/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-queue-add-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 12:59:36,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 12:59:36,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 12:59:36,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 12:59:36,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 12:59:36,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 12:59:36,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 12:59:36,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 12:59:36,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 12:59:36,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 12:59:36,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 12:59:36,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 12:59:36,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 12:59:36,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 12:59:36,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 12:59:36,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 12:59:36,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 12:59:36,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 12:59:36,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 12:59:36,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 12:59:36,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 12:59:36,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 12:59:36,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 12:59:36,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 12:59:36,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 12:59:36,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 12:59:36,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 12:59:36,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 12:59:36,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 12:59:36,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 12:59:36,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 12:59:36,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 12:59:36,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 12:59:36,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 12:59:36,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 12:59:36,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 12:59:36,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 12:59:36,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 12:59:36,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 12:59:36,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 12:59:36,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 12:59:36,279 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 12:59:36,310 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 12:59:36,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 12:59:36,311 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 12:59:36,311 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 12:59:36,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 12:59:36,312 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 12:59:36,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 12:59:36,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 12:59:36,312 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 12:59:36,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 12:59:36,312 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 12:59:36,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 12:59:36,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 12:59:36,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 12:59:36,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 12:59:36,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 12:59:36,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 12:59:36,313 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 12:59:36,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 12:59:36,313 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 12:59:36,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 12:59:36,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 12:59:36,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 12:59:36,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 12:59:36,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 12:59:36,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:59:36,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 12:59:36,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 12:59:36,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 12:59:36,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 12:59:36,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 12:59:36,315 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 12:59:36,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 12:59:36,318 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 12:59:36,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 12:59:36,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 12:59:36,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 12:59:36,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 12:59:36,560 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 12:59:36,561 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 12:59:36,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2022-01-18 12:59:36,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/704e66dfd/bb004d3dec6f4fb7a41c660c5149329a/FLAG843a89d0b [2022-01-18 12:59:37,029 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 12:59:37,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2022-01-18 12:59:37,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/704e66dfd/bb004d3dec6f4fb7a41c660c5149329a/FLAG843a89d0b [2022-01-18 12:59:37,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/704e66dfd/bb004d3dec6f4fb7a41c660c5149329a [2022-01-18 12:59:37,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 12:59:37,057 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 12:59:37,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 12:59:37,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 12:59:37,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 12:59:37,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:59:37" (1/1) ... [2022-01-18 12:59:37,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ffce129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:37, skipping insertion in model container [2022-01-18 12:59:37,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:59:37" (1/1) ... [2022-01-18 12:59:37,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 12:59:37,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 12:59:37,255 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-queue-add-2.wvr.c[2696,2709] [2022-01-18 12:59:37,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:59:37,275 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 12:59:37,292 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-queue-add-2.wvr.c[2696,2709] [2022-01-18 12:59:37,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:59:37,305 INFO L208 MainTranslator]: Completed translation [2022-01-18 12:59:37,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:37 WrapperNode [2022-01-18 12:59:37,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 12:59:37,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 12:59:37,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 12:59:37,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 12:59:37,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:37" (1/1) ... [2022-01-18 12:59:37,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:37" (1/1) ... [2022-01-18 12:59:37,340 INFO L137 Inliner]: procedures = 24, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 154 [2022-01-18 12:59:37,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 12:59:37,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 12:59:37,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 12:59:37,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 12:59:37,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:37" (1/1) ... [2022-01-18 12:59:37,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:37" (1/1) ... [2022-01-18 12:59:37,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:37" (1/1) ... [2022-01-18 12:59:37,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:37" (1/1) ... [2022-01-18 12:59:37,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:37" (1/1) ... [2022-01-18 12:59:37,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:37" (1/1) ... [2022-01-18 12:59:37,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:37" (1/1) ... [2022-01-18 12:59:37,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 12:59:37,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 12:59:37,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 12:59:37,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 12:59:37,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:37" (1/1) ... [2022-01-18 12:59:37,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:59:37,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:59:37,416 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 12:59:37,417 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 12:59:37,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 12:59:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 12:59:37,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 12:59:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 12:59:37,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 12:59:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 12:59:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 12:59:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 12:59:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 12:59:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 12:59:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-18 12:59:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 12:59:37,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 12:59:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 12:59:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 12:59:37,444 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 12:59:37,531 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 12:59:37,532 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 12:59:37,748 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 12:59:37,841 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 12:59:37,842 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-18 12:59:37,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:59:37 BoogieIcfgContainer [2022-01-18 12:59:37,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 12:59:37,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 12:59:37,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 12:59:37,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 12:59:37,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 12:59:37" (1/3) ... [2022-01-18 12:59:37,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721cdd0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:59:37, skipping insertion in model container [2022-01-18 12:59:37,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:37" (2/3) ... [2022-01-18 12:59:37,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721cdd0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:59:37, skipping insertion in model container [2022-01-18 12:59:37,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:59:37" (3/3) ... [2022-01-18 12:59:37,855 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2022-01-18 12:59:37,859 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 12:59:37,859 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 12:59:37,859 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 12:59:37,859 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 12:59:37,896 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,896 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,897 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,897 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,897 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,897 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,899 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,899 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,899 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,899 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,899 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,899 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,900 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,900 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,900 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,900 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,900 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,901 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,901 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,901 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,901 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,901 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,902 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,902 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,902 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,902 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,902 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,902 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,902 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,903 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,903 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,907 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,907 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,909 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,909 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,909 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,911 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,911 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,911 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,911 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,911 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,911 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:37,915 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 12:59:37,947 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 12:59:37,952 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 12:59:37,952 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 12:59:37,962 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 132 places, 136 transitions, 288 flow [2022-01-18 12:59:38,022 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 490 states, 489 states have (on average 2.5848670756646217) internal successors, (1264), 489 states have internal predecessors, (1264), 0 states have call successors, (0), 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 12:59:38,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 490 states, 489 states have (on average 2.5848670756646217) internal successors, (1264), 489 states have internal predecessors, (1264), 0 states have call successors, (0), 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 12:59:38,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-18 12:59:38,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:38,044 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] [2022-01-18 12:59:38,045 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:59:38,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:38,049 INFO L85 PathProgramCache]: Analyzing trace with hash -90218077, now seen corresponding path program 1 times [2022-01-18 12:59:38,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:38,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655958098] [2022-01-18 12:59:38,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:38,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:38,251 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 12:59:38,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:38,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655958098] [2022-01-18 12:59:38,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655958098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:59:38,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:59:38,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 12:59:38,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104196949] [2022-01-18 12:59:38,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:59:38,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 12:59:38,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:38,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 12:59:38,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 12:59:38,288 INFO L87 Difference]: Start difference. First operand has 490 states, 489 states have (on average 2.5848670756646217) internal successors, (1264), 489 states have internal predecessors, (1264), 0 states have call successors, (0), 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 48.5) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:38,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:38,334 INFO L93 Difference]: Finished difference Result 490 states and 1135 transitions. [2022-01-18 12:59:38,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 12:59:38,338 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-01-18 12:59:38,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:38,350 INFO L225 Difference]: With dead ends: 490 [2022-01-18 12:59:38,351 INFO L226 Difference]: Without dead ends: 486 [2022-01-18 12:59:38,352 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 12:59:38,354 INFO L933 BasicCegarLoop]: 110 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, 110 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 12:59:38,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:59:38,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-01-18 12:59:38,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2022-01-18 12:59:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 2.331958762886598) internal successors, (1131), 485 states have internal predecessors, (1131), 0 states have call successors, (0), 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 12:59:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1131 transitions. [2022-01-18 12:59:38,415 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1131 transitions. Word has length 97 [2022-01-18 12:59:38,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:38,416 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 1131 transitions. [2022-01-18 12:59:38,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:38,416 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1131 transitions. [2022-01-18 12:59:38,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-18 12:59:38,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:38,422 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] [2022-01-18 12:59:38,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 12:59:38,422 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:59:38,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:38,423 INFO L85 PathProgramCache]: Analyzing trace with hash 751312825, now seen corresponding path program 1 times [2022-01-18 12:59:38,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:38,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959808561] [2022-01-18 12:59:38,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:38,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:38,619 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 12:59:38,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:38,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959808561] [2022-01-18 12:59:38,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959808561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:59:38,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:59:38,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:59:38,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332434708] [2022-01-18 12:59:38,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:59:38,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:59:38,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:38,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:59:38,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:59:38,623 INFO L87 Difference]: Start difference. First operand 486 states and 1131 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 12:59:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:38,709 INFO L93 Difference]: Finished difference Result 579 states and 1299 transitions. [2022-01-18 12:59:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 12:59:38,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-18 12:59:38,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:38,713 INFO L225 Difference]: With dead ends: 579 [2022-01-18 12:59:38,713 INFO L226 Difference]: Without dead ends: 492 [2022-01-18 12:59:38,713 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 12:59:38,714 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 226 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:38,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 333 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:59:38,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-01-18 12:59:38,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 487. [2022-01-18 12:59:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 2.3292181069958846) internal successors, (1132), 486 states have internal predecessors, (1132), 0 states have call successors, (0), 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 12:59:38,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1132 transitions. [2022-01-18 12:59:38,737 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1132 transitions. Word has length 100 [2022-01-18 12:59:38,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:38,737 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 1132 transitions. [2022-01-18 12:59:38,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 12:59:38,738 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1132 transitions. [2022-01-18 12:59:38,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-18 12:59:38,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:38,741 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] [2022-01-18 12:59:38,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 12:59:38,741 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:59:38,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:38,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2074297026, now seen corresponding path program 1 times [2022-01-18 12:59:38,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:38,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321323147] [2022-01-18 12:59:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:38,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:38,881 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 12:59:38,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:38,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321323147] [2022-01-18 12:59:38,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321323147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:59:38,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:59:38,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 12:59:38,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185512442] [2022-01-18 12:59:38,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:59:38,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 12:59:38,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:38,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 12:59:38,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 12:59:38,884 INFO L87 Difference]: Start difference. First operand 487 states and 1132 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:38,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:38,913 INFO L93 Difference]: Finished difference Result 521 states and 1214 transitions. [2022-01-18 12:59:38,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 12:59:38,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-01-18 12:59:38,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:38,919 INFO L225 Difference]: With dead ends: 521 [2022-01-18 12:59:38,920 INFO L226 Difference]: Without dead ends: 521 [2022-01-18 12:59:38,920 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 12:59:38,921 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 3 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 164 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 12:59:38,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 164 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:59:38,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-01-18 12:59:38,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2022-01-18 12:59:38,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 2.3346153846153848) internal successors, (1214), 520 states have internal predecessors, (1214), 0 states have call successors, (0), 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 12:59:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1214 transitions. [2022-01-18 12:59:38,938 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1214 transitions. Word has length 107 [2022-01-18 12:59:38,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:38,939 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 1214 transitions. [2022-01-18 12:59:38,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:38,939 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1214 transitions. [2022-01-18 12:59:38,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-18 12:59:38,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:38,941 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] [2022-01-18 12:59:38,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 12:59:38,942 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:59:38,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:38,942 INFO L85 PathProgramCache]: Analyzing trace with hash -940192228, now seen corresponding path program 2 times [2022-01-18 12:59:38,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:38,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473635116] [2022-01-18 12:59:38,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:38,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:39,166 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 12:59:39,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:39,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473635116] [2022-01-18 12:59:39,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473635116] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:59:39,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:59:39,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-18 12:59:39,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002249754] [2022-01-18 12:59:39,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:59:39,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 12:59:39,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:39,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 12:59:39,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-01-18 12:59:39,169 INFO L87 Difference]: Start difference. First operand 521 states and 1214 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:39,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:39,320 INFO L93 Difference]: Finished difference Result 856 states and 2027 transitions. [2022-01-18 12:59:39,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 12:59:39,321 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-01-18 12:59:39,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:39,327 INFO L225 Difference]: With dead ends: 856 [2022-01-18 12:59:39,327 INFO L226 Difference]: Without dead ends: 805 [2022-01-18 12:59:39,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:59:39,328 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 171 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:39,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 661 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:59:39,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-01-18 12:59:39,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 614. [2022-01-18 12:59:39,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 2.3148450244698204) internal successors, (1419), 613 states have internal predecessors, (1419), 0 states have call successors, (0), 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 12:59:39,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1419 transitions. [2022-01-18 12:59:39,352 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1419 transitions. Word has length 107 [2022-01-18 12:59:39,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:39,354 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 1419 transitions. [2022-01-18 12:59:39,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1419 transitions. [2022-01-18 12:59:39,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-18 12:59:39,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:39,357 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 12:59:39,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 12:59:39,357 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:59:39,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:39,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1596238760, now seen corresponding path program 1 times [2022-01-18 12:59:39,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:39,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506058838] [2022-01-18 12:59:39,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:39,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:59:39,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:39,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506058838] [2022-01-18 12:59:39,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506058838] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:39,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233344803] [2022-01-18 12:59:39,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:39,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:39,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:59:39,583 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 12:59:39,618 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 12:59:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:39,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:59:39,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:59:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:59:39,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 12:59:39,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233344803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:59:39,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 12:59:39,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 12 [2022-01-18 12:59:39,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872449020] [2022-01-18 12:59:39,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:59:39,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 12:59:39,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:39,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 12:59:39,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-01-18 12:59:39,985 INFO L87 Difference]: Start difference. First operand 614 states and 1419 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 12:59:40,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:40,021 INFO L93 Difference]: Finished difference Result 1238 states and 3016 transitions. [2022-01-18 12:59:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 12:59:40,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-01-18 12:59:40,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:40,027 INFO L225 Difference]: With dead ends: 1238 [2022-01-18 12:59:40,027 INFO L226 Difference]: Without dead ends: 1097 [2022-01-18 12:59:40,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-01-18 12:59:40,033 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 114 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:40,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 211 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:59:40,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-01-18 12:59:40,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 837. [2022-01-18 12:59:40,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 2.5047846889952154) internal successors, (2094), 836 states have internal predecessors, (2094), 0 states have call successors, (0), 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 12:59:40,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 2094 transitions. [2022-01-18 12:59:40,062 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 2094 transitions. Word has length 111 [2022-01-18 12:59:40,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:40,062 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 2094 transitions. [2022-01-18 12:59:40,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 12:59:40,063 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 2094 transitions. [2022-01-18 12:59:40,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-18 12:59:40,068 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:40,068 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] [2022-01-18 12:59:40,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 12:59:40,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:40,291 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:59:40,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:40,292 INFO L85 PathProgramCache]: Analyzing trace with hash 891713281, now seen corresponding path program 1 times [2022-01-18 12:59:40,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:40,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931710220] [2022-01-18 12:59:40,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:40,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:40,405 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 12:59:40,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:40,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931710220] [2022-01-18 12:59:40,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931710220] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:40,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956879180] [2022-01-18 12:59:40,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:40,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:40,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:59:40,408 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 12:59:40,440 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 12:59:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:40,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 12:59:40,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:59:40,883 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 12:59:40,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:59:41,278 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 12:59:41,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956879180] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:59:41,278 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:59:41,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:59:41,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952102740] [2022-01-18 12:59:41,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:59:41,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:59:41,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:41,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:59:41,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:59:41,280 INFO L87 Difference]: Start difference. First operand 837 states and 2094 transitions. Second operand has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 0 states have call successors, (0), 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 12:59:41,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:41,471 INFO L93 Difference]: Finished difference Result 1194 states and 2907 transitions. [2022-01-18 12:59:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 12:59:41,472 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-01-18 12:59:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:41,476 INFO L225 Difference]: With dead ends: 1194 [2022-01-18 12:59:41,476 INFO L226 Difference]: Without dead ends: 849 [2022-01-18 12:59:41,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 214 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 12:59:41,480 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 583 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:41,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 908 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:59:41,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-01-18 12:59:41,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 844. [2022-01-18 12:59:41,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 2.4922894424673783) internal successors, (2101), 843 states have internal predecessors, (2101), 0 states have call successors, (0), 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 12:59:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2101 transitions. [2022-01-18 12:59:41,500 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2101 transitions. Word has length 112 [2022-01-18 12:59:41,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:41,500 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2101 transitions. [2022-01-18 12:59:41,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 0 states have call successors, (0), 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 12:59:41,501 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2101 transitions. [2022-01-18 12:59:41,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-18 12:59:41,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:41,503 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] [2022-01-18 12:59:41,528 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 12:59:41,719 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,SelfDestructingSolverStorable5 [2022-01-18 12:59:41,719 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:59:41,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:41,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1610634378, now seen corresponding path program 2 times [2022-01-18 12:59:41,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:41,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164182362] [2022-01-18 12:59:41,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:41,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:42,557 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:59:42,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:42,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164182362] [2022-01-18 12:59:42,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164182362] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:42,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549034557] [2022-01-18 12:59:42,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:59:42,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:42,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:59:42,559 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 12:59:42,588 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 12:59:42,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:59:42,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:59:42,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-18 12:59:42,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:59:43,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:59:43,825 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 12:59:43,925 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 12:59:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:59:44,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:59:44,434 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:59:44,435 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 12:59:44,438 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 12:59:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:59:46,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549034557] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:59:46,070 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:59:46,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 21] total 59 [2022-01-18 12:59:46,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761371436] [2022-01-18 12:59:46,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:59:46,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-18 12:59:46,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:46,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-18 12:59:46,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3032, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 12:59:46,073 INFO L87 Difference]: Start difference. First operand 844 states and 2101 transitions. Second operand has 59 states, 59 states have (on average 4.932203389830509) internal successors, (291), 59 states have internal predecessors, (291), 0 states have call successors, (0), 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 12:59:48,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:48,814 INFO L93 Difference]: Finished difference Result 2577 states and 6519 transitions. [2022-01-18 12:59:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 12:59:48,815 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.932203389830509) internal successors, (291), 59 states have internal predecessors, (291), 0 states have call successors, (0), 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 119 [2022-01-18 12:59:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:48,824 INFO L225 Difference]: With dead ends: 2577 [2022-01-18 12:59:48,824 INFO L226 Difference]: Without dead ends: 2051 [2022-01-18 12:59:48,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1481, Invalid=7075, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 12:59:48,827 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 2899 mSDsluCounter, 3771 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2899 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:48,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2899 Valid, 3676 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1560 Invalid, 0 Unknown, 109 Unchecked, 0.9s Time] [2022-01-18 12:59:48,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2022-01-18 12:59:48,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1455. [2022-01-18 12:59:48,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1454 states have (on average 2.5536451169188448) internal successors, (3713), 1454 states have internal predecessors, (3713), 0 states have call successors, (0), 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 12:59:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 3713 transitions. [2022-01-18 12:59:48,865 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 3713 transitions. Word has length 119 [2022-01-18 12:59:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:48,866 INFO L470 AbstractCegarLoop]: Abstraction has 1455 states and 3713 transitions. [2022-01-18 12:59:48,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.932203389830509) internal successors, (291), 59 states have internal predecessors, (291), 0 states have call successors, (0), 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 12:59:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 3713 transitions. [2022-01-18 12:59:48,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-18 12:59:48,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:48,870 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] [2022-01-18 12:59:48,894 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 12:59:49,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:49,083 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:59:49,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1403854876, now seen corresponding path program 3 times [2022-01-18 12:59:49,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:49,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695933420] [2022-01-18 12:59:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:49,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:59:49,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:49,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695933420] [2022-01-18 12:59:49,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695933420] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:49,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912792127] [2022-01-18 12:59:49,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:59:49,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:49,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:59:49,950 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 12:59:49,959 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 12:59:50,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:59:50,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:59:50,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 12:59:50,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:59:50,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:59:50,536 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 12:59:50,588 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 12:59:50,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:59:50,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:59:50,688 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_150 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_150) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) 0))) is different from false [2022-01-18 12:59:50,733 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:59:50,734 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 12:59:50,737 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 12:59:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 1 not checked. [2022-01-18 12:59:51,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912792127] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:59:51,238 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:59:51,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12, 12] total 41 [2022-01-18 12:59:51,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450360179] [2022-01-18 12:59:51,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:59:51,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 12:59:51,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:51,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 12:59:51,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1460, Unknown=1, NotChecked=76, Total=1640 [2022-01-18 12:59:51,243 INFO L87 Difference]: Start difference. First operand 1455 states and 3713 transitions. Second operand has 41 states, 41 states have (on average 6.853658536585366) internal successors, (281), 41 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:54,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:54,404 INFO L93 Difference]: Finished difference Result 2095 states and 5291 transitions. [2022-01-18 12:59:54,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 12:59:54,404 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.853658536585366) internal successors, (281), 41 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-01-18 12:59:54,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:54,413 INFO L225 Difference]: With dead ends: 2095 [2022-01-18 12:59:54,413 INFO L226 Difference]: Without dead ends: 2095 [2022-01-18 12:59:54,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=784, Invalid=4475, Unknown=1, NotChecked=142, Total=5402 [2022-01-18 12:59:54,415 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 2068 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2068 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:54,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2068 Valid, 2584 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1080 Invalid, 0 Unknown, 187 Unchecked, 0.6s Time] [2022-01-18 12:59:54,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2022-01-18 12:59:54,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1394. [2022-01-18 12:59:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 2.5233309404163675) internal successors, (3515), 1393 states have internal predecessors, (3515), 0 states have call successors, (0), 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 12:59:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 3515 transitions. [2022-01-18 12:59:54,450 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 3515 transitions. Word has length 119 [2022-01-18 12:59:54,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:54,450 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 3515 transitions. [2022-01-18 12:59:54,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.853658536585366) internal successors, (281), 41 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:54,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 3515 transitions. [2022-01-18 12:59:54,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 12:59:54,453 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:54,453 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 12:59:54,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 12:59:54,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:54,666 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:59:54,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:54,667 INFO L85 PathProgramCache]: Analyzing trace with hash -871935768, now seen corresponding path program 1 times [2022-01-18 12:59:54,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:54,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227170276] [2022-01-18 12:59:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:54,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:55,710 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:59:55,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:55,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227170276] [2022-01-18 12:59:55,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227170276] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:55,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141625963] [2022-01-18 12:59:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:55,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:55,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:59:55,711 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 12:59:55,713 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 12:59:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:55,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 64 conjunts are in the unsatisfiable core [2022-01-18 12:59:55,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:59:55,820 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 12:59:56,116 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 12:59:56,116 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 12:59:57,372 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 12:59:57,573 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-18 12:59:57,574 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 12:59:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:59:57,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:59:58,706 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:59:58,706 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 111 treesize of output 95 [2022-01-18 12:59:58,711 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 67 treesize of output 49 [2022-01-18 13:00:00,815 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 10 treesize of output 8 [2022-01-18 13:00:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:00:00,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141625963] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:00:00,844 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:00:00,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 84 [2022-01-18 13:00:00,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383155233] [2022-01-18 13:00:00,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:00:00,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-18 13:00:00,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:00:00,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-18 13:00:00,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=6428, Unknown=4, NotChecked=0, Total=6972 [2022-01-18 13:00:00,848 INFO L87 Difference]: Start difference. First operand 1394 states and 3515 transitions. Second operand has 84 states, 84 states have (on average 3.607142857142857) internal successors, (303), 84 states have internal predecessors, (303), 0 states have call successors, (0), 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 13:00:05,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:00:05,371 INFO L93 Difference]: Finished difference Result 2314 states and 5758 transitions. [2022-01-18 13:00:05,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 13:00:05,371 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.607142857142857) internal successors, (303), 84 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-18 13:00:05,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:00:05,380 INFO L225 Difference]: With dead ends: 2314 [2022-01-18 13:00:05,380 INFO L226 Difference]: Without dead ends: 1985 [2022-01-18 13:00:05,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 196 SyntacticMatches, 15 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5359 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1756, Invalid=15269, Unknown=5, NotChecked=0, Total=17030 [2022-01-18 13:00:05,384 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 2281 mSDsluCounter, 6048 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 5650 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1160 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:00:05,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2281 Valid, 5650 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1469 Invalid, 0 Unknown, 1160 Unchecked, 0.7s Time] [2022-01-18 13:00:05,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-01-18 13:00:05,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1489. [2022-01-18 13:00:05,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1488 states have (on average 2.5268817204301075) internal successors, (3760), 1488 states have internal predecessors, (3760), 0 states have call successors, (0), 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 13:00:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 3760 transitions. [2022-01-18 13:00:05,421 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 3760 transitions. Word has length 123 [2022-01-18 13:00:05,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:00:05,422 INFO L470 AbstractCegarLoop]: Abstraction has 1489 states and 3760 transitions. [2022-01-18 13:00:05,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.607142857142857) internal successors, (303), 84 states have internal predecessors, (303), 0 states have call successors, (0), 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 13:00:05,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 3760 transitions. [2022-01-18 13:00:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 13:00:05,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:00:05,425 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 13:00:05,450 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 13:00:05,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:00:05,639 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:00:05,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:00:05,640 INFO L85 PathProgramCache]: Analyzing trace with hash 365129222, now seen corresponding path program 2 times [2022-01-18 13:00:05,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:00:05,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661837816] [2022-01-18 13:00:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:00:05,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:00:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:00:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:00:06,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:00:06,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661837816] [2022-01-18 13:00:06,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661837816] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:00:06,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293821459] [2022-01-18 13:00:06,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:00:06,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:00:06,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:00:06,665 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 13:00:06,666 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 13:00:06,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:00:06,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:00:06,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 13:00:06,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:00:08,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:00:08,062 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 13:00:08,181 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 25 treesize of output 7 [2022-01-18 13:00:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:00:08,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:00:09,209 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:00:09,209 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 82 treesize of output 74 [2022-01-18 13:00:09,213 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 53 treesize of output 47 [2022-01-18 13:00:09,216 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 47 treesize of output 41 [2022-01-18 13:00:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:00:11,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293821459] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:00:11,293 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:00:11,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 31, 31] total 84 [2022-01-18 13:00:11,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7204284] [2022-01-18 13:00:11,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:00:11,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-18 13:00:11,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:00:11,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-18 13:00:11,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=6532, Unknown=20, NotChecked=0, Total=6972 [2022-01-18 13:00:11,296 INFO L87 Difference]: Start difference. First operand 1489 states and 3760 transitions. Second operand has 84 states, 84 states have (on average 3.75) internal successors, (315), 84 states have internal predecessors, (315), 0 states have call successors, (0), 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 13:00:15,269 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (+ c_~q_front~0 1))) (let ((.cse0 (< .cse3 0)) (.cse1 (<= c_~n~0 .cse3)) (.cse2 (and (forall ((v_ArrVal_209 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_209) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0)) (forall ((v_ArrVal_209 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_209) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))))))) (and (= (select |c_#valid| |c_ULTIMATE.start_main_~#t2~0#1.base|) 1) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t2~0#1.base|) (or .cse0 .cse1 (< (+ |c_thread1Thread1of1ForFork1_#t~post1#1| 1) c_~N~0) .cse2) (or .cse0 .cse1 (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0) .cse2) (= c_~s~0 0)))) is different from false [2022-01-18 13:00:17,196 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse13 (* c_~q_front~0 4))) (let ((.cse17 (+ c_~q_front~0 1)) (.cse11 (<= 0 c_~s~0)) (.cse16 (forall ((|ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| Int)) (= (+ (* c_~q_front~0 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ (* 4 c_~q_back~0) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (.cse14 (<= c_~s~0 0)) (.cse10 (+ .cse13 c_~q~0.offset)) (.cse12 (* 4 c_~q_back~0))) (let ((.cse4 (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| c_~q~0.base))) (.cse6 (= .cse10 (+ c_~q~0.offset .cse12))) (.cse8 (and .cse11 .cse16 .cse14 (<= |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t2~0#1.base|))) (.cse15 (+ c_~N~0 |c_thread2Thread1of1ForFork0_~j~0#1|)) (.cse5 (+ c_~s~0 1)) (.cse1 (not (<= 0 c_~q_back~0))) (.cse2 (not (< c_~q_back~0 c_~n~0))) (.cse7 (< 2 |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (.cse0 (< .cse17 0)) (.cse3 (<= c_~n~0 .cse17))) (and (or .cse0 .cse1 .cse2 .cse3 (and .cse4 (<= c_~N~0 .cse5) (<= .cse5 c_~N~0) .cse6) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0)) (or .cse0 .cse1 .cse2 .cse3 .cse7 .cse8) (or .cse0 .cse1 .cse2 .cse3 (and (<= c_~s~0 |c_thread1Thread1of1ForFork1_~i~0#1|) .cse4 .cse6 (<= |c_thread1Thread1of1ForFork1_~i~0#1| c_~s~0))) (or .cse0 .cse3 (let ((.cse9 (+ c_~s~0 (select (select |c_#memory_int| c_~q~0.base) .cse10)))) (and (<= c_~N~0 .cse9) (<= .cse9 c_~N~0)))) (or .cse0 .cse1 .cse2 .cse3 (and .cse11 (= (+ .cse12 |c_ULTIMATE.start_main_#t~ret11#1.offset|) (+ .cse13 |c_ULTIMATE.start_main_#t~ret11#1.offset|)) .cse14 (not (<= |c_ULTIMATE.start_main_~#t2~0#1.base| |c_ULTIMATE.start_main_#t~ret11#1.base|)))) (or .cse0 .cse1 .cse2 .cse3 (< 2 |c_ULTIMATE.start_create_fresh_int_array_#in~size#1|) .cse8) (or .cse0 .cse1 .cse2 .cse3 (and .cse11 (< |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|) .cse14 (= (+ .cse13 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) (+ .cse12 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))) (= c_~s~0 1) (<= .cse5 .cse15) (<= c_~N~0 1) (or .cse0 .cse1 (and .cse11 .cse4 .cse14 .cse6) .cse2 .cse3) (or (<= 1 c_~q_front~0) .cse0 .cse1 (<= 2 c_~q_back~0) .cse8) (or .cse0 .cse1 (and .cse11 .cse16 (< |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|) .cse14) .cse2 .cse3) (< 0 c_~N~0) (= |c_thread2Thread1of1ForFork0_~j~0#1| 1) (= c_~q~0.offset 0) (<= .cse15 .cse5) (or .cse0 .cse1 .cse2 .cse3 (and .cse11 .cse16 .cse14 (< |c_ULTIMATE.start_create_fresh_int_array_#t~malloc18#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)) .cse7) (or .cse0 .cse3 (and (forall ((v_ArrVal_209 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_209) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0)) (forall ((v_ArrVal_209 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_209) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))))))))) is different from false [2022-01-18 13:00:18,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:00:18,680 INFO L93 Difference]: Finished difference Result 2790 states and 6789 transitions. [2022-01-18 13:00:18,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 13:00:18,680 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.75) internal successors, (315), 84 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-18 13:00:18,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:00:18,689 INFO L225 Difference]: With dead ends: 2790 [2022-01-18 13:00:18,689 INFO L226 Difference]: Without dead ends: 2396 [2022-01-18 13:00:18,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 207 SyntacticMatches, 13 SemanticMatches, 148 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7280 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=2164, Invalid=19564, Unknown=36, NotChecked=586, Total=22350 [2022-01-18 13:00:18,693 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 3105 mSDsluCounter, 9185 mSDsCounter, 0 mSdLazyCounter, 3585 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3105 SdHoareTripleChecker+Valid, 8389 SdHoareTripleChecker+Invalid, 6334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 3585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2533 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:00:18,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3105 Valid, 8389 Invalid, 6334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 3585 Invalid, 0 Unknown, 2533 Unchecked, 1.6s Time] [2022-01-18 13:00:18,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2022-01-18 13:00:18,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 1748. [2022-01-18 13:00:18,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1747 states have (on average 2.483686319404694) internal successors, (4339), 1747 states have internal predecessors, (4339), 0 states have call successors, (0), 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 13:00:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 4339 transitions. [2022-01-18 13:00:18,732 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 4339 transitions. Word has length 123 [2022-01-18 13:00:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:00:18,732 INFO L470 AbstractCegarLoop]: Abstraction has 1748 states and 4339 transitions. [2022-01-18 13:00:18,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.75) internal successors, (315), 84 states have internal predecessors, (315), 0 states have call successors, (0), 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 13:00:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 4339 transitions. [2022-01-18 13:00:18,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 13:00:18,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:00:18,736 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 13:00:18,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 13:00:18,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:00:18,955 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:00:18,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:00:18,956 INFO L85 PathProgramCache]: Analyzing trace with hash -854331734, now seen corresponding path program 3 times [2022-01-18 13:00:18,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:00:18,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848387054] [2022-01-18 13:00:18,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:00:18,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:00:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:00:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:00:20,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:00:20,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848387054] [2022-01-18 13:00:20,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848387054] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:00:20,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638451290] [2022-01-18 13:00:20,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:00:20,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:00:20,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:00:20,282 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 13:00:20,285 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 13:00:20,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 13:00:20,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:00:20,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 45 conjunts are in the unsatisfiable core [2022-01-18 13:00:20,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:00:20,383 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:00:20,583 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:00:20,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:00:21,175 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 13:00:21,253 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 13:00:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 13:00:21,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:00:22,325 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:00:22,325 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 111 treesize of output 95 [2022-01-18 13:00:22,330 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 67 treesize of output 49 [2022-01-18 13:00:23,318 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 10 treesize of output 8 [2022-01-18 13:00:23,339 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 13:00:23,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638451290] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:00:23,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:00:23,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 23, 23] total 63 [2022-01-18 13:00:23,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941726900] [2022-01-18 13:00:23,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:00:23,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-18 13:00:23,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:00:23,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-18 13:00:23,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=3681, Unknown=6, NotChecked=0, Total=3906 [2022-01-18 13:00:23,341 INFO L87 Difference]: Start difference. First operand 1748 states and 4339 transitions. Second operand has 63 states, 63 states have (on average 4.238095238095238) internal successors, (267), 63 states have internal predecessors, (267), 0 states have call successors, (0), 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 13:00:32,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:00:32,177 INFO L93 Difference]: Finished difference Result 3531 states and 8806 transitions. [2022-01-18 13:00:32,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 13:00:32,177 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.238095238095238) internal successors, (267), 63 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-18 13:00:32,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:00:32,187 INFO L225 Difference]: With dead ends: 3531 [2022-01-18 13:00:32,187 INFO L226 Difference]: Without dead ends: 3297 [2022-01-18 13:00:32,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 232 SyntacticMatches, 13 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6380 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1732, Invalid=19720, Unknown=10, NotChecked=0, Total=21462 [2022-01-18 13:00:32,189 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 2927 mSDsluCounter, 7180 mSDsCounter, 0 mSdLazyCounter, 3926 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2927 SdHoareTripleChecker+Valid, 6736 SdHoareTripleChecker+Invalid, 4950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 3926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 676 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:00:32,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2927 Valid, 6736 Invalid, 4950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 3926 Invalid, 0 Unknown, 676 Unchecked, 1.8s Time] [2022-01-18 13:00:32,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2022-01-18 13:00:32,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 1788. [2022-01-18 13:00:32,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1787 states have (on average 2.4829322887520986) internal successors, (4437), 1787 states have internal predecessors, (4437), 0 states have call successors, (0), 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 13:00:32,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 4437 transitions. [2022-01-18 13:00:32,230 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 4437 transitions. Word has length 123 [2022-01-18 13:00:32,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:00:32,231 INFO L470 AbstractCegarLoop]: Abstraction has 1788 states and 4437 transitions. [2022-01-18 13:00:32,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.238095238095238) internal successors, (267), 63 states have internal predecessors, (267), 0 states have call successors, (0), 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 13:00:32,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 4437 transitions. [2022-01-18 13:00:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 13:00:32,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:00:32,235 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 13:00:32,259 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 13:00:32,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:00:32,451 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:00:32,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:00:32,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1340828470, now seen corresponding path program 4 times [2022-01-18 13:00:32,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:00:32,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722469295] [2022-01-18 13:00:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:00:32,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:00:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:00:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:00:33,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:00:33,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722469295] [2022-01-18 13:00:33,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722469295] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:00:33,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775754120] [2022-01-18 13:00:33,517 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:00:33,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:00:33,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:00:33,518 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 13:00:33,519 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 13:00:33,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:00:33,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:00:33,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 63 conjunts are in the unsatisfiable core [2022-01-18 13:00:33,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:00:35,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:00:35,244 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 13:00:35,399 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-18 13:00:35,400 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 13:00:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:00:35,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:00:36,551 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:00:36,552 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 111 treesize of output 95 [2022-01-18 13:00:36,556 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 67 treesize of output 49 [2022-01-18 13:00:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:00:38,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775754120] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:00:38,601 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:00:38,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 36, 35] total 91 [2022-01-18 13:00:38,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4313955] [2022-01-18 13:00:38,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:00:38,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-18 13:00:38,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:00:38,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-18 13:00:38,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=7550, Unknown=4, NotChecked=0, Total=8190 [2022-01-18 13:00:38,608 INFO L87 Difference]: Start difference. First operand 1788 states and 4437 transitions. Second operand has 91 states, 91 states have (on average 3.32967032967033) internal successors, (303), 91 states have internal predecessors, (303), 0 states have call successors, (0), 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 13:00:48,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:00:48,899 INFO L93 Difference]: Finished difference Result 3683 states and 9251 transitions. [2022-01-18 13:00:48,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-18 13:00:48,899 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.32967032967033) internal successors, (303), 91 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-18 13:00:48,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:00:48,912 INFO L225 Difference]: With dead ends: 3683 [2022-01-18 13:00:48,912 INFO L226 Difference]: Without dead ends: 3399 [2022-01-18 13:00:48,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 187 SyntacticMatches, 10 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10884 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=3397, Invalid=29171, Unknown=12, NotChecked=0, Total=32580 [2022-01-18 13:00:48,914 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 4061 mSDsluCounter, 9734 mSDsCounter, 0 mSdLazyCounter, 5307 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4061 SdHoareTripleChecker+Valid, 9063 SdHoareTripleChecker+Invalid, 6874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 5307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1113 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:00:48,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4061 Valid, 9063 Invalid, 6874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 5307 Invalid, 0 Unknown, 1113 Unchecked, 2.3s Time] [2022-01-18 13:00:48,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2022-01-18 13:00:48,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 1814. [2022-01-18 13:00:48,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1813 states have (on average 2.490899062327634) internal successors, (4516), 1813 states have internal predecessors, (4516), 0 states have call successors, (0), 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 13:00:48,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 4516 transitions. [2022-01-18 13:00:48,962 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 4516 transitions. Word has length 123 [2022-01-18 13:00:48,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:00:48,962 INFO L470 AbstractCegarLoop]: Abstraction has 1814 states and 4516 transitions. [2022-01-18 13:00:48,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.32967032967033) internal successors, (303), 91 states have internal predecessors, (303), 0 states have call successors, (0), 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 13:00:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 4516 transitions. [2022-01-18 13:00:48,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 13:00:48,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:00:48,967 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 13:00:48,991 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 13:00:49,171 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,SelfDestructingSolverStorable11 [2022-01-18 13:00:49,171 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:00:49,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:00:49,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1076103478, now seen corresponding path program 5 times [2022-01-18 13:00:49,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:00:49,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400174729] [2022-01-18 13:00:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:00:49,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:00:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:00:50,612 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:00:50,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:00:50,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400174729] [2022-01-18 13:00:50,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400174729] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:00:50,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667479144] [2022-01-18 13:00:50,613 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:00:50,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:00:50,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:00:50,614 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 13:00:50,614 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 13:00:50,687 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:00:50,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:00:50,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-18 13:00:50,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:00:50,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:00:50,903 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:00:50,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:00:51,513 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 13:00:51,646 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 13:00:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 13:00:51,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:00:52,347 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:00:52,347 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 82 treesize of output 74 [2022-01-18 13:00:52,350 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 53 treesize of output 47 [2022-01-18 13:00:52,352 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 47 treesize of output 41 [2022-01-18 13:00:53,179 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 10 treesize of output 8 [2022-01-18 13:00:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 13:00:53,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667479144] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:00:53,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:00:53,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 22, 22] total 66 [2022-01-18 13:00:53,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406607797] [2022-01-18 13:00:53,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:00:53,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-18 13:00:53,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:00:53,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-18 13:00:53,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=4067, Unknown=2, NotChecked=0, Total=4290 [2022-01-18 13:00:53,201 INFO L87 Difference]: Start difference. First operand 1814 states and 4516 transitions. Second operand has 66 states, 66 states have (on average 4.196969696969697) internal successors, (277), 66 states have internal predecessors, (277), 0 states have call successors, (0), 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 13:01:00,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:01:00,878 INFO L93 Difference]: Finished difference Result 3752 states and 9231 transitions. [2022-01-18 13:01:00,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 13:01:00,893 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.196969696969697) internal successors, (277), 66 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-18 13:01:00,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:01:00,900 INFO L225 Difference]: With dead ends: 3752 [2022-01-18 13:01:00,901 INFO L226 Difference]: Without dead ends: 3329 [2022-01-18 13:01:00,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 220 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5198 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1694, Invalid=18896, Unknown=2, NotChecked=0, Total=20592 [2022-01-18 13:01:00,902 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 2420 mSDsluCounter, 9102 mSDsCounter, 0 mSdLazyCounter, 4780 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 8447 SdHoareTripleChecker+Invalid, 5807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 4780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 840 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:01:00,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2420 Valid, 8447 Invalid, 5807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 4780 Invalid, 0 Unknown, 840 Unchecked, 2.0s Time] [2022-01-18 13:01:00,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3329 states. [2022-01-18 13:01:00,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3329 to 1751. [2022-01-18 13:01:00,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1750 states have (on average 2.513714285714286) internal successors, (4399), 1750 states have internal predecessors, (4399), 0 states have call successors, (0), 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 13:01:00,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 4399 transitions. [2022-01-18 13:01:00,960 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 4399 transitions. Word has length 123 [2022-01-18 13:01:00,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:01:00,961 INFO L470 AbstractCegarLoop]: Abstraction has 1751 states and 4399 transitions. [2022-01-18 13:01:00,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.196969696969697) internal successors, (277), 66 states have internal predecessors, (277), 0 states have call successors, (0), 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 13:01:00,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 4399 transitions. [2022-01-18 13:01:00,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 13:01:00,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:01:00,965 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 13:01:00,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 13:01:01,178 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,SelfDestructingSolverStorable12 [2022-01-18 13:01:01,178 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:01:01,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:01:01,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1294464682, now seen corresponding path program 6 times [2022-01-18 13:01:01,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:01:01,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050064597] [2022-01-18 13:01:01,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:01:01,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:01:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:01:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:01:02,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:01:02,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050064597] [2022-01-18 13:01:02,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050064597] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:01:02,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124998125] [2022-01-18 13:01:02,925 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:01:02,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:01:02,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:01:02,928 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 13:01:02,962 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 13:01:03,026 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:01:03,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:01:03,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-18 13:01:03,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:01:03,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:01:03,405 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:01:03,405 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:01:03,579 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:01:03,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:01:04,171 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:01:04,535 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 13:01:04,668 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 13:01:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:01:05,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:01:08,131 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-18 13:01:08,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 112 treesize of output 88 [2022-01-18 13:01:08,170 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:01:08,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 305 treesize of output 353 [2022-01-18 13:01:08,184 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:01:08,184 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 353 treesize of output 345 [2022-01-18 13:01:08,197 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 197 treesize of output 185 [2022-01-18 13:01:08,204 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 185 treesize of output 161 [2022-01-18 13:01:11,198 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 10 treesize of output 8 [2022-01-18 13:01:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:01:11,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124998125] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:01:11,228 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:01:11,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 33, 34] total 94 [2022-01-18 13:01:11,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414411251] [2022-01-18 13:01:11,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:01:11,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-18 13:01:11,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:01:11,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-18 13:01:11,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=8091, Unknown=80, NotChecked=0, Total=8742 [2022-01-18 13:01:11,230 INFO L87 Difference]: Start difference. First operand 1751 states and 4399 transitions. Second operand has 94 states, 94 states have (on average 3.3404255319148937) internal successors, (314), 94 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 13:01:29,081 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (* 4 c_~q_back~0))) (let ((.cse3 (+ c_~q~0.offset .cse6))) (let ((.cse2 (* c_~q_front~0 4)) (.cse0 (not (= (select (select |c_#memory_int| c_~q~0.base) .cse3) 1))) (.cse4 (< c_~q_back~0 0)) (.cse7 (<= c_~n~0 (+ c_~q_back~0 1)))) (and (or (and (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| c_~q~0.base)) (or .cse0 (let ((.cse1 (+ .cse2 c_~q~0.offset))) (and (or (<= .cse1 0) (<= (+ c_~q_front~0 c_~n~0) (+ 2 c_~q_back~0))) (or (not (= .cse1 0)) (and (= c_~s~0 0) (or (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| c_~q~0.base)) (not (<= 0 c_~N~0))))) (< 0 (+ .cse2 c_~q~0.offset 1)))))) (not (= .cse3 0))) (or (<= .cse3 0) (<= c_~n~0 2)) (= c_~q~0.offset 0) (or .cse4 (let ((.cse5 (< 2 |c_ULTIMATE.start_create_fresh_int_array_~size#1|))) (and (or (<= 0 c_~s~0) .cse5) (or .cse5 (= .cse2 .cse6)) (or .cse5 (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (<= c_~s~0 0) .cse5))) .cse7) (or (and (forall ((v_ArrVal_333 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_333) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) 1)) (forall ((v_ArrVal_333 (Array Int Int))) (<= 1 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_333) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))))) .cse0 .cse4 .cse7))))) is different from false [2022-01-18 13:01:37,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:01:37,483 INFO L93 Difference]: Finished difference Result 3204 states and 7799 transitions. [2022-01-18 13:01:37,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-18 13:01:37,483 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 3.3404255319148937) internal successors, (314), 94 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 123 [2022-01-18 13:01:37,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:01:37,489 INFO L225 Difference]: With dead ends: 3204 [2022-01-18 13:01:37,489 INFO L226 Difference]: Without dead ends: 3070 [2022-01-18 13:01:37,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 209 SyntacticMatches, 40 SemanticMatches, 190 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12832 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=3646, Invalid=32445, Unknown=203, NotChecked=378, Total=36672 [2022-01-18 13:01:37,491 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 3686 mSDsluCounter, 8990 mSDsCounter, 0 mSdLazyCounter, 3637 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3686 SdHoareTripleChecker+Valid, 8263 SdHoareTripleChecker+Invalid, 7404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 3637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3425 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:01:37,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3686 Valid, 8263 Invalid, 7404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 3637 Invalid, 0 Unknown, 3425 Unchecked, 1.7s Time] [2022-01-18 13:01:37,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2022-01-18 13:01:37,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 1994. [2022-01-18 13:01:37,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1993 states have (on average 2.483692925238334) internal successors, (4950), 1993 states have internal predecessors, (4950), 0 states have call successors, (0), 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 13:01:37,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 4950 transitions. [2022-01-18 13:01:37,528 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 4950 transitions. Word has length 123 [2022-01-18 13:01:37,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:01:37,528 INFO L470 AbstractCegarLoop]: Abstraction has 1994 states and 4950 transitions. [2022-01-18 13:01:37,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.3404255319148937) internal successors, (314), 94 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 13:01:37,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 4950 transitions. [2022-01-18 13:01:37,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 13:01:37,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:01:37,532 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 13:01:37,556 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 13:01:37,747 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,SelfDestructingSolverStorable13 [2022-01-18 13:01:37,748 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:01:37,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:01:37,748 INFO L85 PathProgramCache]: Analyzing trace with hash 581984166, now seen corresponding path program 7 times [2022-01-18 13:01:37,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:01:37,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289825099] [2022-01-18 13:01:37,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:01:37,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:01:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:01:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:01:38,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:01:38,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289825099] [2022-01-18 13:01:38,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289825099] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:01:38,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927720488] [2022-01-18 13:01:38,668 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:01:38,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:01:38,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:01:38,672 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 13:01:38,676 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 13:01:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:01:38,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 64 conjunts are in the unsatisfiable core [2022-01-18 13:01:38,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:01:38,790 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:01:39,045 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:01:39,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:01:39,952 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 13:01:40,084 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 25 treesize of output 7 [2022-01-18 13:01:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:01:40,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:01:41,237 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:01:41,238 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 111 treesize of output 95 [2022-01-18 13:01:41,242 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 67 treesize of output 49 [2022-01-18 13:01:43,155 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 10 treesize of output 8 [2022-01-18 13:01:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:01:43,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927720488] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:01:43,179 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:01:43,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 86 [2022-01-18 13:01:43,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734926134] [2022-01-18 13:01:43,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:01:43,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 13:01:43,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:01:43,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 13:01:43,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=6756, Unknown=4, NotChecked=0, Total=7310 [2022-01-18 13:01:43,180 INFO L87 Difference]: Start difference. First operand 1994 states and 4950 transitions. Second operand has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 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 13:01:50,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:01:50,132 INFO L93 Difference]: Finished difference Result 3196 states and 7863 transitions. [2022-01-18 13:01:50,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 13:01:50,132 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-18 13:01:50,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:01:50,138 INFO L225 Difference]: With dead ends: 3196 [2022-01-18 13:01:50,138 INFO L226 Difference]: Without dead ends: 2745 [2022-01-18 13:01:50,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 196 SyntacticMatches, 13 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7183 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2441, Invalid=20196, Unknown=13, NotChecked=0, Total=22650 [2022-01-18 13:01:50,142 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 2828 mSDsluCounter, 7269 mSDsCounter, 0 mSdLazyCounter, 3359 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2828 SdHoareTripleChecker+Valid, 6829 SdHoareTripleChecker+Invalid, 4651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 3359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1049 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:01:50,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2828 Valid, 6829 Invalid, 4651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 3359 Invalid, 0 Unknown, 1049 Unchecked, 1.4s Time] [2022-01-18 13:01:50,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2022-01-18 13:01:50,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 1973. [2022-01-18 13:01:50,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1972 states have (on average 2.483265720081136) internal successors, (4897), 1972 states have internal predecessors, (4897), 0 states have call successors, (0), 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 13:01:50,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 4897 transitions. [2022-01-18 13:01:50,179 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 4897 transitions. Word has length 123 [2022-01-18 13:01:50,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:01:50,179 INFO L470 AbstractCegarLoop]: Abstraction has 1973 states and 4897 transitions. [2022-01-18 13:01:50,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 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 13:01:50,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 4897 transitions. [2022-01-18 13:01:50,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 13:01:50,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:01:50,183 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 13:01:50,207 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 13:01:50,387 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,SelfDestructingSolverStorable14 [2022-01-18 13:01:50,387 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:01:50,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:01:50,388 INFO L85 PathProgramCache]: Analyzing trace with hash 807967946, now seen corresponding path program 8 times [2022-01-18 13:01:50,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:01:50,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807094389] [2022-01-18 13:01:50,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:01:50,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:01:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:01:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:01:51,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:01:51,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807094389] [2022-01-18 13:01:51,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807094389] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:01:51,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159322917] [2022-01-18 13:01:51,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:01:51,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:01:51,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:01:51,599 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 13:01:51,599 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 13:01:51,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:01:51,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:01:51,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 67 conjunts are in the unsatisfiable core [2022-01-18 13:01:51,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:01:51,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:01:52,056 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:01:52,057 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:01:52,225 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:01:52,380 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:01:52,782 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:01:53,157 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 13:01:53,277 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 13:01:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:01:53,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:01:57,372 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-18 13:01:57,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 148 treesize of output 105 [2022-01-18 13:01:57,387 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:01:57,387 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 274 treesize of output 282 [2022-01-18 13:01:57,392 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 197 treesize of output 161 [2022-01-18 13:01:57,402 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:01:57,402 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 156 [2022-01-18 13:01:59,543 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 10 treesize of output 8 [2022-01-18 13:01:59,566 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:01:59,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159322917] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:01:59,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:01:59,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 34, 35] total 93 [2022-01-18 13:01:59,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424584696] [2022-01-18 13:01:59,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:01:59,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-01-18 13:01:59,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:01:59,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-01-18 13:01:59,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=620, Invalid=7864, Unknown=72, NotChecked=0, Total=8556 [2022-01-18 13:01:59,567 INFO L87 Difference]: Start difference. First operand 1973 states and 4897 transitions. Second operand has 93 states, 93 states have (on average 3.3978494623655915) internal successors, (316), 93 states have internal predecessors, (316), 0 states have call successors, (0), 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 13:02:08,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:02:08,581 INFO L93 Difference]: Finished difference Result 2904 states and 7077 transitions. [2022-01-18 13:02:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 13:02:08,581 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 3.3978494623655915) internal successors, (316), 93 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-18 13:02:08,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:02:08,587 INFO L225 Difference]: With dead ends: 2904 [2022-01-18 13:02:08,587 INFO L226 Difference]: Without dead ends: 2488 [2022-01-18 13:02:08,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 197 SyntacticMatches, 27 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8327 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=2680, Invalid=22676, Unknown=84, NotChecked=0, Total=25440 [2022-01-18 13:02:08,589 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 3089 mSDsluCounter, 7578 mSDsCounter, 0 mSdLazyCounter, 2842 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3089 SdHoareTripleChecker+Valid, 7051 SdHoareTripleChecker+Invalid, 5071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2054 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:02:08,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3089 Valid, 7051 Invalid, 5071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2842 Invalid, 0 Unknown, 2054 Unchecked, 1.2s Time] [2022-01-18 13:02:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2022-01-18 13:02:08,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2019. [2022-01-18 13:02:08,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 2018 states have (on average 2.480673934588702) internal successors, (5006), 2018 states have internal predecessors, (5006), 0 states have call successors, (0), 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 13:02:08,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 5006 transitions. [2022-01-18 13:02:08,623 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 5006 transitions. Word has length 123 [2022-01-18 13:02:08,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:02:08,623 INFO L470 AbstractCegarLoop]: Abstraction has 2019 states and 5006 transitions. [2022-01-18 13:02:08,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 3.3978494623655915) internal successors, (316), 93 states have internal predecessors, (316), 0 states have call successors, (0), 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 13:02:08,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 5006 transitions. [2022-01-18 13:02:08,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 13:02:08,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:02:08,629 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 13:02:08,654 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 13:02:08,829 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,SelfDestructingSolverStorable15 [2022-01-18 13:02:08,830 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:02:08,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:02:08,830 INFO L85 PathProgramCache]: Analyzing trace with hash 349498376, now seen corresponding path program 9 times [2022-01-18 13:02:08,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:02:08,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697841676] [2022-01-18 13:02:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:02:08,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:02:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:02:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:02:09,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:02:09,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697841676] [2022-01-18 13:02:09,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697841676] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:02:09,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80021199] [2022-01-18 13:02:09,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:02:09,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:02:09,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:02:09,875 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 13:02:09,876 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 13:02:09,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 13:02:09,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:02:09,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 13:02:09,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:02:09,988 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:02:10,034 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 13:02:10,035 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-18 13:02:10,321 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 13:02:10,321 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 13:02:10,755 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-18 13:02:11,013 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 13:02:11,088 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 13:02:11,394 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 13:02:11,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:02:12,238 INFO L353 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2022-01-18 13:02:12,238 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 114 treesize of output 116 [2022-01-18 13:02:12,255 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:02:12,255 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 163 treesize of output 173 [2022-01-18 13:02:12,259 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 67 treesize of output 49 [2022-01-18 13:02:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 13:02:13,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80021199] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:02:13,175 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:02:13,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 25, 25] total 71 [2022-01-18 13:02:13,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523849376] [2022-01-18 13:02:13,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:02:13,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-18 13:02:13,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:02:13,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-18 13:02:13,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=4662, Unknown=6, NotChecked=0, Total=4970 [2022-01-18 13:02:13,177 INFO L87 Difference]: Start difference. First operand 2019 states and 5006 transitions. Second operand has 71 states, 71 states have (on average 4.267605633802817) internal successors, (303), 71 states have internal predecessors, (303), 0 states have call successors, (0), 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 13:02:18,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:02:18,107 INFO L93 Difference]: Finished difference Result 3189 states and 7921 transitions. [2022-01-18 13:02:18,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 13:02:18,107 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.267605633802817) internal successors, (303), 71 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-18 13:02:18,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:02:18,113 INFO L225 Difference]: With dead ends: 3189 [2022-01-18 13:02:18,113 INFO L226 Difference]: Without dead ends: 2765 [2022-01-18 13:02:18,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 207 SyntacticMatches, 4 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5234 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1542, Invalid=17358, Unknown=6, NotChecked=0, Total=18906 [2022-01-18 13:02:18,115 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 2401 mSDsluCounter, 5315 mSDsCounter, 0 mSdLazyCounter, 2810 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 4973 SdHoareTripleChecker+Invalid, 3895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 925 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:02:18,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2401 Valid, 4973 Invalid, 3895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2810 Invalid, 0 Unknown, 925 Unchecked, 1.1s Time] [2022-01-18 13:02:18,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2022-01-18 13:02:18,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2031. [2022-01-18 13:02:18,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 2030 states have (on average 2.476354679802956) internal successors, (5027), 2030 states have internal predecessors, (5027), 0 states have call successors, (0), 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 13:02:18,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 5027 transitions. [2022-01-18 13:02:18,149 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 5027 transitions. Word has length 123 [2022-01-18 13:02:18,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:02:18,149 INFO L470 AbstractCegarLoop]: Abstraction has 2031 states and 5027 transitions. [2022-01-18 13:02:18,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.267605633802817) internal successors, (303), 71 states have internal predecessors, (303), 0 states have call successors, (0), 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 13:02:18,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 5027 transitions. [2022-01-18 13:02:18,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 13:02:18,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:02:18,152 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 13:02:18,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-01-18 13:02:18,374 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,SelfDestructingSolverStorable16 [2022-01-18 13:02:18,374 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:02:18,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:02:18,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1311724772, now seen corresponding path program 10 times [2022-01-18 13:02:18,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:02:18,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506201225] [2022-01-18 13:02:18,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:02:18,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:02:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:02:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:02:19,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:02:19,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506201225] [2022-01-18 13:02:19,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506201225] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:02:19,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890280674] [2022-01-18 13:02:19,384 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:02:19,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:02:19,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:02:19,385 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 13:02:19,386 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 13:02:19,455 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:02:19,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:02:19,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 13:02:19,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:02:20,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:02:20,585 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 13:02:20,765 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 25 treesize of output 7 [2022-01-18 13:02:21,186 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:02:21,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:02:21,837 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:02:21,837 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 111 treesize of output 95 [2022-01-18 13:02:21,842 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 67 treesize of output 49 [2022-01-18 13:02:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:02:23,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890280674] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:02:23,534 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:02:23,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 86 [2022-01-18 13:02:23,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84123909] [2022-01-18 13:02:23,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:02:23,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 13:02:23,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:02:23,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 13:02:23,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=6795, Unknown=2, NotChecked=0, Total=7310 [2022-01-18 13:02:23,536 INFO L87 Difference]: Start difference. First operand 2031 states and 5027 transitions. Second operand has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 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 13:02:32,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:02:32,874 INFO L93 Difference]: Finished difference Result 3749 states and 9367 transitions. [2022-01-18 13:02:32,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-18 13:02:32,874 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-18 13:02:32,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:02:32,879 INFO L225 Difference]: With dead ends: 3749 [2022-01-18 13:02:32,879 INFO L226 Difference]: Without dead ends: 3375 [2022-01-18 13:02:32,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 191 SyntacticMatches, 6 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9392 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=2955, Invalid=27145, Unknown=2, NotChecked=0, Total=30102 [2022-01-18 13:02:32,881 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 3292 mSDsluCounter, 8411 mSDsCounter, 0 mSdLazyCounter, 4626 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3292 SdHoareTripleChecker+Valid, 7863 SdHoareTripleChecker+Invalid, 5210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 4626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 290 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:02:32,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3292 Valid, 7863 Invalid, 5210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 4626 Invalid, 0 Unknown, 290 Unchecked, 1.9s Time] [2022-01-18 13:02:32,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2022-01-18 13:02:32,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 2001. [2022-01-18 13:02:32,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 2000 states have (on average 2.481) internal successors, (4962), 2000 states have internal predecessors, (4962), 0 states have call successors, (0), 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 13:02:32,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 4962 transitions. [2022-01-18 13:02:32,916 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 4962 transitions. Word has length 123 [2022-01-18 13:02:32,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:02:32,916 INFO L470 AbstractCegarLoop]: Abstraction has 2001 states and 4962 transitions. [2022-01-18 13:02:32,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 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 13:02:32,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 4962 transitions. [2022-01-18 13:02:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 13:02:32,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:02:32,920 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 13:02:32,943 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 13:02:33,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:02:33,136 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:02:33,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:02:33,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1025385696, now seen corresponding path program 11 times [2022-01-18 13:02:33,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:02:33,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204384262] [2022-01-18 13:02:33,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:02:33,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:02:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:02:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:02:34,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:02:34,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204384262] [2022-01-18 13:02:34,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204384262] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:02:34,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222208750] [2022-01-18 13:02:34,030 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:02:34,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:02:34,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:02:34,031 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 13:02:34,031 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 13:02:34,111 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:02:34,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:02:34,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-18 13:02:34,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:02:35,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:02:35,177 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 13:02:35,280 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 25 treesize of output 7 [2022-01-18 13:02:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:02:35,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:02:36,458 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:02:36,459 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 111 treesize of output 95 [2022-01-18 13:02:36,462 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 67 treesize of output 49 [2022-01-18 13:02:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:02:38,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222208750] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:02:38,360 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:02:38,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 86 [2022-01-18 13:02:38,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260940253] [2022-01-18 13:02:38,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:02:38,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 13:02:38,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:02:38,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 13:02:38,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=6712, Unknown=1, NotChecked=0, Total=7310 [2022-01-18 13:02:38,364 INFO L87 Difference]: Start difference. First operand 2001 states and 4962 transitions. Second operand has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 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 13:02:46,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:02:46,393 INFO L93 Difference]: Finished difference Result 3460 states and 8678 transitions. [2022-01-18 13:02:46,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 13:02:46,393 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-18 13:02:46,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:02:46,398 INFO L225 Difference]: With dead ends: 3460 [2022-01-18 13:02:46,398 INFO L226 Difference]: Without dead ends: 3172 [2022-01-18 13:02:46,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 191 SyntacticMatches, 8 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8495 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=3015, Invalid=24044, Unknown=1, NotChecked=0, Total=27060 [2022-01-18 13:02:46,400 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 3789 mSDsluCounter, 6787 mSDsCounter, 0 mSdLazyCounter, 3509 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3789 SdHoareTripleChecker+Valid, 6397 SdHoareTripleChecker+Invalid, 4210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 3509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:02:46,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3789 Valid, 6397 Invalid, 4210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 3509 Invalid, 0 Unknown, 321 Unchecked, 1.6s Time] [2022-01-18 13:02:46,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2022-01-18 13:02:46,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 1989. [2022-01-18 13:02:46,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1989 states, 1988 states have (on average 2.483400402414487) internal successors, (4937), 1988 states have internal predecessors, (4937), 0 states have call successors, (0), 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 13:02:46,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 4937 transitions. [2022-01-18 13:02:46,431 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 4937 transitions. Word has length 123 [2022-01-18 13:02:46,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:02:46,432 INFO L470 AbstractCegarLoop]: Abstraction has 1989 states and 4937 transitions. [2022-01-18 13:02:46,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 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 13:02:46,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 4937 transitions. [2022-01-18 13:02:46,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 13:02:46,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:02:46,435 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 13:02:46,459 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 13:02:46,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:02:46,657 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:02:46,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:02:46,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1278814812, now seen corresponding path program 12 times [2022-01-18 13:02:46,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:02:46,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599200374] [2022-01-18 13:02:46,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:02:46,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:02:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:02:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:02:47,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:02:47,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599200374] [2022-01-18 13:02:47,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599200374] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:02:47,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302769266] [2022-01-18 13:02:47,827 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:02:47,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:02:47,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:02:47,828 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 13:02:47,828 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 13:02:47,920 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:02:47,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:02:47,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 68 conjunts are in the unsatisfiable core [2022-01-18 13:02:47,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:02:47,949 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:02:48,199 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:02:48,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:02:49,285 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 13:02:49,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 13:02:49,460 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:02:49,460 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 13:02:49,879 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:02:49,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:02:50,509 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:02:50,509 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 82 treesize of output 74 [2022-01-18 13:02:50,512 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 53 treesize of output 47 [2022-01-18 13:02:50,514 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 47 treesize of output 41 [2022-01-18 13:02:52,499 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 10 treesize of output 8 [2022-01-18 13:02:52,521 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:02:52,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302769266] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:02:52,521 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:02:52,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 31, 31] total 86 [2022-01-18 13:02:52,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035319164] [2022-01-18 13:02:52,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:02:52,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 13:02:52,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:02:52,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 13:02:52,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=6766, Unknown=4, NotChecked=0, Total=7310 [2022-01-18 13:02:52,523 INFO L87 Difference]: Start difference. First operand 1989 states and 4937 transitions. Second operand has 86 states, 86 states have (on average 3.5232558139534884) internal successors, (303), 86 states have internal predecessors, (303), 0 states have call successors, (0), 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 13:02:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:02:59,499 INFO L93 Difference]: Finished difference Result 3134 states and 7768 transitions. [2022-01-18 13:02:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 13:02:59,499 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.5232558139534884) internal successors, (303), 86 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-18 13:02:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:02:59,504 INFO L225 Difference]: With dead ends: 3134 [2022-01-18 13:02:59,504 INFO L226 Difference]: Without dead ends: 2660 [2022-01-18 13:02:59,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 198 SyntacticMatches, 27 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8194 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=2395, Invalid=21777, Unknown=8, NotChecked=0, Total=24180 [2022-01-18 13:02:59,506 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 2354 mSDsluCounter, 7106 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2354 SdHoareTripleChecker+Valid, 6853 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 379 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:02:59,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2354 Valid, 6853 Invalid, 3041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2515 Invalid, 0 Unknown, 379 Unchecked, 1.0s Time] [2022-01-18 13:02:59,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2022-01-18 13:02:59,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2083. [2022-01-18 13:02:59,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2082 states have (on average 2.4817483189241116) internal successors, (5167), 2082 states have internal predecessors, (5167), 0 states have call successors, (0), 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 13:02:59,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 5167 transitions. [2022-01-18 13:02:59,532 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 5167 transitions. Word has length 123 [2022-01-18 13:02:59,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:02:59,533 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 5167 transitions. [2022-01-18 13:02:59,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.5232558139534884) internal successors, (303), 86 states have internal predecessors, (303), 0 states have call successors, (0), 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 13:02:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 5167 transitions. [2022-01-18 13:02:59,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 13:02:59,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:02:59,536 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 13:02:59,559 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 13:02:59,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:02:59,755 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:02:59,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:02:59,756 INFO L85 PathProgramCache]: Analyzing trace with hash -877278444, now seen corresponding path program 13 times [2022-01-18 13:02:59,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:02:59,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648491446] [2022-01-18 13:02:59,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:02:59,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:02:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:00,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:00,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648491446] [2022-01-18 13:03:00,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648491446] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:03:00,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788186430] [2022-01-18 13:03:00,758 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:03:00,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:00,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:03:00,759 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 13:03:00,761 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 13:03:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:00,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-18 13:03:00,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:03:00,907 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:03:01,240 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:03:01,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:03:01,406 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:03:01,566 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:03:01,974 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:03:02,277 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 13:03:02,444 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 13:03:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:02,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:03:05,355 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-18 13:03:05,356 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 112 treesize of output 88 [2022-01-18 13:03:05,379 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:03:05,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 391 treesize of output 431 [2022-01-18 13:03:05,390 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:03:05,390 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 431 treesize of output 417 [2022-01-18 13:03:05,413 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 269 treesize of output 245 [2022-01-18 13:03:05,422 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 245 treesize of output 221 [2022-01-18 13:03:07,167 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 10 treesize of output 8 [2022-01-18 13:03:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:07,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788186430] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:03:07,189 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:03:07,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 34] total 89 [2022-01-18 13:03:07,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876172209] [2022-01-18 13:03:07,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:03:07,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-18 13:03:07,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:03:07,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-18 13:03:07,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=7134, Unknown=91, NotChecked=0, Total=7832 [2022-01-18 13:03:07,191 INFO L87 Difference]: Start difference. First operand 2083 states and 5167 transitions. Second operand has 89 states, 89 states have (on average 3.550561797752809) internal successors, (316), 89 states have internal predecessors, (316), 0 states have call successors, (0), 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 13:03:14,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:14,084 INFO L93 Difference]: Finished difference Result 2973 states and 7314 transitions. [2022-01-18 13:03:14,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 13:03:14,085 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 3.550561797752809) internal successors, (316), 89 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-18 13:03:14,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:03:14,088 INFO L225 Difference]: With dead ends: 2973 [2022-01-18 13:03:14,088 INFO L226 Difference]: Without dead ends: 2726 [2022-01-18 13:03:14,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 195 SyntacticMatches, 9 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6568 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=2060, Invalid=18707, Unknown=113, NotChecked=0, Total=20880 [2022-01-18 13:03:14,090 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 2263 mSDsluCounter, 5143 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2263 SdHoareTripleChecker+Valid, 4809 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1636 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:03:14,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2263 Valid, 4809 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1609 Invalid, 0 Unknown, 1636 Unchecked, 0.7s Time] [2022-01-18 13:03:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2022-01-18 13:03:14,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2083. [2022-01-18 13:03:14,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2082 states have (on average 2.4817483189241116) internal successors, (5167), 2082 states have internal predecessors, (5167), 0 states have call successors, (0), 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 13:03:14,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 5167 transitions. [2022-01-18 13:03:14,115 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 5167 transitions. Word has length 123 [2022-01-18 13:03:14,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:03:14,115 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 5167 transitions. [2022-01-18 13:03:14,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 3.550561797752809) internal successors, (316), 89 states have internal predecessors, (316), 0 states have call successors, (0), 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 13:03:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 5167 transitions. [2022-01-18 13:03:14,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 13:03:14,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:03:14,119 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 13:03:14,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-01-18 13:03:14,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:14,336 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:03:14,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:03:14,336 INFO L85 PathProgramCache]: Analyzing trace with hash 809515352, now seen corresponding path program 14 times [2022-01-18 13:03:14,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:03:14,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063084576] [2022-01-18 13:03:14,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:14,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:03:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:15,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:15,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063084576] [2022-01-18 13:03:15,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063084576] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:03:15,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745307348] [2022-01-18 13:03:15,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:03:15,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:15,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:03:15,243 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 13:03:15,244 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 13:03:15,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:03:15,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:03:15,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 54 conjunts are in the unsatisfiable core [2022-01-18 13:03:15,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:03:16,348 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 13:03:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:16,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:03:17,105 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:03:17,106 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 40 treesize of output 32 [2022-01-18 13:03:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:18,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745307348] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:03:18,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:03:18,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29, 24] total 74 [2022-01-18 13:03:18,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968474249] [2022-01-18 13:03:18,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:03:18,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-18 13:03:18,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:03:18,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-18 13:03:18,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=4725, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 13:03:18,351 INFO L87 Difference]: Start difference. First operand 2083 states and 5167 transitions. Second operand has 74 states, 74 states have (on average 4.013513513513513) internal successors, (297), 74 states have internal predecessors, (297), 0 states have call successors, (0), 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 13:03:21,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:21,949 INFO L93 Difference]: Finished difference Result 2897 states and 7141 transitions. [2022-01-18 13:03:21,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 13:03:21,950 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 4.013513513513513) internal successors, (297), 74 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-18 13:03:21,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:03:21,954 INFO L225 Difference]: With dead ends: 2897 [2022-01-18 13:03:21,954 INFO L226 Difference]: Without dead ends: 2569 [2022-01-18 13:03:21,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 198 SyntacticMatches, 7 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5453 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2188, Invalid=14324, Unknown=0, NotChecked=0, Total=16512 [2022-01-18 13:03:21,956 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 2140 mSDsluCounter, 5489 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 5234 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 394 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:03:21,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2140 Valid, 5234 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1996 Invalid, 0 Unknown, 394 Unchecked, 0.8s Time] [2022-01-18 13:03:21,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2022-01-18 13:03:21,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1945. [2022-01-18 13:03:21,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1945 states, 1944 states have (on average 2.483539094650206) internal successors, (4828), 1944 states have internal predecessors, (4828), 0 states have call successors, (0), 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 13:03:21,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 4828 transitions. [2022-01-18 13:03:21,982 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 4828 transitions. Word has length 123 [2022-01-18 13:03:21,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:03:21,983 INFO L470 AbstractCegarLoop]: Abstraction has 1945 states and 4828 transitions. [2022-01-18 13:03:21,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 4.013513513513513) internal successors, (297), 74 states have internal predecessors, (297), 0 states have call successors, (0), 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 13:03:21,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 4828 transitions. [2022-01-18 13:03:21,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 13:03:21,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:03:21,986 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:03:22,007 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 13:03:22,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:22,199 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:03:22,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:03:22,200 INFO L85 PathProgramCache]: Analyzing trace with hash 53092897, now seen corresponding path program 15 times [2022-01-18 13:03:22,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:03:22,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55367058] [2022-01-18 13:03:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:22,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:03:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:23,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:23,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55367058] [2022-01-18 13:03:23,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55367058] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:03:23,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785978260] [2022-01-18 13:03:23,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:03:23,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:23,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:03:23,926 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 13:03:23,930 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 13:03:24,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 13:03:24,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:03:24,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-18 13:03:24,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:03:24,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:03:24,967 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 13:03:25,064 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 13:03:25,276 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 13:03:25,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:03:25,515 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_615 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_615) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))) (or (let ((.cse0 (+ c_~s~0 .cse1))) (and (<= c_~N~0 .cse0) (<= .cse0 c_~N~0))) (= .cse1 0)))) is different from false [2022-01-18 13:03:25,783 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:03:25,784 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 111 treesize of output 95 [2022-01-18 13:03:25,787 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 67 treesize of output 49 [2022-01-18 13:03:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 13:03:26,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785978260] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:03:26,762 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:03:26,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 23, 23] total 73 [2022-01-18 13:03:26,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466626074] [2022-01-18 13:03:26,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:03:26,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-18 13:03:26,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:03:26,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-18 13:03:26,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=4825, Unknown=1, NotChecked=140, Total=5256 [2022-01-18 13:03:26,764 INFO L87 Difference]: Start difference. First operand 1945 states and 4828 transitions. Second operand has 73 states, 73 states have (on average 4.219178082191781) internal successors, (308), 73 states have internal predecessors, (308), 0 states have call successors, (0), 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 13:03:32,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:32,328 INFO L93 Difference]: Finished difference Result 3440 states and 8479 transitions. [2022-01-18 13:03:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 13:03:32,328 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 4.219178082191781) internal successors, (308), 73 states have internal predecessors, (308), 0 states have call successors, (0), 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 130 [2022-01-18 13:03:32,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:03:32,332 INFO L225 Difference]: With dead ends: 3440 [2022-01-18 13:03:32,332 INFO L226 Difference]: Without dead ends: 3176 [2022-01-18 13:03:32,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 232 SyntacticMatches, 9 SemanticMatches, 129 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4541 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1619, Invalid=15154, Unknown=1, NotChecked=256, Total=17030 [2022-01-18 13:03:32,333 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 2401 mSDsluCounter, 6682 mSDsCounter, 0 mSdLazyCounter, 3699 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 6290 SdHoareTripleChecker+Invalid, 4464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 3699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 646 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:03:32,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2401 Valid, 6290 Invalid, 4464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 3699 Invalid, 0 Unknown, 646 Unchecked, 1.6s Time] [2022-01-18 13:03:32,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2022-01-18 13:03:32,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 1954. [2022-01-18 13:03:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1953 states have (on average 2.459805427547363) internal successors, (4804), 1953 states have internal predecessors, (4804), 0 states have call successors, (0), 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 13:03:32,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 4804 transitions. [2022-01-18 13:03:32,357 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 4804 transitions. Word has length 130 [2022-01-18 13:03:32,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:03:32,357 INFO L470 AbstractCegarLoop]: Abstraction has 1954 states and 4804 transitions. [2022-01-18 13:03:32,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 4.219178082191781) internal successors, (308), 73 states have internal predecessors, (308), 0 states have call successors, (0), 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 13:03:32,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 4804 transitions. [2022-01-18 13:03:32,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 13:03:32,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:03:32,360 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:03:32,375 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 13:03:32,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:32,560 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:03:32,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:03:32,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1694119649, now seen corresponding path program 16 times [2022-01-18 13:03:32,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:03:32,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644097547] [2022-01-18 13:03:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:32,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:03:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:33,982 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:33,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:33,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644097547] [2022-01-18 13:03:33,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644097547] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:03:33,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101530385] [2022-01-18 13:03:33,982 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:03:33,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:33,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:03:33,983 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 13:03:33,984 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 13:03:34,063 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:03:34,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:03:34,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 67 conjunts are in the unsatisfiable core [2022-01-18 13:03:34,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:03:34,114 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:03:34,355 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:03:34,355 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:03:35,498 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 13:03:35,630 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 25 treesize of output 7 [2022-01-18 13:03:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:36,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:03:36,751 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:03:36,752 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 111 treesize of output 95 [2022-01-18 13:03:36,755 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 67 treesize of output 49 [2022-01-18 13:03:38,869 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 10 treesize of output 8 [2022-01-18 13:03:38,891 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:38,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101530385] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:03:38,891 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:03:38,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 91 [2022-01-18 13:03:38,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776208461] [2022-01-18 13:03:38,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:03:38,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-18 13:03:38,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:03:38,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-18 13:03:38,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=552, Invalid=7634, Unknown=4, NotChecked=0, Total=8190 [2022-01-18 13:03:38,894 INFO L87 Difference]: Start difference. First operand 1954 states and 4804 transitions. Second operand has 91 states, 91 states have (on average 3.5824175824175826) internal successors, (326), 91 states have internal predecessors, (326), 0 states have call successors, (0), 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 13:03:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:49,596 INFO L93 Difference]: Finished difference Result 4902 states and 12336 transitions. [2022-01-18 13:03:49,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-18 13:03:49,596 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.5824175824175826) internal successors, (326), 91 states have internal predecessors, (326), 0 states have call successors, (0), 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 130 [2022-01-18 13:03:49,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:03:49,602 INFO L225 Difference]: With dead ends: 4902 [2022-01-18 13:03:49,602 INFO L226 Difference]: Without dead ends: 4481 [2022-01-18 13:03:49,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 206 SyntacticMatches, 16 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11924 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=3231, Invalid=32670, Unknown=9, NotChecked=0, Total=35910 [2022-01-18 13:03:49,604 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 4128 mSDsluCounter, 7422 mSDsCounter, 0 mSdLazyCounter, 3945 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4128 SdHoareTripleChecker+Valid, 6956 SdHoareTripleChecker+Invalid, 5570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 3945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1198 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:03:49,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4128 Valid, 6956 Invalid, 5570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 3945 Invalid, 0 Unknown, 1198 Unchecked, 1.8s Time] [2022-01-18 13:03:49,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4481 states. [2022-01-18 13:03:49,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4481 to 2167. [2022-01-18 13:03:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 2166 states have (on average 2.4778393351800556) internal successors, (5367), 2166 states have internal predecessors, (5367), 0 states have call successors, (0), 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 13:03:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 5367 transitions. [2022-01-18 13:03:49,646 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 5367 transitions. Word has length 130 [2022-01-18 13:03:49,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:03:49,647 INFO L470 AbstractCegarLoop]: Abstraction has 2167 states and 5367 transitions. [2022-01-18 13:03:49,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.5824175824175826) internal successors, (326), 91 states have internal predecessors, (326), 0 states have call successors, (0), 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 13:03:49,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 5367 transitions. [2022-01-18 13:03:49,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 13:03:49,651 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:03:49,651 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:03:49,677 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 13:03:49,873 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,SelfDestructingSolverStorable23 [2022-01-18 13:03:49,873 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:03:49,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:03:49,874 INFO L85 PathProgramCache]: Analyzing trace with hash 170806729, now seen corresponding path program 17 times [2022-01-18 13:03:49,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:03:49,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404107152] [2022-01-18 13:03:49,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:49,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:03:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:51,158 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:51,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:51,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404107152] [2022-01-18 13:03:51,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404107152] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:03:51,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82359569] [2022-01-18 13:03:51,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:03:51,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:51,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:03:51,160 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 13:03:51,161 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 13:03:51,249 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 13:03:51,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:03:51,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-18 13:03:51,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:03:51,279 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:03:51,433 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:03:51,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:03:51,988 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 13:03:52,065 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 13:03:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 13:03:52,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:03:52,769 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:03:52,769 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 82 treesize of output 74 [2022-01-18 13:03:52,775 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 53 treesize of output 47 [2022-01-18 13:03:52,778 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 47 treesize of output 41 [2022-01-18 13:03:53,617 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 10 treesize of output 8 [2022-01-18 13:03:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 13:03:53,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82359569] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:03:53,637 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:03:53,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 22, 22] total 62 [2022-01-18 13:03:53,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845677684] [2022-01-18 13:03:53,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:03:53,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-18 13:03:53,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:03:53,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-18 13:03:53,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3558, Unknown=4, NotChecked=0, Total=3782 [2022-01-18 13:03:53,638 INFO L87 Difference]: Start difference. First operand 2167 states and 5367 transitions. Second operand has 62 states, 62 states have (on average 4.370967741935484) internal successors, (271), 62 states have internal predecessors, (271), 0 states have call successors, (0), 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 13:03:58,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:58,189 INFO L93 Difference]: Finished difference Result 3030 states and 7583 transitions. [2022-01-18 13:03:58,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 13:03:58,190 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.370967741935484) internal successors, (271), 62 states have internal predecessors, (271), 0 states have call successors, (0), 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 130 [2022-01-18 13:03:58,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:03:58,194 INFO L225 Difference]: With dead ends: 3030 [2022-01-18 13:03:58,194 INFO L226 Difference]: Without dead ends: 2806 [2022-01-18 13:03:58,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 238 SyntacticMatches, 3 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4422 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1451, Invalid=15056, Unknown=5, NotChecked=0, Total=16512 [2022-01-18 13:03:58,195 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 1861 mSDsluCounter, 6100 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 5784 SdHoareTripleChecker+Invalid, 3925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 717 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:03:58,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1861 Valid, 5784 Invalid, 3925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 3101 Invalid, 0 Unknown, 717 Unchecked, 1.3s Time] [2022-01-18 13:03:58,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2022-01-18 13:03:58,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 1973. [2022-01-18 13:03:58,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1972 states have (on average 2.496450304259635) internal successors, (4923), 1972 states have internal predecessors, (4923), 0 states have call successors, (0), 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 13:03:58,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 4923 transitions. [2022-01-18 13:03:58,218 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 4923 transitions. Word has length 130 [2022-01-18 13:03:58,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:03:58,218 INFO L470 AbstractCegarLoop]: Abstraction has 1973 states and 4923 transitions. [2022-01-18 13:03:58,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.370967741935484) internal successors, (271), 62 states have internal predecessors, (271), 0 states have call successors, (0), 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 13:03:58,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 4923 transitions. [2022-01-18 13:03:58,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 13:03:58,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:03:58,221 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:03:58,237 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 13:03:58,421 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,SelfDestructingSolverStorable24 [2022-01-18 13:03:58,422 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:03:58,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:03:58,422 INFO L85 PathProgramCache]: Analyzing trace with hash -452051231, now seen corresponding path program 18 times [2022-01-18 13:03:58,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:03:58,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453472658] [2022-01-18 13:03:58,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:58,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:03:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:59,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:59,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453472658] [2022-01-18 13:03:59,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453472658] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:03:59,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438422090] [2022-01-18 13:03:59,780 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:03:59,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:59,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:03:59,781 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 13:03:59,781 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 13:03:59,880 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:03:59,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:03:59,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 45 conjunts are in the unsatisfiable core [2022-01-18 13:03:59,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:03:59,913 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:04:00,086 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:04:00,086 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:04:00,622 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 13:04:00,693 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 13:04:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 13:04:01,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:04:01,553 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:04:01,554 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 111 treesize of output 95 [2022-01-18 13:04:01,556 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 67 treesize of output 49 [2022-01-18 13:04:02,333 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 10 treesize of output 8 [2022-01-18 13:04:02,354 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 13:04:02,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438422090] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:04:02,354 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:04:02,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 23, 23] total 63 [2022-01-18 13:04:02,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905415233] [2022-01-18 13:04:02,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:04:02,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-18 13:04:02,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:04:02,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-18 13:04:02,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=3673, Unknown=3, NotChecked=0, Total=3906 [2022-01-18 13:04:02,356 INFO L87 Difference]: Start difference. First operand 1973 states and 4923 transitions. Second operand has 63 states, 63 states have (on average 4.285714285714286) internal successors, (270), 63 states have internal predecessors, (270), 0 states have call successors, (0), 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 13:04:06,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:04:06,656 INFO L93 Difference]: Finished difference Result 2693 states and 6790 transitions. [2022-01-18 13:04:06,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 13:04:06,657 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.285714285714286) internal successors, (270), 63 states have internal predecessors, (270), 0 states have call successors, (0), 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 130 [2022-01-18 13:04:06,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:04:06,661 INFO L225 Difference]: With dead ends: 2693 [2022-01-18 13:04:06,661 INFO L226 Difference]: Without dead ends: 2528 [2022-01-18 13:04:06,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 234 SyntacticMatches, 3 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3721 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1299, Invalid=12978, Unknown=3, NotChecked=0, Total=14280 [2022-01-18 13:04:06,662 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 1778 mSDsluCounter, 5852 mSDsCounter, 0 mSdLazyCounter, 3157 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1778 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 3647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 405 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:04:06,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1778 Valid, 5567 Invalid, 3647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 3157 Invalid, 0 Unknown, 405 Unchecked, 1.3s Time] [2022-01-18 13:04:06,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2022-01-18 13:04:06,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 1944. [2022-01-18 13:04:06,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1944 states, 1943 states have (on average 2.4930519814719507) internal successors, (4844), 1943 states have internal predecessors, (4844), 0 states have call successors, (0), 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 13:04:06,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 4844 transitions. [2022-01-18 13:04:06,683 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 4844 transitions. Word has length 130 [2022-01-18 13:04:06,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:04:06,684 INFO L470 AbstractCegarLoop]: Abstraction has 1944 states and 4844 transitions. [2022-01-18 13:04:06,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.285714285714286) internal successors, (270), 63 states have internal predecessors, (270), 0 states have call successors, (0), 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 13:04:06,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 4844 transitions. [2022-01-18 13:04:06,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 13:04:06,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:04:06,687 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:04:06,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 13:04:06,903 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,SelfDestructingSolverStorable25 [2022-01-18 13:04:06,903 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:04:06,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:04:06,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2009562423, now seen corresponding path program 19 times [2022-01-18 13:04:06,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:04:06,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060654929] [2022-01-18 13:04:06,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:04:06,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:04:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:04:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:04:08,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:04:08,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060654929] [2022-01-18 13:04:08,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060654929] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:04:08,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711196033] [2022-01-18 13:04:08,317 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:04:08,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:04:08,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:04:08,319 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 13:04:08,319 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 13:04:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:04:08,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-18 13:04:08,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:04:09,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:04:09,739 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 13:04:09,861 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 25 treesize of output 7 [2022-01-18 13:04:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:04:10,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:04:11,038 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:04:11,039 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 111 treesize of output 95 [2022-01-18 13:04:11,042 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 67 treesize of output 49 [2022-01-18 13:04:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:04:12,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711196033] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:04:12,891 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:04:12,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 92 [2022-01-18 13:04:12,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043405874] [2022-01-18 13:04:12,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:04:12,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-01-18 13:04:12,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:04:12,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-01-18 13:04:12,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=7892, Unknown=3, NotChecked=0, Total=8372 [2022-01-18 13:04:12,892 INFO L87 Difference]: Start difference. First operand 1944 states and 4844 transitions. Second operand has 92 states, 92 states have (on average 3.652173913043478) internal successors, (336), 92 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:04:22,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:04:22,290 INFO L93 Difference]: Finished difference Result 3128 states and 7793 transitions. [2022-01-18 13:04:22,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-18 13:04:22,291 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 3.652173913043478) internal successors, (336), 92 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-01-18 13:04:22,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:04:22,294 INFO L225 Difference]: With dead ends: 3128 [2022-01-18 13:04:22,294 INFO L226 Difference]: Without dead ends: 2723 [2022-01-18 13:04:22,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 201 SyntacticMatches, 5 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9832 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=3140, Invalid=29437, Unknown=3, NotChecked=0, Total=32580 [2022-01-18 13:04:22,296 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 3613 mSDsluCounter, 7232 mSDsCounter, 0 mSdLazyCounter, 3850 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3613 SdHoareTripleChecker+Valid, 6846 SdHoareTripleChecker+Invalid, 4349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 3850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:04:22,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3613 Valid, 6846 Invalid, 4349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 3850 Invalid, 0 Unknown, 258 Unchecked, 1.6s Time] [2022-01-18 13:04:22,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2022-01-18 13:04:22,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1936. [2022-01-18 13:04:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1936 states, 1935 states have (on average 2.4919896640826873) internal successors, (4822), 1935 states have internal predecessors, (4822), 0 states have call successors, (0), 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 13:04:22,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 4822 transitions. [2022-01-18 13:04:22,319 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 4822 transitions. Word has length 130 [2022-01-18 13:04:22,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:04:22,319 INFO L470 AbstractCegarLoop]: Abstraction has 1936 states and 4822 transitions. [2022-01-18 13:04:22,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 3.652173913043478) internal successors, (336), 92 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:04:22,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 4822 transitions. [2022-01-18 13:04:22,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 13:04:22,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:04:22,322 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:04:22,337 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 13:04:22,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:04:22,522 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:04:22,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:04:22,523 INFO L85 PathProgramCache]: Analyzing trace with hash -454447819, now seen corresponding path program 20 times [2022-01-18 13:04:22,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:04:22,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860577405] [2022-01-18 13:04:22,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:04:22,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:04:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:04:24,010 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:04:24,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:04:24,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860577405] [2022-01-18 13:04:24,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860577405] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:04:24,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475088041] [2022-01-18 13:04:24,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:04:24,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:04:24,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:04:24,012 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 13:04:24,012 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 13:04:24,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:04:24,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:04:24,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 67 conjunts are in the unsatisfiable core [2022-01-18 13:04:24,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:04:24,126 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:04:24,364 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:04:24,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:04:25,486 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 13:04:25,619 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 25 treesize of output 7 [2022-01-18 13:04:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:04:26,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:04:26,826 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:04:26,826 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 111 treesize of output 95 [2022-01-18 13:04:26,829 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 67 treesize of output 49 [2022-01-18 13:04:28,943 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 10 treesize of output 8 [2022-01-18 13:04:28,966 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:04:28,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475088041] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:04:28,966 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:04:28,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 34, 34] total 94 [2022-01-18 13:04:28,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411113479] [2022-01-18 13:04:28,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:04:28,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-18 13:04:28,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:04:28,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-18 13:04:28,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=8225, Unknown=3, NotChecked=0, Total=8742 [2022-01-18 13:04:28,967 INFO L87 Difference]: Start difference. First operand 1936 states and 4822 transitions. Second operand has 94 states, 94 states have (on average 3.4468085106382977) internal successors, (324), 94 states have internal predecessors, (324), 0 states have call successors, (0), 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 13:04:38,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:04:38,244 INFO L93 Difference]: Finished difference Result 3499 states and 8838 transitions. [2022-01-18 13:04:38,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-18 13:04:38,244 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 3.4468085106382977) internal successors, (324), 94 states have internal predecessors, (324), 0 states have call successors, (0), 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 130 [2022-01-18 13:04:38,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:04:38,249 INFO L225 Difference]: With dead ends: 3499 [2022-01-18 13:04:38,249 INFO L226 Difference]: Without dead ends: 3242 [2022-01-18 13:04:38,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 205 SyntacticMatches, 9 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11186 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=3007, Invalid=32135, Unknown=14, NotChecked=0, Total=35156 [2022-01-18 13:04:38,251 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 2958 mSDsluCounter, 8099 mSDsCounter, 0 mSdLazyCounter, 4251 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2958 SdHoareTripleChecker+Valid, 7669 SdHoareTripleChecker+Invalid, 5274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 4251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 805 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:04:38,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2958 Valid, 7669 Invalid, 5274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 4251 Invalid, 0 Unknown, 805 Unchecked, 1.8s Time] [2022-01-18 13:04:38,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2022-01-18 13:04:38,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 2116. [2022-01-18 13:04:38,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 2115 states have (on average 2.523404255319149) internal successors, (5337), 2115 states have internal predecessors, (5337), 0 states have call successors, (0), 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 13:04:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 5337 transitions. [2022-01-18 13:04:38,297 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 5337 transitions. Word has length 130 [2022-01-18 13:04:38,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:04:38,297 INFO L470 AbstractCegarLoop]: Abstraction has 2116 states and 5337 transitions. [2022-01-18 13:04:38,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.4468085106382977) internal successors, (324), 94 states have internal predecessors, (324), 0 states have call successors, (0), 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 13:04:38,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 5337 transitions. [2022-01-18 13:04:38,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-18 13:04:38,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:04:38,300 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2022-01-18 13:04:38,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 13:04:38,511 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,SelfDestructingSolverStorable27 [2022-01-18 13:04:38,512 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:04:38,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:04:38,512 INFO L85 PathProgramCache]: Analyzing trace with hash -477262696, now seen corresponding path program 21 times [2022-01-18 13:04:38,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:04:38,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46533411] [2022-01-18 13:04:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:04:38,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:04:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:04:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:04:38,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:04:38,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46533411] [2022-01-18 13:04:38,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46533411] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:04:38,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825536566] [2022-01-18 13:04:38,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:04:38,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:04:38,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:04:38,641 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 13:04:38,672 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 13:04:38,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 13:04:38,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:04:38,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 13:04:38,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:04:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-18 13:04:38,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:04:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 13:04:39,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825536566] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:04:39,356 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:04:39,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 8] total 23 [2022-01-18 13:04:39,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377527934] [2022-01-18 13:04:39,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:04:39,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 13:04:39,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:04:39,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 13:04:39,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-01-18 13:04:39,357 INFO L87 Difference]: Start difference. First operand 2116 states and 5337 transitions. Second operand has 23 states, 23 states have (on average 12.652173913043478) internal successors, (291), 23 states have internal predecessors, (291), 0 states have call successors, (0), 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 13:04:39,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:04:39,623 INFO L93 Difference]: Finished difference Result 3970 states and 10095 transitions. [2022-01-18 13:04:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 13:04:39,624 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.652173913043478) internal successors, (291), 23 states have internal predecessors, (291), 0 states have call successors, (0), 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 131 [2022-01-18 13:04:39,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:04:39,628 INFO L225 Difference]: With dead ends: 3970 [2022-01-18 13:04:39,628 INFO L226 Difference]: Without dead ends: 3427 [2022-01-18 13:04:39,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 13:04:39,629 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 1137 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:04:39,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 1281 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:04:39,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3427 states. [2022-01-18 13:04:39,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3427 to 2563. [2022-01-18 13:04:39,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2562 states have (on average 2.610070257611241) internal successors, (6687), 2562 states have internal predecessors, (6687), 0 states have call successors, (0), 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 13:04:39,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 6687 transitions. [2022-01-18 13:04:39,660 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 6687 transitions. Word has length 131 [2022-01-18 13:04:39,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:04:39,661 INFO L470 AbstractCegarLoop]: Abstraction has 2563 states and 6687 transitions. [2022-01-18 13:04:39,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.652173913043478) internal successors, (291), 23 states have internal predecessors, (291), 0 states have call successors, (0), 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 13:04:39,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 6687 transitions. [2022-01-18 13:04:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-18 13:04:39,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:04:39,664 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:04:39,680 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 13:04:39,864 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,SelfDestructingSolverStorable28 [2022-01-18 13:04:39,865 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:04:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:04:39,865 INFO L85 PathProgramCache]: Analyzing trace with hash -491141122, now seen corresponding path program 22 times [2022-01-18 13:04:39,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:04:39,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023497120] [2022-01-18 13:04:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:04:39,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:04:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:04:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:04:40,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:04:40,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023497120] [2022-01-18 13:04:40,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023497120] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:04:40,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873033204] [2022-01-18 13:04:40,864 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:04:40,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:04:40,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:04:40,866 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 13:04:40,867 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 13:04:40,976 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:04:40,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:04:40,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-18 13:04:40,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:04:41,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:04:41,202 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:04:41,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:04:42,103 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 13:04:42,361 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:04:42,362 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 23 [2022-01-18 13:04:42,512 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:04:42,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:04:42,858 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:04:42,859 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 47 treesize of output 47 [2022-01-18 13:04:42,864 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 25 treesize of output 18 [2022-01-18 13:04:45,156 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:04:45,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873033204] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:04:45,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:04:45,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 74 [2022-01-18 13:04:45,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160244240] [2022-01-18 13:04:45,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:04:45,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-18 13:04:45,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:04:45,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-18 13:04:45,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=4904, Unknown=12, NotChecked=0, Total=5402 [2022-01-18 13:04:45,158 INFO L87 Difference]: Start difference. First operand 2563 states and 6687 transitions. Second operand has 74 states, 74 states have (on average 4.581081081081081) internal successors, (339), 74 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 13:04:52,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:04:52,230 INFO L93 Difference]: Finished difference Result 10301 states and 29821 transitions. [2022-01-18 13:04:52,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 13:04:52,231 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 4.581081081081081) internal successors, (339), 74 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 135 [2022-01-18 13:04:52,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:04:52,245 INFO L225 Difference]: With dead ends: 10301 [2022-01-18 13:04:52,245 INFO L226 Difference]: Without dead ends: 9925 [2022-01-18 13:04:52,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 238 SyntacticMatches, 21 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5381 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=2591, Invalid=15757, Unknown=12, NotChecked=0, Total=18360 [2022-01-18 13:04:52,247 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 2393 mSDsluCounter, 5240 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2393 SdHoareTripleChecker+Valid, 5142 SdHoareTripleChecker+Invalid, 3057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1013 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:04:52,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2393 Valid, 5142 Invalid, 3057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1839 Invalid, 0 Unknown, 1013 Unchecked, 0.9s Time] [2022-01-18 13:04:52,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9925 states. [2022-01-18 13:04:52,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9925 to 7679. [2022-01-18 13:04:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7679 states, 7678 states have (on average 2.921594165147174) internal successors, (22432), 7678 states have internal predecessors, (22432), 0 states have call successors, (0), 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 13:04:52,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7679 states to 7679 states and 22432 transitions. [2022-01-18 13:04:52,378 INFO L78 Accepts]: Start accepts. Automaton has 7679 states and 22432 transitions. Word has length 135 [2022-01-18 13:04:52,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:04:52,378 INFO L470 AbstractCegarLoop]: Abstraction has 7679 states and 22432 transitions. [2022-01-18 13:04:52,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 4.581081081081081) internal successors, (339), 74 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 13:04:52,379 INFO L276 IsEmpty]: Start isEmpty. Operand 7679 states and 22432 transitions. [2022-01-18 13:04:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-18 13:04:52,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:04:52,390 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:04:52,405 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 13:04:52,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:04:52,590 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:04:52,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:04:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1444166304, now seen corresponding path program 23 times [2022-01-18 13:04:52,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:04:52,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557856151] [2022-01-18 13:04:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:04:52,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:04:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:04:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:04:53,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:04:53,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557856151] [2022-01-18 13:04:53,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557856151] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:04:53,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499695985] [2022-01-18 13:04:53,601 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:04:53,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:04:53,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:04:53,604 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:04:53,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 13:04:53,729 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 13:04:53,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:04:53,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-18 13:04:53,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:04:53,759 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:04:53,912 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:04:53,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:04:54,512 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 13:04:54,671 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 13:04:54,671 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 13:04:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-18 13:04:54,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:04:54,822 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_880 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_880) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset 4)) 0))) is different from false [2022-01-18 13:04:54,846 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:04:54,846 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 47 treesize of output 47 [2022-01-18 13:04:54,848 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 25 treesize of output 18 [2022-01-18 13:04:55,480 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 5 not checked. [2022-01-18 13:04:55,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499695985] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:04:55,480 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:04:55,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 16, 14] total 46 [2022-01-18 13:04:55,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081926610] [2022-01-18 13:04:55,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:04:55,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 13:04:55,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:04:55,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 13:04:55,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1866, Unknown=1, NotChecked=86, Total=2070 [2022-01-18 13:04:55,482 INFO L87 Difference]: Start difference. First operand 7679 states and 22432 transitions. Second operand has 46 states, 46 states have (on average 5.956521739130435) internal successors, (274), 46 states have internal predecessors, (274), 0 states have call successors, (0), 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 13:04:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:04:59,758 INFO L93 Difference]: Finished difference Result 21861 states and 63347 transitions. [2022-01-18 13:04:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 13:04:59,758 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.956521739130435) internal successors, (274), 46 states have internal predecessors, (274), 0 states have call successors, (0), 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 135 [2022-01-18 13:04:59,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:04:59,795 INFO L225 Difference]: With dead ends: 21861 [2022-01-18 13:04:59,796 INFO L226 Difference]: Without dead ends: 21741 [2022-01-18 13:04:59,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 259 SyntacticMatches, 5 SemanticMatches, 106 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 2608 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1086, Invalid=10259, Unknown=1, NotChecked=210, Total=11556 [2022-01-18 13:04:59,797 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 1636 mSDsluCounter, 9603 mSDsCounter, 0 mSdLazyCounter, 2783 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 9212 SdHoareTripleChecker+Invalid, 3989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1125 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:04:59,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1636 Valid, 9212 Invalid, 3989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2783 Invalid, 0 Unknown, 1125 Unchecked, 1.2s Time] [2022-01-18 13:04:59,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21741 states. [2022-01-18 13:05:00,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21741 to 10759. [2022-01-18 13:05:00,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10759 states, 10758 states have (on average 2.9560327198364007) internal successors, (31801), 10758 states have internal predecessors, (31801), 0 states have call successors, (0), 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 13:05:00,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10759 states to 10759 states and 31801 transitions. [2022-01-18 13:05:00,076 INFO L78 Accepts]: Start accepts. Automaton has 10759 states and 31801 transitions. Word has length 135 [2022-01-18 13:05:00,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:05:00,076 INFO L470 AbstractCegarLoop]: Abstraction has 10759 states and 31801 transitions. [2022-01-18 13:05:00,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.956521739130435) internal successors, (274), 46 states have internal predecessors, (274), 0 states have call successors, (0), 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 13:05:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand 10759 states and 31801 transitions. [2022-01-18 13:05:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-18 13:05:00,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:05:00,092 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:05:00,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 13:05:00,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:00,293 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:05:00,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:05:00,294 INFO L85 PathProgramCache]: Analyzing trace with hash 442989216, now seen corresponding path program 24 times [2022-01-18 13:05:00,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:05:00,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489844052] [2022-01-18 13:05:00,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:05:00,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:05:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:05:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:05:01,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:05:01,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489844052] [2022-01-18 13:05:01,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489844052] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:05:01,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565849800] [2022-01-18 13:05:01,297 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:05:01,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:01,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:05:01,298 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:05:01,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 13:05:01,531 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 13:05:01,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:05:01,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 13:05:01,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:05:02,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:05:02,085 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 13:05:02,172 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 13:05:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 13:05:02,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:05:02,319 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_913 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_913) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset 4)) 0))) is different from false [2022-01-18 13:05:02,342 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:05:02,342 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 47 treesize of output 47 [2022-01-18 13:05:02,344 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 25 treesize of output 18 [2022-01-18 13:05:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 5 not checked. [2022-01-18 13:05:02,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565849800] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:05:02,896 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:05:02,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 14, 14] total 52 [2022-01-18 13:05:02,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926526905] [2022-01-18 13:05:02,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:05:02,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 13:05:02,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:05:02,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 13:05:02,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=2422, Unknown=1, NotChecked=98, Total=2652 [2022-01-18 13:05:02,898 INFO L87 Difference]: Start difference. First operand 10759 states and 31801 transitions. Second operand has 52 states, 52 states have (on average 6.0576923076923075) internal successors, (315), 52 states have internal predecessors, (315), 0 states have call successors, (0), 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 13:05:08,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:05:08,793 INFO L93 Difference]: Finished difference Result 15359 states and 43251 transitions. [2022-01-18 13:05:08,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 13:05:08,794 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 6.0576923076923075) internal successors, (315), 52 states have internal predecessors, (315), 0 states have call successors, (0), 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 135 [2022-01-18 13:05:08,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:05:08,816 INFO L225 Difference]: With dead ends: 15359 [2022-01-18 13:05:08,816 INFO L226 Difference]: Without dead ends: 14252 [2022-01-18 13:05:08,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2287 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1409, Invalid=10584, Unknown=1, NotChecked=216, Total=12210 [2022-01-18 13:05:08,817 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 2513 mSDsluCounter, 7445 mSDsCounter, 0 mSdLazyCounter, 3562 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2513 SdHoareTripleChecker+Valid, 7188 SdHoareTripleChecker+Invalid, 4091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 337 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:05:08,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2513 Valid, 7188 Invalid, 4091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 3562 Invalid, 0 Unknown, 337 Unchecked, 1.6s Time] [2022-01-18 13:05:08,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14252 states. [2022-01-18 13:05:08,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14252 to 8156. [2022-01-18 13:05:08,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8156 states, 8155 states have (on average 2.8954015941140403) internal successors, (23612), 8155 states have internal predecessors, (23612), 0 states have call successors, (0), 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 13:05:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8156 states to 8156 states and 23612 transitions. [2022-01-18 13:05:08,985 INFO L78 Accepts]: Start accepts. Automaton has 8156 states and 23612 transitions. Word has length 135 [2022-01-18 13:05:08,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:05:08,985 INFO L470 AbstractCegarLoop]: Abstraction has 8156 states and 23612 transitions. [2022-01-18 13:05:08,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 6.0576923076923075) internal successors, (315), 52 states have internal predecessors, (315), 0 states have call successors, (0), 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 13:05:08,985 INFO L276 IsEmpty]: Start isEmpty. Operand 8156 states and 23612 transitions. [2022-01-18 13:05:08,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-18 13:05:08,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:05:08,992 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:05:09,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 13:05:09,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:09,194 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:05:09,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:05:09,194 INFO L85 PathProgramCache]: Analyzing trace with hash -464051704, now seen corresponding path program 25 times [2022-01-18 13:05:09,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:05:09,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719591765] [2022-01-18 13:05:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:05:09,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:05:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:05:10,850 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:05:10,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:05:10,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719591765] [2022-01-18 13:05:10,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719591765] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:05:10,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518553962] [2022-01-18 13:05:10,850 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:05:10,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:10,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:05:10,851 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:05:10,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 13:05:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:05:10,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 76 conjunts are in the unsatisfiable core [2022-01-18 13:05:10,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:05:10,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:05:11,238 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:05:11,238 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:05:12,492 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 13:05:12,626 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 25 treesize of output 7 [2022-01-18 13:05:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:05:12,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:05:13,706 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:05:13,706 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 111 treesize of output 95 [2022-01-18 13:05:13,709 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 67 treesize of output 49 [2022-01-18 13:05:16,160 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 10 treesize of output 8 [2022-01-18 13:05:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:05:16,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518553962] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:05:16,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:05:16,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 96 [2022-01-18 13:05:16,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471986789] [2022-01-18 13:05:16,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:05:16,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-18 13:05:16,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:05:16,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-18 13:05:16,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=8443, Unknown=4, NotChecked=0, Total=9120 [2022-01-18 13:05:16,185 INFO L87 Difference]: Start difference. First operand 8156 states and 23612 transitions. Second operand has 96 states, 96 states have (on average 3.6458333333333335) internal successors, (350), 96 states have internal predecessors, (350), 0 states have call successors, (0), 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 13:05:24,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:05:24,067 INFO L93 Difference]: Finished difference Result 13851 states and 39296 transitions. [2022-01-18 13:05:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-18 13:05:24,068 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.6458333333333335) internal successors, (350), 96 states have internal predecessors, (350), 0 states have call successors, (0), 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 137 [2022-01-18 13:05:24,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:05:24,090 INFO L225 Difference]: With dead ends: 13851 [2022-01-18 13:05:24,091 INFO L226 Difference]: Without dead ends: 13545 [2022-01-18 13:05:24,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 217 SyntacticMatches, 7 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10157 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=3138, Invalid=29431, Unknown=11, NotChecked=0, Total=32580 [2022-01-18 13:05:24,093 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 2612 mSDsluCounter, 7137 mSDsCounter, 0 mSdLazyCounter, 3938 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2612 SdHoareTripleChecker+Valid, 6661 SdHoareTripleChecker+Invalid, 5239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 3938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1089 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:05:24,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2612 Valid, 6661 Invalid, 5239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 3938 Invalid, 0 Unknown, 1089 Unchecked, 1.6s Time] [2022-01-18 13:05:24,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13545 states. [2022-01-18 13:05:24,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13545 to 8307. [2022-01-18 13:05:24,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8307 states, 8306 states have (on average 2.885384059715868) internal successors, (23966), 8306 states have internal predecessors, (23966), 0 states have call successors, (0), 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 13:05:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8307 states to 8307 states and 23966 transitions. [2022-01-18 13:05:24,227 INFO L78 Accepts]: Start accepts. Automaton has 8307 states and 23966 transitions. Word has length 137 [2022-01-18 13:05:24,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:05:24,227 INFO L470 AbstractCegarLoop]: Abstraction has 8307 states and 23966 transitions. [2022-01-18 13:05:24,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.6458333333333335) internal successors, (350), 96 states have internal predecessors, (350), 0 states have call successors, (0), 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 13:05:24,227 INFO L276 IsEmpty]: Start isEmpty. Operand 8307 states and 23966 transitions. [2022-01-18 13:05:24,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-18 13:05:24,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:05:24,234 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:05:24,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-01-18 13:05:24,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:24,436 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:05:24,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:05:24,436 INFO L85 PathProgramCache]: Analyzing trace with hash -640819818, now seen corresponding path program 26 times [2022-01-18 13:05:24,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:05:24,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038788389] [2022-01-18 13:05:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:05:24,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:05:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:05:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:05:26,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:05:26,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038788389] [2022-01-18 13:05:26,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038788389] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:05:26,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175592489] [2022-01-18 13:05:26,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:05:26,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:26,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:05:26,121 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:05:26,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 13:05:26,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:05:26,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:05:26,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 70 conjunts are in the unsatisfiable core [2022-01-18 13:05:26,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:05:27,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:05:27,964 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 13:05:28,317 INFO L353 Elim1Store]: treesize reduction 15, result has 16.7 percent of original size [2022-01-18 13:05:28,317 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 25 treesize of output 10 [2022-01-18 13:05:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:05:28,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:05:29,096 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~q_front~0 1))) (or (< .cse0 0) (and (forall ((v_ArrVal_988 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_988) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (forall ((v_ArrVal_988 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_988) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0))) (<= c_~n~0 .cse0) (< (+ |c_thread1Thread1of1ForFork1_#t~post1#1| 1) c_~N~0))) is different from false [2022-01-18 13:05:29,151 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~q_front~0 1))) (or (< .cse0 0) (and (forall ((v_ArrVal_988 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_988) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (forall ((v_ArrVal_988 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_988) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0))) (<= c_~n~0 .cse0) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0))) is different from false [2022-01-18 13:05:29,173 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:05:29,173 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 82 treesize of output 74 [2022-01-18 13:05:29,176 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 53 treesize of output 47 [2022-01-18 13:05:29,178 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 47 treesize of output 41 [2022-01-18 13:05:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:05:31,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175592489] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:05:31,644 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:05:31,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 91 [2022-01-18 13:05:31,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752214074] [2022-01-18 13:05:31,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:05:31,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-18 13:05:31,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:05:31,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-18 13:05:31,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=482, Invalid=7356, Unknown=2, NotChecked=350, Total=8190 [2022-01-18 13:05:31,645 INFO L87 Difference]: Start difference. First operand 8307 states and 23966 transitions. Second operand has 91 states, 91 states have (on average 3.6153846153846154) internal successors, (329), 91 states have internal predecessors, (329), 0 states have call successors, (0), 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 13:05:37,068 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_~q_front~0 1))) (or (< .cse0 0) (and (forall ((v_ArrVal_988 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_988) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (forall ((v_ArrVal_988 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_988) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0))) (<= c_~n~0 .cse0) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0))) (= c_~s~0 0)) is different from false [2022-01-18 13:05:38,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:05:38,102 INFO L93 Difference]: Finished difference Result 11435 states and 32471 transitions. [2022-01-18 13:05:38,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-18 13:05:38,102 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.6153846153846154) internal successors, (329), 91 states have internal predecessors, (329), 0 states have call successors, (0), 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 137 [2022-01-18 13:05:38,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:05:38,120 INFO L225 Difference]: With dead ends: 11435 [2022-01-18 13:05:38,120 INFO L226 Difference]: Without dead ends: 11121 [2022-01-18 13:05:38,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 226 SyntacticMatches, 11 SemanticMatches, 154 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 7275 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=2148, Invalid=21117, Unknown=3, NotChecked=912, Total=24180 [2022-01-18 13:05:38,122 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 1712 mSDsluCounter, 8627 mSDsCounter, 0 mSdLazyCounter, 3005 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 8212 SdHoareTripleChecker+Invalid, 5101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2042 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:05:38,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1712 Valid, 8212 Invalid, 5101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3005 Invalid, 0 Unknown, 2042 Unchecked, 1.3s Time] [2022-01-18 13:05:38,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11121 states. [2022-01-18 13:05:38,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11121 to 8445. [2022-01-18 13:05:38,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8445 states, 8444 states have (on average 2.8750592136428232) internal successors, (24277), 8444 states have internal predecessors, (24277), 0 states have call successors, (0), 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 13:05:38,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8445 states to 8445 states and 24277 transitions. [2022-01-18 13:05:38,266 INFO L78 Accepts]: Start accepts. Automaton has 8445 states and 24277 transitions. Word has length 137 [2022-01-18 13:05:38,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:05:38,266 INFO L470 AbstractCegarLoop]: Abstraction has 8445 states and 24277 transitions. [2022-01-18 13:05:38,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.6153846153846154) internal successors, (329), 91 states have internal predecessors, (329), 0 states have call successors, (0), 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 13:05:38,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8445 states and 24277 transitions. [2022-01-18 13:05:38,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-18 13:05:38,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:05:38,274 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:05:38,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 13:05:38,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-01-18 13:05:38,475 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:05:38,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:05:38,475 INFO L85 PathProgramCache]: Analyzing trace with hash 108466710, now seen corresponding path program 27 times [2022-01-18 13:05:38,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:05:38,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693008252] [2022-01-18 13:05:38,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:05:38,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:05:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:05:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:05:39,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:05:39,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693008252] [2022-01-18 13:05:39,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693008252] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:05:39,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391635060] [2022-01-18 13:05:39,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:05:39,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:39,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:05:39,915 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:05:39,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 13:05:40,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 13:05:40,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:05:40,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-18 13:05:40,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:05:41,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:05:41,023 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 13:05:41,244 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 13:05:41,389 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:05:41,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:05:41,785 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:05:41,786 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 82 treesize of output 74 [2022-01-18 13:05:41,788 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 53 treesize of output 47 [2022-01-18 13:05:41,790 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 47 treesize of output 41 [2022-01-18 13:05:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:05:42,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391635060] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:05:42,780 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:05:42,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 22, 22] total 68 [2022-01-18 13:05:42,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770940465] [2022-01-18 13:05:42,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:05:42,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-18 13:05:42,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:05:42,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-18 13:05:42,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=4273, Unknown=2, NotChecked=0, Total=4556 [2022-01-18 13:05:42,782 INFO L87 Difference]: Start difference. First operand 8445 states and 24277 transitions. Second operand has 68 states, 68 states have (on average 4.455882352941177) internal successors, (303), 68 states have internal predecessors, (303), 0 states have call successors, (0), 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 13:05:47,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:05:47,134 INFO L93 Difference]: Finished difference Result 12771 states and 36349 transitions. [2022-01-18 13:05:47,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 13:05:47,135 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.455882352941177) internal successors, (303), 68 states have internal predecessors, (303), 0 states have call successors, (0), 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 137 [2022-01-18 13:05:47,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:05:47,155 INFO L225 Difference]: With dead ends: 12771 [2022-01-18 13:05:47,155 INFO L226 Difference]: Without dead ends: 12377 [2022-01-18 13:05:47,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 249 SyntacticMatches, 5 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4399 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1183, Invalid=14315, Unknown=2, NotChecked=0, Total=15500 [2022-01-18 13:05:47,156 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 1466 mSDsluCounter, 6100 mSDsCounter, 0 mSdLazyCounter, 2742 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 5612 SdHoareTripleChecker+Invalid, 4158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1349 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:05:47,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 5612 Invalid, 4158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2742 Invalid, 0 Unknown, 1349 Unchecked, 1.2s Time] [2022-01-18 13:05:47,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12377 states. [2022-01-18 13:05:47,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12377 to 8206. [2022-01-18 13:05:47,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8206 states, 8205 states have (on average 2.8856794637416208) internal successors, (23677), 8205 states have internal predecessors, (23677), 0 states have call successors, (0), 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 13:05:47,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8206 states to 8206 states and 23677 transitions. [2022-01-18 13:05:47,283 INFO L78 Accepts]: Start accepts. Automaton has 8206 states and 23677 transitions. Word has length 137 [2022-01-18 13:05:47,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:05:47,283 INFO L470 AbstractCegarLoop]: Abstraction has 8206 states and 23677 transitions. [2022-01-18 13:05:47,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.455882352941177) internal successors, (303), 68 states have internal predecessors, (303), 0 states have call successors, (0), 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 13:05:47,283 INFO L276 IsEmpty]: Start isEmpty. Operand 8206 states and 23677 transitions. [2022-01-18 13:05:47,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-18 13:05:47,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:05:47,290 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:05:47,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 13:05:47,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:47,491 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:05:47,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:05:47,491 INFO L85 PathProgramCache]: Analyzing trace with hash -148608930, now seen corresponding path program 28 times [2022-01-18 13:05:47,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:05:47,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328926081] [2022-01-18 13:05:47,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:05:47,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:05:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:05:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:05:48,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:05:48,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328926081] [2022-01-18 13:05:48,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328926081] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:05:48,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394951912] [2022-01-18 13:05:48,909 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:05:48,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:48,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:05:48,910 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:05:48,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 13:05:49,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:05:49,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:05:49,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 70 conjunts are in the unsatisfiable core [2022-01-18 13:05:49,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:05:49,034 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:05:49,294 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:05:49,294 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:05:50,428 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 13:05:50,559 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 25 treesize of output 7 [2022-01-18 13:05:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:05:51,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:05:51,591 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:05:51,591 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 82 treesize of output 74 [2022-01-18 13:05:51,594 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 53 treesize of output 47 [2022-01-18 13:05:51,596 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 47 treesize of output 41 [2022-01-18 13:05:53,843 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 10 treesize of output 8 [2022-01-18 13:05:53,865 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:05:53,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394951912] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:05:53,866 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:05:53,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 94 [2022-01-18 13:05:53,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278452409] [2022-01-18 13:05:53,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:05:53,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-18 13:05:53,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:05:53,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-18 13:05:53,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=665, Invalid=8074, Unknown=3, NotChecked=0, Total=8742 [2022-01-18 13:05:53,868 INFO L87 Difference]: Start difference. First operand 8206 states and 23677 transitions. Second operand has 94 states, 94 states have (on average 3.723404255319149) internal successors, (350), 94 states have internal predecessors, (350), 0 states have call successors, (0), 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 13:05:59,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:05:59,580 INFO L93 Difference]: Finished difference Result 12389 states and 35382 transitions. [2022-01-18 13:05:59,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 13:05:59,580 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 3.723404255319149) internal successors, (350), 94 states have internal predecessors, (350), 0 states have call successors, (0), 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 137 [2022-01-18 13:05:59,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:05:59,599 INFO L225 Difference]: With dead ends: 12389 [2022-01-18 13:05:59,599 INFO L226 Difference]: Without dead ends: 12099 [2022-01-18 13:05:59,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 217 SyntacticMatches, 5 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8379 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2772, Invalid=24278, Unknown=10, NotChecked=0, Total=27060 [2022-01-18 13:05:59,601 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1927 mSDsluCounter, 6165 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 5816 SdHoareTripleChecker+Invalid, 3676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1086 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:05:59,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1927 Valid, 5816 Invalid, 3676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2485 Invalid, 0 Unknown, 1086 Unchecked, 1.0s Time] [2022-01-18 13:05:59,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12099 states. [2022-01-18 13:05:59,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12099 to 8194. [2022-01-18 13:05:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8194 states, 8193 states have (on average 2.8858781886976685) internal successors, (23644), 8193 states have internal predecessors, (23644), 0 states have call successors, (0), 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 13:05:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8194 states to 8194 states and 23644 transitions. [2022-01-18 13:05:59,731 INFO L78 Accepts]: Start accepts. Automaton has 8194 states and 23644 transitions. Word has length 137 [2022-01-18 13:05:59,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:05:59,731 INFO L470 AbstractCegarLoop]: Abstraction has 8194 states and 23644 transitions. [2022-01-18 13:05:59,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.723404255319149) internal successors, (350), 94 states have internal predecessors, (350), 0 states have call successors, (0), 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 13:05:59,732 INFO L276 IsEmpty]: Start isEmpty. Operand 8194 states and 23644 transitions. [2022-01-18 13:05:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-18 13:05:59,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:05:59,738 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:05:59,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 13:05:59,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:59,939 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:05:59,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:05:59,939 INFO L85 PathProgramCache]: Analyzing trace with hash 161397182, now seen corresponding path program 29 times [2022-01-18 13:05:59,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:05:59,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925188590] [2022-01-18 13:05:59,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:05:59,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:05:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:06:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:06:01,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:06:01,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925188590] [2022-01-18 13:06:01,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925188590] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:06:01,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732220244] [2022-01-18 13:06:01,642 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:06:01,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:06:01,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:06:01,643 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:06:01,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 13:06:01,761 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 13:06:01,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:06:01,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-18 13:06:01,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:06:01,789 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:06:01,967 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:06:01,967 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:06:02,553 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 13:06:02,674 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 13:06:02,674 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 13:06:03,015 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:06:03,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:06:03,410 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_1102 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1102) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (forall ((v_ArrVal_1102 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1102) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0))) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0) (< c_~q_front~0 0) (<= c_~q_back~0 c_~q_front~0)) is different from false [2022-01-18 13:06:03,465 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:06:03,466 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 82 treesize of output 74 [2022-01-18 13:06:03,468 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 53 treesize of output 47 [2022-01-18 13:06:03,471 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 47 treesize of output 41 [2022-01-18 13:06:05,066 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 10 treesize of output 8 [2022-01-18 13:06:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:06:05,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732220244] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:06:05,089 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:06:05,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 22, 22] total 71 [2022-01-18 13:06:05,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656411879] [2022-01-18 13:06:05,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:06:05,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-18 13:06:05,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:06:05,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-18 13:06:05,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=4558, Unknown=1, NotChecked=136, Total=4970 [2022-01-18 13:06:05,090 INFO L87 Difference]: Start difference. First operand 8194 states and 23644 transitions. Second operand has 71 states, 71 states have (on average 4.436619718309859) internal successors, (315), 71 states have internal predecessors, (315), 0 states have call successors, (0), 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 13:06:10,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:06:10,190 INFO L93 Difference]: Finished difference Result 12789 states and 36537 transitions. [2022-01-18 13:06:10,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 13:06:10,194 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.436619718309859) internal successors, (315), 71 states have internal predecessors, (315), 0 states have call successors, (0), 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 137 [2022-01-18 13:06:10,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:06:10,215 INFO L225 Difference]: With dead ends: 12789 [2022-01-18 13:06:10,215 INFO L226 Difference]: Without dead ends: 12610 [2022-01-18 13:06:10,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 250 SyntacticMatches, 5 SemanticMatches, 132 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4631 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1662, Invalid=15897, Unknown=1, NotChecked=262, Total=17822 [2022-01-18 13:06:10,217 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 1852 mSDsluCounter, 5681 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 5439 SdHoareTripleChecker+Invalid, 2952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 840 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:06:10,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 5439 Invalid, 2952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2040 Invalid, 0 Unknown, 840 Unchecked, 0.9s Time] [2022-01-18 13:06:10,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12610 states. [2022-01-18 13:06:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12610 to 8186. [2022-01-18 13:06:10,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8186 states, 8185 states have (on average 2.8849114233353697) internal successors, (23613), 8185 states have internal predecessors, (23613), 0 states have call successors, (0), 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 13:06:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8186 states to 8186 states and 23613 transitions. [2022-01-18 13:06:10,354 INFO L78 Accepts]: Start accepts. Automaton has 8186 states and 23613 transitions. Word has length 137 [2022-01-18 13:06:10,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:06:10,355 INFO L470 AbstractCegarLoop]: Abstraction has 8186 states and 23613 transitions. [2022-01-18 13:06:10,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.436619718309859) internal successors, (315), 71 states have internal predecessors, (315), 0 states have call successors, (0), 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 13:06:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 8186 states and 23613 transitions. [2022-01-18 13:06:10,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-18 13:06:10,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:06:10,362 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:06:10,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-01-18 13:06:10,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 13:06:10,562 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:06:10,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:06:10,563 INFO L85 PathProgramCache]: Analyzing trace with hash -878627714, now seen corresponding path program 30 times [2022-01-18 13:06:10,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:06:10,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011645981] [2022-01-18 13:06:10,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:06:10,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:06:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:06:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:06:12,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:06:12,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011645981] [2022-01-18 13:06:12,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011645981] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:06:12,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031893549] [2022-01-18 13:06:12,194 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:06:12,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:06:12,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:06:12,196 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:06:12,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 13:06:12,307 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 13:06:12,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:06:12,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-18 13:06:12,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:06:13,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:06:13,045 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 13:06:13,136 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 13:06:13,483 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:06:13,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:06:14,019 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:06:14,019 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 111 treesize of output 95 [2022-01-18 13:06:14,022 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 67 treesize of output 49 [2022-01-18 13:06:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:06:15,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031893549] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:06:15,091 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:06:15,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 23, 23] total 71 [2022-01-18 13:06:15,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134983545] [2022-01-18 13:06:15,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:06:15,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-18 13:06:15,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:06:15,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-18 13:06:15,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=4678, Unknown=3, NotChecked=0, Total=4970 [2022-01-18 13:06:15,093 INFO L87 Difference]: Start difference. First operand 8186 states and 23613 transitions. Second operand has 71 states, 71 states have (on average 4.295774647887324) internal successors, (305), 71 states have internal predecessors, (305), 0 states have call successors, (0), 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 13:06:21,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:06:21,147 INFO L93 Difference]: Finished difference Result 12735 states and 36293 transitions. [2022-01-18 13:06:21,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 13:06:21,147 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.295774647887324) internal successors, (305), 71 states have internal predecessors, (305), 0 states have call successors, (0), 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 137 [2022-01-18 13:06:21,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:06:21,168 INFO L225 Difference]: With dead ends: 12735 [2022-01-18 13:06:21,168 INFO L226 Difference]: Without dead ends: 12655 [2022-01-18 13:06:21,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 238 SyntacticMatches, 6 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5313 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1636, Invalid=17267, Unknown=3, NotChecked=0, Total=18906 [2022-01-18 13:06:21,170 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 2074 mSDsluCounter, 6221 mSDsCounter, 0 mSdLazyCounter, 3529 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 5905 SdHoareTripleChecker+Invalid, 3764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:06:21,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2074 Valid, 5905 Invalid, 3764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 3529 Invalid, 0 Unknown, 150 Unchecked, 1.5s Time] [2022-01-18 13:06:21,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12655 states. [2022-01-18 13:06:21,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12655 to 8174. [2022-01-18 13:06:21,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8174 states, 8173 states have (on average 2.8862106937477057) internal successors, (23589), 8173 states have internal predecessors, (23589), 0 states have call successors, (0), 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 13:06:21,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8174 states to 8174 states and 23589 transitions. [2022-01-18 13:06:21,350 INFO L78 Accepts]: Start accepts. Automaton has 8174 states and 23589 transitions. Word has length 137 [2022-01-18 13:06:21,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:06:21,350 INFO L470 AbstractCegarLoop]: Abstraction has 8174 states and 23589 transitions. [2022-01-18 13:06:21,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.295774647887324) internal successors, (305), 71 states have internal predecessors, (305), 0 states have call successors, (0), 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 13:06:21,350 INFO L276 IsEmpty]: Start isEmpty. Operand 8174 states and 23589 transitions. [2022-01-18 13:06:21,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 13:06:21,358 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:06:21,358 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:06:21,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-18 13:06:21,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-18 13:06:21,571 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:06:21,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:06:21,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1523455396, now seen corresponding path program 31 times [2022-01-18 13:06:21,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:06:21,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105325726] [2022-01-18 13:06:21,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:06:21,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:06:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:06:23,116 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:06:23,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:06:23,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105325726] [2022-01-18 13:06:23,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105325726] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:06:23,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654888948] [2022-01-18 13:06:23,117 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:06:23,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:06:23,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:06:23,118 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:06:23,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 13:06:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:06:23,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 72 conjunts are in the unsatisfiable core [2022-01-18 13:06:23,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:06:25,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:06:25,605 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 29 treesize of output 29 [2022-01-18 13:06:26,404 INFO L353 Elim1Store]: treesize reduction 84, result has 16.0 percent of original size [2022-01-18 13:06:26,405 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 28 [2022-01-18 13:06:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:06:26,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:06:28,519 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 13:06:28,519 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 198 treesize of output 183 [2022-01-18 13:06:28,527 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 13:06:28,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 68 [2022-01-18 13:06:32,090 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:06:32,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654888948] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:06:32,090 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:06:32,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 108 [2022-01-18 13:06:32,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032490884] [2022-01-18 13:06:32,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:06:32,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-01-18 13:06:32,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:06:32,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-01-18 13:06:32,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=944, Invalid=10590, Unknown=22, NotChecked=0, Total=11556 [2022-01-18 13:06:32,092 INFO L87 Difference]: Start difference. First operand 8174 states and 23589 transitions. Second operand has 108 states, 108 states have (on average 3.25) internal successors, (351), 108 states have internal predecessors, (351), 0 states have call successors, (0), 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 13:06:38,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:06:38,127 INFO L93 Difference]: Finished difference Result 12657 states and 36072 transitions. [2022-01-18 13:06:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 13:06:38,127 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 3.25) internal successors, (351), 108 states have internal predecessors, (351), 0 states have call successors, (0), 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 139 [2022-01-18 13:06:38,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:06:38,153 INFO L225 Difference]: With dead ends: 12657 [2022-01-18 13:06:38,153 INFO L226 Difference]: Without dead ends: 12408 [2022-01-18 13:06:38,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 220 SyntacticMatches, 15 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8442 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=2299, Invalid=23761, Unknown=22, NotChecked=0, Total=26082 [2022-01-18 13:06:38,156 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 2349 mSDsluCounter, 9495 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 8801 SdHoareTripleChecker+Invalid, 4472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2105 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:06:38,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2349 Valid, 8801 Invalid, 4472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2262 Invalid, 0 Unknown, 2105 Unchecked, 1.0s Time] [2022-01-18 13:06:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12408 states. [2022-01-18 13:06:38,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12408 to 8329. [2022-01-18 13:06:38,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8329 states, 8328 states have (on average 2.881844380403458) internal successors, (24000), 8328 states have internal predecessors, (24000), 0 states have call successors, (0), 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 13:06:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8329 states to 8329 states and 24000 transitions. [2022-01-18 13:06:38,329 INFO L78 Accepts]: Start accepts. Automaton has 8329 states and 24000 transitions. Word has length 139 [2022-01-18 13:06:38,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:06:38,329 INFO L470 AbstractCegarLoop]: Abstraction has 8329 states and 24000 transitions. [2022-01-18 13:06:38,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 3.25) internal successors, (351), 108 states have internal predecessors, (351), 0 states have call successors, (0), 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 13:06:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 8329 states and 24000 transitions. [2022-01-18 13:06:38,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 13:06:38,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:06:38,339 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:06:38,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-01-18 13:06:38,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 13:06:38,559 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:06:38,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:06:38,560 INFO L85 PathProgramCache]: Analyzing trace with hash -286390406, now seen corresponding path program 32 times [2022-01-18 13:06:38,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:06:38,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401978424] [2022-01-18 13:06:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:06:38,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:06:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:06:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:06:40,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:06:40,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401978424] [2022-01-18 13:06:40,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401978424] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:06:40,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510981756] [2022-01-18 13:06:40,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:06:40,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:06:40,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:06:40,046 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:06:40,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 13:06:40,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:06:40,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:06:40,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 93 conjunts are in the unsatisfiable core [2022-01-18 13:06:40,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:06:40,760 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:06:40,928 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:06:41,117 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:06:41,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:06:42,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:06:42,453 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 30 treesize of output 30 [2022-01-18 13:06:42,888 INFO L353 Elim1Store]: treesize reduction 37, result has 27.5 percent of original size [2022-01-18 13:06:42,889 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 27 [2022-01-18 13:06:43,323 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:06:43,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:06:56,205 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-01-18 13:06:56,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 314 treesize of output 156 [2022-01-18 13:06:56,238 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 13:06:56,239 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 347 treesize of output 342 [2022-01-18 13:06:56,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 13:06:56,247 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 181 [2022-01-18 13:06:56,280 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 13:06:56,280 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 209 treesize of output 218 [2022-01-18 13:06:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:06:58,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510981756] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:06:58,935 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:06:58,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 43] total 114 [2022-01-18 13:06:58,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886899417] [2022-01-18 13:06:58,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:06:58,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-01-18 13:06:58,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:06:58,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-01-18 13:06:58,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=671, Invalid=12166, Unknown=45, NotChecked=0, Total=12882 [2022-01-18 13:06:58,936 INFO L87 Difference]: Start difference. First operand 8329 states and 24000 transitions. Second operand has 114 states, 114 states have (on average 3.192982456140351) internal successors, (364), 114 states have internal predecessors, (364), 0 states have call successors, (0), 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 13:07:15,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:07:15,702 INFO L93 Difference]: Finished difference Result 10315 states and 28963 transitions. [2022-01-18 13:07:15,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 13:07:15,703 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 3.192982456140351) internal successors, (364), 114 states have internal predecessors, (364), 0 states have call successors, (0), 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 139 [2022-01-18 13:07:15,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:07:15,716 INFO L225 Difference]: With dead ends: 10315 [2022-01-18 13:07:15,716 INFO L226 Difference]: Without dead ends: 9803 [2022-01-18 13:07:15,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 231 SyntacticMatches, 41 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15646 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=3228, Invalid=35728, Unknown=50, NotChecked=0, Total=39006 [2022-01-18 13:07:15,718 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 4349 mSDsluCounter, 14743 mSDsCounter, 0 mSdLazyCounter, 6078 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4349 SdHoareTripleChecker+Valid, 13480 SdHoareTripleChecker+Invalid, 10638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 6078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4295 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:07:15,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4349 Valid, 13480 Invalid, 10638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 6078 Invalid, 0 Unknown, 4295 Unchecked, 2.7s Time] [2022-01-18 13:07:15,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9803 states. [2022-01-18 13:07:15,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9803 to 8282. [2022-01-18 13:07:15,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8282 states, 8281 states have (on average 2.8768264702330635) internal successors, (23823), 8281 states have internal predecessors, (23823), 0 states have call successors, (0), 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 13:07:15,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8282 states to 8282 states and 23823 transitions. [2022-01-18 13:07:15,858 INFO L78 Accepts]: Start accepts. Automaton has 8282 states and 23823 transitions. Word has length 139 [2022-01-18 13:07:15,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:07:15,858 INFO L470 AbstractCegarLoop]: Abstraction has 8282 states and 23823 transitions. [2022-01-18 13:07:15,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 3.192982456140351) internal successors, (364), 114 states have internal predecessors, (364), 0 states have call successors, (0), 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 13:07:15,858 INFO L276 IsEmpty]: Start isEmpty. Operand 8282 states and 23823 transitions. [2022-01-18 13:07:15,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 13:07:15,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:07:15,865 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:07:15,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 13:07:16,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 13:07:16,067 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:07:16,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:07:16,067 INFO L85 PathProgramCache]: Analyzing trace with hash -774168868, now seen corresponding path program 33 times [2022-01-18 13:07:16,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:07:16,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002874482] [2022-01-18 13:07:16,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:07:16,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:07:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:07:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:07:18,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:07:18,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002874482] [2022-01-18 13:07:18,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002874482] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:07:18,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345027561] [2022-01-18 13:07:18,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:07:18,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:07:18,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:07:18,204 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:07:18,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 13:07:18,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:07:18,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:07:18,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 13:07:18,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:07:19,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:07:19,762 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 29 treesize of output 29 [2022-01-18 13:07:20,499 INFO L353 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2022-01-18 13:07:20,499 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 25 [2022-01-18 13:07:20,810 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 13:07:20,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:07:22,703 INFO L353 Elim1Store]: treesize reduction 60, result has 38.1 percent of original size [2022-01-18 13:07:22,703 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 134 treesize of output 122 [2022-01-18 13:07:22,710 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-18 13:07:22,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 65 [2022-01-18 13:07:22,716 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-18 13:07:22,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 53 [2022-01-18 13:07:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 13:07:24,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345027561] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:07:24,114 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:07:24,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 29, 29] total 91 [2022-01-18 13:07:24,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363565048] [2022-01-18 13:07:24,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:07:24,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-18 13:07:24,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:07:24,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-18 13:07:24,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=812, Invalid=7371, Unknown=7, NotChecked=0, Total=8190 [2022-01-18 13:07:24,116 INFO L87 Difference]: Start difference. First operand 8282 states and 23823 transitions. Second operand has 91 states, 91 states have (on average 3.6923076923076925) internal successors, (336), 91 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:07:56,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:07:56,174 INFO L93 Difference]: Finished difference Result 18201 states and 50982 transitions. [2022-01-18 13:07:56,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2022-01-18 13:07:56,174 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.6923076923076925) internal successors, (336), 91 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-01-18 13:07:56,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:07:56,199 INFO L225 Difference]: With dead ends: 18201 [2022-01-18 13:07:56,199 INFO L226 Difference]: Without dead ends: 17335 [2022-01-18 13:07:56,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 268 SyntacticMatches, 16 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27636 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=5511, Invalid=73155, Unknown=14, NotChecked=0, Total=78680 [2022-01-18 13:07:56,202 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 3902 mSDsluCounter, 12409 mSDsCounter, 0 mSdLazyCounter, 4767 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3902 SdHoareTripleChecker+Valid, 11881 SdHoareTripleChecker+Invalid, 11151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 4767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5929 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:07:56,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3902 Valid, 11881 Invalid, 11151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 4767 Invalid, 0 Unknown, 5929 Unchecked, 2.6s Time] [2022-01-18 13:07:56,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17335 states. [2022-01-18 13:07:56,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17335 to 12417. [2022-01-18 13:07:56,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12417 states, 12416 states have (on average 2.8891752577319587) internal successors, (35872), 12416 states have internal predecessors, (35872), 0 states have call successors, (0), 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 13:07:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12417 states to 12417 states and 35872 transitions. [2022-01-18 13:07:56,382 INFO L78 Accepts]: Start accepts. Automaton has 12417 states and 35872 transitions. Word has length 139 [2022-01-18 13:07:56,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:07:56,382 INFO L470 AbstractCegarLoop]: Abstraction has 12417 states and 35872 transitions. [2022-01-18 13:07:56,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.6923076923076925) internal successors, (336), 91 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:07:56,382 INFO L276 IsEmpty]: Start isEmpty. Operand 12417 states and 35872 transitions. [2022-01-18 13:07:56,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 13:07:56,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:07:56,391 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:07:56,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-01-18 13:07:56,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:07:56,592 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:07:56,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:07:56,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1928290016, now seen corresponding path program 34 times [2022-01-18 13:07:56,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:07:56,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553817218] [2022-01-18 13:07:56,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:07:56,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:07:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:07:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:07:58,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:07:58,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553817218] [2022-01-18 13:07:58,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553817218] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:07:58,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58496698] [2022-01-18 13:07:58,253 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:07:58,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:07:58,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:07:58,254 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:07:58,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 13:07:58,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:07:58,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:07:58,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 86 conjunts are in the unsatisfiable core [2022-01-18 13:07:58,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:07:58,424 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:07:58,803 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:07:58,803 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:07:59,169 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:07:59,359 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:07:59,823 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:08:00,807 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 29 treesize of output 29 [2022-01-18 13:08:01,527 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-18 13:08:01,528 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 16 [2022-01-18 13:08:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:08:01,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:08:15,511 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-18 13:08:15,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 289 treesize of output 170 [2022-01-18 13:08:15,582 INFO L353 Elim1Store]: treesize reduction 62, result has 62.4 percent of original size [2022-01-18 13:08:15,582 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 445 treesize of output 472 [2022-01-18 13:08:15,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 13:08:15,592 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 309 treesize of output 231 [2022-01-18 13:08:15,632 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 13:08:15,632 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 237 treesize of output 238 [2022-01-18 13:08:24,287 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 10 treesize of output 8 [2022-01-18 13:08:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:08:24,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58496698] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:08:24,311 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:08:24,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 42, 43] total 115 [2022-01-18 13:08:24,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627052593] [2022-01-18 13:08:24,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:08:24,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-01-18 13:08:24,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:08:24,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-01-18 13:08:24,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1011, Invalid=12050, Unknown=49, NotChecked=0, Total=13110 [2022-01-18 13:08:24,313 INFO L87 Difference]: Start difference. First operand 12417 states and 35872 transitions. Second operand has 115 states, 115 states have (on average 3.1652173913043478) internal successors, (364), 115 states have internal predecessors, (364), 0 states have call successors, (0), 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 13:08:30,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:08:30,614 INFO L93 Difference]: Finished difference Result 13888 states and 39651 transitions. [2022-01-18 13:08:30,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 13:08:30,615 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 3.1652173913043478) internal successors, (364), 115 states have internal predecessors, (364), 0 states have call successors, (0), 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 139 [2022-01-18 13:08:30,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:08:30,635 INFO L225 Difference]: With dead ends: 13888 [2022-01-18 13:08:30,635 INFO L226 Difference]: Without dead ends: 13724 [2022-01-18 13:08:30,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 224 SyntacticMatches, 16 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9129 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=2236, Invalid=25093, Unknown=61, NotChecked=0, Total=27390 [2022-01-18 13:08:30,638 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 2002 mSDsluCounter, 8703 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2002 SdHoareTripleChecker+Valid, 8365 SdHoareTripleChecker+Invalid, 4016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2190 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:08:30,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2002 Valid, 8365 Invalid, 4016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1762 Invalid, 0 Unknown, 2190 Unchecked, 0.8s Time] [2022-01-18 13:08:30,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13724 states. [2022-01-18 13:08:30,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13724 to 12466. [2022-01-18 13:08:30,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12466 states, 12465 states have (on average 2.8876052948255113) internal successors, (35994), 12465 states have internal predecessors, (35994), 0 states have call successors, (0), 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 13:08:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12466 states to 12466 states and 35994 transitions. [2022-01-18 13:08:30,843 INFO L78 Accepts]: Start accepts. Automaton has 12466 states and 35994 transitions. Word has length 139 [2022-01-18 13:08:30,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:08:30,843 INFO L470 AbstractCegarLoop]: Abstraction has 12466 states and 35994 transitions. [2022-01-18 13:08:30,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 3.1652173913043478) internal successors, (364), 115 states have internal predecessors, (364), 0 states have call successors, (0), 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 13:08:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 12466 states and 35994 transitions. [2022-01-18 13:08:30,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 13:08:30,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:08:30,853 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:08:30,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-18 13:08:31,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-01-18 13:08:31,053 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:08:31,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:08:31,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2011659514, now seen corresponding path program 35 times [2022-01-18 13:08:31,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:08:31,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751422699] [2022-01-18 13:08:31,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:08:31,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:08:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:08:32,841 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:08:32,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:08:32,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751422699] [2022-01-18 13:08:32,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751422699] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:08:32,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521174412] [2022-01-18 13:08:32,841 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:08:32,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:08:32,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:08:32,843 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:08:32,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 13:08:32,961 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 13:08:32,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:08:32,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 86 conjunts are in the unsatisfiable core [2022-01-18 13:08:32,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:08:32,990 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:08:33,238 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:08:33,239 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:08:35,075 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 29 treesize of output 29 [2022-01-18 13:08:35,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:08:35,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:08:35,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 13:08:35,739 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:08:35,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 16 [2022-01-18 13:08:35,968 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:08:35,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:08:36,463 WARN L838 $PredicateComparison]: unable to prove that (or (<= c_~n~0 c_~q_back~0) (< c_~q_front~0 0) (and (forall ((v_ArrVal_1318 (Array Int Int))) (<= c_~N~0 (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1318) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))))) (forall ((v_ArrVal_1318 (Array Int Int))) (<= (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1318) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset)))) c_~N~0))) (<= c_~q_back~0 c_~q_front~0)) is different from false [2022-01-18 13:08:36,521 WARN L838 $PredicateComparison]: unable to prove that (or (< |c_thread1Thread1of1ForFork1_~i~0#1| c_~N~0) (<= c_~n~0 c_~q_back~0) (< c_~q_front~0 0) (and (forall ((v_ArrVal_1318 (Array Int Int))) (<= c_~N~0 (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1318) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))))) (forall ((v_ArrVal_1318 (Array Int Int))) (<= (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1318) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset)))) c_~N~0))) (<= c_~q_back~0 c_~q_front~0)) is different from false [2022-01-18 13:08:36,550 WARN L838 $PredicateComparison]: unable to prove that (or (< (+ |c_thread1Thread1of1ForFork1_#t~post1#1| 1) c_~N~0) (<= c_~n~0 c_~q_back~0) (< c_~q_front~0 0) (and (forall ((v_ArrVal_1318 (Array Int Int))) (<= c_~N~0 (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1318) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))))) (forall ((v_ArrVal_1318 (Array Int Int))) (<= (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1318) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset)))) c_~N~0))) (<= c_~q_back~0 c_~q_front~0)) is different from false [2022-01-18 13:08:36,566 WARN L838 $PredicateComparison]: unable to prove that (or (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0) (<= c_~n~0 c_~q_back~0) (< c_~q_front~0 0) (and (forall ((v_ArrVal_1318 (Array Int Int))) (<= c_~N~0 (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1318) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))))) (forall ((v_ArrVal_1318 (Array Int Int))) (<= (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1318) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset)))) c_~N~0))) (<= c_~q_back~0 c_~q_front~0)) is different from false [2022-01-18 13:08:37,030 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 13:08:37,031 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 138 treesize of output 140 [2022-01-18 13:08:37,038 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 13:08:37,038 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 66 [2022-01-18 13:08:37,043 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 13:08:37,044 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 53 [2022-01-18 13:08:40,828 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 10 treesize of output 8 [2022-01-18 13:08:40,852 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-01-18 13:08:40,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521174412] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:08:40,852 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:08:40,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 38, 38] total 104 [2022-01-18 13:08:40,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7439312] [2022-01-18 13:08:40,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:08:40,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-01-18 13:08:40,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:08:40,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-01-18 13:08:40,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=9143, Unknown=9, NotChecked=796, Total=10712 [2022-01-18 13:08:40,854 INFO L87 Difference]: Start difference. First operand 12466 states and 35994 transitions. Second operand has 104 states, 104 states have (on average 3.375) internal successors, (351), 104 states have internal predecessors, (351), 0 states have call successors, (0), 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 13:08:50,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:08:50,018 INFO L93 Difference]: Finished difference Result 15463 states and 43963 transitions. [2022-01-18 13:08:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 13:08:50,018 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.375) internal successors, (351), 104 states have internal predecessors, (351), 0 states have call successors, (0), 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 139 [2022-01-18 13:08:50,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:08:50,041 INFO L225 Difference]: With dead ends: 15463 [2022-01-18 13:08:50,041 INFO L226 Difference]: Without dead ends: 15425 [2022-01-18 13:08:50,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 221 SyntacticMatches, 33 SemanticMatches, 172 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 10706 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=2462, Invalid=26275, Unknown=9, NotChecked=1356, Total=30102 [2022-01-18 13:08:50,043 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 2735 mSDsluCounter, 10348 mSDsCounter, 0 mSdLazyCounter, 4256 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 9552 SdHoareTripleChecker+Invalid, 7992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 4256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3566 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:08:50,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 9552 Invalid, 7992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 4256 Invalid, 0 Unknown, 3566 Unchecked, 1.9s Time] [2022-01-18 13:08:50,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15425 states. [2022-01-18 13:08:50,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15425 to 12753. [2022-01-18 13:08:50,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12753 states, 12752 states have (on average 2.8844102885821834) internal successors, (36782), 12752 states have internal predecessors, (36782), 0 states have call successors, (0), 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 13:08:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12753 states to 12753 states and 36782 transitions. [2022-01-18 13:08:50,230 INFO L78 Accepts]: Start accepts. Automaton has 12753 states and 36782 transitions. Word has length 139 [2022-01-18 13:08:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:08:50,230 INFO L470 AbstractCegarLoop]: Abstraction has 12753 states and 36782 transitions. [2022-01-18 13:08:50,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.375) internal successors, (351), 104 states have internal predecessors, (351), 0 states have call successors, (0), 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 13:08:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 12753 states and 36782 transitions. [2022-01-18 13:08:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 13:08:50,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:08:50,241 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:08:50,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 13:08:50,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-01-18 13:08:50,442 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:08:50,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:08:50,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1217538124, now seen corresponding path program 36 times [2022-01-18 13:08:50,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:08:50,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131138245] [2022-01-18 13:08:50,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:08:50,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:08:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:08:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:08:51,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:08:51,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131138245] [2022-01-18 13:08:51,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131138245] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:08:51,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035166644] [2022-01-18 13:08:51,929 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:08:51,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:08:51,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:08:51,930 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:08:51,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 13:08:52,080 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 13:08:52,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:08:52,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 77 conjunts are in the unsatisfiable core [2022-01-18 13:08:52,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:08:54,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:08:54,384 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 30 treesize of output 30 [2022-01-18 13:08:55,376 INFO L353 Elim1Store]: treesize reduction 84, result has 16.0 percent of original size [2022-01-18 13:08:55,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 28 [2022-01-18 13:08:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:08:55,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:08:58,372 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 13:08:58,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 156 treesize of output 151 [2022-01-18 13:08:58,381 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-18 13:08:58,381 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 53 [2022-01-18 13:09:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:09:02,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035166644] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:09:02,960 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:09:02,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 39, 40] total 107 [2022-01-18 13:09:02,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510448068] [2022-01-18 13:09:02,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:09:02,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-01-18 13:09:02,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:09:02,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-01-18 13:09:02,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=618, Invalid=10722, Unknown=2, NotChecked=0, Total=11342 [2022-01-18 13:09:02,961 INFO L87 Difference]: Start difference. First operand 12753 states and 36782 transitions. Second operand has 107 states, 107 states have (on average 3.2803738317757007) internal successors, (351), 107 states have internal predecessors, (351), 0 states have call successors, (0), 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 13:09:11,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:09:11,203 INFO L93 Difference]: Finished difference Result 14694 states and 41635 transitions. [2022-01-18 13:09:11,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 13:09:11,203 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 3.2803738317757007) internal successors, (351), 107 states have internal predecessors, (351), 0 states have call successors, (0), 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 139 [2022-01-18 13:09:11,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:09:11,224 INFO L225 Difference]: With dead ends: 14694 [2022-01-18 13:09:11,225 INFO L226 Difference]: Without dead ends: 14667 [2022-01-18 13:09:11,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 232 SyntacticMatches, 12 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9318 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=2206, Invalid=25848, Unknown=2, NotChecked=0, Total=28056 [2022-01-18 13:09:11,226 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 2557 mSDsluCounter, 12512 mSDsCounter, 0 mSdLazyCounter, 3769 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2557 SdHoareTripleChecker+Valid, 12144 SdHoareTripleChecker+Invalid, 5333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 3769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1378 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:09:11,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2557 Valid, 12144 Invalid, 5333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 3769 Invalid, 0 Unknown, 1378 Unchecked, 1.7s Time] [2022-01-18 13:09:11,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14667 states. [2022-01-18 13:09:11,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14667 to 12956. [2022-01-18 13:09:11,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12956 states, 12955 states have (on average 2.880509455808568) internal successors, (37317), 12955 states have internal predecessors, (37317), 0 states have call successors, (0), 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 13:09:11,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12956 states to 12956 states and 37317 transitions. [2022-01-18 13:09:11,400 INFO L78 Accepts]: Start accepts. Automaton has 12956 states and 37317 transitions. Word has length 139 [2022-01-18 13:09:11,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:09:11,401 INFO L470 AbstractCegarLoop]: Abstraction has 12956 states and 37317 transitions. [2022-01-18 13:09:11,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 3.2803738317757007) internal successors, (351), 107 states have internal predecessors, (351), 0 states have call successors, (0), 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 13:09:11,401 INFO L276 IsEmpty]: Start isEmpty. Operand 12956 states and 37317 transitions. [2022-01-18 13:09:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 13:09:11,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:09:11,411 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:09:11,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-18 13:09:11,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-01-18 13:09:11,612 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:09:11,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:09:11,612 INFO L85 PathProgramCache]: Analyzing trace with hash 308802818, now seen corresponding path program 37 times [2022-01-18 13:09:11,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:09:11,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757735153] [2022-01-18 13:09:11,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:09:11,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:09:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:09:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:09:13,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:09:13,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757735153] [2022-01-18 13:09:13,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757735153] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:09:13,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431011330] [2022-01-18 13:09:13,132 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:09:13,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:09:13,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:09:13,133 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:09:13,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 13:09:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:09:13,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 84 conjunts are in the unsatisfiable core [2022-01-18 13:09:13,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:09:15,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:09:15,419 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 30 treesize of output 30 [2022-01-18 13:09:16,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:09:16,028 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:09:16,028 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 13 [2022-01-18 13:09:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:09:16,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:09:17,882 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 13:09:17,882 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 199 treesize of output 183 [2022-01-18 13:09:17,889 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 13:09:17,889 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 68 [2022-01-18 13:09:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:09:20,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431011330] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:09:20,236 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:09:20,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 110 [2022-01-18 13:09:20,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303824168] [2022-01-18 13:09:20,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:09:20,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-01-18 13:09:20,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:09:20,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-01-18 13:09:20,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=11021, Unknown=21, NotChecked=0, Total=11990 [2022-01-18 13:09:20,238 INFO L87 Difference]: Start difference. First operand 12956 states and 37317 transitions. Second operand has 110 states, 110 states have (on average 3.3) internal successors, (363), 110 states have internal predecessors, (363), 0 states have call successors, (0), 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 13:09:32,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:09:32,702 INFO L93 Difference]: Finished difference Result 18975 states and 54293 transitions. [2022-01-18 13:09:32,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-18 13:09:32,703 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 3.3) internal successors, (363), 110 states have internal predecessors, (363), 0 states have call successors, (0), 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 139 [2022-01-18 13:09:32,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:09:32,735 INFO L225 Difference]: With dead ends: 18975 [2022-01-18 13:09:32,736 INFO L226 Difference]: Without dead ends: 18260 [2022-01-18 13:09:32,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 221 SyntacticMatches, 6 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15019 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=3978, Invalid=39868, Unknown=44, NotChecked=0, Total=43890 [2022-01-18 13:09:32,738 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 4367 mSDsluCounter, 12499 mSDsCounter, 0 mSdLazyCounter, 5782 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4367 SdHoareTripleChecker+Valid, 11446 SdHoareTripleChecker+Invalid, 9619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 5782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3358 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:09:32,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4367 Valid, 11446 Invalid, 9619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 5782 Invalid, 0 Unknown, 3358 Unchecked, 2.6s Time] [2022-01-18 13:09:32,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18260 states. [2022-01-18 13:09:32,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18260 to 12422. [2022-01-18 13:09:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12422 states, 12421 states have (on average 2.8879317285242734) internal successors, (35871), 12421 states have internal predecessors, (35871), 0 states have call successors, (0), 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 13:09:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12422 states to 12422 states and 35871 transitions. [2022-01-18 13:09:32,932 INFO L78 Accepts]: Start accepts. Automaton has 12422 states and 35871 transitions. Word has length 139 [2022-01-18 13:09:32,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:09:32,932 INFO L470 AbstractCegarLoop]: Abstraction has 12422 states and 35871 transitions. [2022-01-18 13:09:32,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 3.3) internal successors, (363), 110 states have internal predecessors, (363), 0 states have call successors, (0), 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 13:09:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 12422 states and 35871 transitions. [2022-01-18 13:09:32,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 13:09:32,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:09:32,942 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:09:32,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-18 13:09:33,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:09:33,142 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:09:33,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:09:33,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1566198338, now seen corresponding path program 38 times [2022-01-18 13:09:33,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:09:33,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954120061] [2022-01-18 13:09:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:09:33,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:09:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:09:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:09:35,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:09:35,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954120061] [2022-01-18 13:09:35,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954120061] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:09:35,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992299434] [2022-01-18 13:09:35,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:09:35,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:09:35,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:09:35,299 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:09:35,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 13:09:35,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:09:35,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:09:35,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 96 conjunts are in the unsatisfiable core [2022-01-18 13:09:35,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:09:36,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:09:36,243 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:09:36,423 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:09:36,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:09:37,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:09:37,991 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 29 treesize of output 29 [2022-01-18 13:09:38,931 INFO L353 Elim1Store]: treesize reduction 96, result has 6.8 percent of original size [2022-01-18 13:09:38,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 19 [2022-01-18 13:09:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:09:39,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:09:51,498 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-01-18 13:09:51,498 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 270 treesize of output 140 [2022-01-18 13:09:51,655 INFO L353 Elim1Store]: treesize reduction 142, result has 60.0 percent of original size [2022-01-18 13:09:51,655 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 444 treesize of output 563 [2022-01-18 13:09:51,702 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 13:09:51,702 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 563 treesize of output 564 [2022-01-18 13:09:51,737 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 13:09:51,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 251 treesize of output 199 [2022-01-18 13:09:51,773 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 13:09:51,773 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 199 treesize of output 173 [2022-01-18 13:10:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:10:37,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992299434] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:10:37,004 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:10:37,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 41, 43] total 115 [2022-01-18 13:10:37,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534121148] [2022-01-18 13:10:37,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:10:37,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-01-18 13:10:37,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:10:37,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-01-18 13:10:37,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1080, Invalid=11920, Unknown=110, NotChecked=0, Total=13110 [2022-01-18 13:10:37,006 INFO L87 Difference]: Start difference. First operand 12422 states and 35871 transitions. Second operand has 115 states, 115 states have (on average 3.1652173913043478) internal successors, (364), 115 states have internal predecessors, (364), 0 states have call successors, (0), 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 13:10:47,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:10:47,066 INFO L93 Difference]: Finished difference Result 18184 states and 51863 transitions. [2022-01-18 13:10:47,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 13:10:47,067 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 3.1652173913043478) internal successors, (364), 115 states have internal predecessors, (364), 0 states have call successors, (0), 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 139 [2022-01-18 13:10:47,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:10:47,095 INFO L225 Difference]: With dead ends: 18184 [2022-01-18 13:10:47,095 INFO L226 Difference]: Without dead ends: 18133 [2022-01-18 13:10:47,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 232 SyntacticMatches, 14 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9205 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=3224, Invalid=28163, Unknown=119, NotChecked=0, Total=31506 [2022-01-18 13:10:47,097 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 2738 mSDsluCounter, 9352 mSDsCounter, 0 mSdLazyCounter, 2445 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2738 SdHoareTripleChecker+Valid, 8987 SdHoareTripleChecker+Invalid, 4591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1967 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:10:47,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2738 Valid, 8987 Invalid, 4591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2445 Invalid, 0 Unknown, 1967 Unchecked, 1.3s Time] [2022-01-18 13:10:47,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18133 states. [2022-01-18 13:10:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18133 to 12601. [2022-01-18 13:10:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12601 states, 12600 states have (on average 2.8837301587301587) internal successors, (36335), 12600 states have internal predecessors, (36335), 0 states have call successors, (0), 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 13:10:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12601 states to 12601 states and 36335 transitions. [2022-01-18 13:10:47,288 INFO L78 Accepts]: Start accepts. Automaton has 12601 states and 36335 transitions. Word has length 139 [2022-01-18 13:10:47,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:10:47,288 INFO L470 AbstractCegarLoop]: Abstraction has 12601 states and 36335 transitions. [2022-01-18 13:10:47,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 3.1652173913043478) internal successors, (364), 115 states have internal predecessors, (364), 0 states have call successors, (0), 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 13:10:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 12601 states and 36335 transitions. [2022-01-18 13:10:47,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 13:10:47,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:10:47,297 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:10:47,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 13:10:47,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:10:47,499 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:10:47,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:10:47,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1164899590, now seen corresponding path program 39 times [2022-01-18 13:10:47,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:10:47,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130168116] [2022-01-18 13:10:47,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:10:47,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:10:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:10:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:10:49,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:10:49,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130168116] [2022-01-18 13:10:49,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130168116] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:10:49,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332672487] [2022-01-18 13:10:49,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:10:49,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:10:49,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:10:49,731 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:10:49,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 13:10:49,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:10:49,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:10:49,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 13:10:49,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:10:51,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:10:51,338 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 29 treesize of output 29 [2022-01-18 13:10:52,026 INFO L353 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2022-01-18 13:10:52,027 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 29 [2022-01-18 13:10:52,350 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 13:10:52,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:10:54,422 INFO L353 Elim1Store]: treesize reduction 60, result has 38.1 percent of original size [2022-01-18 13:10:54,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 134 treesize of output 122 [2022-01-18 13:10:54,430 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-18 13:10:54,430 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 65 [2022-01-18 13:10:54,436 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-18 13:10:54,436 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 53 [2022-01-18 13:10:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 13:10:55,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332672487] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:10:55,972 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:10:55,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 29, 29] total 92 [2022-01-18 13:10:55,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965641695] [2022-01-18 13:10:55,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:10:55,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-01-18 13:10:55,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:10:55,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-01-18 13:10:55,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=7768, Unknown=5, NotChecked=0, Total=8372 [2022-01-18 13:10:55,974 INFO L87 Difference]: Start difference. First operand 12601 states and 36335 transitions. Second operand has 92 states, 92 states have (on average 3.652173913043478) internal successors, (336), 92 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:11:08,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:11:08,977 INFO L93 Difference]: Finished difference Result 14980 states and 42218 transitions. [2022-01-18 13:11:08,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-18 13:11:08,977 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 3.652173913043478) internal successors, (336), 92 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-01-18 13:11:08,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:11:08,998 INFO L225 Difference]: With dead ends: 14980 [2022-01-18 13:11:08,999 INFO L226 Difference]: Without dead ends: 14910 [2022-01-18 13:11:09,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 258 SyntacticMatches, 7 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8339 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=2590, Invalid=26813, Unknown=9, NotChecked=0, Total=29412 [2022-01-18 13:11:09,000 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 2789 mSDsluCounter, 10337 mSDsCounter, 0 mSdLazyCounter, 2640 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2789 SdHoareTripleChecker+Valid, 9794 SdHoareTripleChecker+Invalid, 5007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2287 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:11:09,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2789 Valid, 9794 Invalid, 5007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2640 Invalid, 0 Unknown, 2287 Unchecked, 1.4s Time] [2022-01-18 13:11:09,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14910 states. [2022-01-18 13:11:09,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14910 to 13020. [2022-01-18 13:11:09,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13020 states, 13019 states have (on average 2.8757201013902756) internal successors, (37439), 13019 states have internal predecessors, (37439), 0 states have call successors, (0), 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 13:11:09,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13020 states to 13020 states and 37439 transitions. [2022-01-18 13:11:09,185 INFO L78 Accepts]: Start accepts. Automaton has 13020 states and 37439 transitions. Word has length 139 [2022-01-18 13:11:09,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:11:09,185 INFO L470 AbstractCegarLoop]: Abstraction has 13020 states and 37439 transitions. [2022-01-18 13:11:09,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 3.652173913043478) internal successors, (336), 92 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:11:09,186 INFO L276 IsEmpty]: Start isEmpty. Operand 13020 states and 37439 transitions. [2022-01-18 13:11:09,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 13:11:09,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:11:09,196 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 13:11:09,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-01-18 13:11:09,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-18 13:11:09,396 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:11:09,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:11:09,397 INFO L85 PathProgramCache]: Analyzing trace with hash 370778200, now seen corresponding path program 40 times [2022-01-18 13:11:09,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:11:09,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603736046] [2022-01-18 13:11:09,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:11:09,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:11:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:11:11,761 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:11:11,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:11:11,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603736046] [2022-01-18 13:11:11,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603736046] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:11:11,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552075780] [2022-01-18 13:11:11,762 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:11:11,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:11:11,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:11:11,763 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:11:11,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 13:11:11,876 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:11:11,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:11:11,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 94 conjunts are in the unsatisfiable core [2022-01-18 13:11:11,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:11:12,473 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:11:12,684 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:11:12,940 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:11:13,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:11:14,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:11:14,709 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 29 treesize of output 29 [2022-01-18 13:11:15,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:11:15,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 13:11:15,522 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:11:15,522 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 16 [2022-01-18 13:11:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:11:15,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:11:31,842 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-01-18 13:11:31,842 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 315 treesize of output 157 [2022-01-18 13:11:31,881 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 13:11:31,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 671 treesize of output 623 [2022-01-18 13:11:31,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 13:11:31,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 523 treesize of output 395 [2022-01-18 13:11:31,930 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 13:11:31,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 443 treesize of output 419 [2022-01-18 13:11:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:11:35,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552075780] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:11:35,643 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:11:35,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 41, 43] total 114 [2022-01-18 13:11:35,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416775892] [2022-01-18 13:11:35,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:11:35,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-01-18 13:11:35,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:11:35,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-01-18 13:11:35,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=937, Invalid=11894, Unknown=51, NotChecked=0, Total=12882 [2022-01-18 13:11:35,645 INFO L87 Difference]: Start difference. First operand 13020 states and 37439 transitions. Second operand has 114 states, 114 states have (on average 3.087719298245614) internal successors, (352), 114 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-01-18 13:11:36,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 13:11:36,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 200 SyntacticMatches, 9 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5543 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=991, Invalid=13238, Unknown=51, NotChecked=0, Total=14280 [2022-01-18 13:11:36,249 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 103 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 367 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:11:36,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 1545 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 305 Invalid, 0 Unknown, 367 Unchecked, 0.1s Time] [2022-01-18 13:11:36,250 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 13:11:36,258 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 13:11:36,265 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 13:11:36,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-01-18 13:11:36,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-01-18 13:11:36,450 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (13020states) and FLOYD_HOARE automaton (currently 12 states, 114 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 120 known predicates. [2022-01-18 13:11:36,452 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 13:11:36,452 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 13:11:36,454 INFO L732 BasicCegarLoop]: Path program histogram: [40, 3, 2, 1, 1, 1] [2022-01-18 13:11:36,455 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 13:11:36,455 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 13:11:36,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 01:11:36 BasicIcfg [2022-01-18 13:11:36,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 13:11:36,457 INFO L158 Benchmark]: Toolchain (without parser) took 719399.73ms. Allocated memory was 369.1MB in the beginning and 1.2GB in the end (delta: 859.8MB). Free memory was 316.0MB in the beginning and 362.1MB in the end (delta: -46.0MB). Peak memory consumption was 816.9MB. Max. memory is 16.0GB. [2022-01-18 13:11:36,457 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 369.1MB. Free memory is still 333.0MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 13:11:36,457 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.64ms. Allocated memory was 369.1MB in the beginning and 490.7MB in the end (delta: 121.6MB). Free memory was 315.8MB in the beginning and 464.4MB in the end (delta: -148.6MB). Peak memory consumption was 8.8MB. Max. memory is 16.0GB. [2022-01-18 13:11:36,457 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.09ms. Allocated memory is still 490.7MB. Free memory was 464.4MB in the beginning and 462.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 13:11:36,457 INFO L158 Benchmark]: Boogie Preprocessor took 32.97ms. Allocated memory is still 490.7MB. Free memory was 462.3MB in the beginning and 461.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 13:11:36,457 INFO L158 Benchmark]: RCFGBuilder took 469.63ms. Allocated memory is still 490.7MB. Free memory was 461.2MB in the beginning and 437.1MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2022-01-18 13:11:36,457 INFO L158 Benchmark]: TraceAbstraction took 718611.27ms. Allocated memory was 490.7MB in the beginning and 1.2GB in the end (delta: 738.2MB). Free memory was 437.1MB in the beginning and 362.1MB in the end (delta: 75.0MB). Peak memory consumption was 815.3MB. Max. memory is 16.0GB. [2022-01-18 13:11:36,457 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 369.1MB. Free memory is still 333.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 245.64ms. Allocated memory was 369.1MB in the beginning and 490.7MB in the end (delta: 121.6MB). Free memory was 315.8MB in the beginning and 464.4MB in the end (delta: -148.6MB). Peak memory consumption was 8.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.09ms. Allocated memory is still 490.7MB. Free memory was 464.4MB in the beginning and 462.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.97ms. Allocated memory is still 490.7MB. Free memory was 462.3MB in the beginning and 461.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 469.63ms. Allocated memory is still 490.7MB. Free memory was 461.2MB in the beginning and 437.1MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 718611.27ms. Allocated memory was 490.7MB in the beginning and 1.2GB in the end (delta: 738.2MB). Free memory was 437.1MB in the beginning and 362.1MB in the end (delta: 75.0MB). Peak memory consumption was 815.3MB. 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: 98]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (13020states) and FLOYD_HOARE automaton (currently 12 states, 114 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 120 known predicates. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (13020states) and FLOYD_HOARE automaton (currently 12 states, 114 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 120 known predicates. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (13020states) and FLOYD_HOARE automaton (currently 12 states, 114 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 120 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 146 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 718.5s, OverallIterations: 48, TraceHistogramMax: 4, PathProgramHistogramMax: 40, EmptinessCheckTime: 0.3s, AutomataDifference: 339.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 110652 SdHoareTripleChecker+Valid, 58.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110652 mSDsluCounter, 300779 SdHoareTripleChecker+Invalid, 49.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 57593 IncrementalHoareTripleChecker+Unchecked, 318255 mSDsCounter, 7967 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 131307 IncrementalHoareTripleChecker+Invalid, 196867 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7967 mSolverCounterUnsat, 8436 mSDtfsCounter, 131307 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16440 GetRequests, 9598 SyntacticMatches, 477 SemanticMatches, 6364 ConstructedPredicates, 15 IntricatePredicates, 2 DeprecatedPredicates, 324956 ImplicationChecksByTransitivity, 406.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13020occurred in iteration=47, InterpolantAutomatonStates: 3479, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.0s AutomataMinimizationTime, 47 MinimizatonAttempts, 96394 StatesRemovedByMinimization, 45 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 359.0s InterpolantComputationTime, 11833 NumberOfCodeBlocks, 11666 NumberOfCodeBlocksAsserted, 143 NumberOfCheckSat, 17298 ConstructedInterpolants, 1735 QuantifiedInterpolants, 391588 SizeOfPredicates, 1422 NumberOfNonLiveVariables, 13045 ConjunctsInSsa, 2495 ConjunctsInUnsatCore, 135 InterpolantComputations, 5 PerfectInterpolantSequences, 781/3813 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