/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 13:35:12,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 13:35:12,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 13:35:12,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 13:35:12,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 13:35:12,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 13:35:12,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 13:35:12,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 13:35:12,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 13:35:12,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 13:35:12,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 13:35:12,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 13:35:12,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 13:35:12,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 13:35:12,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 13:35:12,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 13:35:12,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 13:35:12,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 13:35:12,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 13:35:12,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 13:35:12,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 13:35:12,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 13:35:12,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 13:35:12,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 13:35:12,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 13:35:12,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 13:35:12,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 13:35:12,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 13:35:12,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 13:35:12,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-15 13:35:12,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-15 13:35:12,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-15 13:35:12,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-15 13:35:12,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-15 13:35:12,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-15 13:35:12,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-15 13:35:12,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-15 13:35:12,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-15 13:35:12,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 13:35:12,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 13:35:12,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 13:35:12,696 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-15 13:35:12,732 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 13:35:12,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 13:35:12,732 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 13:35:12,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 13:35:12,733 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 13:35:12,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 13:35:12,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 13:35:12,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 13:35:12,734 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 13:35:12,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 13:35:12,735 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 13:35:12,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 13:35:12,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 13:35:12,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 13:35:12,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 13:35:12,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 13:35:12,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 13:35:12,736 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 13:35:12,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 13:35:12,737 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 13:35:12,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 13:35:12,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 13:35:12,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 13:35:12,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 13:35:12,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 13:35:12,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 13:35:12,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 13:35:12,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 13:35:12,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 13:35:12,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 13:35:12,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 13:35:12,738 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 13:35:12,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 13:35:12,739 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 13:35:12,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 13:35:13,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 13:35:13,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 13:35:13,013 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 13:35:13,014 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 13:35:13,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c [2022-03-15 13:35:13,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a38d04534/d3a26b4a2562491db5cc368111935d48/FLAG62b258133 [2022-03-15 13:35:13,482 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 13:35:13,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c [2022-03-15 13:35:13,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a38d04534/d3a26b4a2562491db5cc368111935d48/FLAG62b258133 [2022-03-15 13:35:13,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a38d04534/d3a26b4a2562491db5cc368111935d48 [2022-03-15 13:35:13,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 13:35:13,903 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 13:35:13,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 13:35:13,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 13:35:13,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 13:35:13,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 01:35:13" (1/1) ... [2022-03-15 13:35:13,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@debbbbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:35:13, skipping insertion in model container [2022-03-15 13:35:13,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 01:35:13" (1/1) ... [2022-03-15 13:35:13,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 13:35:13,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 13:35:14,145 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/bench-exp2x6.wvr.c[2453,2466] [2022-03-15 13:35:14,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 13:35:14,164 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 13:35:14,183 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/bench-exp2x6.wvr.c[2453,2466] [2022-03-15 13:35:14,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 13:35:14,196 INFO L208 MainTranslator]: Completed translation [2022-03-15 13:35:14,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:35:14 WrapperNode [2022-03-15 13:35:14,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 13:35:14,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 13:35:14,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 13:35:14,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 13:35:14,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:35:14" (1/1) ... [2022-03-15 13:35:14,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:35:14" (1/1) ... [2022-03-15 13:35:14,241 INFO L137 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-03-15 13:35:14,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 13:35:14,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 13:35:14,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 13:35:14,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 13:35:14,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:35:14" (1/1) ... [2022-03-15 13:35:14,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:35:14" (1/1) ... [2022-03-15 13:35:14,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:35:14" (1/1) ... [2022-03-15 13:35:14,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:35:14" (1/1) ... [2022-03-15 13:35:14,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:35:14" (1/1) ... [2022-03-15 13:35:14,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:35:14" (1/1) ... [2022-03-15 13:35:14,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:35:14" (1/1) ... [2022-03-15 13:35:14,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 13:35:14,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 13:35:14,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 13:35:14,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 13:35:14,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:35:14" (1/1) ... [2022-03-15 13:35:14,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 13:35:14,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:35:14,317 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) [2022-03-15 13:35:14,341 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 [2022-03-15 13:35:14,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 13:35:14,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 13:35:14,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 13:35:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 13:35:14,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 13:35:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 13:35:14,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 13:35:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-15 13:35:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-15 13:35:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 13:35:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 13:35:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 13:35:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 13:35:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 13:35:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 13:35:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 13:35:14,362 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 13:35:14,443 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 13:35:14,445 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 13:35:14,692 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 13:35:14,705 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 13:35:14,705 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-15 13:35:14,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 01:35:14 BoogieIcfgContainer [2022-03-15 13:35:14,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 13:35:14,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 13:35:14,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 13:35:14,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 13:35:14,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 01:35:13" (1/3) ... [2022-03-15 13:35:14,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54eecec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 01:35:14, skipping insertion in model container [2022-03-15 13:35:14,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:35:14" (2/3) ... [2022-03-15 13:35:14,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54eecec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 01:35:14, skipping insertion in model container [2022-03-15 13:35:14,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 01:35:14" (3/3) ... [2022-03-15 13:35:14,718 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x6.wvr.c [2022-03-15 13:35:14,723 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 13:35:14,723 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 13:35:14,724 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 13:35:14,724 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 13:35:14,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,765 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,766 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,766 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,767 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,767 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,768 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,769 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,769 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,769 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,771 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,771 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,771 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,771 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,777 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,778 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,778 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,779 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,779 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,779 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:35:14,785 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-03-15 13:35:14,824 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 13:35:14,829 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 13:35:14,830 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-03-15 13:35:14,842 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 140 places, 137 transitions, 306 flow [2022-03-15 13:35:15,951 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 21692 states, 21691 states have (on average 4.990779586003412) internal successors, (108255), 21691 states have internal predecessors, (108255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:16,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 21692 states, 21691 states have (on average 4.990779586003412) internal successors, (108255), 21691 states have internal predecessors, (108255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:16,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-15 13:35:16,323 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:35:16,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:35:16,324 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 13:35:16,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:35:16,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1092536451, now seen corresponding path program 1 times [2022-03-15 13:35:16,346 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:35:16,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715924375] [2022-03-15 13:35:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:35:16,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:35:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:35:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:35:16,632 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:35:16,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715924375] [2022-03-15 13:35:16,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715924375] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:35:16,633 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:35:16,633 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 13:35:16,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67936585] [2022-03-15 13:35:16,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:35:16,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-15 13:35:16,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:35:16,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-15 13:35:16,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 13:35:16,738 INFO L87 Difference]: Start difference. First operand has 21692 states, 21691 states have (on average 4.990779586003412) internal successors, (108255), 21691 states have internal predecessors, (108255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:17,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:35:17,418 INFO L93 Difference]: Finished difference Result 21692 states and 98180 transitions. [2022-03-15 13:35:17,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-15 13:35:17,420 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-03-15 13:35:17,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:35:17,777 INFO L225 Difference]: With dead ends: 21692 [2022-03-15 13:35:17,777 INFO L226 Difference]: Without dead ends: 21690 [2022-03-15 13:35:17,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 13:35:17,782 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:35:17,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:35:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21690 states. [2022-03-15 13:35:18,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21690 to 21690. [2022-03-15 13:35:19,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21690 states, 21689 states have (on average 4.526626400479506) internal successors, (98178), 21689 states have internal predecessors, (98178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21690 states to 21690 states and 98178 transitions. [2022-03-15 13:35:19,465 INFO L78 Accepts]: Start accepts. Automaton has 21690 states and 98178 transitions. Word has length 92 [2022-03-15 13:35:19,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:35:19,466 INFO L470 AbstractCegarLoop]: Abstraction has 21690 states and 98178 transitions. [2022-03-15 13:35:19,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:19,466 INFO L276 IsEmpty]: Start isEmpty. Operand 21690 states and 98178 transitions. [2022-03-15 13:35:19,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-15 13:35:19,586 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:35:19,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:35:19,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 13:35:19,587 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 13:35:19,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:35:19,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1883690018, now seen corresponding path program 1 times [2022-03-15 13:35:19,591 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:35:19,591 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040392174] [2022-03-15 13:35:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:35:19,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:35:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:35:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:35:20,098 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:35:20,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040392174] [2022-03-15 13:35:20,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040392174] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:35:20,099 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:35:20,099 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-15 13:35:20,099 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328742410] [2022-03-15 13:35:20,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:35:20,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 13:35:20,101 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:35:20,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 13:35:20,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-15 13:35:20,102 INFO L87 Difference]: Start difference. First operand 21690 states and 98178 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:20,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:35:20,820 INFO L93 Difference]: Finished difference Result 25591 states and 115324 transitions. [2022-03-15 13:35:20,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 13:35:20,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-03-15 13:35:20,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:35:21,102 INFO L225 Difference]: With dead ends: 25591 [2022-03-15 13:35:21,102 INFO L226 Difference]: Without dead ends: 25144 [2022-03-15 13:35:21,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-15 13:35:21,105 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 125 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:35:21,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 287 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:35:21,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25144 states. [2022-03-15 13:35:22,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25144 to 23029. [2022-03-15 13:35:22,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23029 states, 23028 states have (on average 4.511377453534827) internal successors, (103888), 23028 states have internal predecessors, (103888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:22,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23029 states to 23029 states and 103888 transitions. [2022-03-15 13:35:22,524 INFO L78 Accepts]: Start accepts. Automaton has 23029 states and 103888 transitions. Word has length 92 [2022-03-15 13:35:22,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:35:22,527 INFO L470 AbstractCegarLoop]: Abstraction has 23029 states and 103888 transitions. [2022-03-15 13:35:22,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand 23029 states and 103888 transitions. [2022-03-15 13:35:22,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-15 13:35:22,658 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:35:22,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:35:22,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 13:35:22,659 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 13:35:22,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:35:22,660 INFO L85 PathProgramCache]: Analyzing trace with hash -660876130, now seen corresponding path program 1 times [2022-03-15 13:35:22,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:35:22,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916353020] [2022-03-15 13:35:22,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:35:22,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:35:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:35:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:35:23,003 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:35:23,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916353020] [2022-03-15 13:35:23,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916353020] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:35:23,004 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:35:23,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 13:35:23,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026934870] [2022-03-15 13:35:23,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:35:23,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 13:35:23,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:35:23,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 13:35:23,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-15 13:35:23,006 INFO L87 Difference]: Start difference. First operand 23029 states and 103888 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 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) [2022-03-15 13:35:23,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:35:23,710 INFO L93 Difference]: Finished difference Result 25144 states and 112645 transitions. [2022-03-15 13:35:23,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 13:35:23,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-03-15 13:35:23,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:35:23,917 INFO L225 Difference]: With dead ends: 25144 [2022-03-15 13:35:23,917 INFO L226 Difference]: Without dead ends: 24691 [2022-03-15 13:35:23,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-03-15 13:35:23,925 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 106 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:35:23,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 322 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:35:23,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24691 states. [2022-03-15 13:35:24,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24691 to 23125. [2022-03-15 13:35:24,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23125 states, 23124 states have (on average 4.500562186472928) internal successors, (104071), 23124 states have internal predecessors, (104071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23125 states to 23125 states and 104071 transitions. [2022-03-15 13:35:25,018 INFO L78 Accepts]: Start accepts. Automaton has 23125 states and 104071 transitions. Word has length 97 [2022-03-15 13:35:25,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:35:25,019 INFO L470 AbstractCegarLoop]: Abstraction has 23125 states and 104071 transitions. [2022-03-15 13:35:25,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 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) [2022-03-15 13:35:25,019 INFO L276 IsEmpty]: Start isEmpty. Operand 23125 states and 104071 transitions. [2022-03-15 13:35:25,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-15 13:35:25,103 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:35:25,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:35:25,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 13:35:25,103 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 13:35:25,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:35:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash -920447929, now seen corresponding path program 1 times [2022-03-15 13:35:25,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:35:25,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127430601] [2022-03-15 13:35:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:35:25,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:35:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:35:25,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:35:25,377 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:35:25,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127430601] [2022-03-15 13:35:25,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127430601] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:35:25,378 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:35:25,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-15 13:35:25,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810099836] [2022-03-15 13:35:25,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:35:25,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 13:35:25,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:35:25,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 13:35:25,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-15 13:35:25,379 INFO L87 Difference]: Start difference. First operand 23125 states and 104071 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 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) [2022-03-15 13:35:26,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:35:26,087 INFO L93 Difference]: Finished difference Result 29319 states and 130578 transitions. [2022-03-15 13:35:26,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 13:35:26,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-03-15 13:35:26,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:35:26,263 INFO L225 Difference]: With dead ends: 29319 [2022-03-15 13:35:26,263 INFO L226 Difference]: Without dead ends: 29319 [2022-03-15 13:35:26,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-15 13:35:26,273 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 181 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:35:26,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 357 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:35:26,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29319 states. [2022-03-15 13:35:27,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29319 to 28582. [2022-03-15 13:35:27,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28582 states, 28581 states have (on average 4.460200832721038) internal successors, (127477), 28581 states have internal predecessors, (127477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:27,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28582 states to 28582 states and 127477 transitions. [2022-03-15 13:35:27,396 INFO L78 Accepts]: Start accepts. Automaton has 28582 states and 127477 transitions. Word has length 97 [2022-03-15 13:35:27,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:35:27,396 INFO L470 AbstractCegarLoop]: Abstraction has 28582 states and 127477 transitions. [2022-03-15 13:35:27,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 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) [2022-03-15 13:35:27,396 INFO L276 IsEmpty]: Start isEmpty. Operand 28582 states and 127477 transitions. [2022-03-15 13:35:27,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-15 13:35:27,766 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:35:27,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:35:27,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 13:35:27,767 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 13:35:27,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:35:27,768 INFO L85 PathProgramCache]: Analyzing trace with hash -734856798, now seen corresponding path program 2 times [2022-03-15 13:35:27,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:35:27,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256698912] [2022-03-15 13:35:27,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:35:27,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:35:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:35:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:35:28,027 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:35:28,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256698912] [2022-03-15 13:35:28,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256698912] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:35:28,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139622006] [2022-03-15 13:35:28,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 13:35:28,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:35:28,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:35:28,029 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) [2022-03-15 13:35:28,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 13:35:28,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 13:35:28,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:35:28,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 13:35:28,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:35:28,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:35:28,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:35:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:35:29,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139622006] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:35:29,105 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:35:29,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-03-15 13:35:29,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305608229] [2022-03-15 13:35:29,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:35:29,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 13:35:29,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:35:29,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 13:35:29,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-03-15 13:35:29,107 INFO L87 Difference]: Start difference. First operand 28582 states and 127477 transitions. Second operand has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 14 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:30,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:35:30,447 INFO L93 Difference]: Finished difference Result 51207 states and 227926 transitions. [2022-03-15 13:35:30,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 13:35:30,448 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 14 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-03-15 13:35:30,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:35:30,898 INFO L225 Difference]: With dead ends: 51207 [2022-03-15 13:35:30,898 INFO L226 Difference]: Without dead ends: 51207 [2022-03-15 13:35:30,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2022-03-15 13:35:30,899 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 749 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:35:30,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 1065 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:35:30,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51207 states. [2022-03-15 13:35:31,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51207 to 32062. [2022-03-15 13:35:32,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32062 states, 32061 states have (on average 4.496584635538505) internal successors, (144165), 32061 states have internal predecessors, (144165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:32,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32062 states to 32062 states and 144165 transitions. [2022-03-15 13:35:32,407 INFO L78 Accepts]: Start accepts. Automaton has 32062 states and 144165 transitions. Word has length 97 [2022-03-15 13:35:32,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:35:32,408 INFO L470 AbstractCegarLoop]: Abstraction has 32062 states and 144165 transitions. [2022-03-15 13:35:32,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 14 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:32,409 INFO L276 IsEmpty]: Start isEmpty. Operand 32062 states and 144165 transitions. [2022-03-15 13:35:32,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-15 13:35:32,493 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:35:32,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:35:32,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 13:35:32,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:35:32,695 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 13:35:32,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:35:32,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1260665222, now seen corresponding path program 1 times [2022-03-15 13:35:32,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:35:32,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134990056] [2022-03-15 13:35:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:35:32,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:35:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:35:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:35:32,912 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:35:32,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134990056] [2022-03-15 13:35:32,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134990056] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:35:32,912 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:35:32,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 13:35:32,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559054888] [2022-03-15 13:35:32,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:35:32,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 13:35:32,913 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:35:32,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 13:35:32,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-15 13:35:32,914 INFO L87 Difference]: Start difference. First operand 32062 states and 144165 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 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) [2022-03-15 13:35:33,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:35:33,595 INFO L93 Difference]: Finished difference Result 32917 states and 147081 transitions. [2022-03-15 13:35:33,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 13:35:33,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-03-15 13:35:33,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:35:33,753 INFO L225 Difference]: With dead ends: 32917 [2022-03-15 13:35:33,753 INFO L226 Difference]: Without dead ends: 32404 [2022-03-15 13:35:33,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-03-15 13:35:33,754 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 129 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:35:33,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 261 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:35:33,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32404 states. [2022-03-15 13:35:34,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32404 to 31684. [2022-03-15 13:35:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31684 states, 31683 states have (on average 4.497964207934855) internal successors, (142509), 31683 states have internal predecessors, (142509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31684 states to 31684 states and 142509 transitions. [2022-03-15 13:35:34,988 INFO L78 Accepts]: Start accepts. Automaton has 31684 states and 142509 transitions. Word has length 97 [2022-03-15 13:35:34,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:35:34,989 INFO L470 AbstractCegarLoop]: Abstraction has 31684 states and 142509 transitions. [2022-03-15 13:35:34,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 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) [2022-03-15 13:35:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 31684 states and 142509 transitions. [2022-03-15 13:35:35,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-15 13:35:35,073 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:35:35,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:35:35,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 13:35:35,074 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 13:35:35,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:35:35,074 INFO L85 PathProgramCache]: Analyzing trace with hash -334142793, now seen corresponding path program 1 times [2022-03-15 13:35:35,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:35:35,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428485112] [2022-03-15 13:35:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:35:35,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:35:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:35:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:35:35,243 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:35:35,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428485112] [2022-03-15 13:35:35,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428485112] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:35:35,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737537005] [2022-03-15 13:35:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:35:35,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:35:35,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:35:35,245 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) [2022-03-15 13:35:35,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 13:35:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:35:35,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 13:35:35,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:35:35,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:35:35,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:35:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:35:35,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737537005] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:35:35,917 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:35:35,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-03-15 13:35:35,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616548942] [2022-03-15 13:35:35,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:35:35,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 13:35:35,918 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:35:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 13:35:35,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-03-15 13:35:35,927 INFO L87 Difference]: Start difference. First operand 31684 states and 142509 transitions. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:37,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:35:37,495 INFO L93 Difference]: Finished difference Result 61315 states and 272534 transitions. [2022-03-15 13:35:37,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 13:35:37,495 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-03-15 13:35:37,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:35:37,849 INFO L225 Difference]: With dead ends: 61315 [2022-03-15 13:35:37,849 INFO L226 Difference]: Without dead ends: 61315 [2022-03-15 13:35:37,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2022-03-15 13:35:37,850 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 861 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:35:37,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 951 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:35:37,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61315 states. [2022-03-15 13:35:39,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61315 to 35833. [2022-03-15 13:35:39,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35833 states, 35832 states have (on average 4.528605715561509) internal successors, (162269), 35832 states have internal predecessors, (162269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:39,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35833 states to 35833 states and 162269 transitions. [2022-03-15 13:35:39,488 INFO L78 Accepts]: Start accepts. Automaton has 35833 states and 162269 transitions. Word has length 97 [2022-03-15 13:35:39,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:35:39,488 INFO L470 AbstractCegarLoop]: Abstraction has 35833 states and 162269 transitions. [2022-03-15 13:35:39,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:39,489 INFO L276 IsEmpty]: Start isEmpty. Operand 35833 states and 162269 transitions. [2022-03-15 13:35:39,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-15 13:35:39,868 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:35:39,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:35:39,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 13:35:40,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-03-15 13:35:40,077 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 13:35:40,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:35:40,077 INFO L85 PathProgramCache]: Analyzing trace with hash 388933738, now seen corresponding path program 2 times [2022-03-15 13:35:40,077 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:35:40,077 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621646309] [2022-03-15 13:35:40,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:35:40,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:35:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:35:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:35:40,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:35:40,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621646309] [2022-03-15 13:35:40,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621646309] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:35:40,274 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:35:40,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-15 13:35:40,275 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848851557] [2022-03-15 13:35:40,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:35:40,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 13:35:40,275 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:35:40,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 13:35:40,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-15 13:35:40,276 INFO L87 Difference]: Start difference. First operand 35833 states and 162269 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 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) [2022-03-15 13:35:40,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:35:40,813 INFO L93 Difference]: Finished difference Result 40097 states and 181588 transitions. [2022-03-15 13:35:40,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 13:35:40,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-03-15 13:35:40,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:35:41,237 INFO L225 Difference]: With dead ends: 40097 [2022-03-15 13:35:41,237 INFO L226 Difference]: Without dead ends: 40097 [2022-03-15 13:35:41,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-15 13:35:41,238 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 205 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:35:41,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 402 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:35:41,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40097 states. [2022-03-15 13:35:42,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40097 to 39369. [2022-03-15 13:35:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39369 states, 39368 states have (on average 4.53274232879496) internal successors, (178445), 39368 states have internal predecessors, (178445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:35:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39369 states to 39369 states and 178445 transitions. [2022-03-15 13:35:42,735 INFO L78 Accepts]: Start accepts. Automaton has 39369 states and 178445 transitions. Word has length 97 [2022-03-15 13:35:42,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:35:42,735 INFO L470 AbstractCegarLoop]: Abstraction has 39369 states and 178445 transitions. [2022-03-15 13:35:42,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 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) [2022-03-15 13:35:42,737 INFO L276 IsEmpty]: Start isEmpty. Operand 39369 states and 178445 transitions. [2022-03-15 13:35:42,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-15 13:35:42,918 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:35:42,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:35:42,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-15 13:35:42,923 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 13:35:42,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:35:42,924 INFO L85 PathProgramCache]: Analyzing trace with hash 796018631, now seen corresponding path program 1 times [2022-03-15 13:35:42,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:35:42,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453347119] [2022-03-15 13:35:42,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:35:42,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:35:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2022-03-15 13:49:27,590 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 [2022-03-15 13:49:28,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown