/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-figure3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 02:20:11,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 02:20:11,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 02:20:11,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-10 02:20:11,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-10 02:20:11,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-10 02:20:11,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-10 02:20:11,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-10 02:20:11,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-10 02:20:11,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-10 02:20:11,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-10 02:20:11,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-10 02:20:11,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-10 02:20:11,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-10 02:20:11,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-10 02:20:11,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-10 02:20:11,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-10 02:20:11,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-10 02:20:11,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-10 02:20:11,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-10 02:20:11,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-10 02:20:11,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-10 02:20:11,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-10 02:20:11,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-10 02:20:11,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-10 02:20:11,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-10 02:20:11,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-10 02:20:11,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-10 02:20:11,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-10 02:20:11,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-10 02:20:11,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-10 02:20:11,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-10 02:20:11,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-10 02:20:11,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-10 02:20:11,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-10 02:20:11,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-10 02:20:11,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-10 02:20:11,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-10 02:20:11,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 02:20:11,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 02:20:11,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 02:20:11,746 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-MCRwithDepranks-BasicCegarLoop.epf [2022-02-10 02:20:11,776 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 02:20:11,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 02:20:11,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 02:20:11,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 02:20:11,778 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 02:20:11,778 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 02:20:11,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 02:20:11,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 02:20:11,779 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 02:20:11,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 02:20:11,780 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 02:20:11,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 02:20:11,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 02:20:11,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 02:20:11,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 02:20:11,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 02:20:11,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 02:20:11,781 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 02:20:11,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 02:20:11,781 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 02:20:11,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 02:20:11,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 02:20:11,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 02:20:11,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 02:20:11,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 02:20:11,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 02:20:11,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 02:20:11,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 02:20:11,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 02:20:11,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 02:20:11,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 02:20:11,784 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 02:20:11,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 02:20:11,785 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-10 02:20:11,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 02:20:12,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 02:20:12,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 02:20:12,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 02:20:12,055 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 02:20:12,055 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 02:20:12,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2022-02-10 02:20:12,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a222c65e8/adfaa0c63c284461b3b15352f9574376/FLAG74b0ff016 [2022-02-10 02:20:12,539 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 02:20:12,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2022-02-10 02:20:12,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a222c65e8/adfaa0c63c284461b3b15352f9574376/FLAG74b0ff016 [2022-02-10 02:20:12,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a222c65e8/adfaa0c63c284461b3b15352f9574376 [2022-02-10 02:20:12,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 02:20:12,567 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 02:20:12,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 02:20:12,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 02:20:12,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 02:20:12,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 02:20:12" (1/1) ... [2022-02-10 02:20:12,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b61ec20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:20:12, skipping insertion in model container [2022-02-10 02:20:12,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 02:20:12" (1/1) ... [2022-02-10 02:20:12,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 02:20:12,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 02:20:12,815 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-figure3.wvr.c[2121,2134] [2022-02-10 02:20:12,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 02:20:12,825 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 02:20:12,853 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-figure3.wvr.c[2121,2134] [2022-02-10 02:20:12,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 02:20:12,870 INFO L208 MainTranslator]: Completed translation [2022-02-10 02:20:12,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:20:12 WrapperNode [2022-02-10 02:20:12,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 02:20:12,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 02:20:12,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 02:20:12,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 02:20:12,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:20:12" (1/1) ... [2022-02-10 02:20:12,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:20:12" (1/1) ... [2022-02-10 02:20:12,906 INFO L137 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2022-02-10 02:20:12,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 02:20:12,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 02:20:12,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 02:20:12,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 02:20:12,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:20:12" (1/1) ... [2022-02-10 02:20:12,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:20:12" (1/1) ... [2022-02-10 02:20:12,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:20:12" (1/1) ... [2022-02-10 02:20:12,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:20:12" (1/1) ... [2022-02-10 02:20:12,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:20:12" (1/1) ... [2022-02-10 02:20:12,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:20:12" (1/1) ... [2022-02-10 02:20:12,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:20:12" (1/1) ... [2022-02-10 02:20:12,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 02:20:12,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 02:20:12,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 02:20:12,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 02:20:12,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:20:12" (1/1) ... [2022-02-10 02:20:12,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 02:20:12,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:20:12,981 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) [2022-02-10 02:20:13,001 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 [2022-02-10 02:20:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 02:20:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 02:20:13,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 02:20:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 02:20:13,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 02:20:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 02:20:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 02:20:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 02:20:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-10 02:20:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-10 02:20:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 02:20:13,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 02:20:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-10 02:20:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 02:20:13,019 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 02:20:13,082 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 02:20:13,083 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 02:20:13,249 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 02:20:13,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 02:20:13,270 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-10 02:20:13,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 02:20:13 BoogieIcfgContainer [2022-02-10 02:20:13,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 02:20:13,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 02:20:13,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 02:20:13,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 02:20:13,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 02:20:12" (1/3) ... [2022-02-10 02:20:13,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fbed949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 02:20:13, skipping insertion in model container [2022-02-10 02:20:13,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:20:12" (2/3) ... [2022-02-10 02:20:13,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fbed949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 02:20:13, skipping insertion in model container [2022-02-10 02:20:13,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 02:20:13" (3/3) ... [2022-02-10 02:20:13,278 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2022-02-10 02:20:13,281 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 02:20:13,281 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 02:20:13,281 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 02:20:13,282 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 02:20:13,307 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,307 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,308 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,308 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,309 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,309 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,311 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,311 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,311 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,311 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,311 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,311 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,312 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,312 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,312 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,312 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,317 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,317 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,317 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,321 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,321 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,321 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,321 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:20:13,327 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 02:20:13,370 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 02:20:13,376 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, mLazyFiniteAutomaton=false, 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 [2022-02-10 02:20:13,376 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 02:20:13,394 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 87 transitions, 190 flow [2022-02-10 02:20:13,484 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 447 states, 446 states have (on average 2.6412556053811658) internal successors, (1178), 446 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:20:45,113 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1643764 transitions and produced 657295 states. [2022-02-10 02:20:52,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 657295 states, 536901 states have (on average 1.3279058895401572) internal successors, (712954), 657294 states have internal predecessors, (712954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:20:53,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-10 02:20:53,646 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:20:53,647 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] [2022-02-10 02:20:53,647 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:20:53,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:20:53,651 INFO L85 PathProgramCache]: Analyzing trace with hash 912408516, now seen corresponding path program 1 times [2022-02-10 02:20:53,659 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:20:53,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320494641] [2022-02-10 02:20:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:20:53,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:20:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:20:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:20:54,045 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:20:54,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320494641] [2022-02-10 02:20:54,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320494641] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:20:54,046 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:20:54,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 02:20:54,049 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328251996] [2022-02-10 02:20:54,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:20:54,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:20:54,052 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:20:54,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:20:54,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:21:01,877 INFO L87 Difference]: Start difference. First operand has 657295 states, 536901 states have (on average 1.3279058895401572) internal successors, (712954), 657294 states have internal predecessors, (712954), 0 states have call successors, (0), 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 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) [2022-02-10 02:21:07,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:21:07,809 INFO L93 Difference]: Finished difference Result 205683 states and 227908 transitions. [2022-02-10 02:21:07,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:21:07,811 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 [2022-02-10 02:21:07,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:21:07,960 INFO L225 Difference]: With dead ends: 205683 [2022-02-10 02:21:07,961 INFO L226 Difference]: Without dead ends: 25424 [2022-02-10 02:21:07,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:21:07,965 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 10 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:21:07,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 216 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:21:08,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25424 states. [2022-02-10 02:21:08,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25424 to 104. [2022-02-10 02:21:08,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.1359223300970873) internal successors, (117), 103 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) [2022-02-10 02:21:08,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions. [2022-02-10 02:21:08,248 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 60 [2022-02-10 02:21:08,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:21:08,249 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions. [2022-02-10 02:21:08,249 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) [2022-02-10 02:21:08,249 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions. [2022-02-10 02:21:08,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 02:21:08,252 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:21:08,252 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] [2022-02-10 02:21:08,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 02:21:08,253 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:21:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:21:08,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1680698212, now seen corresponding path program 1 times [2022-02-10 02:21:08,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:21:08,254 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756674343] [2022-02-10 