand has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:09,731 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (<= c_~n~0 (+ c_~q_front~0 1))) (.cse1 (<= c_~n~0 0))) (and (or (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296)) (= c_~N~0 (select (select |c_#memory_int| c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))) .cse0 .cse1 (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0)) (or (< (+ |c_thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) .cse0 .cse1 (and (forall ((aux_mod_aux_mod_~C~0_30_61 Int) (aux_div_aux_mod_~C~0_30_61 Int)) (let ((.cse4 (* aux_div_aux_mod_~C~0_30_61 4294967296))) (let ((.cse3 (+ .cse4 aux_mod_aux_mod_~C~0_30_61)) (.cse2 (* 4294967295 c_~x~0))) (or (<= (+ .cse2 c_~y~0 4294967296) .cse3) (= (+ (* (- 1) c_~y~0) .cse4 (* c_~x~0 (- 4294967295)) aux_mod_aux_mod_~C~0_30_61) aux_mod_aux_mod_~C~0_30_61) (>= aux_mod_aux_mod_~C~0_30_61 4294967296) (< .cse3 (+ .cse2 c_~y~0)) (> 0 aux_mod_aux_mod_~C~0_30_61))))) (forall ((v_ArrVal_809 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_809) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))))))) is different from false [2022-01-18 12:48:19,078 WARN L228 SmtUtils]: Spent 8.26s on a formula simplification. DAG size of input: 102 DAG size of output: 91 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:48:37,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:37,433 INFO L93 Difference]: Finished difference Result 6596 states and 16363 transitions. [2022-01-18 12:48:37,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 12:48:37,434 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 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 133 [2022-01-18 12:48:37,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:37,441 INFO L225 Difference]: With dead ends: 6596 [2022-01-18 12:48:37,441 INFO L226 Difference]: Without dead ends: 6332 [2022-01-18 12:48:37,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 212 SyntacticMatches, 12 SemanticMatches, 168 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 8962 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=2155, Invalid=24918, Unknown=7, NotChecked=1650, Total=28730 [2022-01-18 12:48:37,442 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 2071 mSDsluCounter, 8392 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 7880 SdHoareTripleChecker+Invalid, 8481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6049 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:37,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2071 Valid, 7880 Invalid, 8481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2334 Invalid, 0 Unknown, 6049 Unchecked, 1.7s Time] [2022-01-18 12:48:37,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2022-01-18 12:48:37,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 4506. [2022-01-18 12:48:37,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4505 states have (on average 2.549167591564928) internal successors, (11484), 4505 states have internal predecessors, (11484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:37,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 11484 transitions. [2022-01-18 12:48:37,499 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 11484 transitions. Word has length 133 [2022-01-18 12:48:37,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:37,499 INFO L470 AbstractCegarLoop]: Abstraction has 4506 states and 11484 transitions. [2022-01-18 12:48:37,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:37,499 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 11484 transitions. [2022-01-18 12:48:37,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:48:37,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:37,504 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:48:37,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-01-18 12:48:37,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 12:48:37,708 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:48:37,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:37,708 INFO L85 PathProgramCache]: Analyzing trace with hash -510304522, now seen corresponding path program 21 times [2022-01-18 12:48:37,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:37,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393405067] [2022-01-18 12:48:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:37,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:39,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:39,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393405067] [2022-01-18 12:48:39,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393405067] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:48:39,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666716576] [2022-01-18 12:48:39,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:48:39,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:48:39,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:48:39,056 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:48:39,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 12:48:39,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:48:39,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:48:39,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-18 12:48:39,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:48:40,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:48:40,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:48:40,696 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 12:48:40,697 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-18 12:48:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:48:41,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:48:42,386 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:48:42,387 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 108 [2022-01-18 12:48:42,393 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 68 [2022-01-18 12:48:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:48:43,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666716576] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:48:43,866 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:48:43,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 30, 29] total 87 [2022-01-18 12:48:43,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504070915] [2022-01-18 12:48:43,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:48:43,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-01-18 12:48:43,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:43,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-01-18 12:48:43,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=7036, Unknown=6, NotChecked=0, Total=7482 [2022-01-18 12:48:43,868 INFO L87 Difference]: Start difference. First operand 4506 states and 11484 transitions. Second operand has 87 states, 87 states have (on average 3.735632183908046) internal successors, (325), 87 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:51,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:51,484 INFO L93 Difference]: Finished difference Result 6052 states and 15174 transitions. [2022-01-18 12:48:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-18 12:48:51,484 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 3.735632183908046) internal successors, (325), 87 states have internal predecessors, (325), 0 states have call successors, (0), 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 133 [2022-01-18 12:48:51,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:51,491 INFO L225 Difference]: With dead ends: 6052 [2022-01-18 12:48:51,492 INFO L226 Difference]: Without dead ends: 5712 [2022-01-18 12:48:51,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 223 SyntacticMatches, 5 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 7289 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1659, Invalid=22821, Unknown=12, NotChecked=0, Total=24492 [2022-01-18 12:48:51,493 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 1730 mSDsluCounter, 8060 mSDsCounter, 0 mSdLazyCounter, 2940 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 7678 SdHoareTripleChecker+Invalid, 4610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1591 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:51,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1730 Valid, 7678 Invalid, 4610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2940 Invalid, 0 Unknown, 1591 Unchecked, 1.9s Time] [2022-01-18 12:48:51,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5712 states. [2022-01-18 12:48:51,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5712 to 4469. [2022-01-18 12:48:51,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4468 states have (on average 2.5414055505819158) internal successors, (11355), 4468 states have internal predecessors, (11355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:51,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 11355 transitions. [2022-01-18 12:48:51,574 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 11355 transitions. Word has length 133 [2022-01-18 12:48:51,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:51,575 INFO L470 AbstractCegarLoop]: Abstraction has 4469 states and 11355 transitions. [2022-01-18 12:48:51,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 3.735632183908046) internal successors, (325), 87 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:51,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 11355 transitions. [2022-01-18 12:48:51,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:48:51,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:51,580 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:48:51,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 12:48:51,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:48:51,795 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:48:51,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:51,796 INFO L85 PathProgramCache]: Analyzing trace with hash -402883358, now seen corresponding path program 22 times [2022-01-18 12:48:51,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:51,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649983685] [2022-01-18 12:48:51,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:51,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:53,542 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:53,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:53,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649983685] [2022-01-18 12:48:53,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649983685] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:48:53,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546915634] [2022-01-18 12:48:53,542 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:48:53,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:48:53,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:48:53,543 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:48:53,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 12:48:53,784 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:48:53,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:48:53,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-18 12:48:53,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:48:55,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:48:55,530 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:48:55,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 12:48:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:56,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:48:57,970 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:48:57,971 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 59 [2022-01-18 12:48:57,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2022-01-18 12:49:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:01,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546915634] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:49:01,004 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:49:01,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 38, 38] total 108 [2022-01-18 12:49:01,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321957194] [2022-01-18 12:49:01,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:49:01,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-01-18 12:49:01,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:49:01,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-01-18 12:49:01,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=719, Invalid=10833, Unknown=4, NotChecked=0, Total=11556 [2022-01-18 12:49:01,006 INFO L87 Difference]: Start difference. First operand 4469 states and 11355 transitions. Second operand has 108 states, 108 states have (on average 3.2777777777777777) internal successors, (354), 108 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:40,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:49:57,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:49:57,675 INFO L93 Difference]: Finished difference Result 7577 states and 19184 transitions. [2022-01-18 12:49:57,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-18 12:49:57,675 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 3.2777777777777777) internal successors, (354), 108 states have internal predecessors, (354), 0 states have call successors, (0), 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 133 [2022-01-18 12:49:57,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:49:57,683 INFO L225 Difference]: With dead ends: 7577 [2022-01-18 12:49:57,684 INFO L226 Difference]: Without dead ends: 7056 [2022-01-18 12:49:57,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 212 SyntacticMatches, 17 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16447 ImplicationChecksByTransitivity, 52.3s TimeCoverageRelationStatistics Valid=4248, Invalid=43435, Unknown=59, NotChecked=0, Total=47742 [2022-01-18 12:49:57,686 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 4294 mSDsluCounter, 11364 mSDsCounter, 0 mSdLazyCounter, 6439 mSolverCounterSat, 698 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4294 SdHoareTripleChecker+Valid, 10653 SdHoareTripleChecker+Invalid, 8832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 6439 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1694 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:49:57,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4294 Valid, 10653 Invalid, 8832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [698 Valid, 6439 Invalid, 1 Unknown, 1694 Unchecked, 9.7s Time] [2022-01-18 12:49:57,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7056 states. [2022-01-18 12:49:57,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7056 to 4835. [2022-01-18 12:49:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4835 states, 4834 states have (on average 2.552130740587505) internal successors, (12337), 4834 states have internal predecessors, (12337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:57,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4835 states to 4835 states and 12337 transitions. [2022-01-18 12:49:57,743 INFO L78 Accepts]: Start accepts. Automaton has 4835 states and 12337 transitions. Word has length 133 [2022-01-18 12:49:57,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:49:57,743 INFO L470 AbstractCegarLoop]: Abstraction has 4835 states and 12337 transitions. [2022-01-18 12:49:57,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 3.2777777777777777) internal successors, (354), 108 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:57,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4835 states and 12337 transitions. [2022-01-18 12:49:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:49:57,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:49:57,748 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:49:57,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-01-18 12:49:57,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 12:49:57,949 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:49:57,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:49:57,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1475502782, now seen corresponding path program 23 times [2022-01-18 12:49:57,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:49:57,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621922148] [2022-01-18 12:49:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:49:57,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:49:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:49:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:59,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:49:59,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621922148] [2022-01-18 12:49:59,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621922148] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:49:59,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292016764] [2022-01-18 12:49:59,352 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:49:59,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:49:59,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:49:59,353 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:49:59,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 12:49:59,505 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:49:59,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:49:59,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 63 conjunts are in the unsatisfiable core [2022-01-18 12:49:59,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:50:00,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:50:00,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:50:00,998 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-18 12:50:00,999 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2022-01-18 12:50:01,488 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:50:01,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:50:02,412 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:50:02,412 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 87 [2022-01-18 12:50:02,415 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 60 [2022-01-18 12:50:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:50:09,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292016764] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:50:09,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:50:09,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 31, 27] total 86 [2022-01-18 12:50:09,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487540283] [2022-01-18 12:50:09,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:50:09,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 12:50:09,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:50:09,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 12:50:09,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=6872, Unknown=7, NotChecked=0, Total=7310 [2022-01-18 12:50:09,378 INFO L87 Difference]: Start difference. First operand 4835 states and 12337 transitions. Second operand has 86 states, 86 states have (on average 3.8488372093023258) internal successors, (331), 86 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:15,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:50:15,005 INFO L93 Difference]: Finished difference Result 6125 states and 15521 transitions. [2022-01-18 12:50:15,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 12:50:15,006 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.8488372093023258) internal successors, (331), 86 states have internal predecessors, (331), 0 states have call successors, (0), 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 133 [2022-01-18 12:50:15,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:50:15,013 INFO L225 Difference]: With dead ends: 6125 [2022-01-18 12:50:15,013 INFO L226 Difference]: Without dead ends: 5767 [2022-01-18 12:50:15,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 227 SyntacticMatches, 7 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6372 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=1397, Invalid=18901, Unknown=8, NotChecked=0, Total=20306 [2022-01-18 12:50:15,015 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 1642 mSDsluCounter, 7680 mSDsCounter, 0 mSdLazyCounter, 2013 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 7361 SdHoareTripleChecker+Invalid, 4043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1977 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:50:15,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1642 Valid, 7361 Invalid, 4043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2013 Invalid, 0 Unknown, 1977 Unchecked, 1.0s Time] [2022-01-18 12:50:15,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5767 states. [2022-01-18 12:50:15,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5767 to 4903. [2022-01-18 12:50:15,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4903 states, 4902 states have (on average 2.554671562627499) internal successors, (12523), 4902 states have internal predecessors, (12523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4903 states to 4903 states and 12523 transitions. [2022-01-18 12:50:15,077 INFO L78 Accepts]: Start accepts. Automaton has 4903 states and 12523 transitions. Word has length 133 [2022-01-18 12:50:15,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:50:15,077 INFO L470 AbstractCegarLoop]: Abstraction has 4903 states and 12523 transitions. [2022-01-18 12:50:15,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.8488372093023258) internal successors, (331), 86 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:15,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4903 states and 12523 transitions. [2022-01-18 12:50:15,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:50:15,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:50:15,082 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:50:15,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 12:50:15,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 12:50:15,283 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:50:15,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:50:15,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1078665662, now seen corresponding path program 24 times [2022-01-18 12:50:15,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:50:15,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576114550] [2022-01-18 12:50:15,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:50:15,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:50:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:50:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:16,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:50:16,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576114550] [2022-01-18 12:50:16,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576114550] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:50:16,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364147204] [2022-01-18 12:50:16,707 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:50:16,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:50:16,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:50:16,708 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:50:16,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 12:50:16,845 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:50:16,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:50:16,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 83 conjunts are in the unsatisfiable core [2022-01-18 12:50:16,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:50:18,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:50:18,775 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 12:50:19,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 12:50:19,248 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:50:19,248 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 10 [2022-01-18 12:50:19,926 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:19,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:50:21,289 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:50:21,290 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 87 [2022-01-18 12:50:21,293 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 60 [2022-01-18 12:50:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:38,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364147204] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:50:38,845 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:50:38,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 38] total 105 [2022-01-18 12:50:38,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966692210] [2022-01-18 12:50:38,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:50:38,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-01-18 12:50:38,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:50:38,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-01-18 12:50:38,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=9676, Unknown=16, NotChecked=0, Total=10920 [2022-01-18 12:50:38,847 INFO L87 Difference]: Start difference. First operand 4903 states and 12523 transitions. Second operand has 105 states, 105 states have (on average 3.2285714285714286) internal successors, (339), 105 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:49,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:50:49,605 INFO L93 Difference]: Finished difference Result 8360 states and 21050 transitions. [2022-01-18 12:50:49,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-01-18 12:50:49,605 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 3.2285714285714286) internal successors, (339), 105 states have internal predecessors, (339), 0 states have call successors, (0), 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 133 [2022-01-18 12:50:49,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:50:49,618 INFO L225 Difference]: With dead ends: 8360 [2022-01-18 12:50:49,618 INFO L226 Difference]: Without dead ends: 7962 [2022-01-18 12:50:49,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 226 SyntacticMatches, 5 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12961 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=3720, Invalid=33679, Unknown=43, NotChecked=0, Total=37442 [2022-01-18 12:50:49,621 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 2410 mSDsluCounter, 11373 mSDsCounter, 0 mSdLazyCounter, 3933 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2410 SdHoareTripleChecker+Valid, 10807 SdHoareTripleChecker+Invalid, 7358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 3933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3285 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:50:49,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2410 Valid, 10807 Invalid, 7358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 3933 Invalid, 0 Unknown, 3285 Unchecked, 2.2s Time] [2022-01-18 12:50:49,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7962 states. [2022-01-18 12:50:49,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7962 to 5742. [2022-01-18 12:50:49,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5742 states, 5741 states have (on average 2.555478139696917) internal successors, (14671), 5741 states have internal predecessors, (14671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5742 states to 5742 states and 14671 transitions. [2022-01-18 12:50:49,709 INFO L78 Accepts]: Start accepts. Automaton has 5742 states and 14671 transitions. Word has length 133 [2022-01-18 12:50:49,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:50:49,710 INFO L470 AbstractCegarLoop]: Abstraction has 5742 states and 14671 transitions. [2022-01-18 12:50:49,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 3.2285714285714286) internal successors, (339), 105 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:49,710 INFO L276 IsEmpty]: Start isEmpty. Operand 5742 states and 14671 transitions. [2022-01-18 12:50:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-18 12:50:49,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:50:49,717 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-01-18 12:50:49,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-18 12:50:49,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-01-18 12:50:49,922 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:50:49,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:50:49,922 INFO L85 PathProgramCache]: Analyzing trace with hash -282526598, now seen corresponding path program 25 times [2022-01-18 12:50:49,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:50:49,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874043948] [2022-01-18 12:50:49,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:50:49,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:50:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2022-01-18 12:50:50,256 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-18 12:50:50,258 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 12:50:50,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-18 12:50:50,258 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 134 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 1ms.. [2022-01-18 12:50:50,260 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 12:50:50,260 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 12:50:50,262 INFO L732 BasicCegarLoop]: Path program histogram: [25, 12, 2, 1, 1, 1] [2022-01-18 12:50:50,265 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 12:50:50,266 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 12:50:50,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 12:50:50 BasicIcfg [2022-01-18 12:50:50,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 12:50:50,269 INFO L158 Benchmark]: Toolchain (without parser) took 800263.70ms. Allocated memory was 350.2MB in the beginning and 557.8MB in the end (delta: 207.6MB). Free memory was 298.0MB in the beginning and 233.6MB in the end (delta: 64.4MB). Peak memory consumption was 272.8MB. Max. memory is 16.0GB. [2022-01-18 12:50:50,269 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 350.2MB. Free memory is still 314.5MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 12:50:50,269 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.45ms. Allocated memory is still 350.2MB. Free memory was 297.8MB in the beginning and 322.4MB in the end (delta: -24.6MB). Peak memory consumption was 17.1MB. Max. memory is 16.0GB. [2022-01-18 12:50:50,270 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.92ms. Allocated memory is still 350.2MB. Free memory was 322.4MB in the beginning and 320.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 12:50:50,270 INFO L158 Benchmark]: Boogie Preprocessor took 27.11ms. Allocated memory is still 350.2MB. Free memory was 320.4MB in the beginning and 318.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 12:50:50,270 INFO L158 Benchmark]: RCFGBuilder took 435.38ms. Allocated memory is still 350.2MB. Free memory was 318.9MB in the beginning and 297.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2022-01-18 12:50:50,270 INFO L158 Benchmark]: TraceAbstraction took 799518.10ms. Allocated memory was 350.2MB in the beginning and 557.8MB in the end (delta: 207.6MB). Free memory was 297.9MB in the beginning and 233.6MB in the end (delta: 64.3MB). Peak memory consumption was 272.5MB. Max. memory is 16.0GB. [2022-01-18 12:50:50,275 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 350.2MB. Free memory is still 314.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 234.45ms. Allocated memory is still 350.2MB. Free memory was 297.8MB in the beginning and 322.4MB in the end (delta: -24.6MB). Peak memory consumption was 17.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.92ms. Allocated memory is still 350.2MB. Free memory was 322.4MB in the beginning and 320.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.11ms. Allocated memory is still 350.2MB. Free memory was 320.4MB in the beginning and 318.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 435.38ms. Allocated memory is still 350.2MB. Free memory was 318.9MB in the beginning and 297.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 799518.10ms. Allocated memory was 350.2MB in the beginning and 557.8MB in the end (delta: 207.6MB). Free memory was 297.9MB in the beginning and 233.6MB in the end (delta: 64.3MB). Peak memory consumption was 272.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 134 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 1ms.. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 134 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 1ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 134 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 1ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 159 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 799.4s, OverallIterations: 42, TraceHistogramMax: 2, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.2s, AutomataDifference: 443.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 62246 SdHoareTripleChecker+Valid, 83.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 62246 mSDsluCounter, 251660 SdHoareTripleChecker+Invalid, 76.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 62796 IncrementalHoareTripleChecker+Unchecked, 264104 mSDsCounter, 4503 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 86543 IncrementalHoareTripleChecker+Invalid, 153850 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4503 mSolverCounterUnsat, 8132 mSDtfsCounter, 86543 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10689 GetRequests, 5752 SyntacticMatches, 289 SemanticMatches, 4648 ConstructedPredicates, 13 IntricatePredicates, 2 DeprecatedPredicates, 271398 ImplicationChecksByTransitivity, 599.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5742occurred in iteration=41, InterpolantAutomatonStates: 2922, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 41 MinimizatonAttempts, 42777 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 344.1s InterpolantComputationTime, 8594 NumberOfCodeBlocks, 8573 NumberOfCodeBlocksAsserted, 97 NumberOfCheckSat, 11942 ConstructedInterpolants, 1769 QuantifiedInterpolants, 291357 SizeOfPredicates, 937 NumberOfNonLiveVariables, 7952 ConjunctsInSsa, 1662 ConjunctsInUnsatCore, 93 InterpolantComputations, 15 PerfectInterpolantSequences, 116/1134 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown