/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 12:34:19,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 12:34:19,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 12:34:19,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 12:34:19,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 12:34:19,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 12:34:19,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 12:34:19,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 12:34:19,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 12:34:19,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 12:34:19,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 12:34:19,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 12:34:19,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 12:34:19,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 12:34:19,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 12:34:19,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 12:34:19,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 12:34:19,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 12:34:19,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 12:34:19,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 12:34:19,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 12:34:19,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 12:34:19,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 12:34:19,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 12:34:19,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 12:34:19,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 12:34:19,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 12:34:19,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 12:34:19,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 12:34:19,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 12:34:19,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 12:34:19,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 12:34:19,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 12:34:19,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 12:34:19,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 12:34:19,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 12:34:19,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 12:34:19,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 12:34:19,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 12:34:19,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 12:34:19,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 12:34:19,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2022-01-18 12:34:19,596 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 12:34:19,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 12:34:19,596 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 12:34:19,596 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 12:34:19,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 12:34:19,597 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 12:34:19,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 12:34:19,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 12:34:19,598 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 12:34:19,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 12:34:19,598 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 12:34:19,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 12:34:19,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 12:34:19,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 12:34:19,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 12:34:19,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 12:34:19,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 12:34:19,599 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 12:34:19,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 12:34:19,599 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 12:34:19,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 12:34:19,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 12:34:19,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 12:34:19,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 12:34:19,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 12:34:19,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:34:19,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 12:34:19,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 12:34:19,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 12:34:19,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 12:34:19,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 12:34:19,601 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 12:34:19,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 12:34:19,601 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 12:34:19,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 12:34:19,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 12:34:19,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 12:34:19,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 12:34:19,900 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 12:34:19,901 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 12:34:19,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2022-01-18 12:34:19,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d861f694c/da9a07671e0a4201a3fd6e1aac3e0e78/FLAG93690ba78 [2022-01-18 12:34:20,389 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 12:34:20,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2022-01-18 12:34:20,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d861f694c/da9a07671e0a4201a3fd6e1aac3e0e78/FLAG93690ba78 [2022-01-18 12:34:20,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d861f694c/da9a07671e0a4201a3fd6e1aac3e0e78 [2022-01-18 12:34:20,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 12:34:20,421 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 12:34:20,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 12:34:20,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 12:34:20,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 12:34:20,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:34:20" (1/1) ... [2022-01-18 12:34:20,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dadd3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:34:20, skipping insertion in model container [2022-01-18 12:34:20,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:34:20" (1/1) ... [2022-01-18 12:34:20,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 12:34:20,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 12:34:20,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c[2147,2160] [2022-01-18 12:34:20,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:34:20,635 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 12:34:20,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c[2147,2160] [2022-01-18 12:34:20,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:34:20,692 INFO L208 MainTranslator]: Completed translation [2022-01-18 12:34:20,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:34:20 WrapperNode [2022-01-18 12:34:20,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 12:34:20,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 12:34:20,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 12:34:20,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 12:34:20,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:34:20" (1/1) ... [2022-01-18 12:34:20,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:34:20" (1/1) ... [2022-01-18 12:34:20,727 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-01-18 12:34:20,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 12:34:20,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 12:34:20,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 12:34:20,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 12:34:20,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:34:20" (1/1) ... [2022-01-18 12:34:20,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:34:20" (1/1) ... [2022-01-18 12:34:20,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:34:20" (1/1) ... [2022-01-18 12:34:20,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:34:20" (1/1) ... [2022-01-18 12:34:20,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:34:20" (1/1) ... [2022-01-18 12:34:20,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:34:20" (1/1) ... [2022-01-18 12:34:20,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:34:20" (1/1) ... [2022-01-18 12:34:20,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 12:34:20,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 12:34:20,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 12:34:20,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 12:34:20,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:34:20" (1/1) ... [2022-01-18 12:34:20,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:34:20,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:34:20,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 12:34:20,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 12:34:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 12:34:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 12:34:20,831 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 12:34:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 12:34:20,831 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 12:34:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 12:34:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 12:34:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 12:34:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 12:34:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 12:34:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 12:34:20,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 12:34:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 12:34:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 12:34:20,833 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 12:34:20,896 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 12:34:20,898 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 12:34:21,077 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 12:34:21,148 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 12:34:21,148 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 12:34:21,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:34:21 BoogieIcfgContainer [2022-01-18 12:34:21,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 12:34:21,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 12:34:21,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 12:34:21,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 12:34:21,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 12:34:20" (1/3) ... [2022-01-18 12:34:21,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b8bc53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:34:21, skipping insertion in model container [2022-01-18 12:34:21,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:34:20" (2/3) ... [2022-01-18 12:34:21,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b8bc53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:34:21, skipping insertion in model container [2022-01-18 12:34:21,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:34:21" (3/3) ... [2022-01-18 12:34:21,156 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2022-01-18 12:34:21,161 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 12:34:21,161 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 12:34:21,161 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 12:34:21,161 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 12:34:21,221 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,221 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,221 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,222 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,222 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,223 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,224 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,224 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,224 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,225 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,225 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,226 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,226 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,226 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,227 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,227 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,227 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,227 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,228 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,228 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,228 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,228 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,228 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,228 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,229 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,229 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,229 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,229 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,245 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,246 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,247 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:34:21,250 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 12:34:21,304 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 12:34:21,318 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 12:34:21,318 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 12:34:21,335 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 84 transitions, 184 flow [2022-01-18 12:34:21,399 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 330 states, 329 states have (on average 2.5866261398176293) internal successors, (851), 329 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:21,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 330 states, 329 states have (on average 2.5866261398176293) internal successors, (851), 329 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:21,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-18 12:34:21,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:34:21,425 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] [2022-01-18 12:34:21,427 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:34:21,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:34:21,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1161800666, now seen corresponding path program 1 times [2022-01-18 12:34:21,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:34:21,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927066453] [2022-01-18 12:34:21,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:34:21,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:34:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:34:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:21,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:34:21,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927066453] [2022-01-18 12:34:21,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927066453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:34:21,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:34:21,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 12:34:21,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754005943] [2022-01-18 12:34:21,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:34:21,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 12:34:21,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:34:21,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 12:34:21,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 12:34:21,691 INFO L87 Difference]: Start difference. First operand has 330 states, 329 states have (on average 2.5866261398176293) internal successors, (851), 329 states have internal predecessors, (851), 0 states have call successors, (0), 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 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:21,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:34:21,722 INFO L93 Difference]: Finished difference Result 330 states and 780 transitions. [2022-01-18 12:34:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 12:34:21,724 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-18 12:34:21,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:34:21,736 INFO L225 Difference]: With dead ends: 330 [2022-01-18 12:34:21,736 INFO L226 Difference]: Without dead ends: 328 [2022-01-18 12:34:21,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 12:34:21,740 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:34:21,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:34:21,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-01-18 12:34:21,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-01-18 12:34:21,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 2.379204892966361) internal successors, (778), 327 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:21,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 778 transitions. [2022-01-18 12:34:21,795 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 778 transitions. Word has length 60 [2022-01-18 12:34:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:34:21,796 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 778 transitions. [2022-01-18 12:34:21,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 778 transitions. [2022-01-18 12:34:21,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-18 12:34:21,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:34:21,800 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] [2022-01-18 12:34:21,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 12:34:21,800 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:34:21,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:34:21,801 INFO L85 PathProgramCache]: Analyzing trace with hash 651266489, now seen corresponding path program 1 times [2022-01-18 12:34:21,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:34:21,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772996345] [2022-01-18 12:34:21,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:34:21,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:34:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:34:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:21,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:34:21,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772996345] [2022-01-18 12:34:21,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772996345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:34:21,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:34:21,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:34:21,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201056091] [2022-01-18 12:34:21,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:34:21,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:34:21,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:34:21,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:34:21,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:34:21,986 INFO L87 Difference]: Start difference. First operand 328 states and 778 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:22,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:34:22,045 INFO L93 Difference]: Finished difference Result 502 states and 1210 transitions. [2022-01-18 12:34:22,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:34:22,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-18 12:34:22,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:34:22,049 INFO L225 Difference]: With dead ends: 502 [2022-01-18 12:34:22,050 INFO L226 Difference]: Without dead ends: 388 [2022-01-18 12:34:22,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:34:22,051 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 6 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:34:22,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 208 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:34:22,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-01-18 12:34:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 358. [2022-01-18 12:34:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 2.3977591036414565) internal successors, (856), 357 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 856 transitions. [2022-01-18 12:34:22,069 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 856 transitions. Word has length 60 [2022-01-18 12:34:22,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:34:22,070 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 856 transitions. [2022-01-18 12:34:22,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 856 transitions. [2022-01-18 12:34:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 12:34:22,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:34:22,072 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] [2022-01-18 12:34:22,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 12:34:22,073 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:34:22,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:34:22,073 INFO L85 PathProgramCache]: Analyzing trace with hash -72683847, now seen corresponding path program 1 times [2022-01-18 12:34:22,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:34:22,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669198002] [2022-01-18 12:34:22,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:34:22,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:34:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:34:22,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:22,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:34:22,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669198002] [2022-01-18 12:34:22,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669198002] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:34:22,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460226700] [2022-01-18 12:34:22,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:34:22,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:34:22,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:34:22,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:34:22,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 12:34:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:34:22,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 12:34:22,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:34:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:22,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:34:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:22,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460226700] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 12:34:22,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 12:34:22,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2022-01-18 12:34:22,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596113524] [2022-01-18 12:34:22,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:34:22,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 12:34:22,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:34:22,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 12:34:22,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:34:22,792 INFO L87 Difference]: Start difference. First operand 358 states and 856 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:22,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:34:22,848 INFO L93 Difference]: Finished difference Result 425 states and 1038 transitions. [2022-01-18 12:34:22,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 12:34:22,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-18 12:34:22,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:34:22,854 INFO L225 Difference]: With dead ends: 425 [2022-01-18 12:34:22,854 INFO L226 Difference]: Without dead ends: 425 [2022-01-18 12:34:22,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:34:22,858 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 34 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:34:22,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 188 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:34:22,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-01-18 12:34:22,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 393. [2022-01-18 12:34:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 2.423469387755102) internal successors, (950), 392 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:22,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 950 transitions. [2022-01-18 12:34:22,883 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 950 transitions. Word has length 65 [2022-01-18 12:34:22,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:34:22,885 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 950 transitions. [2022-01-18 12:34:22,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:22,886 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 950 transitions. [2022-01-18 12:34:22,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 12:34:22,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:34:22,889 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] [2022-01-18 12:34:22,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 12:34:23,102 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 [2022-01-18 12:34:23,103 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:34:23,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:34:23,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2097537209, now seen corresponding path program 2 times [2022-01-18 12:34:23,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:34:23,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410942202] [2022-01-18 12:34:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:34:23,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:34:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:34:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:23,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:34:23,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410942202] [2022-01-18 12:34:23,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410942202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:34:23,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:34:23,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 12:34:23,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568449539] [2022-01-18 12:34:23,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:34:23,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 12:34:23,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:34:23,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 12:34:23,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 12:34:23,236 INFO L87 Difference]: Start difference. First operand 393 states and 950 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:23,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:34:23,286 INFO L93 Difference]: Finished difference Result 652 states and 1598 transitions. [2022-01-18 12:34:23,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 12:34:23,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-18 12:34:23,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:34:23,293 INFO L225 Difference]: With dead ends: 652 [2022-01-18 12:34:23,293 INFO L226 Difference]: Without dead ends: 652 [2022-01-18 12:34:23,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 12:34:23,299 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 36 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:34:23,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 213 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:34:23,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-01-18 12:34:23,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 401. [2022-01-18 12:34:23,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 2.45) internal successors, (980), 400 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 980 transitions. [2022-01-18 12:34:23,316 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 980 transitions. Word has length 65 [2022-01-18 12:34:23,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:34:23,317 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 980 transitions. [2022-01-18 12:34:23,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:23,317 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 980 transitions. [2022-01-18 12:34:23,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 12:34:23,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:34:23,319 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] [2022-01-18 12:34:23,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 12:34:23,319 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:34:23,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:34:23,320 INFO L85 PathProgramCache]: Analyzing trace with hash -282039363, now seen corresponding path program 3 times [2022-01-18 12:34:23,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:34:23,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715890209] [2022-01-18 12:34:23,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:34:23,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:34:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:34:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:23,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:34:23,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715890209] [2022-01-18 12:34:23,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715890209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:34:23,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:34:23,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:34:23,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367880812] [2022-01-18 12:34:23,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:34:23,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:34:23,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:34:23,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:34:23,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:34:23,475 INFO L87 Difference]: Start difference. First operand 401 states and 980 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:23,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:34:23,545 INFO L93 Difference]: Finished difference Result 547 states and 1356 transitions. [2022-01-18 12:34:23,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:34:23,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-18 12:34:23,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:34:23,549 INFO L225 Difference]: With dead ends: 547 [2022-01-18 12:34:23,550 INFO L226 Difference]: Without dead ends: 535 [2022-01-18 12:34:23,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:34:23,552 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 26 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:34:23,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 267 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:34:23,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-01-18 12:34:23,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 405. [2022-01-18 12:34:23,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 2.452970297029703) internal successors, (991), 404 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 991 transitions. [2022-01-18 12:34:23,567 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 991 transitions. Word has length 65 [2022-01-18 12:34:23,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:34:23,568 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 991 transitions. [2022-01-18 12:34:23,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:23,568 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 991 transitions. [2022-01-18 12:34:23,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 12:34:23,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:34:23,571 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] [2022-01-18 12:34:23,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 12:34:23,572 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:34:23,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:34:23,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2018243491, now seen corresponding path program 4 times [2022-01-18 12:34:23,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:34:23,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712538619] [2022-01-18 12:34:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:34:23,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:34:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:34:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:23,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:34:23,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712538619] [2022-01-18 12:34:23,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712538619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:34:23,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:34:23,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 12:34:23,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987418523] [2022-01-18 12:34:23,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:34:23,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 12:34:23,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:34:23,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 12:34:23,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 12:34:23,652 INFO L87 Difference]: Start difference. First operand 405 states and 991 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:23,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:34:23,688 INFO L93 Difference]: Finished difference Result 472 states and 1153 transitions. [2022-01-18 12:34:23,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:34:23,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-18 12:34:23,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:34:23,692 INFO L225 Difference]: With dead ends: 472 [2022-01-18 12:34:23,692 INFO L226 Difference]: Without dead ends: 448 [2022-01-18 12:34:23,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:34:23,694 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 31 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:34:23,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 194 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:34:23,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-18 12:34:23,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 401. [2022-01-18 12:34:23,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 2.43) internal successors, (972), 400 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:23,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 972 transitions. [2022-01-18 12:34:23,708 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 972 transitions. Word has length 65 [2022-01-18 12:34:23,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:34:23,709 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 972 transitions. [2022-01-18 12:34:23,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:23,710 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 972 transitions. [2022-01-18 12:34:23,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:34:23,711 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:34:23,711 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] [2022-01-18 12:34:23,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 12:34:23,712 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:34:23,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:34:23,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1804809499, now seen corresponding path program 1 times [2022-01-18 12:34:23,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:34:23,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065195990] [2022-01-18 12:34:23,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:34:23,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:34:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:34:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:24,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:34:24,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065195990] [2022-01-18 12:34:24,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065195990] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:34:24,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579274521] [2022-01-18 12:34:24,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:34:24,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:34:24,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:34:24,033 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:34:24,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 12:34:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:34:24,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 12:34:24,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:34:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:24,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:34:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:25,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579274521] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:34:25,071 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:34:25,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 20 [2022-01-18 12:34:25,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036147768] [2022-01-18 12:34:25,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:34:25,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 12:34:25,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:34:25,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 12:34:25,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:34:25,073 INFO L87 Difference]: Start difference. First operand 401 states and 972 transitions. Second operand has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:26,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:34:26,451 INFO L93 Difference]: Finished difference Result 2227 states and 5706 transitions. [2022-01-18 12:34:26,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 12:34:26,452 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 0 states have call successors, (0), 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 [2022-01-18 12:34:26,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:34:26,462 INFO L225 Difference]: With dead ends: 2227 [2022-01-18 12:34:26,462 INFO L226 Difference]: Without dead ends: 1957 [2022-01-18 12:34:26,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=456, Invalid=1266, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 12:34:26,464 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 587 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:34:26,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 1337 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:34:26,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2022-01-18 12:34:26,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 702. [2022-01-18 12:34:26,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 2.637660485021398) internal successors, (1849), 701 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:26,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1849 transitions. [2022-01-18 12:34:26,496 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1849 transitions. Word has length 67 [2022-01-18 12:34:26,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:34:26,496 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 1849 transitions. [2022-01-18 12:34:26,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:26,496 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1849 transitions. [2022-01-18 12:34:26,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:34:26,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:34:26,498 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] [2022-01-18 12:34:26,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 12:34:26,722 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,SelfDestructingSolverStorable6 [2022-01-18 12:34:26,723 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:34:26,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:34:26,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2075173441, now seen corresponding path program 2 times [2022-01-18 12:34:26,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:34:26,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131011453] [2022-01-18 12:34:26,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:34:26,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:34:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:34:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:26,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:34:26,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131011453] [2022-01-18 12:34:26,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131011453] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:34:26,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037252728] [2022-01-18 12:34:26,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:34:26,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:34:26,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:34:26,835 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:34:26,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 12:34:26,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:34:26,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:34:26,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 12:34:26,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:34:27,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:27,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:34:27,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:27,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037252728] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:34:27,423 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:34:27,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-01-18 12:34:27,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876540076] [2022-01-18 12:34:27,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:34:27,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 12:34:27,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:34:27,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 12:34:27,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-01-18 12:34:27,425 INFO L87 Difference]: Start difference. First operand 702 states and 1849 transitions. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:34:27,630 INFO L93 Difference]: Finished difference Result 917 states and 2371 transitions. [2022-01-18 12:34:27,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 12:34:27,631 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 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 [2022-01-18 12:34:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:34:27,635 INFO L225 Difference]: With dead ends: 917 [2022-01-18 12:34:27,635 INFO L226 Difference]: Without dead ends: 887 [2022-01-18 12:34:27,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:34:27,636 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 77 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:34:27,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 613 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:34:27,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-01-18 12:34:27,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 643. [2022-01-18 12:34:27,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.587227414330218) internal successors, (1661), 642 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:27,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1661 transitions. [2022-01-18 12:34:27,654 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1661 transitions. Word has length 67 [2022-01-18 12:34:27,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:34:27,654 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1661 transitions. [2022-01-18 12:34:27,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:27,655 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1661 transitions. [2022-01-18 12:34:27,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:34:27,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:34:27,657 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:34:27,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 12:34:27,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:34:27,881 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:34:27,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:34:27,882 INFO L85 PathProgramCache]: Analyzing trace with hash -145870821, now seen corresponding path program 3 times [2022-01-18 12:34:27,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:34:27,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143599369] [2022-01-18 12:34:27,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:34:27,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:34:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:34:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:28,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:34:28,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143599369] [2022-01-18 12:34:28,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143599369] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:34:28,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53487249] [2022-01-18 12:34:28,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:34:28,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:34:28,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:34:28,068 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:34:28,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 12:34:28,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:34:28,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:34:28,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 12:34:28,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:34:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:28,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:34:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:28,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53487249] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:34:28,707 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:34:28,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 20 [2022-01-18 12:34:28,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299128401] [2022-01-18 12:34:28,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:34:28,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 12:34:28,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:34:28,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 12:34:28,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:34:28,708 INFO L87 Difference]: Start difference. First operand 643 states and 1661 transitions. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:30,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:34:30,512 INFO L93 Difference]: Finished difference Result 1292 states and 3392 transitions. [2022-01-18 12:34:30,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 12:34:30,512 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:34:30,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:34:30,518 INFO L225 Difference]: With dead ends: 1292 [2022-01-18 12:34:30,519 INFO L226 Difference]: Without dead ends: 1292 [2022-01-18 12:34:30,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=693, Invalid=3339, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 12:34:30,521 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 496 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:34:30,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 1822 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:34:30,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2022-01-18 12:34:30,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 726. [2022-01-18 12:34:30,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 2.613793103448276) internal successors, (1895), 725 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:30,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1895 transitions. [2022-01-18 12:34:30,544 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1895 transitions. Word has length 72 [2022-01-18 12:34:30,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:34:30,544 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 1895 transitions. [2022-01-18 12:34:30,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:30,544 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1895 transitions. [2022-01-18 12:34:30,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:34:30,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:34:30,546 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:34:30,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-18 12:34:30,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:34:30,759 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:34:30,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:34:30,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1917541861, now seen corresponding path program 4 times [2022-01-18 12:34:30,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:34:30,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789401742] [2022-01-18 12:34:30,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:34:30,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:34:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:34:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:30,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:34:30,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789401742] [2022-01-18 12:34:30,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789401742] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:34:30,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941295064] [2022-01-18 12:34:30,900 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:34:30,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:34:30,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:34:30,901 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:34:30,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 12:34:30,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:34:30,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:34:30,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:34:30,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:34:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:31,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:34:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:31,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941295064] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:34:31,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:34:31,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-01-18 12:34:31,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140268657] [2022-01-18 12:34:31,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:34:31,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:34:31,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:34:31,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:34:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:34:31,903 INFO L87 Difference]: Start difference. First operand 726 states and 1895 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:34,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:34:34,419 INFO L93 Difference]: Finished difference Result 2666 states and 6740 transitions. [2022-01-18 12:34:34,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 12:34:34,424 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:34:34,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:34:34,436 INFO L225 Difference]: With dead ends: 2666 [2022-01-18 12:34:34,437 INFO L226 Difference]: Without dead ends: 2666 [2022-01-18 12:34:34,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1762 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1167, Invalid=4089, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 12:34:34,454 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 667 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:34:34,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 1362 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:34:34,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2022-01-18 12:34:34,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 742. [2022-01-18 12:34:34,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 2.6167341430499325) internal successors, (1939), 741 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:34,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1939 transitions. [2022-01-18 12:34:34,489 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1939 transitions. Word has length 72 [2022-01-18 12:34:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:34:34,489 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1939 transitions. [2022-01-18 12:34:34,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:34,489 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1939 transitions. [2022-01-18 12:34:34,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:34:34,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:34:34,491 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:34:34,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 12:34:34,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-18 12:34:34,712 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:34:34,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:34:34,713 INFO L85 PathProgramCache]: Analyzing trace with hash -899018853, now seen corresponding path program 5 times [2022-01-18 12:34:34,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:34:34,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904112783] [2022-01-18 12:34:34,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:34:34,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:34:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:34:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:34,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:34:34,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904112783] [2022-01-18 12:34:34,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904112783] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:34:34,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615435334] [2022-01-18 12:34:34,948 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:34:34,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:34:34,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:34:34,950 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:34:34,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 12:34:35,012 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:34:35,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:34:35,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:34:35,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:34:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:34:35,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:35:15,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:15,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615435334] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:35:15,487 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:35:15,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-01-18 12:35:15,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495038730] [2022-01-18 12:35:15,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:35:15,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:35:15,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:35:15,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:35:15,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:35:15,488 INFO L87 Difference]: Start difference. First operand 742 states and 1939 transitions. Second operand has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:21,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:35:21,678 INFO L93 Difference]: Finished difference Result 1870 states and 4875 transitions. [2022-01-18 12:35:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 12:35:21,679 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 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 [2022-01-18 12:35:21,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:35:21,687 INFO L225 Difference]: With dead ends: 1870 [2022-01-18 12:35:21,687 INFO L226 Difference]: Without dead ends: 1870 [2022-01-18 12:35:21,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2266 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1326, Invalid=5480, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 12:35:21,690 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 617 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:35:21,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 1545 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 12:35:21,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2022-01-18 12:35:21,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 750. [2022-01-18 12:35:21,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 2.628838451268358) internal successors, (1969), 749 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:21,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1969 transitions. [2022-01-18 12:35:21,716 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1969 transitions. Word has length 72 [2022-01-18 12:35:21,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:35:21,717 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 1969 transitions. [2022-01-18 12:35:21,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:21,717 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1969 transitions. [2022-01-18 12:35:21,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:35:21,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:35:21,719 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:35:21,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 12:35:21,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:21,936 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:35:21,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:35:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1016371871, now seen corresponding path program 6 times [2022-01-18 12:35:21,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:35:21,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223623880] [2022-01-18 12:35:21,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:35:21,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:35:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:22,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:22,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:35:22,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223623880] [2022-01-18 12:35:22,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223623880] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:35:22,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747390102] [2022-01-18 12:35:22,076 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:35:22,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:22,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:35:22,077 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:35:22,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 12:35:22,142 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 12:35:22,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:35:22,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:35:22,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:35:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:22,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:35:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:23,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747390102] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:35:23,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:35:23,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-01-18 12:35:23,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708648368] [2022-01-18 12:35:23,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:35:23,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:35:23,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:35:23,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:35:23,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:35:23,009 INFO L87 Difference]: Start difference. First operand 750 states and 1969 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:24,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:35:24,020 INFO L93 Difference]: Finished difference Result 1648 states and 4295 transitions. [2022-01-18 12:35:24,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 12:35:24,021 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 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 [2022-01-18 12:35:24,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:35:24,027 INFO L225 Difference]: With dead ends: 1648 [2022-01-18 12:35:24,027 INFO L226 Difference]: Without dead ends: 1624 [2022-01-18 12:35:24,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=516, Invalid=1934, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 12:35:24,029 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 515 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:35:24,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 1322 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:35:24,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2022-01-18 12:35:24,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 942. [2022-01-18 12:35:24,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.6790648246546227) internal successors, (2521), 941 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:24,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2521 transitions. [2022-01-18 12:35:24,057 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2521 transitions. Word has length 72 [2022-01-18 12:35:24,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:35:24,057 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2521 transitions. [2022-01-18 12:35:24,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:24,058 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2521 transitions. [2022-01-18 12:35:24,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:35:24,060 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:35:24,060 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:35:24,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 12:35:24,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:24,275 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:35:24,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:35:24,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1259204635, now seen corresponding path program 7 times [2022-01-18 12:35:24,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:35:24,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567895739] [2022-01-18 12:35:24,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:35:24,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:35:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:24,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:35:24,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567895739] [2022-01-18 12:35:24,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567895739] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:35:24,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779961479] [2022-01-18 12:35:24,410 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:35:24,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:24,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:35:24,411 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:35:24,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 12:35:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:24,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 12:35:24,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:35:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:24,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:35:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:25,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779961479] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:35:25,047 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:35:25,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 22 [2022-01-18 12:35:25,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53973288] [2022-01-18 12:35:25,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:35:25,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 12:35:25,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:35:25,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 12:35:25,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-01-18 12:35:25,049 INFO L87 Difference]: Start difference. First operand 942 states and 2521 transitions. Second operand has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:26,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:35:26,872 INFO L93 Difference]: Finished difference Result 1966 states and 5300 transitions. [2022-01-18 12:35:26,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 12:35:26,873 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 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 [2022-01-18 12:35:26,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:35:26,881 INFO L225 Difference]: With dead ends: 1966 [2022-01-18 12:35:26,881 INFO L226 Difference]: Without dead ends: 1966 [2022-01-18 12:35:26,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1356 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=702, Invalid=4128, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 12:35:26,883 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 401 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:35:26,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 1741 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:35:26,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2022-01-18 12:35:26,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 966. [2022-01-18 12:35:26,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 965 states have (on average 2.6808290155440413) internal successors, (2587), 965 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:26,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 2587 transitions. [2022-01-18 12:35:26,912 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 2587 transitions. Word has length 72 [2022-01-18 12:35:26,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:35:26,912 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 2587 transitions. [2022-01-18 12:35:26,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:26,912 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 2587 transitions. [2022-01-18 12:35:26,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:35:26,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:35:26,915 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:35:26,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 12:35:27,138 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,SelfDestructingSolverStorable12 [2022-01-18 12:35:27,139 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:35:27,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:35:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2017239653, now seen corresponding path program 8 times [2022-01-18 12:35:27,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:35:27,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064838317] [2022-01-18 12:35:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:35:27,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:35:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:27,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:35:27,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064838317] [2022-01-18 12:35:27,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064838317] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:35:27,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712941748] [2022-01-18 12:35:27,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:35:27,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:27,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:35:27,343 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:35:27,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 12:35:27,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:35:27,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:35:27,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:35:27,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:35:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:27,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:35:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:28,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712941748] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:35:28,243 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:35:28,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2022-01-18 12:35:28,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631316851] [2022-01-18 12:35:28,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:35:28,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:35:28,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:35:28,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:35:28,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:35:28,244 INFO L87 Difference]: Start difference. First operand 966 states and 2587 transitions. Second operand has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:30,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:35:30,183 INFO L93 Difference]: Finished difference Result 2692 states and 7113 transitions. [2022-01-18 12:35:30,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 12:35:30,183 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 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 [2022-01-18 12:35:30,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:35:30,194 INFO L225 Difference]: With dead ends: 2692 [2022-01-18 12:35:30,195 INFO L226 Difference]: Without dead ends: 2692 [2022-01-18 12:35:30,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=670, Invalid=2636, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 12:35:30,196 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 415 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:35:30,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 1882 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:35:30,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2022-01-18 12:35:30,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 1086. [2022-01-18 12:35:30,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 2.7253456221198156) internal successors, (2957), 1085 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:30,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 2957 transitions. [2022-01-18 12:35:30,233 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 2957 transitions. Word has length 72 [2022-01-18 12:35:30,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:35:30,233 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 2957 transitions. [2022-01-18 12:35:30,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:30,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 2957 transitions. [2022-01-18 12:35:30,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:35:30,236 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:35:30,236 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:35:30,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 12:35:30,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-18 12:35:30,452 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:35:30,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:35:30,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1902016859, now seen corresponding path program 9 times [2022-01-18 12:35:30,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:35:30,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882403468] [2022-01-18 12:35:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:35:30,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:35:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:30,626 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:30,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:35:30,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882403468] [2022-01-18 12:35:30,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882403468] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:35:30,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333446683] [2022-01-18 12:35:30,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:35:30,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:30,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:35:30,627 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:35:30,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 12:35:30,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:35:30,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:35:30,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:35:30,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:35:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:30,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:35:31,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:31,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333446683] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:35:31,425 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:35:31,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2022-01-18 12:35:31,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437917718] [2022-01-18 12:35:31,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:35:31,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:35:31,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:35:31,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:35:31,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:35:31,426 INFO L87 Difference]: Start difference. First operand 1086 states and 2957 transitions. Second operand has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:33,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:35:33,010 INFO L93 Difference]: Finished difference Result 2686 states and 7052 transitions. [2022-01-18 12:35:33,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 12:35:33,010 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 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 [2022-01-18 12:35:33,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:35:33,018 INFO L225 Difference]: With dead ends: 2686 [2022-01-18 12:35:33,018 INFO L226 Difference]: Without dead ends: 2686 [2022-01-18 12:35:33,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=803, Invalid=2737, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 12:35:33,020 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 480 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:35:33,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 1431 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:35:33,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-18 12:35:33,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 1170. [2022-01-18 12:35:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 2.740804106073567) internal successors, (3204), 1169 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 3204 transitions. [2022-01-18 12:35:33,069 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 3204 transitions. Word has length 72 [2022-01-18 12:35:33,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:35:33,069 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 3204 transitions. [2022-01-18 12:35:33,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:33,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 3204 transitions. [2022-01-18 12:35:33,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:35:33,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:35:33,074 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:35:33,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 12:35:33,287 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,SelfDestructingSolverStorable14 [2022-01-18 12:35:33,287 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:35:33,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:35:33,288 INFO L85 PathProgramCache]: Analyzing trace with hash -477559713, now seen corresponding path program 10 times [2022-01-18 12:35:33,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:35:33,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827708904] [2022-01-18 12:35:33,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:35:33,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:35:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:33,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:35:33,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827708904] [2022-01-18 12:35:33,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827708904] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:35:33,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404249125] [2022-01-18 12:35:33,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:35:33,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:33,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:35:33,448 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:35:33,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 12:35:33,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:35:33,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:35:33,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:35:33,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:35:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:33,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:35:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:34,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404249125] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:35:34,319 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:35:34,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2022-01-18 12:35:34,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223144170] [2022-01-18 12:35:34,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:35:34,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 12:35:34,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:35:34,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 12:35:34,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-18 12:35:34,324 INFO L87 Difference]: Start difference. First operand 1170 states and 3204 transitions. Second operand has 17 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:36,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:35:36,142 INFO L93 Difference]: Finished difference Result 2418 states and 6569 transitions. [2022-01-18 12:35:36,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 12:35:36,142 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2022-01-18 12:35:36,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:35:36,149 INFO L225 Difference]: With dead ends: 2418 [2022-01-18 12:35:36,149 INFO L226 Difference]: Without dead ends: 2370 [2022-01-18 12:35:36,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1416 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=866, Invalid=3424, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 12:35:36,151 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 433 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:35:36,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 1343 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:35:36,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2022-01-18 12:35:36,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 1226. [2022-01-18 12:35:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 2.7542857142857144) internal successors, (3374), 1225 states have internal predecessors, (3374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 3374 transitions. [2022-01-18 12:35:36,189 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 3374 transitions. Word has length 72 [2022-01-18 12:35:36,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:35:36,190 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 3374 transitions. [2022-01-18 12:35:36,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:36,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 3374 transitions. [2022-01-18 12:35:36,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:35:36,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:35:36,193 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:35:36,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 12:35:36,403 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,SelfDestructingSolverStorable15 [2022-01-18 12:35:36,403 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:35:36,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:35:36,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1924749117, now seen corresponding path program 11 times [2022-01-18 12:35:36,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:35:36,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115229616] [2022-01-18 12:35:36,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:35:36,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:35:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:36,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:35:36,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115229616] [2022-01-18 12:35:36,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115229616] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:35:36,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143047215] [2022-01-18 12:35:36,506 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:35:36,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:36,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:35:36,507 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:35:36,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 12:35:36,562 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:35:36,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:35:36,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 12:35:36,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:35:36,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:36,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:35:37,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:37,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143047215] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:35:37,165 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:35:37,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 20 [2022-01-18 12:35:37,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628301162] [2022-01-18 12:35:37,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:35:37,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 12:35:37,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:35:37,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 12:35:37,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:35:37,167 INFO L87 Difference]: Start difference. First operand 1226 states and 3374 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:38,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:35:38,309 INFO L93 Difference]: Finished difference Result 1817 states and 4883 transitions. [2022-01-18 12:35:38,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 12:35:38,309 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 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 [2022-01-18 12:35:38,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:35:38,313 INFO L225 Difference]: With dead ends: 1817 [2022-01-18 12:35:38,313 INFO L226 Difference]: Without dead ends: 1781 [2022-01-18 12:35:38,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=540, Invalid=2322, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 12:35:38,314 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 430 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:35:38,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 1386 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:35:38,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2022-01-18 12:35:38,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1226. [2022-01-18 12:35:38,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 2.7510204081632654) internal successors, (3370), 1225 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 3370 transitions. [2022-01-18 12:35:38,344 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 3370 transitions. Word has length 72 [2022-01-18 12:35:38,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:35:38,344 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 3370 transitions. [2022-01-18 12:35:38,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:38,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 3370 transitions. [2022-01-18 12:35:38,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:35:38,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:35:38,348 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:35:38,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 12:35:38,571 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,SelfDestructingSolverStorable16 [2022-01-18 12:35:38,571 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:35:38,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:35:38,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1528466691, now seen corresponding path program 12 times [2022-01-18 12:35:38,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:35:38,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038562847] [2022-01-18 12:35:38,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:35:38,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:35:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:38,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:35:38,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038562847] [2022-01-18 12:35:38,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038562847] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:35:38,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949853434] [2022-01-18 12:35:38,711 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:35:38,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:38,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:35:38,712 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:35:38,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 12:35:38,784 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:35:38,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:35:38,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 12:35:38,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:35:39,000 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:39,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:35:39,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:39,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949853434] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:35:39,357 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:35:39,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 20 [2022-01-18 12:35:39,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717981716] [2022-01-18 12:35:39,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:35:39,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 12:35:39,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:35:39,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 12:35:39,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:35:39,359 INFO L87 Difference]: Start difference. First operand 1226 states and 3370 transitions. Second operand has 20 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:42,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:35:42,413 INFO L93 Difference]: Finished difference Result 3565 states and 9580 transitions. [2022-01-18 12:35:42,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-18 12:35:42,413 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 0 states have call successors, (0), 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 [2022-01-18 12:35:42,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:35:42,421 INFO L225 Difference]: With dead ends: 3565 [2022-01-18 12:35:42,421 INFO L226 Difference]: Without dead ends: 3463 [2022-01-18 12:35:42,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1838 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=847, Invalid=5315, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 12:35:42,423 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 443 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:35:42,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 2281 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 12:35:42,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2022-01-18 12:35:42,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 1626. [2022-01-18 12:35:42,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 2.8295384615384616) internal successors, (4598), 1625 states have internal predecessors, (4598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:42,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 4598 transitions. [2022-01-18 12:35:42,489 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 4598 transitions. Word has length 72 [2022-01-18 12:35:42,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:35:42,490 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 4598 transitions. [2022-01-18 12:35:42,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:42,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 4598 transitions. [2022-01-18 12:35:42,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:35:42,494 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:35:42,494 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:35:42,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-01-18 12:35:42,722 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,SelfDestructingSolverStorable17 [2022-01-18 12:35:42,722 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:35:42,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:35:42,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1747977597, now seen corresponding path program 13 times [2022-01-18 12:35:42,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:35:42,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67437883] [2022-01-18 12:35:42,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:35:42,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:35:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:42,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:35:42,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67437883] [2022-01-18 12:35:42,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67437883] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:35:42,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988115687] [2022-01-18 12:35:42,933 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:35:42,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:42,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:35:42,934 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:35:42,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 12:35:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:43,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:35:43,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:35:43,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:43,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:35:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:43,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988115687] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:35:43,873 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:35:43,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2022-01-18 12:35:43,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638658432] [2022-01-18 12:35:43,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:35:43,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:35:43,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:35:43,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:35:43,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:35:43,875 INFO L87 Difference]: Start difference. First operand 1626 states and 4598 transitions. Second operand has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:45,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:35:45,485 INFO L93 Difference]: Finished difference Result 2917 states and 7941 transitions. [2022-01-18 12:35:45,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 12:35:45,485 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 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 [2022-01-18 12:35:45,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:35:45,493 INFO L225 Difference]: With dead ends: 2917 [2022-01-18 12:35:45,493 INFO L226 Difference]: Without dead ends: 2917 [2022-01-18 12:35:45,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=436, Invalid=1544, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 12:35:45,494 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 377 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:35:45,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 1407 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:35:45,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2022-01-18 12:35:45,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1754. [2022-01-18 12:35:45,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1753 states have (on average 2.8168853394181403) internal successors, (4938), 1753 states have internal predecessors, (4938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 4938 transitions. [2022-01-18 12:35:45,541 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 4938 transitions. Word has length 72 [2022-01-18 12:35:45,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:35:45,541 INFO L470 AbstractCegarLoop]: Abstraction has 1754 states and 4938 transitions. [2022-01-18 12:35:45,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:45,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 4938 transitions. [2022-01-18 12:35:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:35:45,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:35:45,545 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:35:45,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 12:35:45,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:45,770 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:35:45,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:35:45,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2123688381, now seen corresponding path program 14 times [2022-01-18 12:35:45,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:35:45,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373657145] [2022-01-18 12:35:45,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:35:45,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:35:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:45,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:35:45,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373657145] [2022-01-18 12:35:45,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373657145] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:35:45,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609479477] [2022-01-18 12:35:45,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:35:45,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:45,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:35:45,930 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:35:45,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 12:35:45,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:35:45,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:35:45,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:35:45,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:35:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:46,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:35:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:46,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609479477] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:35:46,783 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:35:46,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-01-18 12:35:46,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167526073] [2022-01-18 12:35:46,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:35:46,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:35:46,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:35:46,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:35:46,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:35:46,785 INFO L87 Difference]: Start difference. First operand 1754 states and 4938 transitions. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:48,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:35:48,427 INFO L93 Difference]: Finished difference Result 3103 states and 8374 transitions. [2022-01-18 12:35:48,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 12:35:48,427 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 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 [2022-01-18 12:35:48,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:35:48,438 INFO L225 Difference]: With dead ends: 3103 [2022-01-18 12:35:48,438 INFO L226 Difference]: Without dead ends: 3103 [2022-01-18 12:35:48,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=672, Invalid=2298, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 12:35:48,440 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 475 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:35:48,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 1143 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:35:48,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3103 states. [2022-01-18 12:35:48,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3103 to 1630. [2022-01-18 12:35:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 2.814610190300798) internal successors, (4585), 1629 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:48,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 4585 transitions. [2022-01-18 12:35:48,501 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 4585 transitions. Word has length 72 [2022-01-18 12:35:48,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:35:48,501 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 4585 transitions. [2022-01-18 12:35:48,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:48,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 4585 transitions. [2022-01-18 12:35:48,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:35:48,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:35:48,506 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:35:48,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 12:35:48,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:48,729 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:35:48,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:35:48,730 INFO L85 PathProgramCache]: Analyzing trace with hash -2100956123, now seen corresponding path program 15 times [2022-01-18 12:35:48,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:35:48,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274576416] [2022-01-18 12:35:48,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:35:48,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:35:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:48,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:35:48,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274576416] [2022-01-18 12:35:48,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274576416] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:35:48,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115176826] [2022-01-18 12:35:48,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:35:48,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:48,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:35:48,839 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:35:48,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 12:35:48,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 12:35:48,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:35:48,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:35:48,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:35:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:49,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:35:49,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:49,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115176826] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:35:49,651 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:35:49,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-01-18 12:35:49,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237451859] [2022-01-18 12:35:49,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:35:49,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:35:49,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:35:49,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:35:49,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:35:49,653 INFO L87 Difference]: Start difference. First operand 1630 states and 4585 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:50,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:35:50,372 INFO L93 Difference]: Finished difference Result 2343 states and 6535 transitions. [2022-01-18 12:35:50,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 12:35:50,372 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 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 [2022-01-18 12:35:50,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:35:50,376 INFO L225 Difference]: With dead ends: 2343 [2022-01-18 12:35:50,376 INFO L226 Difference]: Without dead ends: 2271 [2022-01-18 12:35:50,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=255, Invalid=935, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 12:35:50,377 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 220 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:35:50,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 1167 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:35:50,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2022-01-18 12:35:50,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 1674. [2022-01-18 12:35:50,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1673 states have (on average 2.8105200239091452) internal successors, (4702), 1673 states have internal predecessors, (4702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:50,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 4702 transitions. [2022-01-18 12:35:50,416 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 4702 transitions. Word has length 72 [2022-01-18 12:35:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:35:50,416 INFO L470 AbstractCegarLoop]: Abstraction has 1674 states and 4702 transitions. [2022-01-18 12:35:50,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:50,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 4702 transitions. [2022-01-18 12:35:50,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:35:50,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:35:50,421 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:35:50,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 12:35:50,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:50,644 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:35:50,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:35:50,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1872496129, now seen corresponding path program 16 times [2022-01-18 12:35:50,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:35:50,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236573406] [2022-01-18 12:35:50,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:35:50,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:35:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:50,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:35:50,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236573406] [2022-01-18 12:35:50,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236573406] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:35:50,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325095905] [2022-01-18 12:35:50,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:35:50,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:50,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:35:50,816 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:35:50,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 12:35:50,877 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:35:50,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:35:50,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:35:50,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:35:51,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:51,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:35:51,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:51,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325095905] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:35:51,582 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:35:51,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:35:51,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084565460] [2022-01-18 12:35:51,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:35:51,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:35:51,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:35:51,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:35:51,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:35:51,583 INFO L87 Difference]: Start difference. First operand 1674 states and 4702 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:52,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:35:52,752 INFO L93 Difference]: Finished difference Result 3521 states and 9599 transitions. [2022-01-18 12:35:52,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 12:35:52,753 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:35:52,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:35:52,758 INFO L225 Difference]: With dead ends: 3521 [2022-01-18 12:35:52,758 INFO L226 Difference]: Without dead ends: 3521 [2022-01-18 12:35:52,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=557, Invalid=1699, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 12:35:52,759 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 487 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:35:52,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 1281 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:35:52,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2022-01-18 12:35:52,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 1834. [2022-01-18 12:35:52,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 2.8532460447354064) internal successors, (5230), 1833 states have internal predecessors, (5230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:52,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 5230 transitions. [2022-01-18 12:35:52,803 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 5230 transitions. Word has length 72 [2022-01-18 12:35:52,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:35:52,804 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 5230 transitions. [2022-01-18 12:35:52,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:52,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 5230 transitions. [2022-01-18 12:35:52,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:35:52,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:35:52,810 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:35:52,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 12:35:53,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:53,023 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:35:53,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:35:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash 42894595, now seen corresponding path program 17 times [2022-01-18 12:35:53,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:35:53,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173061241] [2022-01-18 12:35:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:35:53,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:35:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:53,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:53,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:35:53,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173061241] [2022-01-18 12:35:53,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173061241] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:35:53,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364342671] [2022-01-18 12:35:53,161 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:35:53,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:53,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:35:53,163 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:35:53,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 12:35:53,225 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:35:53,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:35:53,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 12:35:53,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:35:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:53,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:35:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:53,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364342671] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:35:53,778 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:35:53,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 21 [2022-01-18 12:35:53,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596448109] [2022-01-18 12:35:53,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:35:53,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:35:53,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:35:53,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:35:53,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:35:53,780 INFO L87 Difference]: Start difference. First operand 1834 states and 5230 transitions. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:56,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:35:56,529 INFO L93 Difference]: Finished difference Result 3826 states and 10462 transitions. [2022-01-18 12:35:56,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 12:35:56,529 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 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 [2022-01-18 12:35:56,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:35:56,534 INFO L225 Difference]: With dead ends: 3826 [2022-01-18 12:35:56,535 INFO L226 Difference]: Without dead ends: 3778 [2022-01-18 12:35:56,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2098 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1139, Invalid=5023, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 12:35:56,537 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 619 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:35:56,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 1782 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:35:56,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2022-01-18 12:35:56,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 2006. [2022-01-18 12:35:56,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006 states, 2005 states have (on average 2.8663341645885287) internal successors, (5747), 2005 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:56,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 5747 transitions. [2022-01-18 12:35:56,581 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 5747 transitions. Word has length 72 [2022-01-18 12:35:56,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:35:56,581 INFO L470 AbstractCegarLoop]: Abstraction has 2006 states and 5747 transitions. [2022-01-18 12:35:56,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:56,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 5747 transitions. [2022-01-18 12:35:56,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:35:56,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:35:56,586 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:35:56,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 12:35:56,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:56,803 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:35:56,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:35:56,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1849763871, now seen corresponding path program 18 times [2022-01-18 12:35:56,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:35:56,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205278247] [2022-01-18 12:35:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:35:56,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:35:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:56,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:35:56,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205278247] [2022-01-18 12:35:56,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205278247] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:35:56,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134933035] [2022-01-18 12:35:56,934 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:35:56,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:56,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:35:56,935 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:35:56,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 12:35:57,016 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 12:35:57,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:35:57,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:35:57,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:35:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:57,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:35:57,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:57,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134933035] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:35:57,722 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:35:57,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-01-18 12:35:57,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813988608] [2022-01-18 12:35:57,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:35:57,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:35:57,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:35:57,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:35:57,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:35:57,723 INFO L87 Difference]: Start difference. First operand 2006 states and 5747 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:58,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:35:58,821 INFO L93 Difference]: Finished difference Result 3556 states and 10040 transitions. [2022-01-18 12:35:58,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 12:35:58,827 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2022-01-18 12:35:58,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:35:58,833 INFO L225 Difference]: With dead ends: 3556 [2022-01-18 12:35:58,833 INFO L226 Difference]: Without dead ends: 3472 [2022-01-18 12:35:58,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=442, Invalid=1450, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 12:35:58,834 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 364 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:35:58,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 826 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:35:58,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2022-01-18 12:35:58,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 2214. [2022-01-18 12:35:58,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 2213 states have (on average 2.8734749209218258) internal successors, (6359), 2213 states have internal predecessors, (6359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 6359 transitions. [2022-01-18 12:35:58,875 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 6359 transitions. Word has length 72 [2022-01-18 12:35:58,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:35:58,875 INFO L470 AbstractCegarLoop]: Abstraction has 2214 states and 6359 transitions. [2022-01-18 12:35:58,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:58,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 6359 transitions. [2022-01-18 12:35:58,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:35:58,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:35:58,880 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:35:58,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 12:35:59,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:59,089 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:35:59,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:35:59,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1491760117, now seen corresponding path program 19 times [2022-01-18 12:35:59,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:35:59,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088488586] [2022-01-18 12:35:59,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:35:59,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:35:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:59,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:35:59,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088488586] [2022-01-18 12:35:59,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088488586] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:35:59,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815031411] [2022-01-18 12:35:59,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:35:59,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:59,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:35:59,216 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:35:59,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 12:35:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:59,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:35:59,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:35:59,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:35:59,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:36:00,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:36:00,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815031411] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:36:00,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:36:00,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-01-18 12:36:00,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289177174] [2022-01-18 12:36:00,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:36:00,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:36:00,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:36:00,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:36:00,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:36:00,025 INFO L87 Difference]: Start difference. First operand 2214 states and 6359 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:36:00,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:36:00,449 INFO L93 Difference]: Finished difference Result 2847 states and 8105 transitions. [2022-01-18 12:36:00,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 12:36:00,449 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2022-01-18 12:36:00,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:36:00,453 INFO L225 Difference]: With dead ends: 2847 [2022-01-18 12:36:00,454 INFO L226 Difference]: Without dead ends: 2775 [2022-01-18 12:36:00,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2022-01-18 12:36:00,454 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 296 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:36:00,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 710 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:36:00,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2022-01-18 12:36:00,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2214. [2022-01-18 12:36:00,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 2213 states have (on average 2.869859918662449) internal successors, (6351), 2213 states have internal predecessors, (6351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:36:00,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 6351 transitions. [2022-01-18 12:36:00,488 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 6351 transitions. Word has length 72 [2022-01-18 12:36:00,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:36:00,488 INFO L470 AbstractCegarLoop]: Abstraction has 2214 states and 6351 transitions. [2022-01-18 12:36:00,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:36:00,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 6351 transitions. [2022-01-18 12:36:00,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:36:00,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:36:00,493 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:36:00,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 12:36:00,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-01-18 12:36:00,703 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:36:00,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:36:00,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2112399269, now seen corresponding path program 20 times [2022-01-18 12:36:00,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:36:00,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794298955] [2022-01-18 12:36:00,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:36:00,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:36:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:36:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:36:00,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:36:00,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794298955] [2022-01-18 12:36:00,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794298955] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:36:00,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109298313] [2022-01-18 12:36:00,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:36:00,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:36:00,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:36:00,859 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:36:00,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 12:36:00,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:36:00,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:36:00,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 12:36:00,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:36:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:36:01,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:36:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:36:01,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109298313] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:36:01,388 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:36:01,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 11] total 23 [2022-01-18 12:36:01,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203488660] [2022-01-18 12:36:01,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:36:01,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 12:36:01,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:36:01,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 12:36:01,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2022-01-18 12:36:01,389 INFO L87 Difference]: Start difference. First operand 2214 states and 6351 transitions. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:36:03,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:36:03,938 INFO L93 Difference]: Finished difference Result 5256 states and 14553 transitions. [2022-01-18 12:36:03,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-18 12:36:03,938 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 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 [2022-01-18 12:36:03,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:36:03,946 INFO L225 Difference]: With dead ends: 5256 [2022-01-18 12:36:03,946 INFO L226 Difference]: Without dead ends: 5154 [2022-01-18 12:36:03,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2298 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=901, Invalid=5741, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 12:36:03,947 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 630 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:36:03,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 2768 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 12:36:03,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5154 states. [2022-01-18 12:36:03,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5154 to 2362. [2022-01-18 12:36:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2361 states have (on average 2.9047013977128335) internal successors, (6858), 2361 states have internal predecessors, (6858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:36:04,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 6858 transitions. [2022-01-18 12:36:04,006 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 6858 transitions. Word has length 72 [2022-01-18 12:36:04,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:36:04,006 INFO L470 AbstractCegarLoop]: Abstraction has 2362 states and 6858 transitions. [2022-01-18 12:36:04,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:36:04,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 6858 transitions. [2022-01-18 12:36:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:36:04,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:36:04,012 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:36:04,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 12:36:04,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 12:36:04,234 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:36:04,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:36:04,234 INFO L85 PathProgramCache]: Analyzing trace with hash 934362475, now seen corresponding path program 21 times [2022-01-18 12:36:04,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:36:04,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992826880] [2022-01-18 12:36:04,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:36:04,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:36:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:36:04,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:36:04,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:36:04,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992826880] [2022-01-18 12:36:04,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992826880] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:36:04,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919503080] [2022-01-18 12:36:04,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:36:04,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:36:04,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:36:04,380 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:36:04,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 12:36:04,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 12:36:04,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:36:04,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:36:04,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:36:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:36:04,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:36:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:36:07,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919503080] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:36:07,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:36:07,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:36:07,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87043209] [2022-01-18 12:36:07,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:36:07,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:36:07,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:36:07,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:36:07,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:36:07,627 INFO L87 Difference]: Start difference. First operand 2362 states and 6858 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:36:09,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:36:09,158 INFO L93 Difference]: Finished difference Result 4397 states and 12309 transitions. [2022-01-18 12:36:09,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 12:36:09,159 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 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 [2022-01-18 12:36:09,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:36:09,168 INFO L225 Difference]: With dead ends: 4397 [2022-01-18 12:36:09,168 INFO L226 Difference]: Without dead ends: 4397 [2022-01-18 12:36:09,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=486, Invalid=1494, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 12:36:09,169 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 485 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:36:09,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 1274 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:36:09,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4397 states. [2022-01-18 12:36:09,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4397 to 2630. [2022-01-18 12:36:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2630 states, 2629 states have (on average 2.907189045264359) internal successors, (7643), 2629 states have internal predecessors, (7643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:36:09,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 7643 transitions. [2022-01-18 12:36:09,233 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 7643 transitions. Word has length 72 [2022-01-18 12:36:09,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:36:09,233 INFO L470 AbstractCegarLoop]: Abstraction has 2630 states and 7643 transitions. [2022-01-18 12:36:09,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:36:09,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 7643 transitions. [2022-01-18 12:36:09,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:36:09,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:36:09,239 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:36:09,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 12:36:09,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-18 12:36:09,462 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:36:09,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:36:09,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1604543435, now seen corresponding path program 22 times [2022-01-18 12:36:09,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:36:09,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705827254] [2022-01-18 12:36:09,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:36:09,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:36:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:36:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:36:09,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:36:09,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705827254] [2022-01-18 12:36:09,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705827254] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:36:09,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829274742] [2022-01-18 12:36:09,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:36:09,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:36:09,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:36:09,601 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:36:09,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 12:36:09,667 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:36:09,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:36:09,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:36:09,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:36:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:36:09,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:36:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:36:27,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829274742] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:36:27,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:36:27,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:36:27,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219892922] [2022-01-18 12:36:27,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:36:27,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:36:27,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:36:27,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:36:27,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:36:27,716 INFO L87 Difference]: Start difference. First operand 2630 states and 7643 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:36:29,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:36:29,182 INFO L93 Difference]: Finished difference Result 3511 states and 10098 transitions. [2022-01-18 12:36:29,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 12:36:29,183 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 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 [2022-01-18 12:36:29,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:36:29,188 INFO L225 Difference]: With dead ends: 3511 [2022-01-18 12:36:29,188 INFO L226 Difference]: Without dead ends: 3463 [2022-01-18 12:36:29,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:36:29,189 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 282 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:36:29,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 1012 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 12:36:29,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2022-01-18 12:36:29,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 2678. [2022-01-18 12:36:29,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2677 states have (on average 2.901382144191259) internal successors, (7767), 2677 states have internal predecessors, (7767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:36:29,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 7767 transitions. [2022-01-18 12:36:29,229 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 7767 transitions. Word has length 72 [2022-01-18 12:36:29,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:36:29,229 INFO L470 AbstractCegarLoop]: Abstraction has 2678 states and 7767 transitions. [2022-01-18 12:36:29,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:36:29,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 7767 transitions. [2022-01-18 12:36:29,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:36:29,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:36:29,235 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:36:29,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 12:36:29,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:36:29,443 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:36:29,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:36:29,444 INFO L85 PathProgramCache]: Analyzing trace with hash -664216311, now seen corresponding path program 23 times [2022-01-18 12:36:29,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:36:29,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051645232] [2022-01-18 12:36:29,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:36:29,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:36:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:36:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:36:29,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:36:29,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051645232] [2022-01-18 12:36:29,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051645232] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:36:29,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947671593] [2022-01-18 12:36:29,648 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:36:29,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:36:29,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:36:29,650 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:36:29,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 12:36:29,721 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 12:36:29,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:36:29,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:36:29,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:36:29,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:36:29,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:39:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:39:24,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947671593] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:39:24,462 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:39:24,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-01-18 12:39:24,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483727697] [2022-01-18 12:39:24,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:39:24,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:39:24,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:39:24,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:39:24,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:39:24,463 INFO L87 Difference]: Start difference. First operand 2678 states and 7767 transitions. Second operand has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:39:26,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:39:26,714 INFO L93 Difference]: Finished difference Result 4107 states and 11508 transitions. [2022-01-18 12:39:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 12:39:26,715 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:39:26,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:39:26,721 INFO L225 Difference]: With dead ends: 4107 [2022-01-18 12:39:26,721 INFO L226 Difference]: Without dead ends: 4107 [2022-01-18 12:39:26,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=447, Invalid=1445, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 12:39:26,722 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 428 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:39:26,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 1097 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 12:39:26,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2022-01-18 12:39:26,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 2822. [2022-01-18 12:39:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2822 states, 2821 states have (on average 2.900744416873449) internal successors, (8183), 2821 states have internal predecessors, (8183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:39:26,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 8183 transitions. [2022-01-18 12:39:26,763 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 8183 transitions. Word has length 72 [2022-01-18 12:39:26,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:39:26,763 INFO L470 AbstractCegarLoop]: Abstraction has 2822 states and 8183 transitions. [2022-01-18 12:39:26,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:39:26,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 8183 transitions. [2022-01-18 12:39:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:39:26,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:39:26,767 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:39:26,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 12:39:26,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 12:39:26,968 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:39:26,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:39:26,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1091845075, now seen corresponding path program 24 times [2022-01-18 12:39:26,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:39:26,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043865606] [2022-01-18 12:39:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:39:26,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:39:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:39:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:39:27,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:39:27,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043865606] [2022-01-18 12:39:27,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043865606] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:39:27,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580317194] [2022-01-18 12:39:27,090 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:39:27,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:39:27,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:39:27,092 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:39:27,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 12:39:27,168 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:39:27,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:39:27,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:39:27,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:39:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:39:27,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:39:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:39:54,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580317194] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:39:54,071 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:39:54,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-01-18 12:39:54,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175856263] [2022-01-18 12:39:54,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:39:54,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 12:39:54,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:39:54,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 12:39:54,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:39:54,072 INFO L87 Difference]: Start difference. First operand 2822 states and 8183 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:39:56,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:39:56,167 INFO L93 Difference]: Finished difference Result 4169 states and 11894 transitions. [2022-01-18 12:39:56,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 12:39:56,168 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2022-01-18 12:39:56,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:39:56,175 INFO L225 Difference]: With dead ends: 4169 [2022-01-18 12:39:56,175 INFO L226 Difference]: Without dead ends: 4121 [2022-01-18 12:39:56,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=528, Invalid=2022, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 12:39:56,176 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 468 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:39:56,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 959 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:39:56,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2022-01-18 12:39:56,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 2774. [2022-01-18 12:39:56,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2774 states, 2773 states have (on average 2.899026325279481) internal successors, (8039), 2773 states have internal predecessors, (8039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:39:56,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 8039 transitions. [2022-01-18 12:39:56,217 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 8039 transitions. Word has length 72 [2022-01-18 12:39:56,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:39:56,217 INFO L470 AbstractCegarLoop]: Abstraction has 2774 states and 8039 transitions. [2022-01-18 12:39:56,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:39:56,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 8039 transitions. [2022-01-18 12:39:56,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:39:56,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:39:56,221 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:39:56,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-01-18 12:39:56,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:39:56,422 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:39:56,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:39:56,422 INFO L85 PathProgramCache]: Analyzing trace with hash 2000622901, now seen corresponding path program 25 times [2022-01-18 12:39:56,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:39:56,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670823725] [2022-01-18 12:39:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:39:56,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:39:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:39:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:39:56,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:39:56,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670823725] [2022-01-18 12:39:56,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670823725] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:39:56,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615516856] [2022-01-18 12:39:56,512 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:39:56,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:39:56,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:39:56,516 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:39:56,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 12:39:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:39:56,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:39:56,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:39:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:39:56,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:40:14,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:40:14,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615516856] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:40:14,612 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:40:14,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-01-18 12:40:14,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118121992] [2022-01-18 12:40:14,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:40:14,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 12:40:14,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:40:14,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 12:40:14,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:40:14,613 INFO L87 Difference]: Start difference. First operand 2774 states and 8039 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:40:15,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:40:15,621 INFO L93 Difference]: Finished difference Result 3593 states and 10296 transitions. [2022-01-18 12:40:15,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 12:40:15,621 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2022-01-18 12:40:15,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:40:15,627 INFO L225 Difference]: With dead ends: 3593 [2022-01-18 12:40:15,627 INFO L226 Difference]: Without dead ends: 3521 [2022-01-18 12:40:15,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 12:40:15,628 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 245 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:40:15,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1046 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:40:15,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2022-01-18 12:40:15,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 2818. [2022-01-18 12:40:15,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2817 states have (on average 2.895278665246716) internal successors, (8156), 2817 states have internal predecessors, (8156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:40:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 8156 transitions. [2022-01-18 12:40:15,665 INFO L78 Accepts]: Start accepts. Automaton has 2818 states and 8156 transitions. Word has length 72 [2022-01-18 12:40:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:40:15,665 INFO L470 AbstractCegarLoop]: Abstraction has 2818 states and 8156 transitions. [2022-01-18 12:40:15,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:40:15,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2818 states and 8156 transitions. [2022-01-18 12:40:15,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:40:15,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:40:15,669 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:40:15,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-18 12:40:15,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-01-18 12:40:15,870 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:40:15,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:40:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1809397223, now seen corresponding path program 26 times [2022-01-18 12:40:15,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:40:15,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529465827] [2022-01-18 12:40:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:40:15,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:40:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:40:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:40:15,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:40:15,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529465827] [2022-01-18 12:40:15,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529465827] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:40:15,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727236380] [2022-01-18 12:40:15,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:40:15,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:40:15,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:40:15,984 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:40:15,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 12:40:16,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:40:16,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:40:16,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:40:16,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:40:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:40:16,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:40:17,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:40:17,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727236380] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:40:17,808 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:40:17,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:40:17,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812736292] [2022-01-18 12:40:17,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:40:17,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:40:17,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:40:17,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:40:17,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=261, Unknown=1, NotChecked=0, Total=342 [2022-01-18 12:40:17,809 INFO L87 Difference]: Start difference. First operand 2818 states and 8156 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:40:19,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:40:19,187 INFO L93 Difference]: Finished difference Result 4502 states and 12688 transitions. [2022-01-18 12:40:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 12:40:19,188 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:40:19,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:40:19,195 INFO L225 Difference]: With dead ends: 4502 [2022-01-18 12:40:19,195 INFO L226 Difference]: Without dead ends: 4502 [2022-01-18 12:40:19,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 159 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=492, Invalid=1577, Unknown=1, NotChecked=0, Total=2070 [2022-01-18 12:40:19,196 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 521 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:40:19,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 1201 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 425 Invalid, 0 Unknown, 62 Unchecked, 0.4s Time] [2022-01-18 12:40:19,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4502 states. [2022-01-18 12:40:19,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4502 to 2986. [2022-01-18 12:40:19,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2986 states, 2985 states have (on average 2.9192629815745392) internal successors, (8714), 2985 states have internal predecessors, (8714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:40:19,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2986 states to 2986 states and 8714 transitions. [2022-01-18 12:40:19,243 INFO L78 Accepts]: Start accepts. Automaton has 2986 states and 8714 transitions. Word has length 72 [2022-01-18 12:40:19,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:40:19,243 INFO L470 AbstractCegarLoop]: Abstraction has 2986 states and 8714 transitions. [2022-01-18 12:40:19,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:40:19,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2986 states and 8714 transitions. [2022-01-18 12:40:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:40:19,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:40:19,247 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:40:19,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 12:40:19,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:40:19,448 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:40:19,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:40:19,448 INFO L85 PathProgramCache]: Analyzing trace with hash -53335837, now seen corresponding path program 27 times [2022-01-18 12:40:19,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:40:19,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766193765] [2022-01-18 12:40:19,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:40:19,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:40:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:40:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:40:19,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:40:19,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766193765] [2022-01-18 12:40:19,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766193765] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:40:19,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687517051] [2022-01-18 12:40:19,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:40:19,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:40:19,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:40:19,566 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:40:19,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 12:40:19,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:40:19,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:40:19,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:40:19,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:40:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:40:19,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:40:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:40:42,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687517051] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:40:42,203 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:40:42,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-01-18 12:40:42,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310963880] [2022-01-18 12:40:42,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:40:42,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 12:40:42,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:40:42,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 12:40:42,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:40:42,204 INFO L87 Difference]: Start difference. First operand 2986 states and 8714 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:40:44,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:40:44,377 INFO L93 Difference]: Finished difference Result 4359 states and 12480 transitions. [2022-01-18 12:40:44,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 12:40:44,378 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2022-01-18 12:40:44,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:40:44,385 INFO L225 Difference]: With dead ends: 4359 [2022-01-18 12:40:44,385 INFO L226 Difference]: Without dead ends: 4311 [2022-01-18 12:40:44,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=573, Invalid=2183, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 12:40:44,386 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 522 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:40:44,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 1276 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:40:44,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2022-01-18 12:40:44,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 2946. [2022-01-18 12:40:44,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2945 states have (on average 2.903904923599321) internal successors, (8552), 2945 states have internal predecessors, (8552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:40:44,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 8552 transitions. [2022-01-18 12:40:44,436 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 8552 transitions. Word has length 72 [2022-01-18 12:40:44,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:40:44,436 INFO L470 AbstractCegarLoop]: Abstraction has 2946 states and 8552 transitions. [2022-01-18 12:40:44,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:40:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 8552 transitions. [2022-01-18 12:40:44,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:40:44,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:40:44,442 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:40:44,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 12:40:44,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:40:44,651 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:40:44,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:40:44,652 INFO L85 PathProgramCache]: Analyzing trace with hash 855441989, now seen corresponding path program 28 times [2022-01-18 12:40:44,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:40:44,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510018032] [2022-01-18 12:40:44,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:40:44,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:40:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:40:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:40:44,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:40:44,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510018032] [2022-01-18 12:40:44,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510018032] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:40:44,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170886802] [2022-01-18 12:40:44,793 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:40:44,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:40:44,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:40:44,794 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:40:44,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 12:40:44,861 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:40:44,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:40:44,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:40:44,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:40:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:40:45,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:41:07,789 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:41:07,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170886802] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:41:07,789 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:41:07,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:41:07,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153243804] [2022-01-18 12:41:07,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:41:07,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:41:07,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:41:07,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:41:07,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:41:07,790 INFO L87 Difference]: Start difference. First operand 2946 states and 8552 transitions. Second operand has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:41:09,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:41:09,908 INFO L93 Difference]: Finished difference Result 4673 states and 13300 transitions. [2022-01-18 12:41:09,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 12:41:09,908 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 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 [2022-01-18 12:41:09,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:41:09,916 INFO L225 Difference]: With dead ends: 4673 [2022-01-18 12:41:09,916 INFO L226 Difference]: Without dead ends: 4601 [2022-01-18 12:41:09,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=412, Invalid=1568, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 12:41:09,916 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 368 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:41:09,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 1125 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:41:09,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2022-01-18 12:41:09,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 3102. [2022-01-18 12:41:09,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3102 states, 3101 states have (on average 2.9026120606256045) internal successors, (9001), 3101 states have internal predecessors, (9001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:41:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3102 states to 3102 states and 9001 transitions. [2022-01-18 12:41:09,966 INFO L78 Accepts]: Start accepts. Automaton has 3102 states and 9001 transitions. Word has length 72 [2022-01-18 12:41:09,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:41:09,967 INFO L470 AbstractCegarLoop]: Abstraction has 3102 states and 9001 transitions. [2022-01-18 12:41:09,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:41:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3102 states and 9001 transitions. [2022-01-18 12:41:09,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:41:09,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:41:09,971 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:41:09,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-18 12:41:10,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:41:10,172 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:41:10,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:41:10,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1488314149, now seen corresponding path program 29 times [2022-01-18 12:41:10,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:41:10,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589220218] [2022-01-18 12:41:10,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:41:10,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:41:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:41:10,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:41:10,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:41:10,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589220218] [2022-01-18 12:41:10,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589220218] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:41:10,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173505521] [2022-01-18 12:41:10,286 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:41:10,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:41:10,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:41:10,288 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:41:10,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 12:41:10,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:41:10,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:41:10,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:41:10,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:41:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:41:10,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2022-01-18 12:48:39,864 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 12:48:39,864 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 12:48:40,872 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2022-01-18 12:48:40,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2022-01-18 12:48:40,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 12:48:41,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-01-18 12:48:41,073 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Not enough levels on assertion stack at de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:306) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.restore(UndoableWrapperScript.java:87) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:260) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:1067) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:115) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:496) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:247) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-18 12:48:41,078 INFO L158 Benchmark]: Toolchain (without parser) took 860656.62ms. Allocated memory was 358.6MB in the beginning and 583.0MB in the end (delta: 224.4MB). Free memory was 304.8MB in the beginning and 499.8MB in the end (delta: -195.1MB). Peak memory consumption was 325.5MB. Max. memory is 16.0GB. [2022-01-18 12:48:41,078 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 358.6MB. Free memory is still 322.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 12:48:41,078 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.17ms. Allocated memory is still 358.6MB. Free memory was 304.6MB in the beginning and 332.3MB in the end (delta: -27.7MB). Peak memory consumption was 17.0MB. Max. memory is 16.0GB. [2022-01-18 12:48:41,078 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.31ms. Allocated memory is still 358.6MB. Free memory was 332.3MB in the beginning and 330.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 12:48:41,078 INFO L158 Benchmark]: Boogie Preprocessor took 31.72ms. Allocated memory is still 358.6MB. Free memory was 330.5MB in the beginning and 329.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 12:48:41,079 INFO L158 Benchmark]: RCFGBuilder took 389.49ms. Allocated memory is still 358.6MB. Free memory was 329.4MB in the beginning and 316.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 12:48:41,079 INFO L158 Benchmark]: TraceAbstraction took 859925.82ms. Allocated memory was 358.6MB in the beginning and 583.0MB in the end (delta: 224.4MB). Free memory was 316.4MB in the beginning and 499.8MB in the end (delta: -183.4MB). Peak memory consumption was 337.9MB. Max. memory is 16.0GB. [2022-01-18 12:48:41,080 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 358.6MB. Free memory is still 322.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 269.17ms. Allocated memory is still 358.6MB. Free memory was 304.6MB in the beginning and 332.3MB in the end (delta: -27.7MB). Peak memory consumption was 17.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.31ms. Allocated memory is still 358.6MB. Free memory was 332.3MB in the beginning and 330.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.72ms. Allocated memory is still 358.6MB. Free memory was 330.5MB in the beginning and 329.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 389.49ms. Allocated memory is still 358.6MB. Free memory was 329.4MB in the beginning and 316.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 859925.82ms. Allocated memory was 358.6MB in the beginning and 583.0MB in the end (delta: 224.4MB). Free memory was 316.4MB in the beginning and 499.8MB in the end (delta: -183.4MB). Peak memory consumption was 337.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Not enough levels on assertion stack de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Not enough levels on assertion stack: de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:306) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown