/usr/bin/java -Xmx8000000000 -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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-bc289cb [2022-01-28 13:12:22,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-28 13:12:22,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-28 13:12:22,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-28 13:12:22,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-28 13:12:22,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-28 13:12:22,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-28 13:12:22,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-28 13:12:22,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-28 13:12:22,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-28 13:12:22,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-28 13:12:22,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-28 13:12:22,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-28 13:12:22,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-28 13:12:22,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-28 13:12:22,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-28 13:12:22,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-28 13:12:22,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-28 13:12:22,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-28 13:12:22,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-28 13:12:22,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-28 13:12:22,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-28 13:12:22,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-28 13:12:22,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-28 13:12:22,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-28 13:12:22,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-28 13:12:22,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-28 13:12:22,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-28 13:12:22,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-28 13:12:22,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-28 13:12:22,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-28 13:12:22,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-28 13:12:22,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-28 13:12:22,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-28 13:12:22,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-28 13:12:22,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-28 13:12:22,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-28 13:12:22,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-28 13:12:22,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-28 13:12:22,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-28 13:12:22,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-28 13:12:22,630 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.epf [2022-01-28 13:12:22,643 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-28 13:12:22,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-28 13:12:22,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-28 13:12:22,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-28 13:12:22,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-28 13:12:22,644 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-28 13:12:22,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-28 13:12:22,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-28 13:12:22,645 INFO L138 SettingsManager]: * Use SBE=true [2022-01-28 13:12:22,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-28 13:12:22,645 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-28 13:12:22,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-28 13:12:22,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-28 13:12:22,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-28 13:12:22,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-28 13:12:22,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-28 13:12:22,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-28 13:12:22,646 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-28 13:12:22,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-28 13:12:22,646 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-28 13:12:22,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-28 13:12:22,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-28 13:12:22,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-28 13:12:22,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-28 13:12:22,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-28 13:12:22,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 13:12:22,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-28 13:12:22,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-28 13:12:22,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-28 13:12:22,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-28 13:12:22,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-28 13:12:22,647 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-28 13:12:22,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-28 13:12:22,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-28 13:12:22,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-28 13:12:22,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-28 13:12:22,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-28 13:12:22,870 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-28 13:12:22,872 INFO L275 PluginConnector]: CDTParser initialized [2022-01-28 13:12:22,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2022-01-28 13:12:22,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91778a9ab/71968de57b2a407e829b22223fdfb2d1/FLAG9fbb02a26 [2022-01-28 13:12:23,301 INFO L306 CDTParser]: Found 1 translation units. [2022-01-28 13:12:23,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2022-01-28 13:12:23,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91778a9ab/71968de57b2a407e829b22223fdfb2d1/FLAG9fbb02a26 [2022-01-28 13:12:23,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91778a9ab/71968de57b2a407e829b22223fdfb2d1 [2022-01-28 13:12:23,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-28 13:12:23,326 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-28 13:12:23,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-28 13:12:23,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-28 13:12:23,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-28 13:12:23,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:12:23" (1/1) ... [2022-01-28 13:12:23,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cae2065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:12:23, skipping insertion in model container [2022-01-28 13:12:23,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:12:23" (1/1) ... [2022-01-28 13:12:23,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-28 13:12:23,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-28 13:12:23,549 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-bad-threaded-sum-2.wvr.c[2476,2489] [2022-01-28 13:12:23,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2022-01-28 13:12:23,562 INFO L203 MainTranslator]: Completed pre-run [2022-01-28 13:12:23,590 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-bad-threaded-sum-2.wvr.c[2476,2489] [2022-01-28 13:12:23,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2022-01-28 13:12:23,600 INFO L208 MainTranslator]: Completed translation [2022-01-28 13:12:23,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:12:23 WrapperNode [2022-01-28 13:12:23,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-28 13:12:23,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-28 13:12:23,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-28 13:12:23,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-28 13:12:23,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:12:23" (1/1) ... [2022-01-28 13:12:23,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:12:23" (1/1) ... [2022-01-28 13:12:23,633 INFO L137 Inliner]: procedures = 21, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2022-01-28 13:12:23,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-28 13:12:23,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-28 13:12:23,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-28 13:12:23,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-28 13:12:23,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:12:23" (1/1) ... [2022-01-28 13:12:23,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:12:23" (1/1) ... [2022-01-28 13:12:23,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:12:23" (1/1) ... [2022-01-28 13:12:23,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:12:23" (1/1) ... [2022-01-28 13:12:23,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:12:23" (1/1) ... [2022-01-28 13:12:23,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:12:23" (1/1) ... [2022-01-28 13:12:23,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:12:23" (1/1) ... [2022-01-28 13:12:23,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-28 13:12:23,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-28 13:12:23,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-28 13:12:23,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-28 13:12:23,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:12:23" (1/1) ... [2022-01-28 13:12:23,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 13:12:23,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:12:23,692 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) [2022-01-28 13:12:23,700 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 [2022-01-28 13:12:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-28 13:12:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-28 13:12:23,718 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-28 13:12:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-28 13:12:23,718 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-28 13:12:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-28 13:12:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-28 13:12:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-28 13:12:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-28 13:12:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-28 13:12:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-28 13:12:23,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-28 13:12:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-28 13:12:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-28 13:12:23,720 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-28 13:12:23,768 INFO L234 CfgBuilder]: Building ICFG [2022-01-28 13:12:23,769 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-28 13:12:23,927 INFO L275 CfgBuilder]: Performing block encoding [2022-01-28 13:12:23,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-28 13:12:23,976 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-28 13:12:23,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:12:23 BoogieIcfgContainer [2022-01-28 13:12:23,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-28 13:12:23,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-28 13:12:23,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-28 13:12:23,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-28 13:12:23,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:12:23" (1/3) ... [2022-01-28 13:12:23,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a8352f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:12:23, skipping insertion in model container [2022-01-28 13:12:23,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:12:23" (2/3) ... [2022-01-28 13:12:23,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a8352f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:12:23, skipping insertion in model container [2022-01-28 13:12:23,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:12:23" (3/3) ... [2022-01-28 13:12:23,999 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2022-01-28 13:12:24,002 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-28 13:12:24,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-28 13:12:24,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-28 13:12:24,002 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-28 13:12:24,041 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,041 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,041 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,042 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,042 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,042 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,042 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,042 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,042 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,042 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,042 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,042 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,042 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,043 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,043 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,043 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,043 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,043 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,043 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,043 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,044 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,044 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,044 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,044 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,044 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,044 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,044 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,045 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,045 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,045 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,045 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,045 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,045 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,045 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,045 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,045 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,047 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,047 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,048 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,048 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,048 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,048 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,049 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,049 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,049 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,049 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:12:24,052 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-28 13:12:24,090 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-28 13:12:24,095 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 [2022-01-28 13:12:24,096 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-28 13:12:24,107 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 89 places, 88 transitions, 192 flow [2022-01-28 13:12:24,156 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:24,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:24,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-28 13:12:24,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:12:24,179 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] [2022-01-28 13:12:24,179 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:12:24,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:12:24,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1436780155, now seen corresponding path program 1 times [2022-01-28 13:12:24,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:12:24,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028464207] [2022-01-28 13:12:24,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:12:24,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:12:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:12:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:12:24,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:12:24,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028464207] [2022-01-28 13:12:24,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028464207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:12:24,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:12:24,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-28 13:12:24,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947058454] [2022-01-28 13:12:24,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:12:24,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-28 13:12:24,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:12:24,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-28 13:12:24,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-28 13:12:24,385 INFO L87 Difference]: Start difference. First operand has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 0 states have call successors, (0), 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 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:24,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:12:24,423 INFO L93 Difference]: Finished difference Result 336 states and 794 transitions. [2022-01-28 13:12:24,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 13:12:24,426 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-28 13:12:24,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:12:24,434 INFO L225 Difference]: With dead ends: 336 [2022-01-28 13:12:24,434 INFO L226 Difference]: Without dead ends: 334 [2022-01-28 13:12:24,435 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 [2022-01-28 13:12:24,438 INFO L933 BasicCegarLoop]: 66 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, 66 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 [2022-01-28 13:12:24,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:12:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-01-28 13:12:24,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2022-01-28 13:12:24,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 2.3783783783783785) internal successors, (792), 333 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:24,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 792 transitions. [2022-01-28 13:12:24,490 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 792 transitions. Word has length 64 [2022-01-28 13:12:24,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:12:24,490 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 792 transitions. [2022-01-28 13:12:24,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:24,491 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 792 transitions. [2022-01-28 13:12:24,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-28 13:12:24,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:12:24,493 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] [2022-01-28 13:12:24,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-28 13:12:24,493 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:12:24,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:12:24,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1759613989, now seen corresponding path program 1 times [2022-01-28 13:12:24,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:12:24,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472312070] [2022-01-28 13:12:24,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:12:24,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:12:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:12:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:12:24,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:12:24,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472312070] [2022-01-28 13:12:24,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472312070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:12:24,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:12:24,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-28 13:12:24,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114985434] [2022-01-28 13:12:24,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:12:24,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-28 13:12:24,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:12:24,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-28 13:12:24,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-28 13:12:24,703 INFO L87 Difference]: Start difference. First operand 334 states and 792 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:24,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:12:24,811 INFO L93 Difference]: Finished difference Result 508 states and 1257 transitions. [2022-01-28 13:12:24,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-28 13:12:24,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-28 13:12:24,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:12:24,814 INFO L225 Difference]: With dead ends: 508 [2022-01-28 13:12:24,814 INFO L226 Difference]: Without dead ends: 508 [2022-01-28 13:12:24,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 13:12:24,815 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 79 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:12:24,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 216 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:12:24,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-01-28 13:12:24,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 392. [2022-01-28 13:12:24,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 2.421994884910486) internal successors, (947), 391 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 947 transitions. [2022-01-28 13:12:24,830 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 947 transitions. Word has length 64 [2022-01-28 13:12:24,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:12:24,831 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 947 transitions. [2022-01-28 13:12:24,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:24,831 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 947 transitions. [2022-01-28 13:12:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-28 13:12:24,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:12:24,833 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] [2022-01-28 13:12:24,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-28 13:12:24,833 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:12:24,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:12:24,834 INFO L85 PathProgramCache]: Analyzing trace with hash -924374402, now seen corresponding path program 1 times [2022-01-28 13:12:24,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:12:24,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367605263] [2022-01-28 13:12:24,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:12:24,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:12:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:12:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:12:24,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:12:24,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367605263] [2022-01-28 13:12:24,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367605263] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:12:24,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448964404] [2022-01-28 13:12:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:12:24,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:12:24,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:12:24,992 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) [2022-01-28 13:12:24,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-28 13:12:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:12:25,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-28 13:12:25,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:12:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:12:25,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:12:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:12:25,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448964404] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:12:25,814 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:12:25,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2022-01-28 13:12:25,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484028583] [2022-01-28 13:12:25,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:12:25,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-28 13:12:25,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:12:25,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-28 13:12:25,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-01-28 13:12:25,816 INFO L87 Difference]: Start difference. First operand 392 states and 947 transitions. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:26,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:12:26,037 INFO L93 Difference]: Finished difference Result 687 states and 1710 transitions. [2022-01-28 13:12:26,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-28 13:12:26,037 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 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 67 [2022-01-28 13:12:26,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:12:26,040 INFO L225 Difference]: With dead ends: 687 [2022-01-28 13:12:26,040 INFO L226 Difference]: Without dead ends: 615 [2022-01-28 13:12:26,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-01-28 13:12:26,041 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 193 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:12:26,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 582 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:12:26,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-01-28 13:12:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 377. [2022-01-28 13:12:26,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.4627659574468086) internal successors, (926), 376 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:26,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 926 transitions. [2022-01-28 13:12:26,053 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 926 transitions. Word has length 67 [2022-01-28 13:12:26,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:12:26,053 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 926 transitions. [2022-01-28 13:12:26,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:26,054 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 926 transitions. [2022-01-28 13:12:26,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-28 13:12:26,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:12:26,055 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] [2022-01-28 13:12:26,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-28 13:12:26,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:12:26,260 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:12:26,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:12:26,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1477238862, now seen corresponding path program 1 times [2022-01-28 13:12:26,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:12:26,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612811716] [2022-01-28 13:12:26,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:12:26,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:12:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:12:26,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:12:26,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:12:26,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612811716] [2022-01-28 13:12:26,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612811716] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:12:26,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729142575] [2022-01-28 13:12:26,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:12:26,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:12:26,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:12:26,668 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) [2022-01-28 13:12:26,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-28 13:12:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:12:26,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-28 13:12:26,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:12:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:12:27,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:12:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:12:28,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729142575] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-28 13:12:28,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-28 13:12:28,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13, 15] total 31 [2022-01-28 13:12:28,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012551011] [2022-01-28 13:12:28,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:12:28,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-28 13:12:28,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:12:28,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-28 13:12:28,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-01-28 13:12:28,414 INFO L87 Difference]: Start difference. First operand 377 states and 926 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:29,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:12:29,595 INFO L93 Difference]: Finished difference Result 1227 states and 3160 transitions. [2022-01-28 13:12:29,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-28 13:12:29,596 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-28 13:12:29,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:12:29,601 INFO L225 Difference]: With dead ends: 1227 [2022-01-28 13:12:29,601 INFO L226 Difference]: Without dead ends: 1116 [2022-01-28 13:12:29,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=433, Invalid=1823, Unknown=0, NotChecked=0, Total=2256 [2022-01-28 13:12:29,602 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 446 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-28 13:12:29,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 1040 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 376 Invalid, 0 Unknown, 99 Unchecked, 0.4s Time] [2022-01-28 13:12:29,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-01-28 13:12:29,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 445. [2022-01-28 13:12:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.515765765765766) internal successors, (1117), 444 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:29,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1117 transitions. [2022-01-28 13:12:29,618 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1117 transitions. Word has length 68 [2022-01-28 13:12:29,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:12:29,618 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 1117 transitions. [2022-01-28 13:12:29,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:29,619 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1117 transitions. [2022-01-28 13:12:29,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-28 13:12:29,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:12:29,620 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] [2022-01-28 13:12:29,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-28 13:12:29,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-28 13:12:29,836 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:12:29,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:12:29,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1846595665, now seen corresponding path program 1 times [2022-01-28 13:12:29,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:12:29,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803798698] [2022-01-28 13:12:29,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:12:29,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:12:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:12:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:12:30,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:12:30,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803798698] [2022-01-28 13:12:30,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803798698] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:12:30,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127817872] [2022-01-28 13:12:30,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:12:30,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:12:30,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:12:30,409 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) [2022-01-28 13:12:30,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-28 13:12:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:12:30,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-28 13:12:30,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:12:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:12:31,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:12:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:12:32,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127817872] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:12:32,985 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:12:32,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 17] total 34 [2022-01-28 13:12:32,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645064968] [2022-01-28 13:12:32,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:12:32,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-28 13:12:32,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:12:32,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-28 13:12:32,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2022-01-28 13:12:32,987 INFO L87 Difference]: Start difference. First operand 445 states and 1117 transitions. Second operand has 34 states, 34 states have (on average 4.5588235294117645) internal successors, (155), 34 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:41,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:12:41,100 INFO L93 Difference]: Finished difference Result 3417 states and 8680 transitions. [2022-01-28 13:12:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-28 13:12:41,101 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.5588235294117645) internal successors, (155), 34 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-28 13:12:41,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:12:41,110 INFO L225 Difference]: With dead ends: 3417 [2022-01-28 13:12:41,111 INFO L226 Difference]: Without dead ends: 2352 [2022-01-28 13:12:41,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1686, Invalid=7626, Unknown=0, NotChecked=0, Total=9312 [2022-01-28 13:12:41,113 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 1619 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:12:41,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1619 Valid, 2016 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1000 Invalid, 0 Unknown, 87 Unchecked, 2.0s Time] [2022-01-28 13:12:41,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2022-01-28 13:12:41,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 867. [2022-01-28 13:12:41,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 2.6547344110854505) internal successors, (2299), 866 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:41,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2299 transitions. [2022-01-28 13:12:41,140 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2299 transitions. Word has length 71 [2022-01-28 13:12:41,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:12:41,140 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 2299 transitions. [2022-01-28 13:12:41,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.5588235294117645) internal successors, (155), 34 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:41,140 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2299 transitions. [2022-01-28 13:12:41,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-28 13:12:41,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:12:41,142 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:12:41,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-28 13:12:41,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:12:41,360 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:12:41,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:12:41,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1244300115, now seen corresponding path program 2 times [2022-01-28 13:12:41,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:12:41,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690037080] [2022-01-28 13:12:41,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:12:41,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:12:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:12:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:12:41,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:12:41,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690037080] [2022-01-28 13:12:41,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690037080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:12:41,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:12:41,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 13:12:41,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926644606] [2022-01-28 13:12:41,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:12:41,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 13:12:41,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:12:41,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 13:12:41,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-28 13:12:41,426 INFO L87 Difference]: Start difference. First operand 867 states and 2299 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:41,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:12:41,515 INFO L93 Difference]: Finished difference Result 1279 states and 3412 transitions. [2022-01-28 13:12:41,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-28 13:12:41,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-28 13:12:41,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:12:41,520 INFO L225 Difference]: With dead ends: 1279 [2022-01-28 13:12:41,520 INFO L226 Difference]: Without dead ends: 1279 [2022-01-28 13:12:41,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-28 13:12:41,521 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 55 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:12:41,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 276 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:12:41,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-01-28 13:12:41,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 759. [2022-01-28 13:12:41,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 2.604221635883905) internal successors, (1974), 758 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:41,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1974 transitions. [2022-01-28 13:12:41,537 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1974 transitions. Word has length 72 [2022-01-28 13:12:41,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:12:41,537 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1974 transitions. [2022-01-28 13:12:41,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:12:41,537 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1974 transitions. [2022-01-28 13:12:41,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-28 13:12:41,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:12:41,539 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] [2022-01-28 13:12:41,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-28 13:12:41,539 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:12:41,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:12:41,539 INFO L85 PathProgramCache]: Analyzing trace with hash 955660810, now seen corresponding path program 2 times [2022-01-28 13:12:41,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:12:41,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503246699] [2022-01-28 13:12:41,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:12:41,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:12:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:12:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:12:42,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:12:42,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503246699] [2022-01-28 13:12:42,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503246699] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:12:42,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136980779] [2022-01-28 13:12:42,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:12:42,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:12:42,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:12:42,290 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) [2022-01-28 13:12:42,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-28 13:12:42,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:12:42,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:12:42,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-28 13:12:42,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:12:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:12:43,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:12:46,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:12:46,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136980779] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:12:46,009 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:12:46,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 42 [2022-01-28 13:12:46,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259247125] [2022-01-28 13:12:46,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:12:46,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-28 13:12:46,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:12:46,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-28 13:12:46,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1467, Unknown=0, NotChecked=0, Total=1722 [2022-01-28 13:12:46,011 INFO L87 Difference]: Start difference. First operand 759 states and 1974 transitions. Second operand has 42 states, 42 states have (on average 4.190476190476191) internal successors, (176), 42 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:13:34,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:13:34,246 INFO L93 Difference]: Finished difference Result 4126 states and 10556 transitions. [2022-01-28 13:13:34,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-01-28 13:13:34,247 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.190476190476191) internal successors, (176), 42 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-28 13:13:34,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:13:34,260 INFO L225 Difference]: With dead ends: 4126 [2022-01-28 13:13:34,260 INFO L226 Difference]: Without dead ends: 3202 [2022-01-28 13:13:34,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9660 ImplicationChecksByTransitivity, 42.0s TimeCoverageRelationStatistics Valid=3755, Invalid=24301, Unknown=0, NotChecked=0, Total=28056 [2022-01-28 13:13:34,267 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 2013 mSDsluCounter, 4212 mSDsCounter, 0 mSdLazyCounter, 2740 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2013 SdHoareTripleChecker+Valid, 4117 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 2740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:13:34,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2013 Valid, 4117 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 2740 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-01-28 13:13:34,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2022-01-28 13:13:34,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 1047. [2022-01-28 13:13:34,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 2.6873804971319313) internal successors, (2811), 1046 states have internal predecessors, (2811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:13:34,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2811 transitions. [2022-01-28 13:13:34,299 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2811 transitions. Word has length 74 [2022-01-28 13:13:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:13:34,299 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2811 transitions. [2022-01-28 13:13:34,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.190476190476191) internal successors, (176), 42 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:13:34,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2811 transitions. [2022-01-28 13:13:34,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-28 13:13:34,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:13:34,304 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] [2022-01-28 13:13:34,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-28 13:13:34,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:13:34,507 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:13:34,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:13:34,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2090126194, now seen corresponding path program 3 times [2022-01-28 13:13:34,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:13:34,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146363066] [2022-01-28 13:13:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:13:34,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:13:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:13:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:13:35,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:13:35,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146363066] [2022-01-28 13:13:35,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146363066] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:13:35,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847431358] [2022-01-28 13:13:35,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:13:35,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:13:35,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:13:35,181 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) [2022-01-28 13:13:35,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-28 13:13:35,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-28 13:13:35,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:13:35,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-28 13:13:35,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:13:36,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:13:36,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:13:39,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:13:39,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847431358] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:13:39,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:13:39,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 35 [2022-01-28 13:13:39,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212601922] [2022-01-28 13:13:39,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:13:39,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-28 13:13:39,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:13:39,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-28 13:13:39,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=993, Unknown=0, NotChecked=0, Total=1190 [2022-01-28 13:13:39,686 INFO L87 Difference]: Start difference. First operand 1047 states and 2811 transitions. Second operand has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:14:02,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:14:02,199 INFO L93 Difference]: Finished difference Result 3166 states and 8482 transitions. [2022-01-28 13:14:02,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-28 13:14:02,199 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-28 13:14:02,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:14:02,209 INFO L225 Difference]: With dead ends: 3166 [2022-01-28 13:14:02,209 INFO L226 Difference]: Without dead ends: 2707 [2022-01-28 13:14:02,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3705 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=1638, Invalid=9492, Unknown=0, NotChecked=0, Total=11130 [2022-01-28 13:14:02,211 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 1146 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-01-28 13:14:02,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 2283 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-01-28 13:14:02,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2022-01-28 13:14:02,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 1187. [2022-01-28 13:14:02,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 2.725126475548061) internal successors, (3232), 1186 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:14:02,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 3232 transitions. [2022-01-28 13:14:02,240 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 3232 transitions. Word has length 74 [2022-01-28 13:14:02,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:14:02,241 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 3232 transitions. [2022-01-28 13:14:02,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:14:02,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 3232 transitions. [2022-01-28 13:14:02,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-28 13:14:02,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:14:02,246 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:14:02,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-28 13:14:02,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:14:02,451 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:14:02,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:14:02,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1335703416, now seen corresponding path program 3 times [2022-01-28 13:14:02,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:14:02,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54893159] [2022-01-28 13:14:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:14:02,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:14:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:14:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:14:02,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:14:02,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54893159] [2022-01-28 13:14:02,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54893159] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:14:02,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890684938] [2022-01-28 13:14:02,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:14:02,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:14:02,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:14:02,985 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) [2022-01-28 13:14:02,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-28 13:14:03,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-28 13:14:03,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:14:03,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-28 13:14:03,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:14:03,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:14:03,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:14:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:14:05,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890684938] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:14:05,006 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:14:05,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 45 [2022-01-28 13:14:05,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029554197] [2022-01-28 13:14:05,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:14:05,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-28 13:14:05,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:14:05,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-28 13:14:05,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1635, Unknown=0, NotChecked=0, Total=1980 [2022-01-28 13:14:05,008 INFO L87 Difference]: Start difference. First operand 1187 states and 3232 transitions. Second operand has 45 states, 45 states have (on average 4.044444444444444) internal successors, (182), 45 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:14:38,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:14:38,745 INFO L93 Difference]: Finished difference Result 3835 states and 10307 transitions. [2022-01-28 13:14:38,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-28 13:14:38,746 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.044444444444444) internal successors, (182), 45 states have internal predecessors, (182), 0 states have call successors, (0), 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 76 [2022-01-28 13:14:38,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:14:38,758 INFO L225 Difference]: With dead ends: 3835 [2022-01-28 13:14:38,759 INFO L226 Difference]: Without dead ends: 3421 [2022-01-28 13:14:38,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8577 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=4636, Invalid=21124, Unknown=0, NotChecked=0, Total=25760 [2022-01-28 13:14:38,762 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1766 mSDsluCounter, 4186 mSDsCounter, 0 mSdLazyCounter, 2517 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 4167 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 2517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-01-28 13:14:38,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1766 Valid, 4167 Invalid, 2874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 2517 Invalid, 0 Unknown, 146 Unchecked, 6.8s Time] [2022-01-28 13:14:38,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3421 states. [2022-01-28 13:14:38,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3421 to 1331. [2022-01-28 13:14:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1330 states have (on average 2.7518796992481205) internal successors, (3660), 1330 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:14:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 3660 transitions. [2022-01-28 13:14:38,802 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 3660 transitions. Word has length 76 [2022-01-28 13:14:38,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:14:38,802 INFO L470 AbstractCegarLoop]: Abstraction has 1331 states and 3660 transitions. [2022-01-28 13:14:38,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.044444444444444) internal successors, (182), 45 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:14:38,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 3660 transitions. [2022-01-28 13:14:38,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-28 13:14:38,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:14:38,808 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:14:38,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-28 13:14:39,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:14:39,014 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:14:39,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:14:39,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1260039537, now seen corresponding path program 4 times [2022-01-28 13:14:39,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:14:39,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005832381] [2022-01-28 13:14:39,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:14:39,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:14:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:14:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:14:40,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:14:40,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005832381] [2022-01-28 13:14:40,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005832381] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:14:40,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647160168] [2022-01-28 13:14:40,144 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 13:14:40,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:14:40,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:14:40,148 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) [2022-01-28 13:14:40,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-28 13:14:40,310 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 13:14:40,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:14:40,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-28 13:14:40,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:14:42,093 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:14:42,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:14:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:14:47,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647160168] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:14:47,792 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:14:47,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 20] total 45 [2022-01-28 13:14:47,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065808894] [2022-01-28 13:14:47,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:14:47,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-28 13:14:47,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:14:47,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-28 13:14:47,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1651, Unknown=0, NotChecked=0, Total=1980 [2022-01-28 13:14:47,793 INFO L87 Difference]: Start difference. First operand 1331 states and 3660 transitions. Second operand has 45 states, 45 states have (on average 4.022222222222222) internal successors, (181), 45 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:16:46,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:16:46,592 INFO L93 Difference]: Finished difference Result 5341 states and 14095 transitions. [2022-01-28 13:16:46,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-01-28 13:16:46,593 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.022222222222222) internal successors, (181), 45 states have internal predecessors, (181), 0 states have call successors, (0), 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 77 [2022-01-28 13:16:46,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:16:46,607 INFO L225 Difference]: With dead ends: 5341 [2022-01-28 13:16:46,607 INFO L226 Difference]: Without dead ends: 4432 [2022-01-28 13:16:46,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12310 ImplicationChecksByTransitivity, 108.4s TimeCoverageRelationStatistics Valid=4469, Invalid=28836, Unknown=1, NotChecked=0, Total=33306 [2022-01-28 13:16:46,609 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 1799 mSDsluCounter, 4613 mSDsCounter, 0 mSdLazyCounter, 2845 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 4544 SdHoareTripleChecker+Invalid, 3087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-01-28 13:16:46,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1799 Valid, 4544 Invalid, 3087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2845 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2022-01-28 13:16:46,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2022-01-28 13:16:46,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 1758. [2022-01-28 13:16:46,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1757 states have (on average 2.8144564598747865) internal successors, (4945), 1757 states have internal predecessors, (4945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:16:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 4945 transitions. [2022-01-28 13:16:46,668 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 4945 transitions. Word has length 77 [2022-01-28 13:16:46,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:16:46,669 INFO L470 AbstractCegarLoop]: Abstraction has 1758 states and 4945 transitions. [2022-01-28 13:16:46,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.022222222222222) internal successors, (181), 45 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:16:46,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 4945 transitions. [2022-01-28 13:16:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-28 13:16:46,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:16:46,673 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:16:46,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-28 13:16:46,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:16:46,890 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:16:46,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:16:46,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1044628751, now seen corresponding path program 5 times [2022-01-28 13:16:46,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:16:46,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303602313] [2022-01-28 13:16:46,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:16:46,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:16:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:16:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:16:47,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:16:47,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303602313] [2022-01-28 13:16:47,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303602313] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:16:47,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76206886] [2022-01-28 13:16:47,615 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 13:16:47,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:16:47,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:16:47,616 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) [2022-01-28 13:16:47,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-28 13:16:47,754 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-28 13:16:47,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:16:47,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-28 13:16:47,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:16:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:16:48,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:16:50,831 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:16:50,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76206886] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:16:50,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:16:50,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 37 [2022-01-28 13:16:50,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707039196] [2022-01-28 13:16:50,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:16:50,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 13:16:50,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:16:50,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 13:16:50,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1123, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 13:16:50,833 INFO L87 Difference]: Start difference. First operand 1758 states and 4945 transitions. Second operand has 37 states, 37 states have (on average 4.378378378378378) internal successors, (162), 37 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:17:03,729 WARN L227 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 161 DAG size of output: 116 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-28 13:17:50,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:17:50,311 INFO L93 Difference]: Finished difference Result 4969 states and 13356 transitions. [2022-01-28 13:17:50,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-28 13:17:50,311 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.378378378378378) internal successors, (162), 37 states have internal predecessors, (162), 0 states have call successors, (0), 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 77 [2022-01-28 13:17:50,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:17:50,319 INFO L225 Difference]: With dead ends: 4969 [2022-01-28 13:17:50,319 INFO L226 Difference]: Without dead ends: 3874 [2022-01-28 13:17:50,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4590 ImplicationChecksByTransitivity, 56.0s TimeCoverageRelationStatistics Valid=1901, Invalid=12855, Unknown=6, NotChecked=0, Total=14762 [2022-01-28 13:17:50,321 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 1671 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:17:50,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1671 Valid, 4068 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-01-28 13:17:50,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3874 states. [2022-01-28 13:17:50,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3874 to 2118. [2022-01-28 13:17:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 2117 states have (on average 2.824279641001417) internal successors, (5979), 2117 states have internal predecessors, (5979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:17:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 5979 transitions. [2022-01-28 13:17:50,378 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 5979 transitions. Word has length 77 [2022-01-28 13:17:50,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:17:50,378 INFO L470 AbstractCegarLoop]: Abstraction has 2118 states and 5979 transitions. [2022-01-28 13:17:50,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.378378378378378) internal successors, (162), 37 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:17:50,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 5979 transitions. [2022-01-28 13:17:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-28 13:17:50,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:17:50,382 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:17:50,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-28 13:17:50,591 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,SelfDestructingSolverStorable10 [2022-01-28 13:17:50,592 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:17:50,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:17:50,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1503926061, now seen corresponding path program 6 times [2022-01-28 13:17:50,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:17:50,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871709119] [2022-01-28 13:17:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:17:50,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:17:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:17:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:17:51,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:17:51,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871709119] [2022-01-28 13:17:51,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871709119] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:17:51,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587828451] [2022-01-28 13:17:51,272 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 13:17:51,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:17:51,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:17:51,273 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) [2022-01-28 13:17:51,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-28 13:17:51,461 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-28 13:17:51,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:17:51,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-28 13:17:51,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:17:53,387 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:17:53,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:17:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:17:56,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587828451] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:17:56,263 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:17:56,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 20] total 51 [2022-01-28 13:17:56,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743848341] [2022-01-28 13:17:56,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:17:56,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-28 13:17:56,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:17:56,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-28 13:17:56,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=2103, Unknown=0, NotChecked=0, Total=2550 [2022-01-28 13:17:56,266 INFO L87 Difference]: Start difference. First operand 2118 states and 5979 transitions. Second operand has 51 states, 51 states have (on average 3.392156862745098) internal successors, (173), 51 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:18:55,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:18:55,696 INFO L93 Difference]: Finished difference Result 6249 states and 16613 transitions. [2022-01-28 13:18:55,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-01-28 13:18:55,696 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.392156862745098) internal successors, (173), 51 states have internal predecessors, (173), 0 states have call successors, (0), 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 77 [2022-01-28 13:18:55,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:18:55,709 INFO L225 Difference]: With dead ends: 6249 [2022-01-28 13:18:55,709 INFO L226 Difference]: Without dead ends: 5229 [2022-01-28 13:18:55,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10316 ImplicationChecksByTransitivity, 51.7s TimeCoverageRelationStatistics Valid=3857, Invalid=24535, Unknown=0, NotChecked=0, Total=28392 [2022-01-28 13:18:55,711 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 1971 mSDsluCounter, 4891 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 4793 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-01-28 13:18:55,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1971 Valid, 4793 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 2415 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-01-28 13:18:55,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5229 states. [2022-01-28 13:18:55,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5229 to 2370. [2022-01-28 13:18:55,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 2369 states have (on average 2.8467707893626004) internal successors, (6744), 2369 states have internal predecessors, (6744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:18:55,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 6744 transitions. [2022-01-28 13:18:55,766 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 6744 transitions. Word has length 77 [2022-01-28 13:18:55,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:18:55,766 INFO L470 AbstractCegarLoop]: Abstraction has 2370 states and 6744 transitions. [2022-01-28 13:18:55,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.392156862745098) internal successors, (173), 51 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:18:55,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 6744 transitions. [2022-01-28 13:18:55,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-28 13:18:55,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:18:55,771 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] [2022-01-28 13:18:55,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-28 13:18:55,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:18:55,976 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:18:55,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:18:55,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1799553041, now seen corresponding path program 7 times [2022-01-28 13:18:55,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:18:55,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666902999] [2022-01-28 13:18:55,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:18:55,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:18:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:18:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:18:56,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:18:56,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666902999] [2022-01-28 13:18:56,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666902999] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:18:56,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714001384] [2022-01-28 13:18:56,710 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 13:18:56,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:18:56,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:18:56,711 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) [2022-01-28 13:18:56,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-28 13:18:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:18:56,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-28 13:18:56,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:18:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:18:58,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:19:01,990 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:19:01,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714001384] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:19:01,990 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:19:01,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21, 19] total 46 [2022-01-28 13:19:01,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515306745] [2022-01-28 13:19:01,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:19:01,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-28 13:19:01,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:19:01,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-28 13:19:01,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1757, Unknown=0, NotChecked=0, Total=2070 [2022-01-28 13:19:01,992 INFO L87 Difference]: Start difference. First operand 2370 states and 6744 transitions. Second operand has 46 states, 46 states have (on average 4.086956521739131) internal successors, (188), 46 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:19:59,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:19:59,675 INFO L93 Difference]: Finished difference Result 9169 states and 24341 transitions. [2022-01-28 13:19:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2022-01-28 13:19:59,675 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.086956521739131) internal successors, (188), 46 states have internal predecessors, (188), 0 states have call successors, (0), 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 78 [2022-01-28 13:19:59,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:19:59,692 INFO L225 Difference]: With dead ends: 9169 [2022-01-28 13:19:59,692 INFO L226 Difference]: Without dead ends: 7720 [2022-01-28 13:19:59,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14693 ImplicationChecksByTransitivity, 50.5s TimeCoverageRelationStatistics Valid=4528, Invalid=34874, Unknown=0, NotChecked=0, Total=39402 [2022-01-28 13:19:59,694 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 2600 mSDsluCounter, 4995 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2600 SdHoareTripleChecker+Valid, 4853 SdHoareTripleChecker+Invalid, 2998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-01-28 13:19:59,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2600 Valid, 4853 Invalid, 2998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 2602 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-01-28 13:19:59,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7720 states. [2022-01-28 13:19:59,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7720 to 2958. [2022-01-28 13:19:59,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2957 states have (on average 2.9073385187690226) internal successors, (8597), 2957 states have internal predecessors, (8597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:19:59,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 8597 transitions. [2022-01-28 13:19:59,770 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 8597 transitions. Word has length 78 [2022-01-28 13:19:59,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:19:59,770 INFO L470 AbstractCegarLoop]: Abstraction has 2958 states and 8597 transitions. [2022-01-28 13:19:59,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.086956521739131) internal successors, (188), 46 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:19:59,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 8597 transitions. [2022-01-28 13:19:59,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-28 13:19:59,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:19:59,776 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] [2022-01-28 13:19:59,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-28 13:19:59,991 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,SelfDestructingSolverStorable12 [2022-01-28 13:19:59,992 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:19:59,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:19:59,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1217995345, now seen corresponding path program 8 times [2022-01-28 13:19:59,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:19:59,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448844103] [2022-01-28 13:19:59,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:19:59,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:20:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:20:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:20:01,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:20:01,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448844103] [2022-01-28 13:20:01,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448844103] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:20:01,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773738779] [2022-01-28 13:20:01,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:20:01,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:20:01,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:20:01,363 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) [2022-01-28 13:20:01,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-28 13:20:01,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:20:01,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:20:01,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-28 13:20:01,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:20:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:20:03,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:20:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:20:07,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773738779] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:20:07,934 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:20:07,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19, 19] total 49 [2022-01-28 13:20:07,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036389717] [2022-01-28 13:20:07,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:20:07,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-28 13:20:07,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:20:07,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-28 13:20:07,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1985, Unknown=0, NotChecked=0, Total=2352 [2022-01-28 13:20:07,936 INFO L87 Difference]: Start difference. First operand 2958 states and 8597 transitions. Second operand has 49 states, 49 states have (on average 3.6530612244897958) internal successors, (179), 49 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:20:33,583 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-28 13:20:37,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-28 13:21:39,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-28 13:22:40,128 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-28 13:23:55,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:23:55,149 INFO L93 Difference]: Finished difference Result 9507 states and 25914 transitions. [2022-01-28 13:23:55,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2022-01-28 13:23:55,150 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.6530612244897958) internal successors, (179), 49 states have internal predecessors, (179), 0 states have call successors, (0), 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 78 [2022-01-28 13:23:55,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:23:55,167 INFO L225 Difference]: With dead ends: 9507 [2022-01-28 13:23:55,167 INFO L226 Difference]: Without dead ends: 8133 [2022-01-28 13:23:55,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30288 ImplicationChecksByTransitivity, 197.4s TimeCoverageRelationStatistics Valid=9230, Invalid=68331, Unknown=1, NotChecked=0, Total=77562 [2022-01-28 13:23:55,171 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 2529 mSDsluCounter, 6167 mSDsCounter, 0 mSdLazyCounter, 4260 mSolverCounterSat, 344 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2529 SdHoareTripleChecker+Valid, 6086 SdHoareTripleChecker+Invalid, 4607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 4260 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.8s IncrementalHoareTripleChecker+Time [2022-01-28 13:23:55,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2529 Valid, 6086 Invalid, 4607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 4260 Invalid, 3 Unknown, 0 Unchecked, 34.8s Time] [2022-01-28 13:23:55,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8133 states. [2022-01-28 13:23:55,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8133 to 3366. [2022-01-28 13:23:55,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3366 states, 3365 states have (on average 2.928677563150074) internal successors, (9855), 3365 states have internal predecessors, (9855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:23:55,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 9855 transitions. [2022-01-28 13:23:55,257 INFO L78 Accepts]: Start accepts. Automaton has 3366 states and 9855 transitions. Word has length 78 [2022-01-28 13:23:55,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:23:55,257 INFO L470 AbstractCegarLoop]: Abstraction has 3366 states and 9855 transitions. [2022-01-28 13:23:55,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.6530612244897958) internal successors, (179), 49 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:23:55,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3366 states and 9855 transitions. [2022-01-28 13:23:55,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-28 13:23:55,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:23:55,265 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] [2022-01-28 13:23:55,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-01-28 13:23:55,478 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,SelfDestructingSolverStorable13 [2022-01-28 13:23:55,478 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:23:55,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:23:55,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1762627179, now seen corresponding path program 9 times [2022-01-28 13:23:55,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:23:55,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035904432] [2022-01-28 13:23:55,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:23:55,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:23:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:23:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:23:55,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:23:55,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035904432] [2022-01-28 13:23:55,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035904432] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:23:55,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566896107] [2022-01-28 13:23:55,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:23:55,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:23:55,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:23:55,650 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) [2022-01-28 13:23:55,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-28 13:23:55,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-28 13:23:55,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:23:55,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-28 13:23:55,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:23:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:23:56,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:23:56,789 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:23:56,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566896107] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:23:56,789 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:23:56,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 27 [2022-01-28 13:23:56,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659333533] [2022-01-28 13:23:56,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:23:56,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 13:23:56,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:23:56,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 13:23:56,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2022-01-28 13:23:56,791 INFO L87 Difference]: Start difference. First operand 3366 states and 9855 transitions. Second operand has 27 states, 27 states have (on average 4.111111111111111) internal successors, (111), 27 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:23:58,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:23:58,820 INFO L93 Difference]: Finished difference Result 7810 states and 21838 transitions. [2022-01-28 13:23:58,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-28 13:23:58,820 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.111111111111111) internal successors, (111), 27 states have internal predecessors, (111), 0 states have call successors, (0), 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 78 [2022-01-28 13:23:58,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:23:58,835 INFO L225 Difference]: With dead ends: 7810 [2022-01-28 13:23:58,836 INFO L226 Difference]: Without dead ends: 7810 [2022-01-28 13:23:58,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 135 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=459, Invalid=2621, Unknown=0, NotChecked=0, Total=3080 [2022-01-28 13:23:58,836 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 1030 mSDsluCounter, 2398 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:23:58,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1030 Valid, 2431 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-28 13:23:58,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7810 states. [2022-01-28 13:23:58,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7810 to 4078. [2022-01-28 13:23:58,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4078 states, 4077 states have (on average 2.966151582045622) internal successors, (12093), 4077 states have internal predecessors, (12093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:23:58,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4078 states to 4078 states and 12093 transitions. [2022-01-28 13:23:58,929 INFO L78 Accepts]: Start accepts. Automaton has 4078 states and 12093 transitions. Word has length 78 [2022-01-28 13:23:58,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:23:58,930 INFO L470 AbstractCegarLoop]: Abstraction has 4078 states and 12093 transitions. [2022-01-28 13:23:58,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.111111111111111) internal successors, (111), 27 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:23:58,930 INFO L276 IsEmpty]: Start isEmpty. Operand 4078 states and 12093 transitions. [2022-01-28 13:23:58,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-28 13:23:58,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:23:58,941 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] [2022-01-28 13:23:58,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-28 13:23:59,157 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,SelfDestructingSolverStorable14 [2022-01-28 13:23:59,158 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:23:59,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:23:59,158 INFO L85 PathProgramCache]: Analyzing trace with hash 63050411, now seen corresponding path program 10 times [2022-01-28 13:23:59,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:23:59,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298277755] [2022-01-28 13:23:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:23:59,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:23:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:24:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:24:06,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:24:06,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298277755] [2022-01-28 13:24:06,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298277755] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:24:06,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084106091] [2022-01-28 13:24:06,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 13:24:06,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:24:06,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:24:06,246 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) [2022-01-28 13:24:06,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-28 13:24:06,397 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 13:24:06,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:24:06,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-28 13:24:06,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:24:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:24:09,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:24:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:24:31,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084106091] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:24:31,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:24:31,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 19] total 43 [2022-01-28 13:24:31,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002270523] [2022-01-28 13:24:31,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:24:31,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-28 13:24:31,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:24:31,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-28 13:24:31,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1553, Unknown=7, NotChecked=0, Total=1806 [2022-01-28 13:24:31,161 INFO L87 Difference]: Start difference. First operand 4078 states and 12093 transitions. Second operand has 43 states, 43 states have (on average 4.209302325581396) internal successors, (181), 43 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:24:56,545 WARN L227 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 177 DAG size of output: 139 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-28 13:25:08,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-28 13:25:19,510 WARN L227 SmtUtils]: Spent 9.20s on a formula simplification. DAG size of input: 181 DAG size of output: 144 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-28 13:25:31,052 WARN L227 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 193 DAG size of output: 80 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-28 13:25:55,098 WARN L227 SmtUtils]: Spent 10.94s on a formula simplification. DAG size of input: 128 DAG size of output: 72 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-28 13:26:26,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-28 13:26:28,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-28 13:26:30,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-28 13:26:33,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2022-01-28 13:26:37,410 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-28 13:26:37,411 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 [2022-01-28 13:26:37,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-28 13:26:37,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3620 ImplicationChecksByTransitivity, 122.0s TimeCoverageRelationStatistics Valid=1510, Invalid=10039, Unknown=7, NotChecked=0, Total=11556 [2022-01-28 13:26:37,744 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 752 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 205 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2022-01-28 13:26:37,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 2027 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1620 Invalid, 4 Unknown, 0 Unchecked, 25.4s Time] [2022-01-28 13:26:37,745 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-28 13:26:37,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-28 13:26:37,946 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,SelfDestructingSolverStorable15 [2022-01-28 13:26:37,946 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (4078states) and FLOYD_HOARE automaton (currently 72 states, 43 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 108 known predicates. [2022-01-28 13:26:37,948 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-28 13:26:37,948 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-28 13:26:37,950 INFO L732 BasicCegarLoop]: Path program histogram: [10, 3, 1, 1, 1] [2022-01-28 13:26:37,951 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-28 13:26:37,951 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-28 13:26:37,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 01:26:37 BasicIcfg [2022-01-28 13:26:37,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-28 13:26:37,953 INFO L158 Benchmark]: Toolchain (without parser) took 854627.25ms. Allocated memory was 198.2MB in the beginning and 305.1MB in the end (delta: 107.0MB). Free memory was 149.1MB in the beginning and 85.0MB in the end (delta: 64.2MB). Peak memory consumption was 172.1MB. Max. memory is 8.0GB. [2022-01-28 13:26:37,953 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory was 165.4MB in the beginning and 165.2MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-28 13:26:37,953 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.11ms. Allocated memory is still 198.2MB. Free memory was 148.9MB in the beginning and 174.2MB in the end (delta: -25.3MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. [2022-01-28 13:26:37,954 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.04ms. Allocated memory is still 198.2MB. Free memory was 174.2MB in the beginning and 172.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-28 13:26:37,954 INFO L158 Benchmark]: Boogie Preprocessor took 26.59ms. Allocated memory is still 198.2MB. Free memory was 172.6MB in the beginning and 171.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-28 13:26:37,954 INFO L158 Benchmark]: RCFGBuilder took 316.34ms. Allocated memory is still 198.2MB. Free memory was 171.6MB in the beginning and 157.9MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-01-28 13:26:37,954 INFO L158 Benchmark]: TraceAbstraction took 853973.98ms. Allocated memory was 198.2MB in the beginning and 305.1MB in the end (delta: 107.0MB). Free memory was 157.4MB in the beginning and 85.0MB in the end (delta: 72.5MB). Peak memory consumption was 179.9MB. Max. memory is 8.0GB. [2022-01-28 13:26:37,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory was 165.4MB in the beginning and 165.2MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 273.11ms. Allocated memory is still 198.2MB. Free memory was 148.9MB in the beginning and 174.2MB in the end (delta: -25.3MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.04ms. Allocated memory is still 198.2MB. Free memory was 174.2MB in the beginning and 172.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.59ms. Allocated memory is still 198.2MB. Free memory was 172.6MB in the beginning and 171.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 316.34ms. Allocated memory is still 198.2MB. Free memory was 171.6MB in the beginning and 157.9MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 853973.98ms. Allocated memory was 198.2MB in the beginning and 305.1MB in the end (delta: 107.0MB). Free memory was 157.4MB in the beginning and 85.0MB in the end (delta: 72.5MB). Peak memory consumption was 179.9MB. Max. memory is 8.0GB. * 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: 95]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4078states) and FLOYD_HOARE automaton (currently 72 states, 43 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 108 known predicates. - TimeoutResultAtElement [Line: 89]: 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 (4078states) and FLOYD_HOARE automaton (currently 72 states, 43 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 108 known predicates. - TimeoutResultAtElement [Line: 90]: 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 (4078states) and FLOYD_HOARE automaton (currently 72 states, 43 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 108 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 100 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 853.9s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.1s, AutomataDifference: 765.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 19669 SdHoareTripleChecker+Valid, 126.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19669 mSDsluCounter, 43565 SdHoareTripleChecker+Invalid, 121.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 332 IncrementalHoareTripleChecker+Unchecked, 43857 mSDsCounter, 2546 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25328 IncrementalHoareTripleChecker+Invalid, 28213 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2546 mSolverCounterUnsat, 2395 mSDtfsCounter, 25328 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3390 GetRequests, 1669 SyntacticMatches, 19 SemanticMatches, 1701 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 102590 ImplicationChecksByTransitivity, 683.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4078occurred in iteration=15, InterpolantAutomatonStates: 1365, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 15 MinimizatonAttempts, 29345 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 82.4s InterpolantComputationTime, 2146 NumberOfCodeBlocks, 2146 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 3077 ConstructedInterpolants, 27 QuantifiedInterpolants, 79233 SizeOfPredicates, 191 NumberOfNonLiveVariables, 2181 ConjunctsInSsa, 364 ConjunctsInUnsatCore, 42 InterpolantComputations, 4 PerfectInterpolantSequences, 18/348 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