02:21:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:21:08,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:21:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:08,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:21:08,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756674343] [2022-02-10 02:21:08,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756674343] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:21:08,375 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:21:08,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 02:21:08,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159220970] [2022-02-10 02:21:08,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:21:08,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:21:08,377 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:21:08,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:21:08,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:21:08,378 INFO L87 Difference]: Start difference. First operand 104 states and 117 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) [2022-02-10 02:21:08,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:21:08,419 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2022-02-10 02:21:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 02:21:08,419 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 [2022-02-10 02:21:08,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:21:08,420 INFO L225 Difference]: With dead ends: 108 [2022-02-10 02:21:08,420 INFO L226 Difference]: Without dead ends: 107 [2022-02-10 02:21:08,421 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 [2022-02-10 02:21:08,422 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 11 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:21:08,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 127 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:21:08,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-02-10 02:21:08,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2022-02-10 02:21:08,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.1274509803921569) internal successors, (115), 102 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:08,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2022-02-10 02:21:08,426 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 65 [2022-02-10 02:21:08,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:21:08,427 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2022-02-10 02:21:08,427 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) [2022-02-10 02:21:08,427 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2022-02-10 02:21:08,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 02:21:08,428 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:21:08,428 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] [2022-02-10 02:21:08,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 02:21:08,429 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:21:08,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:21:08,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1466147496, now seen corresponding path program 2 times [2022-02-10 02:21:08,430 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:21:08,430 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230728332] [2022-02-10 02:21:08,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:21:08,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:21:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:08,526 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:21:08,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230728332] [2022-02-10 02:21:08,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230728332] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:21:08,526 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:21:08,526 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 02:21:08,527 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698600174] [2022-02-10 02:21:08,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:21:08,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 02:21:08,527 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:21:08,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 02:21:08,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:21:08,528 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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) [2022-02-10 02:21:08,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:21:08,591 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2022-02-10 02:21:08,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 02:21:08,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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 [2022-02-10 02:21:08,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:21:08,593 INFO L225 Difference]: With dead ends: 131 [2022-02-10 02:21:08,593 INFO L226 Difference]: Without dead ends: 131 [2022-02-10 02:21:08,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:21:08,594 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 43 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:21:08,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 287 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:21:08,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-02-10 02:21:08,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 105. [2022-02-10 02:21:08,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.125) internal successors, (117), 104 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) [2022-02-10 02:21:08,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2022-02-10 02:21:08,600 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 65 [2022-02-10 02:21:08,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:21:08,600 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2022-02-10 02:21:08,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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) [2022-02-10 02:21:08,600 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2022-02-10 02:21:08,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 02:21:08,601 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:21:08,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:21:08,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 02:21:08,602 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:21:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:21:08,603 INFO L85 PathProgramCache]: Analyzing trace with hash -766845088, now seen corresponding path program 1 times [2022-02-10 02:21:08,603 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:21:08,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926465059] [2022-02-10 02:21:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:21:08,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:21:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:08,715 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:21:08,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926465059] [2022-02-10 02:21:08,716 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926465059] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:21:08,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838448852] [2022-02-10 02:21:08,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:21:08,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:08,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:21:08,719 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) [2022-02-10 02:21:08,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 02:21:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:08,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:21:08,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:21:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:21:09,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-10 02:21:09,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838448852] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:21:09,050 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-10 02:21:09,050 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 7 [2022-02-10 02:21:09,050 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659106360] [2022-02-10 02:21:09,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:21:09,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 02:21:09,051 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:21:09,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 02:21:09,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:21:09,052 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:09,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:21:09,107 INFO L93 Difference]: Finished difference Result 197 states and 222 transitions. [2022-02-10 02:21:09,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:21:09,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-02-10 02:21:09,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:21:09,108 INFO L225 Difference]: With dead ends: 197 [2022-02-10 02:21:09,108 INFO L226 Difference]: Without dead ends: 165 [2022-02-10 02:21:09,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:21:09,110 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 36 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:21:09,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 315 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:21:09,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-02-10 02:21:09,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 140. [2022-02-10 02:21:09,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.158273381294964) internal successors, (161), 139 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 161 transitions. [2022-02-10 02:21:09,115 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 161 transitions. Word has length 70 [2022-02-10 02:21:09,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:21:09,115 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 161 transitions. [2022-02-10 02:21:09,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:09,115 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 161 transitions. [2022-02-10 02:21:09,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 02:21:09,116 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:21:09,116 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:21:09,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-10 02:21:09,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:09,332 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:21:09,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:21:09,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1918282112, now seen corresponding path program 2 times [2022-02-10 02:21:09,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:21:09,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278509966] [2022-02-10 02:21:09,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:21:09,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:21:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:09,531 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:09,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:21:09,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278509966] [2022-02-10 02:21:09,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278509966] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:21:09,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777359728] [2022-02-10 02:21:09,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:21:09,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:09,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:21:09,534 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) [2022-02-10 02:21:09,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 02:21:09,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:21:09,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:21:09,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:21:09,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:21:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:10,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:21:10,449 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:10,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777359728] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:21:10,450 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:21:10,450 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 02:21:10,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954711620] [2022-02-10 02:21:10,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:21:10,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:21:10,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:21:10,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:21:10,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:21:10,452 INFO L87 Difference]: Start difference. First operand 140 states and 161 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:11,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:21:11,928 INFO L93 Difference]: Finished difference Result 322 states and 381 transitions. [2022-02-10 02:21:11,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-10 02:21:11,929 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-10 02:21:11,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:21:11,930 INFO L225 Difference]: With dead ends: 322 [2022-02-10 02:21:11,930 INFO L226 Difference]: Without dead ends: 320 [2022-02-10 02:21:11,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=430, Invalid=2120, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 02:21:11,932 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 195 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:21:11,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 589 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:21:11,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-02-10 02:21:11,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 186. [2022-02-10 02:21:11,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.2162162162162162) internal successors, (225), 185 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 225 transitions. [2022-02-10 02:21:11,939 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 225 transitions. Word has length 75 [2022-02-10 02:21:11,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:21:11,940 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 225 transitions. [2022-02-10 02:21:11,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 225 transitions. [2022-02-10 02:21:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 02:21:11,941 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:21:11,941 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:21:11,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 02:21:12,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:12,160 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:21:12,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:21:12,161 INFO L85 PathProgramCache]: Analyzing trace with hash 19322932, now seen corresponding path program 3 times [2022-02-10 02:21:12,161 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:21:12,161 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604710023] [2022-02-10 02:21:12,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:21:12,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:21:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:12,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:12,394 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:21:12,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604710023] [2022-02-10 02:21:12,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604710023] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:21:12,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609549467] [2022-02-10 02:21:12,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:21:12,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:12,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:21:12,398 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) [2022-02-10 02:21:12,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 02:21:12,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:21:12,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:21:12,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:21:12,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:21:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:12,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:21:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:13,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609549467] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:21:13,055 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:21:13,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2022-02-10 02:21:13,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321492833] [2022-02-10 02:21:13,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:21:13,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:21:13,056 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:21:13,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:21:13,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:21:13,057 INFO L87 Difference]: Start difference. First operand 186 states and 225 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:14,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:21:14,786 INFO L93 Difference]: Finished difference Result 359 states and 441 transitions. [2022-02-10 02:21:14,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-10 02:21:14,787 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 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 75 [2022-02-10 02:21:14,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:21:14,788 INFO L225 Difference]: With dead ends: 359 [2022-02-10 02:21:14,789 INFO L226 Difference]: Without dead ends: 353 [2022-02-10 02:21:14,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=565, Invalid=2741, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 02:21:14,790 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 114 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:21:14,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 936 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:21:14,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-02-10 02:21:14,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 247. [2022-02-10 02:21:14,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.2398373983739837) internal successors, (305), 246 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:14,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 305 transitions. [2022-02-10 02:21:14,797 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 305 transitions. Word has length 75 [2022-02-10 02:21:14,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:21:14,798 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 305 transitions. [2022-02-10 02:21:14,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:14,798 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 305 transitions. [2022-02-10 02:21:14,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 02:21:14,799 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:21:14,799 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:21:14,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 02:21:15,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:15,016 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:21:15,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:21:15,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1774563226, now seen corresponding path program 4 times [2022-02-10 02:21:15,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:21:15,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356878350] [2022-02-10 02:21:15,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:21:15,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:21:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:15,175 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:21:15,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356878350] [2022-02-10 02:21:15,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356878350] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:21:15,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745066275] [2022-02-10 02:21:15,176 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:21:15,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:15,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:21:15,180 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) [2022-02-10 02:21:15,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 02:21:15,248 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:21:15,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:21:15,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:21:15,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:21:15,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:15,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:21:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:15,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745066275] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:21:15,685 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:21:15,686 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 02:21:15,686 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271321134] [2022-02-10 02:21:15,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:21:15,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:21:15,687 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:21:15,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:21:15,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:21:15,688 INFO L87 Difference]: Start difference. First operand 247 states and 305 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) [2022-02-10 02:21:16,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:21:16,821 INFO L93 Difference]: Finished difference Result 442 states and 540 transitions. [2022-02-10 02:21:16,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-10 02:21:16,821 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 75 [2022-02-10 02:21:16,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:21:16,823 INFO L225 Difference]: With dead ends: 442 [2022-02-10 02:21:16,823 INFO L226 Difference]: Without dead ends: 441 [2022-02-10 02:21:16,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=500, Invalid=2470, Unknown=0, NotChecked=0, Total=2970 [2022-02-10 02:21:16,825 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 258 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:21:16,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 655 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:21:16,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-02-10 02:21:16,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 259. [2022-02-10 02:21:16,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.244186046511628) internal successors, (321), 258 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:16,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 321 transitions. [2022-02-10 02:21:16,831 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 321 transitions. Word has length 75 [2022-02-10 02:21:16,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:21:16,831 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 321 transitions. [2022-02-10 02:21:16,831 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) [2022-02-10 02:21:16,832 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 321 transitions. [2022-02-10 02:21:16,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 02:21:16,832 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:21:16,832 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:21:16,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 02:21:17,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:17,056 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:21:17,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:21:17,056 INFO L85 PathProgramCache]: Analyzing trace with hash -582799026, now seen corresponding path program 5 times [2022-02-10 02:21:17,056 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:21:17,056 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243154691] [2022-02-10 02:21:17,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:21:17,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:21:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:17,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:21:17,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243154691] [2022-02-10 02:21:17,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243154691] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:21:17,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156541029] [2022-02-10 02:21:17,172 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:21:17,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:17,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:21:17,176 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) [2022-02-10 02:21:17,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 02:21:17,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:21:17,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:21:17,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:21:17,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:21:17,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:17,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:21:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:17,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156541029] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:21:17,775 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:21:17,775 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-02-10 02:21:17,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567713043] [2022-02-10 02:21:17,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:21:17,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:21:17,776 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:21:17,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:21:17,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:21:17,777 INFO L87 Difference]: Start difference. First operand 259 states and 321 transitions. Second operand has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 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) [2022-02-10 02:21:18,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:21:18,928 INFO L93 Difference]: Finished difference Result 478 states and 586 transitions. [2022-02-10 02:21:18,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-10 02:21:18,930 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 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 75 [2022-02-10 02:21:18,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:21:18,931 INFO L225 Difference]: With dead ends: 478 [2022-02-10 02:21:18,931 INFO L226 Difference]: Without dead ends: 472 [2022-02-10 02:21:18,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=578, Invalid=2284, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 02:21:18,933 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 348 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:21:18,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 1138 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:21:18,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-02-10 02:21:18,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 276. [2022-02-10 02:21:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.2545454545454546) internal successors, (345), 275 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:18,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 345 transitions. [2022-02-10 02:21:18,940 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 345 transitions. Word has length 75 [2022-02-10 02:21:18,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:21:18,941 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 345 transitions. [2022-02-10 02:21:18,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 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) [2022-02-10 02:21:18,941 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 345 transitions. [2022-02-10 02:21:18,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 02:21:18,942 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:21:18,942 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:21:18,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 02:21:19,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:19,158 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:21:19,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:21:19,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1396772198, now seen corresponding path program 6 times [2022-02-10 02:21:19,159 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:21:19,159 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424272822] [2022-02-10 02:21:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:21:19,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:21:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:19,292 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:21:19,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424272822] [2022-02-10 02:21:19,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424272822] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:21:19,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177428031] [2022-02-10 02:21:19,292 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:21:19,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:19,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:21:19,293 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) [2022-02-10 02:21:19,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 02:21:19,353 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:21:19,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:21:19,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:21:19,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:21:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:19,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:21:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:19,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177428031] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:21:19,684 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:21:19,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-02-10 02:21:19,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582567641] [2022-02-10 02:21:19,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:21:19,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:21:19,685 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:21:19,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:21:19,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:21:19,685 INFO L87 Difference]: Start difference. First operand 276 states and 345 transitions. Second operand has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 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) [2022-02-10 02:21:20,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:21:20,371 INFO L93 Difference]: Finished difference Result 398 states and 495 transitions. [2022-02-10 02:21:20,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 02:21:20,375 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 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 75 [2022-02-10 02:21:20,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:21:20,377 INFO L225 Difference]: With dead ends: 398 [2022-02-10 02:21:20,377 INFO L226 Difference]: Without dead ends: 398 [2022-02-10 02:21:20,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=424, Invalid=1832, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 02:21:20,378 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 142 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:21:20,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 653 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:21:20,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-02-10 02:21:20,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 277. [2022-02-10 02:21:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.25) internal successors, (345), 276 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 345 transitions. [2022-02-10 02:21:20,384 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 345 transitions. Word has length 75 [2022-02-10 02:21:20,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:21:20,384 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 345 transitions. [2022-02-10 02:21:20,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 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) [2022-02-10 02:21:20,384 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 345 transitions. [2022-02-10 02:21:20,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-10 02:21:20,385 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:21:20,385 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:21:20,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 02:21:20,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:20,608 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:21:20,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:21:20,609 INFO L85 PathProgramCache]: Analyzing trace with hash -181239356, now seen corresponding path program 7 times [2022-02-10 02:21:20,609 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:21:20,609 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576862392] [2022-02-10 02:21:20,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:21:20,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:21:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:20,739 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:21:20,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576862392] [2022-02-10 02:21:20,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576862392] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:21:20,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301880399] [2022-02-10 02:21:20,740 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:21:20,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:20,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:21:20,741 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) [2022-02-10 02:21:20,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 02:21:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:20,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 02:21:20,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:21:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:21:20,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:21:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:21:21,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301880399] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:21:21,176 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:21:21,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2022-02-10 02:21:21,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124395798] [2022-02-10 02:21:21,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:21:21,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:21:21,177 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:21:21,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:21:21,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:21:21,177 INFO L87 Difference]: Start difference. First operand 277 states and 345 transitions. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:21,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:21:21,280 INFO L93 Difference]: Finished difference Result 525 states and 657 transitions. [2022-02-10 02:21:21,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 02:21:21,280 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 0 states have call successors, (0), 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 80 [2022-02-10 02:21:21,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:21:21,281 INFO L225 Difference]: With dead ends: 525 [2022-02-10 02:21:21,282 INFO L226 Difference]: Without dead ends: 486 [2022-02-10 02:21:21,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:21:21,282 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 156 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:21:21,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 610 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:21:21,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-02-10 02:21:21,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 379. [2022-02-10 02:21:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.2804232804232805) internal successors, (484), 378 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 484 transitions. [2022-02-10 02:21:21,289 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 484 transitions. Word has length 80 [2022-02-10 02:21:21,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:21:21,289 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 484 transitions. [2022-02-10 02:21:21,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:21,289 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 484 transitions. [2022-02-10 02:21:21,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 02:21:21,290 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:21:21,290 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:21:21,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 02:21:21,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:21,510 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:21:21,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:21:21,511 INFO L85 PathProgramCache]: Analyzing trace with hash 636456216, now seen corresponding path program 8 times [2022-02-10 02:21:21,511 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:21:21,511 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744847459] [2022-02-10 02:21:21,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:21:21,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:21:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:21,846 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:21:21,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744847459] [2022-02-10 02:21:21,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744847459] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:21:21,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610973937] [2022-02-10 02:21:21,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:21:21,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:21,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:21:21,848 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) [2022-02-10 02:21:21,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 02:21:21,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:21:21,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:21:21,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:21:21,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:21:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:22,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:21:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:22,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610973937] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:21:22,636 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:21:22,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 33 [2022-02-10 02:21:22,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013767097] [2022-02-10 02:21:22,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:21:22,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 02:21:22,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:21:22,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 02:21:22,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:21:22,639 INFO L87 Difference]: Start difference. First operand 379 states and 484 transitions. Second operand has 33 states, 33 states have (on average 4.03030303030303) internal successors, (133), 33 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:27,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:21:27,497 INFO L93 Difference]: Finished difference Result 773 states and 970 transitions. [2022-02-10 02:21:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 02:21:27,498 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.03030303030303) internal successors, (133), 33 states have internal predecessors, (133), 0 states have call successors, (0), 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 85 [2022-02-10 02:21:27,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:21:27,500 INFO L225 Difference]: With dead ends: 773 [2022-02-10 02:21:27,500 INFO L226 Difference]: Without dead ends: 755 [2022-02-10 02:21:27,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2281 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=988, Invalid=7202, Unknown=0, NotChecked=0, Total=8190 [2022-02-10 02:21:27,503 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 242 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:21:27,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 1158 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:21:27,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-02-10 02:21:27,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 429. [2022-02-10 02:21:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.2710280373831775) internal successors, (544), 428 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 544 transitions. [2022-02-10 02:21:27,511 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 544 transitions. Word has length 85 [2022-02-10 02:21:27,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:21:27,512 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 544 transitions. [2022-02-10 02:21:27,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.03030303030303) internal successors, (133), 33 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:27,512 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 544 transitions. [2022-02-10 02:21:27,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 02:21:27,513 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:21:27,513 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:21:27,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 02:21:27,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-02-10 02:21:27,737 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:21:27,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:21:27,737 INFO L85 PathProgramCache]: Analyzing trace with hash 260654966, now seen corresponding path program 9 times [2022-02-10 02:21:27,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:21:27,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77243948] [2022-02-10 02:21:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:21:27,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:21:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:27,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:21:27,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77243948] [2022-02-10 02:21:27,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77243948] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:21:27,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266058039] [2022-02-10 02:21:27,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:21:27,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:27,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:21:27,977 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) [2022-02-10 02:21:27,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 02:21:28,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:21:28,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:21:28,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:21:28,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:21:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:28,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:21:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:28,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266058039] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:21:28,676 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:21:28,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-02-10 02:21:28,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932498973] [2022-02-10 02:21:28,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:21:28,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:21:28,677 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:21:28,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:21:28,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:21:28,678 INFO L87 Difference]: Start difference. First operand 429 states and 544 transitions. Second operand has 32 states, 32 states have (on average 3.9375) internal successors, (126), 32 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) [2022-02-10 02:21:34,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:21:34,239 INFO L93 Difference]: Finished difference Result 1055 states and 1304 transitions. [2022-02-10 02:21:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-10 02:21:34,239 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.9375) internal successors, (126), 32 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 85 [2022-02-10 02:21:34,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:21:34,241 INFO L225 Difference]: With dead ends: 1055 [2022-02-10 02:21:34,241 INFO L226 Difference]: Without dead ends: 1053 [2022-02-10 02:21:34,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3619 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1287, Invalid=9843, Unknown=0, NotChecked=0, Total=11130 [2022-02-10 02:21:34,246 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 368 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:21:34,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 1621 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 02:21:34,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2022-02-10 02:21:34,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 615. [2022-02-10 02:21:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 1.3322475570032573) internal successors, (818), 614 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:34,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 818 transitions. [2022-02-10 02:21:34,259 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 818 transitions. Word has length 85 [2022-02-10 02:21:34,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:21:34,259 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 818 transitions. [2022-02-10 02:21:34,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.9375) internal successors, (126), 32 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) [2022-02-10 02:21:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 818 transitions. [2022-02-10 02:21:34,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 02:21:34,263 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:21:34,263 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:21:34,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 02:21:34,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:34,487 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:21:34,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:21:34,487 INFO L85 PathProgramCache]: Analyzing trace with hash -2096707286, now seen corresponding path program 10 times [2022-02-10 02:21:34,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:21:34,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352332827] [2022-02-10 02:21:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:21:34,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:21:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:34,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:21:34,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352332827] [2022-02-10 02:21:34,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352332827] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:21:34,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593023429] [2022-02-10 02:21:34,765 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:21:34,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:34,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:21:34,767 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) [2022-02-10 02:21:34,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 02:21:34,832 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:21:34,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:21:34,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:21:34,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:21:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:35,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:21:35,584 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:35,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593023429] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:21:35,585 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:21:35,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 33 [2022-02-10 02:21:35,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432201512] [2022-02-10 02:21:35,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:21:35,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 02:21:35,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:21:35,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 02:21:35,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:21:35,586 INFO L87 Difference]: Start difference. First operand 615 states and 818 transitions. Second operand has 33 states, 33 states have (on average 4.03030303030303) internal successors, (133), 33 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:44,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:21:44,471 INFO L93 Difference]: Finished difference Result 1343 states and 1721 transitions. [2022-02-10 02:21:44,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-10 02:21:44,472 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.03030303030303) internal successors, (133), 33 states have internal predecessors, (133), 0 states have call successors, (0), 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 85 [2022-02-10 02:21:44,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:21:44,475 INFO L225 Difference]: With dead ends: 1343 [2022-02-10 02:21:44,475 INFO L226 Difference]: Without dead ends: 1317 [2022-02-10 02:21:44,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5104 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1710, Invalid=13542, Unknown=0, NotChecked=0, Total=15252 [2022-02-10 02:21:44,494 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 360 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:21:44,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 1370 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-10 02:21:44,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2022-02-10 02:21:44,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 878. [2022-02-10 02:21:44,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 1.3694412770809579) internal successors, (1201), 877 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:44,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1201 transitions. [2022-02-10 02:21:44,539 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1201 transitions. Word has length 85 [2022-02-10 02:21:44,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:21:44,540 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1201 transitions. [2022-02-10 02:21:44,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.03030303030303) internal successors, (133), 33 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:44,540 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1201 transitions. [2022-02-10 02:21:44,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 02:21:44,542 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:21:44,543 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:21:44,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 02:21:44,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-02-10 02:21:44,764 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:21:44,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:21:44,764 INFO L85 PathProgramCache]: Analyzing trace with hash 375396672, now seen corresponding path program 11 times [2022-02-10 02:21:44,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:21:44,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122690512] [2022-02-10 02:21:44,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:21:44,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:21:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:45,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:21:45,145 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122690512] [2022-02-10 02:21:45,145 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122690512] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:21:45,145 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931344209] [2022-02-10 02:21:45,145 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:21:45,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:45,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:21:45,159 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) [2022-02-10 02:21:45,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 02:21:45,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:21:45,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:21:45,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:21:45,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:21:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:45,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:21:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:46,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931344209] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:21:46,299 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:21:46,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 27 [2022-02-10 02:21:46,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710129181] [2022-02-10 02:21:46,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:21:46,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:21:46,299 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:21:46,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:21:46,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:21:46,300 INFO L87 Difference]: Start difference. First operand 878 states and 1201 transitions. Second operand has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 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) [2022-02-10 02:21:50,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:21:50,466 INFO L93 Difference]: Finished difference Result 1677 states and 2206 transitions. [2022-02-10 02:21:50,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-10 02:21:50,467 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 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 85 [2022-02-10 02:21:50,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:21:50,469 INFO L225 Difference]: With dead ends: 1677 [2022-02-10 02:21:50,470 INFO L226 Difference]: Without dead ends: 1623 [2022-02-10 02:21:50,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2565 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=975, Invalid=7767, Unknown=0, NotChecked=0, Total=8742 [2022-02-10 02:21:50,474 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 218 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:21:50,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 1352 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 02:21:50,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2022-02-10 02:21:50,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1101. [2022-02-10 02:21:50,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1100 states have (on average 1.3681818181818182) internal successors, (1505), 1100 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:50,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1505 transitions. [2022-02-10 02:21:50,493 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1505 transitions. Word has length 85 [2022-02-10 02:21:50,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:21:50,493 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 1505 transitions. [2022-02-10 02:21:50,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 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) [2022-02-10 02:21:50,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1505 transitions. [2022-02-10 02:21:50,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 02:21:50,496 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:21:50,496 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:21:50,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-10 02:21:50,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-02-10 02:21:50,696 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:21:50,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:21:50,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1125299202, now seen corresponding path program 12 times [2022-02-10 02:21:50,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:21:50,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204188521] [2022-02-10 02:21:50,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:21:50,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:21:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:50,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:21:50,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204188521] [2022-02-10 02:21:50,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204188521] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:21:50,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394140261] [2022-02-10 02:21:50,945 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:21:50,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:50,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:21:50,946 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) [2022-02-10 02:21:50,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 02:21:51,050 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:21:51,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:21:51,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:21:51,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:21:51,315 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:51,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:21:51,676 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:51,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394140261] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:21:51,677 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:21:51,677 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-10 02:21:51,677 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479575178] [2022-02-10 02:21:51,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:21:51,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 02:21:51,679 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:21:51,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 02:21:51,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:21:51,680 INFO L87 Difference]: Start difference. First operand 1101 states and 1505 transitions. Second operand has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:57,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:21:57,104 INFO L93 Difference]: Finished difference Result 1923 states and 2506 transitions. [2022-02-10 02:21:57,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-10 02:21:57,104 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 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 85 [2022-02-10 02:21:57,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:21:57,107 INFO L225 Difference]: With dead ends: 1923 [2022-02-10 02:21:57,107 INFO L226 Difference]: Without dead ends: 1919 [2022-02-10 02:21:57,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2887 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1129, Invalid=8183, Unknown=0, NotChecked=0, Total=9312 [2022-02-10 02:21:57,108 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 317 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:21:57,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 1703 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 02:21:57,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2022-02-10 02:21:57,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1101. [2022-02-10 02:21:57,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1100 states have (on average 1.3663636363636364) internal successors, (1503), 1100 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:57,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1503 transitions. [2022-02-10 02:21:57,127 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1503 transitions. Word has length 85 [2022-02-10 02:21:57,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:21:57,127 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 1503 transitions. [2022-02-10 02:21:57,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:21:57,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1503 transitions. [2022-02-10 02:21:57,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 02:21:57,129 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:21:57,129 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:21:57,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-10 02:21:57,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-10 02:21:57,335 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:21:57,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:21:57,335 INFO L85 PathProgramCache]: Analyzing trace with hash 812305842, now seen corresponding path program 13 times [2022-02-10 02:21:57,335 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:21:57,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646771938] [2022-02-10 02:21:57,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:21:57,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:21:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:57,610 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:21:57,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646771938] [2022-02-10 02:21:57,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646771938] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:21:57,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607217137] [2022-02-10 02:21:57,610 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:21:57,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:21:57,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:21:57,612 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) [2022-02-10 02:21:57,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 02:21:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:21:57,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:21:57,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:21:57,987 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:57,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:21:58,377 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:21:58,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607217137] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:21:58,377 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:21:58,377 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 34 [2022-02-10 02:21:58,377 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58784300] [2022-02-10 02:21:58,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:21:58,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:21:58,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:21:58,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:21:58,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1003, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:21:58,378 INFO L87 Difference]: Start difference. First operand 1101 states and 1503 transitions. Second operand has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 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) [2022-02-10 02:22:04,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:22:04,912 INFO L93 Difference]: Finished difference Result 1683 states and 2224 transitions. [2022-02-10 02:22:04,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-10 02:22:04,912 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 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 85 [2022-02-10 02:22:04,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:22:04,914 INFO L225 Difference]: With dead ends: 1683 [2022-02-10 02:22:04,914 INFO L226 Difference]: Without dead ends: 1665 [2022-02-10 02:22:04,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3810 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1445, Invalid=10545, Unknown=0, NotChecked=0, Total=11990 [2022-02-10 02:22:04,915 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 291 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:22:04,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 1854 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 02:22:04,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2022-02-10 02:22:04,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1119. [2022-02-10 02:22:04,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 1.3631484794275492) internal successors, (1524), 1118 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:04,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1524 transitions. [2022-02-10 02:22:04,933 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1524 transitions. Word has length 85 [2022-02-10 02:22:04,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:22:04,934 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 1524 transitions. [2022-02-10 02:22:04,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 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) [2022-02-10 02:22:04,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1524 transitions. [2022-02-10 02:22:04,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 02:22:04,936 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:22:04,936 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:22:04,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 02:22:05,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-10 02:22:05,144 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:22:05,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:22:05,145 INFO L85 PathProgramCache]: Analyzing trace with hash 436504592, now seen corresponding path program 14 times [2022-02-10 02:22:05,145 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:22:05,145 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264834954] [2022-02-10 02:22:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:22:05,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:22:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:22:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:05,365 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:22:05,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264834954] [2022-02-10 02:22:05,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264834954] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:22:05,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225222351] [2022-02-10 02:22:05,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:22:05,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:22:05,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:22:05,367 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) [2022-02-10 02:22:05,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 02:22:05,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:22:05,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:22:05,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:22:05,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:22:05,705 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:05,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:22:06,029 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:06,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225222351] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:22:06,030 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:22:06,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-10 02:22:06,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132405504] [2022-02-10 02:22:06,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:22:06,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 02:22:06,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:22:06,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 02:22:06,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:22:06,032 INFO L87 Difference]: Start difference. First operand 1119 states and 1524 transitions. Second operand has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:15,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:22:15,218 INFO L93 Difference]: Finished difference Result 1983 states and 2531 transitions. [2022-02-10 02:22:15,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-02-10 02:22:15,227 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 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 85 [2022-02-10 02:22:15,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:22:15,231 INFO L225 Difference]: With dead ends: 1983 [2022-02-10 02:22:15,231 INFO L226 Difference]: Without dead ends: 1980 [2022-02-10 02:22:15,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5885 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1990, Invalid=14780, Unknown=0, NotChecked=0, Total=16770 [2022-02-10 02:22:15,237 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 580 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:22:15,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 1707 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-10 02:22:15,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2022-02-10 02:22:15,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1221. [2022-02-10 02:22:15,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1220 states have (on average 1.3672131147540985) internal successors, (1668), 1220 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:15,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1668 transitions. [2022-02-10 02:22:15,283 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1668 transitions. Word has length 85 [2022-02-10 02:22:15,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:22:15,283 INFO L470 AbstractCegarLoop]: Abstraction has 1221 states and 1668 transitions. [2022-02-10 02:22:15,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:15,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1668 transitions. [2022-02-10 02:22:15,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 02:22:15,286 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:22:15,286 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:22:15,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 02:22:15,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:22:15,520 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:22:15,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:22:15,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1920857660, now seen corresponding path program 15 times [2022-02-10 02:22:15,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:22:15,521 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933918308] [2022-02-10 02:22:15,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:22:15,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:22:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:22:15,781 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:15,782 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:22:15,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933918308] [2022-02-10 02:22:15,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933918308] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:22:15,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157270606] [2022-02-10 02:22:15,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:22:15,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:22:15,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:22:15,783 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) [2022-02-10 02:22:15,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 02:22:15,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:22:15,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:22:15,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:22:15,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:22:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:16,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:22:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:16,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157270606] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:22:16,567 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:22:16,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 34 [2022-02-10 02:22:16,567 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242045923] [2022-02-10 02:22:16,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:22:16,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:22:16,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:22:16,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:22:16,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:22:16,569 INFO L87 Difference]: Start difference. First operand 1221 states and 1668 transitions. Second operand has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 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) [2022-02-10 02:22:21,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 02:22:28,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:22:28,462 INFO L93 Difference]: Finished difference Result 2049 states and 2661 transitions. [2022-02-10 02:22:28,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-02-10 02:22:28,463 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 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 85 [2022-02-10 02:22:28,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:22:28,466 INFO L225 Difference]: With dead ends: 2049 [2022-02-10 02:22:28,466 INFO L226 Difference]: Without dead ends: 2023 [2022-02-10 02:22:28,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7084 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=2264, Invalid=18042, Unknown=0, NotChecked=0, Total=20306 [2022-02-10 02:22:28,471 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 515 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:22:28,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 1560 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-10 02:22:28,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2022-02-10 02:22:28,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 1276. [2022-02-10 02:22:28,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1275 states have (on average 1.3694117647058823) internal successors, (1746), 1275 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1746 transitions. [2022-02-10 02:22:28,535 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1746 transitions. Word has length 85 [2022-02-10 02:22:28,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:22:28,535 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1746 transitions. [2022-02-10 02:22:28,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 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) [2022-02-10 02:22:28,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1746 transitions. [2022-02-10 02:22:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 02:22:28,537 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:22:28,538 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:22:28,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 02:22:28,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-10 02:22:28,773 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:22:28,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:22:28,773 INFO L85 PathProgramCache]: Analyzing trace with hash 551246298, now seen corresponding path program 16 times [2022-02-10 02:22:28,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:22:28,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938898086] [2022-02-10 02:22:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:22:28,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:22:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:22:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:28,970 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:22:28,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938898086] [2022-02-10 02:22:28,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938898086] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:22:28,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479549502] [2022-02-10 02:22:28,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:22:28,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:22:28,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:22:28,972 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) [2022-02-10 02:22:28,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 02:22:29,037 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:22:29,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:22:29,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:22:29,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:22:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:29,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:22:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:29,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479549502] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:22:29,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:22:29,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 27 [2022-02-10 02:22:29,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206761342] [2022-02-10 02:22:29,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:22:29,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:22:29,583 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:22:29,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:22:29,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:22:29,584 INFO L87 Difference]: Start difference. First operand 1276 states and 1746 transitions. Second operand has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 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) [2022-02-10 02:22:34,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:22:34,250 INFO L93 Difference]: Finished difference Result 2154 states and 2819 transitions. [2022-02-10 02:22:34,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-02-10 02:22:34,250 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 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 85 [2022-02-10 02:22:34,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:22:34,254 INFO L225 Difference]: With dead ends: 2154 [2022-02-10 02:22:34,254 INFO L226 Difference]: Without dead ends: 2100 [2022-02-10 02:22:34,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5034 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1652, Invalid=13848, Unknown=0, NotChecked=0, Total=15500 [2022-02-10 02:22:34,256 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 269 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 02:22:34,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 1583 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 02:22:34,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2022-02-10 02:22:34,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1443. [2022-02-10 02:22:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.3703190013869626) internal successors, (1976), 1442 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:34,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1976 transitions. [2022-02-10 02:22:34,278 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1976 transitions. Word has length 85 [2022-02-10 02:22:34,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:22:34,279 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1976 transitions. [2022-02-10 02:22:34,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 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) [2022-02-10 02:22:34,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1976 transitions. [2022-02-10 02:22:34,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 02:22:34,281 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:22:34,281 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:22:34,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 02:22:34,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:22:34,495 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:22:34,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:22:34,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1436018084, now seen corresponding path program 17 times [2022-02-10 02:22:34,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:22:34,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005309122] [2022-02-10 02:22:34,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:22:34,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:22:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:22:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:34,707 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:22:34,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005309122] [2022-02-10 02:22:34,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005309122] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:22:34,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585306318] [2022-02-10 02:22:34,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:22:34,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:22:34,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:22:34,708 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) [2022-02-10 02:22:34,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 02:22:34,781 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:22:34,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:22:34,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:22:34,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:22:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:35,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:22:35,631 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:35,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585306318] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:22:35,632 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:22:35,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 35 [2022-02-10 02:22:35,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871899947] [2022-02-10 02:22:35,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:22:35,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:22:35,632 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:22:35,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:22:35,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:22:35,633 INFO L87 Difference]: Start difference. First operand 1443 states and 1976 transitions. Second operand has 35 states, 35 states have (on average 3.742857142857143) internal successors, (131), 35 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:22:40,701 INFO L93 Difference]: Finished difference Result 2017 states and 2708 transitions. [2022-02-10 02:22:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-10 02:22:40,702 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.742857142857143) internal successors, (131), 35 states have internal predecessors, (131), 0 states have call successors, (0), 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 85 [2022-02-10 02:22:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:22:40,705 INFO L225 Difference]: With dead ends: 2017 [2022-02-10 02:22:40,705 INFO L226 Difference]: Without dead ends: 2016 [2022-02-10 02:22:40,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2805 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1817, Invalid=9739, Unknown=0, NotChecked=0, Total=11556 [2022-02-10 02:22:40,707 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 634 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:22:40,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 2141 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 02:22:40,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2022-02-10 02:22:40,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1471. [2022-02-10 02:22:40,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1470 states have (on average 1.3693877551020408) internal successors, (2013), 1470 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:40,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2013 transitions. [2022-02-10 02:22:40,729 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2013 transitions. Word has length 85 [2022-02-10 02:22:40,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:22:40,730 INFO L470 AbstractCegarLoop]: Abstraction has 1471 states and 2013 transitions. [2022-02-10 02:22:40,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.742857142857143) internal successors, (131), 35 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:40,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2013 transitions. [2022-02-10 02:22:40,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 02:22:40,732 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:22:40,732 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:22:40,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-10 02:22:40,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:22:40,957 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:22:40,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:22:40,957 INFO L85 PathProgramCache]: Analyzing trace with hash 501586960, now seen corresponding path program 18 times [2022-02-10 02:22:40,957 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:22:40,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391952341] [2022-02-10 02:22:40,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:22:40,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:22:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:22:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:41,185 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:22:41,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391952341] [2022-02-10 02:22:41,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391952341] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:22:41,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612444475] [2022-02-10 02:22:41,185 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:22:41,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:22:41,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:22:41,188 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) [2022-02-10 02:22:41,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 02:22:41,322 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:22:41,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:22:41,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:22:41,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:22:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:41,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:22:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:42,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612444475] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:22:42,010 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:22:42,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 34 [2022-02-10 02:22:42,010 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118869631] [2022-02-10 02:22:42,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:22:42,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 02:22:42,011 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:22:42,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 02:22:42,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:22:42,011 INFO L87 Difference]: Start difference. First operand 1471 states and 2013 transitions. Second operand has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 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) [2022-02-10 02:22:48,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:22:48,535 INFO L93 Difference]: Finished difference Result 2215 states and 2922 transitions. [2022-02-10 02:22:48,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-02-10 02:22:48,535 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 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 85 [2022-02-10 02:22:48,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:22:48,539 INFO L225 Difference]: With dead ends: 2215 [2022-02-10 02:22:48,539 INFO L226 Difference]: Without dead ends: 2206 [2022-02-10 02:22:48,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10463 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3309, Invalid=25761, Unknown=0, NotChecked=0, Total=29070 [2022-02-10 02:22:48,542 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 428 mSDsluCounter, 2049 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:22:48,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 1884 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 02:22:48,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2022-02-10 02:22:48,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 1489. [2022-02-10 02:22:48,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1488 states have (on average 1.3736559139784945) internal successors, (2044), 1488 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2044 transitions. [2022-02-10 02:22:48,562 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2044 transitions. Word has length 85 [2022-02-10 02:22:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:22:48,562 INFO L470 AbstractCegarLoop]: Abstraction has 1489 states and 2044 transitions. [2022-02-10 02:22:48,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 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) [2022-02-10 02:22:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2044 transitions. [2022-02-10 02:22:48,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 02:22:48,564 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:22:48,564 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:22:48,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-10 02:22:48,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:22:48,779 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:22:48,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:22:48,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1239765182, now seen corresponding path program 19 times [2022-02-10 02:22:48,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:22:48,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75800247] [2022-02-10 02:22:48,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:22:48,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:22:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:22:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:48,977 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:22:48,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75800247] [2022-02-10 02:22:48,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75800247] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:22:48,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699360744] [2022-02-10 02:22:48,977 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:22:48,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:22:48,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:22:48,979 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) [2022-02-10 02:22:49,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 02:22:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:22:49,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:22:49,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:22:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:49,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:22:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:49,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699360744] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:22:49,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:22:49,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 27 [2022-02-10 02:22:49,584 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285777994] [2022-02-10 02:22:49,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:22:49,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:22:49,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:22:49,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:22:49,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:22:49,585 INFO L87 Difference]: Start difference. First operand 1489 states and 2044 transitions. Second operand has 27 states, 27 states have (on average 4.518518518518518) internal successors, (122), 27 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:53,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:22:53,137 INFO L93 Difference]: Finished difference Result 2224 states and 2969 transitions. [2022-02-10 02:22:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-10 02:22:53,138 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.518518518518518) internal successors, (122), 27 states have internal predecessors, (122), 0 states have call successors, (0), 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 85 [2022-02-10 02:22:53,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:22:53,140 INFO L225 Difference]: With dead ends: 2224 [2022-02-10 02:22:53,140 INFO L226 Difference]: Without dead ends: 2206 [2022-02-10 02:22:53,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4217 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1487, Invalid=11395, Unknown=0, NotChecked=0, Total=12882 [2022-02-10 02:22:53,142 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 283 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:22:53,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 1246 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:22:53,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2022-02-10 02:22:53,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 1508. [2022-02-10 02:22:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1507 states have (on average 1.3722627737226278) internal successors, (2068), 1507 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 2068 transitions. [2022-02-10 02:22:53,157 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 2068 transitions. Word has length 85 [2022-02-10 02:22:53,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:22:53,157 INFO L470 AbstractCegarLoop]: Abstraction has 1508 states and 2068 transitions. [2022-02-10 02:22:53,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.518518518518518) internal successors, (122), 27 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:53,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 2068 transitions. [2022-02-10 02:22:53,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 02:22:53,159 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:22:53,159 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:22:53,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-02-10 02:22:53,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:22:53,360 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:22:53,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:22:53,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1986150040, now seen corresponding path program 20 times [2022-02-10 02:22:53,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:22:53,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071942017] [2022-02-10 02:22:53,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:22:53,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:22:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:22:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:53,556 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:22:53,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071942017] [2022-02-10 02:22:53,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071942017] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:22:53,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478985294] [2022-02-10 02:22:53,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:22:53,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:22:53,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:22:53,558 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) [2022-02-10 02:22:53,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 02:22:53,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:22:53,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:22:53,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:22:53,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:22:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:53,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:22:54,204 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:54,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478985294] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:22:54,204 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:22:54,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 27 [2022-02-10 02:22:54,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572464002] [2022-02-10 02:22:54,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:22:54,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:22:54,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:22:54,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:22:54,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:22:54,206 INFO L87 Difference]: Start difference. First operand 1508 states and 2068 transitions. Second operand has 27 states, 27 states have (on average 4.592592592592593) internal successors, (124), 27 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) [2022-02-10 02:22:56,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:22:56,159 INFO L93 Difference]: Finished difference Result 2058 states and 2764 transitions. [2022-02-10 02:22:56,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-10 02:22:56,160 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.592592592592593) internal successors, (124), 27 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 85 [2022-02-10 02:22:56,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:22:56,163 INFO L225 Difference]: With dead ends: 2058 [2022-02-10 02:22:56,163 INFO L226 Difference]: Without dead ends: 2043 [2022-02-10 02:22:56,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 154 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=843, Invalid=5477, Unknown=0, NotChecked=0, Total=6320 [2022-02-10 02:22:56,165 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 286 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:22:56,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 1460 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:22:56,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2022-02-10 02:22:56,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1488. [2022-02-10 02:22:56,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 1.3691997310020174) internal successors, (2036), 1487 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:56,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2036 transitions. [2022-02-10 02:22:56,186 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2036 transitions. Word has length 85 [2022-02-10 02:22:56,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:22:56,186 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 2036 transitions. [2022-02-10 02:22:56,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.592592592592593) internal successors, (124), 27 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) [2022-02-10 02:22:56,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2036 transitions. [2022-02-10 02:22:56,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-02-10 02:22:56,189 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:22:56,189 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:22:56,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 02:22:56,406 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,SelfDestructingSolverStorable22 [2022-02-10 02:22:56,406 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:22:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:22:56,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1379335776, now seen corresponding path program 21 times [2022-02-10 02:22:56,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:22:56,407 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18417609] [2022-02-10 02:22:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:22:56,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:22:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:22:56,518 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:56,518 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:22:56,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18417609] [2022-02-10 02:22:56,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18417609] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:22:56,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881875687] [2022-02-10 02:22:56,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:22:56,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:22:56,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:22:56,522 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) [2022-02-10 02:22:56,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 02:22:56,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:22:56,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:22:56,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:22:56,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:22:56,801 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:56,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:22:57,013 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:57,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881875687] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:22:57,014 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:22:57,014 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-02-10 02:22:57,014 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595627887] [2022-02-10 02:22:57,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:22:57,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:22:57,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:22:57,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:22:57,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:22:57,015 INFO L87 Difference]: Start difference. First operand 1488 states and 2036 transitions. Second operand has 15 states, 15 states have (on average 12.466666666666667) internal successors, (187), 15 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:57,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:22:57,152 INFO L93 Difference]: Finished difference Result 2423 states and 3328 transitions. [2022-02-10 02:22:57,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:22:57,153 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.466666666666667) internal successors, (187), 15 states have internal predecessors, (187), 0 states have call successors, (0), 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 90 [2022-02-10 02:22:57,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:22:57,157 INFO L225 Difference]: With dead ends: 2423 [2022-02-10 02:22:57,157 INFO L226 Difference]: Without dead ends: 2377 [2022-02-10 02:22:57,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:22:57,158 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 239 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:22:57,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 924 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:22:57,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2022-02-10 02:22:57,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 1975. [2022-02-10 02:22:57,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1974 states have (on average 1.384498480243161) internal successors, (2733), 1974 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:57,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2733 transitions. [2022-02-10 02:22:57,188 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2733 transitions. Word has length 90 [2022-02-10 02:22:57,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:22:57,188 INFO L470 AbstractCegarLoop]: Abstraction has 1975 states and 2733 transitions. [2022-02-10 02:22:57,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.466666666666667) internal successors, (187), 15 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:22:57,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2733 transitions. [2022-02-10 02:22:57,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-10 02:22:57,192 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:22:57,192 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:22:57,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-10 02:22:57,419 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,SelfDestructingSolverStorable23 [2022-02-10 02:22:57,420 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:22:57,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:22:57,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1221742322, now seen corresponding path program 22 times [2022-02-10 02:22:57,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:22:57,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080051384] [2022-02-10 02:22:57,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:22:57,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:22:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:22:57,770 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:57,770 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:22:57,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080051384] [2022-02-10 02:22:57,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080051384] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:22:57,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064850492] [2022-02-10 02:22:57,771 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:22:57,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:22:57,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:22:57,772 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) [2022-02-10 02:22:57,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 02:22:57,914 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:22:57,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:22:57,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-10 02:22:57,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:22:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:58,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:22:58,996 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:22:58,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064850492] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:22:58,996 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:22:58,996 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 41 [2022-02-10 02:22:58,996 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546870406] [2022-02-10 02:22:58,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:22:58,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:22:58,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:22:58,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:22:58,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1485, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:22:58,997 INFO L87 Difference]: Start difference. First operand 1975 states and 2733 transitions. Second operand has 41 states, 41 states have (on average 3.731707317073171) internal successors, (153), 41 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:23:17,824 WARN L228 SmtUtils]: Spent 10.41s on a formula simplification. DAG size of input: 68 DAG size of output: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 02:23:21,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 02:23:26,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 02:23:43,516 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 02:24:26,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:26,210 INFO L93 Difference]: Finished difference Result 3949 states and 5146 transitions. [2022-02-10 02:24:26,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-02-10 02:24:26,211 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.731707317073171) internal successors, (153), 41 states have internal predecessors, (153), 0 states have call successors, (0), 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 95 [2022-02-10 02:24:26,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:26,214 INFO L225 Difference]: With dead ends: 3949 [2022-02-10 02:24:26,214 INFO L226 Difference]: Without dead ends: 3906 [2022-02-10 02:24:26,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 166 SyntacticMatches, 3 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18689 ImplicationChecksByTransitivity, 77.3s TimeCoverageRelationStatistics Valid=5440, Invalid=44511, Unknown=1, NotChecked=0, Total=49952 [2022-02-10 02:24:26,217 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 923 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 162 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:26,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 2278 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1817 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-02-10 02:24:26,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3906 states. [2022-02-10 02:24:26,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3906 to 2492. [2022-02-10 02:24:26,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2491 states have (on average 1.3894018466479325) internal successors, (3461), 2491 states have internal predecessors, (3461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3461 transitions. [2022-02-10 02:24:26,241 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3461 transitions. Word has length 95 [2022-02-10 02:24:26,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:26,241 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 3461 transitions. [2022-02-10 02:24:26,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.731707317073171) internal successors, (153), 41 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:26,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3461 transitions. [2022-02-10 02:24:26,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-10 02:24:26,244 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:26,244 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:26,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-02-10 02:24:26,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:26,445 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:26,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:26,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1250361636, now seen corresponding path program 23 times [2022-02-10 02:24:26,445 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:26,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725019209] [2022-02-10 02:24:26,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:26,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:27,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:27,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725019209] [2022-02-10 02:24:27,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725019209] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:27,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898786251] [2022-02-10 02:24:27,058 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:24:27,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:27,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:27,059 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) [2022-02-10 02:24:27,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 02:24:27,178 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:24:27,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:27,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-10 02:24:27,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:27,898 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:27,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:28,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898786251] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:28,709 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:28,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 17] total 45 [2022-02-10 02:24:28,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302726717] [2022-02-10 02:24:28,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:28,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-10 02:24:28,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:28,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-10 02:24:28,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1809, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:24:28,710 INFO L87 Difference]: Start difference. First operand 2492 states and 3461 transitions. Second operand has 45 states, 45 states have (on average 3.533333333333333) internal successors, (159), 45 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:23,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:23,817 INFO L93 Difference]: Finished difference Result 4647 states and 6168 transitions. [2022-02-10 02:25:23,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2022-02-10 02:25:23,818 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.533333333333333) internal successors, (159), 45 states have internal predecessors, (159), 0 states have call successors, (0), 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 95 [2022-02-10 02:25:23,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:23,822 INFO L225 Difference]: With dead ends: 4647 [2022-02-10 02:25:23,822 INFO L226 Difference]: Without dead ends: 4564 [2022-02-10 02:25:23,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 165 SyntacticMatches, 3 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19831 ImplicationChecksByTransitivity, 51.1s TimeCoverageRelationStatistics Valid=4732, Invalid=52150, Unknown=0, NotChecked=0, Total=56882 [2022-02-10 02:25:23,825 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 603 mSDsluCounter, 3828 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 3402 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:23,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 3402 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-02-10 02:25:23,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2022-02-10 02:25:23,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 2915. [2022-02-10 02:25:23,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2915 states, 2914 states have (on average 1.3925875085792725) internal successors, (4058), 2914 states have internal predecessors, (4058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 4058 transitions. [2022-02-10 02:25:23,863 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 4058 transitions. Word has length 95 [2022-02-10 02:25:23,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:23,863 INFO L470 AbstractCegarLoop]: Abstraction has 2915 states and 4058 transitions. [2022-02-10 02:25:23,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.533333333333333) internal successors, (159), 45 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 4058 transitions. [2022-02-10 02:25:23,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-10 02:25:23,867 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:23,867 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:25:23,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-10 02:25:24,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:24,089 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:24,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:24,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1738063218, now seen corresponding path program 24 times [2022-02-10 02:25:24,090 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:24,090 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155426924] [2022-02-10 02:25:24,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:24,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:24,469 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:24,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:24,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155426924] [2022-02-10 02:25:24,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155426924] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:24,470 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754291726] [2022-02-10 02:25:24,470 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:25:24,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:24,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:24,471 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) [2022-02-10 02:25:24,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 02:25:24,598 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:25:24,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:24,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-10 02:25:24,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:25,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:25,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754291726] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:25,658 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:25,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 45 [2022-02-10 02:25:25,659 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059311379] [2022-02-10 02:25:25,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:25,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-10 02:25:25,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:25,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-10 02:25:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1822, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:25:25,660 INFO L87 Difference]: Start difference. First operand 2915 states and 4058 transitions. Second operand has 45 states, 45 states have (on average 3.6222222222222222) internal successors, (163), 45 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:14,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:26:14,182 INFO L93 Difference]: Finished difference Result 4468 states and 5994 transitions. [2022-02-10 02:26:14,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-02-10 02:26:14,183 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.6222222222222222) internal successors, (163), 45 states have internal predecessors, (163), 0 states have call successors, (0), 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 95 [2022-02-10 02:26:14,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:26:14,187 INFO L225 Difference]: With dead ends: 4468 [2022-02-10 02:26:14,187 INFO L226 Difference]: Without dead ends: 4441 [2022-02-10 02:26:14,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9951 ImplicationChecksByTransitivity, 46.4s TimeCoverageRelationStatistics Valid=3243, Invalid=26169, Unknown=0, NotChecked=0, Total=29412 [2022-02-10 02:26:14,190 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 523 mSDsluCounter, 3747 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 3378 SdHoareTripleChecker+Invalid, 2256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-02-10 02:26:14,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 3378 Invalid, 2256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-10 02:26:14,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4441 states. [2022-02-10 02:26:14,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4441 to 3185. [2022-02-10 02:26:14,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3185 states, 3184 states have (on average 1.3925879396984924) internal successors, (4434), 3184 states have internal predecessors, (4434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:14,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 4434 transitions. [2022-02-10 02:26:14,233 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 4434 transitions. Word has length 95 [2022-02-10 02:26:14,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:26:14,233 INFO L470 AbstractCegarLoop]: Abstraction has 3185 states and 4434 transitions. [2022-02-10 02:26:14,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.6222222222222222) internal successors, (163), 45 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:14,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 4434 transitions. [2022-02-10 02:26:14,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-10 02:26:14,238 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:26:14,238 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:26:14,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-10 02:26:14,451 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,SelfDestructingSolverStorable26 [2022-02-10 02:26:14,451 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:26:14,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:26:14,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1999122762, now seen corresponding path program 25 times [2022-02-10 02:26:14,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:26:14,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38778791] [2022-02-10 02:26:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:26:14,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:26:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:26:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:15,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:26:15,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38778791] [2022-02-10 02:26:15,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38778791] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:26:15,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963521853] [2022-02-10 02:26:15,020 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:26:15,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:26:15,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:26:15,021 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) [2022-02-10 02:26:15,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 02:26:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:26:15,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-10 02:26:15,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:26:26,852 WARN L228 SmtUtils]: Spent 8.76s on a formula simplification. DAG size of input: 4198 DAG size of output: 2756 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-02-10 02:26:41,765 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:41,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:26:44,159 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:44,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963521853] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:26:44,160 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:26:44,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 18] total 47 [2022-02-10 02:26:44,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16299527] [2022-02-10 02:26:44,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:26:44,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-10 02:26:44,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:26:44,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-10 02:26:44,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 02:26:44,161 INFO L87 Difference]: Start difference. First operand 3185 states and 4434 transitions. Second operand has 47 states, 47 states have (on average 3.382978723404255) internal successors, (159), 47 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:05,518 WARN L228 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 88 DAG size of output: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 02:29:16,513 WARN L228 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 127 DAG size of output: 86 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 02:29:40,857 WARN L228 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 94 DAG size of output: 85 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 02:30:07,221 WARN L228 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 136 DAG size of output: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 02:33:51,292 WARN L228 SmtUtils]: Spent 8.91s on a formula simplification. DAG size of input: 131 DAG size of output: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-02-10 02:34:01,197 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 02:34:01,200 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 [2022-02-10 02:34:01,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-02-10 02:34:01,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 164 SyntacticMatches, 2 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9126 ImplicationChecksByTransitivity, 418.2s TimeCoverageRelationStatistics Valid=3365, Invalid=26389, Unknown=2, NotChecked=0, Total=29756 [2022-02-10 02:34:01,241 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 479 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 2149 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 2288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:34:01,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 1819 Invalid, 2288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2149 Invalid, 0 Unknown, 0 Unchecked, 21.6s Time] [2022-02-10 02:34:01,243 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-10 02:34:01,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-10 02:34:01,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-10 02:34:01,444 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (3185states) and FLOYD_HOARE automaton (currently 138 states, 47 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 173 known predicates. [2022-02-10 02:34:01,445 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 02:34:01,445 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 02:34:01,447 INFO L732 BasicCegarLoop]: Path program histogram: [25, 2, 1] [2022-02-10 02:34:01,448 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 02:34:01,448 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 02:34:01,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 02:34:01 BasicIcfg [2022-02-10 02:34:01,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 02:34:01,450 INFO L158 Benchmark]: Toolchain (without parser) took 828883.74ms. Allocated memory was 172.0MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 121.2MB in the beginning and 3.4GB in the end (delta: -3.3GB). Peak memory consumption was 4.3GB. Max. memory is 8.0GB. [2022-02-10 02:34:01,450 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 172.0MB. Free memory is still 137.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 02:34:01,450 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.49ms. Allocated memory is still 172.0MB. Free memory was 121.1MB in the beginning and 147.0MB in the end (delta: -25.9MB). Peak memory consumption was 11.1MB. Max. memory is 8.0GB. [2022-02-10 02:34:01,451 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.89ms. Allocated memory is still 172.0MB. Free memory was 147.0MB in the beginning and 145.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 02:34:01,451 INFO L158 Benchmark]: Boogie Preprocessor took 32.08ms. Allocated memory is still 172.0MB. Free memory was 145.4MB in the beginning and 144.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 02:34:01,451 INFO L158 Benchmark]: RCFGBuilder took 331.48ms. Allocated memory is still 172.0MB. Free memory was 144.3MB in the beginning and 131.2MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-02-10 02:34:01,451 INFO L158 Benchmark]: TraceAbstraction took 828177.02ms. Allocated memory was 172.0MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 131.2MB in the beginning and 3.4GB in the end (delta: -3.3GB). Peak memory consumption was 4.3GB. Max. memory is 8.0GB. [2022-02-10 02:34:01,452 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 172.0MB. Free memory is still 137.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 301.49ms. Allocated memory is still 172.0MB. Free memory was 121.1MB in the beginning and 147.0MB in the end (delta: -25.9MB). Peak memory consumption was 11.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.89ms. Allocated memory is still 172.0MB. Free memory was 147.0MB in the beginning and 145.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.08ms. Allocated memory is still 172.0MB. Free memory was 145.4MB in the beginning and 144.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 331.48ms. Allocated memory is still 172.0MB. Free memory was 144.3MB in the beginning and 131.2MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 828177.02ms. Allocated memory was 172.0MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 131.2MB in the beginning and 3.4GB in the end (delta: -3.3GB). Peak memory consumption was 4.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (3185states) and FLOYD_HOARE automaton (currently 138 states, 47 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 173 known predicates. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (3185states) and FLOYD_HOARE automaton (currently 138 states, 47 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 173 known predicates. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (3185states) and FLOYD_HOARE automaton (currently 138 states, 47 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 173 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 102 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 828.1s, OverallIterations: 28, TraceHistogramMax: 4, PathProgramHistogramMax: 25, EmptinessCheckTime: 8.6s, AutomataDifference: 726.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 31.7s, PartialOrderReductionTime: 31.6s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 8871 SdHoareTripleChecker+Valid, 56.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8871 mSDsluCounter, 37966 SdHoareTripleChecker+Invalid, 53.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40433 mSDsCounter, 1627 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28623 IncrementalHoareTripleChecker+Invalid, 30251 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1627 mSolverCounterUnsat, 2615 mSDtfsCounter, 28623 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6358 GetRequests, 3742 SyntacticMatches, 42 SemanticMatches, 2573 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118708 ImplicationChecksByTransitivity, 667.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=657295occurred in iteration=0, InterpolantAutomatonStates: 1990, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 27 MinimizatonAttempts, 38709 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 51.3s InterpolantComputationTime, 4390 NumberOfCodeBlocks, 4274 NumberOfCodeBlocksAsserted, 95 NumberOfCheckSat, 6343 ConstructedInterpolants, 0 QuantifiedInterpolants, 32029 SizeOfPredicates, 273 NumberOfNonLiveVariables, 4458 ConjunctsInSsa, 527 ConjunctsInUnsatCore, 77 InterpolantComputations, 4 PerfectInterpolantSequences, 329/1875 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown